JP2016053743A - Adapter, camera system and adapter control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adapter that allows various kinds of optical systems to appropriately function in a lens interchangeable type camera system.SOLUTION: An adapter has: a first mount unit that is capable of mounting/demounting a camera body; a second mount unit that is provided separately from the first mount unit, and is capable of mounting/demounting an interchangeable lens including a focus lens making a focus adjustment; and an adapter control unit that generates position information on the focus lens by a pulse signal to be output from the interchangeable lens due to a movement of the focus lens, and transmits the position information to the camera body. The adapter control unit is configured to generate and transmit the position information after starting a power supply to the interchangeable lens.SELECTED DRAWING: Figure 21

Description

  The present invention relates to an adapter, a camera system, and an adapter control program.

There is an interchangeable lens type camera system including a camera body and an interchangeable lens that can be attached to and detached from the camera body (for example, see Patent Document 1).
In this interchangeable lens camera system, it is possible to capture images through various types of optical systems by changing the interchangeable lens mounted on the camera body.

JP 2008-275890 A

In recent years, in a digital camera system, a new lens interchangeable camera system has been developed in which the size of the camera body is smaller than before.
However, the camera body of this new interchangeable lens camera system may not be able to function by attaching the interchangeable lens of the existing camera system.
By the way, existing interchangeable lenses are generally widely used. Therefore, in a new interchangeable lens type camera system, in order to enable imaging through various types of optical systems, it is desirable that an existing interchangeable lens can be mounted and functioned. ing.

  The present invention has been made in view of such circumstances, and an object thereof is an adapter, a camera system, and an adapter capable of appropriately functioning various types of optical systems in an interchangeable lens camera system. It is to provide a control program.

  The present invention has been made in order to solve the above-described problems. The present invention provides a first mount portion to which a camera body can be attached and detached, and a focus lens that is provided separately from the first mount portion and performs focus adjustment. The position information of the focus lens is generated by a second mount portion to which the interchangeable lens can be attached and a pulse signal output from the interchangeable lens by the movement of the focus lens, and the position information is transmitted to the camera body. An adapter control unit, and the adapter control unit is an adapter that generates and transmits the position information after starting the supply of power to the interchangeable lens.

  Moreover, this invention is a camera system provided with the said adapter, the said camera body with which the said 1st mount part was mounted | worn, and the said interchangeable lens with which the said 2nd mount part was mounted | worn.

  In addition, the present invention provides a first mount portion to which a camera body can be attached and detached, and a second mount portion that is provided separately from the first mount portion and to which an interchangeable lens having a focus lens for performing focus adjustment can be attached and detached. An adapter control program for controlling the operation of the adapter control unit provided in the adapter, the position information of the focus lens is generated by a pulse signal output from the interchangeable lens by the movement of the focus lens, An adapter control program for executing the step of transmitting the position information to the camera body and the step of generating and transmitting the position information after starting the supply of power to the interchangeable lens.

  According to the present invention, various types of optical systems can appropriately function in an interchangeable lens camera system.

It is a perspective view which shows the structure of the camera system by one Embodiment of this invention. It is a perspective view which shows an example of a structure of the adapter by this embodiment. It is a schematic block diagram which shows the 1st example of a structure of the camera system by this embodiment. It is a schematic block diagram which shows an example of a structure of an adapter power supply part and a power supply system. It is a schematic block diagram which shows the 2nd example of a structure of the camera system by this embodiment. It is a schematic block diagram which shows the 3rd example of a structure of the camera system by this embodiment. It is a schematic block diagram which shows the 4th example of a structure of the camera system by this embodiment. It is a flowchart which shows the outline | summary of the state transition of the process which concerns on the interchangeable lens by this embodiment. It is a figure which shows an example of the communication sequence of command data communication in a lens regular process. It is a figure which shows an example of the communication command divided and communicated in multiple times within 1 lens regular communication. It is a figure which shows an example of the communication sequence which detects the drive state of an optical system drive part. It is a figure which shows an example of the process sequence of a lens starting process. It is a figure which shows an example of the process sequence of the initialization process in a lens starting process. It is a figure which shows an example of the data structure of the initialization information by command data communication. It is a figure which shows an example of the process sequence of a power-supply-cutoff process and a sleep process. It is a figure which shows an example of the process sequence at the time of a power supply interruption. It is an example of the functional block diagram of the camera system by this embodiment. It is a timing chart which shows the example of the hot line communication of the data communication system D2b. It is a timing chart which shows a signal in case the AF encoder with which an interchangeable lens is a two-phase type. It is a timing chart which shows a signal in case the AF encoder with which an interchangeable lens is a 1 phase type. It is a figure which shows an example of the process sequence of the initialization process in a lens starting process. It is a figure which shows an example of the communication sequence of hotline communication. It is a figure which shows an example of the communication sequence which detects the drive state of an optical system drive part.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view showing a configuration of a camera system 1 according to an embodiment of the present invention.
A camera system 1 shown in FIG. 1 is an interchangeable lens camera system, and is provided between a camera body 100, an interchangeable lens 200, and the camera body 100 and the interchangeable lens 200. The adapter 300 is detachably fixed to each other.
In this figure, the adapter 300 is attached to the camera body 100. The interchangeable lens 200 is attached to the camera body 100 via the adapter 300.

In this camera system 1, the specification of the camera body side mount 101 which is a lens mount provided in the camera body 100 and the specification of the lens side mount 201 which is a lens mount provided in the interchangeable lens 200 are different from each other. is there. For example, the specifications of the camera body side mount 101 and the specifications of the lens side mount 201 are different from each other in the specifications of the mount shape and the specifications of the connection terminals to be electrically connected. Further, the communication standard and the type of communication data communicated via the connection terminal are different from each other. Therefore, the interchangeable lens 200 cannot be directly attached to the camera body 100.
Therefore, the adapter 300 is configured as a mount adapter that allows the camera body 100 and the interchangeable lens 200 to be mounted indirectly. Furthermore, the adapter 300 is configured to enable communication between the camera body 100 and the interchangeable lens 200 having different communication standards and communication data types without changing the communication standards. Has been.
In addition, the camera body 100 includes a power button 131, a release button 132, a rear operation unit 133, and a display unit 150.
The power button 131 is an operation member for switching the main power source on and off in the camera body 100.
The release button 132 is an operation member that receives an instruction to start shooting processing. For example, the release button 132 is pressed halfway (half-pressed state, for example, accepting focus adjustment, exposure adjustment, etc.) and fully pressed (full-pressed state, for example, accepting an instruction to start exposure). Two types of shooting processing start instructions are accepted.
The back operation unit 133 is provided on the back surface of the housing surface of the camera body 100, which is the surface opposite to the surface provided with the camera body side mount 101. The rear operation unit 133 includes operation members such as operation mode selection buttons (for example, a mode dial) or various setting condition selection buttons (for example, a menu button and up / down / left / right selection buttons). .
The display unit 150 is provided on the back side similarly to the back side operation unit 133, and displays a captured image or a menu screen for selecting various setting conditions. The display unit 150 includes, for example, a liquid crystal display or an organic EL (Electro-Luminescence) display.

FIG. 2 is a perspective view showing an example of the configuration of the adapter 300 according to the present embodiment.
The adapter 300 includes a first mount part to which the camera body 100 can be attached and detached, and a second mount part that is provided separately from the first mount part and from which the interchangeable lens 200 can be attached and detached.
For example, as illustrated in FIG. 2, the adapter 300 includes a first mount 301 (first mount portion) that can be attached to and detached from the camera body side mount 101 included in the camera body 100, and a lens side mount included in the interchangeable lens 200. 201, a second mount 302 (second mount portion) that can be attached to and detached from the device 201.
A plurality of electrical connection terminals (mount contacts) corresponding to each of the plurality of electrical connection terminals provided in the vicinity of the camera body side mount 101 are provided in the vicinity of the first mount 301. ing. Thereby, when the adapter 300 is attached to the camera body 100, the adapter 300 is electrically connected to the camera body 100 via the plurality of connection terminals.
A plurality of electrical connection terminals corresponding to each of the plurality of electrical connection terminals provided in the vicinity of the lens side mount 201 are provided in the vicinity of the second mount 302.
Accordingly, when the adapter 300 is attached to the interchangeable lens 200, the adapter 300 is electrically connected to the interchangeable lens 200 via the plurality of connection terminals.

The adapter 300 includes a tripod seat 305 that enables the adapter 300 to be attached to a tripod, a lens attaching / detaching button 306, and an aperture interlocking lever 350.
The lens attaching / detaching button 306 is a button for unlocking a lock mechanism that is mechanically locked when the interchangeable lens 200 is attached. That is, the lens attaching / detaching button 306 is an operation member that is operated when the user removes the interchangeable lens 200 attached to the adapter 300.

The aperture interlocking lever 350 (aperture interlocking mechanism) includes an aperture mechanism 251 (FIG. 5) that includes a plurality of aperture blades that change the aperture diameter (aperture aperture amount, aperture size, aperture ratio, aperture value) of the interchangeable lens 200. 3), the adapter 300 is provided as a lever for displacing. When the position of the diaphragm interlocking lever 350 moves in the direction along the inner periphery of the adapter 300, the aperture diameter of the diaphragm of the interchangeable lens 200 is changed.
For example, the interchangeable lens 200 includes a diaphragm lever 252 (see FIG. 3) that displaces the diaphragm mechanism 251. Therefore, the aperture diameter of the interchangeable lens 200 is displaced by the movement of the aperture lever 252 position. The aperture lever 252 is configured to engage with the aperture interlocking lever 350 and move in conjunction with the aperture interlocking lever 350. For this reason, the aperture opening diameter of the interchangeable lens 200 changes as the position of the aperture interlocking lever 350 moves.
That is, the aperture interlocking lever 350 moves to a position corresponding to the aperture value of the aperture mechanism 251 (aperture) provided in the interchangeable lens 200.

<Description of block configuration of camera system>
Next, the block configuration of the camera system 1 will be described with reference to FIG.
FIG. 3 is a schematic block diagram illustrating an example of the configuration of the camera system 1 according to the present embodiment. In this figure, the camera body 100 and the interchangeable lens 200 are attached via an adapter 300. In addition, the camera body 100, the interchangeable lens 200, and the adapter 300 are electrically connected to each other via connection terminals.

First, an outline of the configuration of the camera system 1 will be described.
The camera body 100 includes a camera body side mount 101 including a connection portion 101s. The adapter 300 includes a first mount 301 including a connection portion 301s and a second mount 302 including a connection portion 302s. The interchangeable lens 200 includes a lens side mount 201 including a connection portion 201s.

The camera body 100 and the adapter 300 are mounted (physically connected) via the camera body side mount 101 and the first mount 301, and are electrically connected via the connection portion 101s and the connection portion 301s. Yes. Each of the connection portion 101s and the connection portion 301s includes twelve connection terminals (terminals Ta1 to Ta12 and terminals Tb1 to Tb12) that are electrically connected to each other, and the camera body 100 and the adapter are connected via the connection terminals. Power supply (voltage supply) and signal exchange (communication) are performed with 300.
In addition, transmission / reception (communication) of a signal is performed between the camera control part 110 with which the camera body 100 is provided, and the adapter control part 310 with which the adapter 300 is provided.

Further, the interchangeable lens 200 and the adapter 300 are mounted (physically connected) via the lens side mount 201 and the second mount 302, and are electrically connected via the connection portion 201s and the connection portion 302s. ing. Each of the connection portion 201s and the connection portion 302s includes nine connection terminals (terminals Tc1 to Tc9 and terminals Td1 to Td9) that are electrically connected to each other. Power supply (voltage supply) and signal exchange (communication) are performed with the adapter 300.
Note that transmission / reception (communication) of signals is performed between the lens control unit 210 provided in the interchangeable lens 200 and the adapter control unit 310 provided in the adapter 300.

(Configuration of camera body)
Next, the configuration of the camera body 100 will be described.
The camera body 100 includes a camera control unit 110, a camera power supply unit 120, a switch 125, a battery unit 190B, and connection units 101s (terminals Ta1 to Ta12).
101 s of connection parts are provided with 12 connection terminals of terminal Ta1-Ta12 as a connection terminal mutually connected with 12 connection terminals (terminal Tb1-Tb12) of the connection part 301s with which the adapter 300 is provided.
The configuration of the adapter 300 will be described later in detail.

The battery unit 190B houses the battery 190.
The battery 190 supplies voltage to the camera body 100, the interchangeable lens 200, and the adapter 300. For example, the battery 190 is a lithium ion secondary battery or a nickel hydride secondary battery. The battery 190 may be a primary battery such as an alkaline battery. Further, the camera body 100 is not limited to the configuration in which the voltage is supplied from the battery 190, and the voltage is supplied from an external DC power source (for example, an AC adapter that converts the AC power source into a DC power source and supplies the voltage). Also good.

  The camera power supply unit 120 converts the battery voltage so that the voltage supplied from the battery 190 can be supplied to the camera body 100 or a camera accessory connected to the camera body 100. For example, the camera power supply unit 120 converts the battery voltage to supply a voltage to a control system circuit (mainly the camera control unit 110) included in the camera body 100, and the camera power supply unit 120 is connected to the power supply Vcc0. The power supply Vcc1 that is a first power supply system that supplies a voltage to the adapter 300 connected to the unit 101s is divided. The voltage of the power supply Vcc1 is supplied to a control system circuit (mainly the adapter control unit 310) provided in the adapter 300. Hereinafter, this power supply Vcc1 is referred to as a control system power supply Vcc1.

Further, the camera power supply unit 120 switches between a voltage supply state and a supply stop state by the control system power supply Vcc1 under the control of the camera control unit 110. Furthermore, the camera power supply unit 120 controls the power that can be supplied (power amount, power supply amount) under the control of the camera control unit 110. For example, the camera power supply unit 120 is in a state (normal power supply state) in which the power (power amount, power supply amount) that can be supplied to the extent that the camera system 1 can execute the imaging process is large, and to the extent that the imaging process cannot be performed. The state (small power supply state) with a small amount of power (power amount, power supply amount) that can be supplied is switched.
The voltage of the control system power supply Vcc1 is supplied to the adapter control unit 310 via the terminal Ta3 and the terminal Tb3.

  Further, the positive terminal of the battery 190 and the terminal Ta2 are connected to the battery part 190B via the switch 125. As a result, the power supply PWR as the second power supply system is generated from the battery 190 separately from the power supply Vcc1 as the first power supply system described above, and the voltage from the power supply PWR is supplied to the adapter power supply unit 320. The voltage of the power supply PWR is supplied to the adapter power supply unit 320 via the terminal Ta2 and the terminal Tb2. Instead of the battery 190, the voltage of the power source PWR may be supplied from an external DC power source. The power supply PWR is a power supply system that can supply more power than the control system power supply Vcc1. Hereinafter, this power supply PWR is referred to as a power system power supply PWR.

The power system ground PGND, which is a ground (GND) corresponding to the power system power supply PWR, is connected to each part to which the voltage of the power system power supply PWR is supplied and the terminal Ta1. On the other hand, a control system ground SGND that is a ground corresponding to the control system power supply Vcc1 is connected to the terminal Ta12. The power system ground PGND and the control system ground SGND are grounds having the same potential as the negative terminal of the battery 190 via the battery unit 190B.
The control system ground SGND is also a ground corresponding to the power supply Vcc0, and the control system ground SGND is connected to the ground terminal of the camera control unit 110.

  The switch 125 switches between a conduction state and a cutoff state (non-conduction state) under the control of the camera control unit 110. That is, the switch 125 switches whether to supply the voltage of the power system power supply PWR to the terminal Ta2 under the control of the camera control unit 110.

  The camera control unit 110 includes a camera power control unit 111, a first camera communication unit 112, and a second camera communication unit 113. The camera control unit 110 controls each unit included in the camera body 100, and the first data communication system D1b and the second data communication with the adapter control unit 310 of the adapter 300 connected via the connection unit 101s. Two systems of communication with the system D2b are performed.

The camera power supply control unit 111 controls the camera power supply unit 120 and the switch 125 based on the state of the camera body 100 or the communication state by the first camera communication unit 112 or the second camera communication unit 113.
Each of the first camera communication unit 112 and the second camera communication unit 113 independently performs two systems of communication of the first data communication system D1b and the second data communication system D2b.

The first data communication system D1b is a communication system using serial interface full-duplex communication. The first camera communication unit 112 performs transmission / reception (communication) of four types of signals RDY, CLK1, DATAB, and DATAL as the first data communication system D1b.
The signal RDY is a signal for notifying the first camera communication unit 112 of whether communication is possible. The signal RDY is transmitted (output) from the first adapter communication unit 312 described later to the first camera communication unit 112 via the terminal Ta4. The signal CLK1 is a clock signal for serial communication. The clock signal CLK1 is transmitted (output) from the first camera communication unit 112 to the first adapter communication unit 312 via the terminal Ta5. The signal DATAB is a data signal related to the camera body 100 that is output from the first camera communication unit 112 to the first adapter communication unit 312 via the terminal Ta6. The signal DATAL is a data signal related to the interchangeable lens 200 that is output from the first adapter communication unit 312 to the first camera communication unit 112. The first camera communication unit 112 receives the signal DATAL via the terminal Ta7.

The second data communication system D2b is a serial interface system, and is a communication system using unidirectional communication in which data is transmitted to the camera body 100. The second camera communication unit 113 performs transmission / reception (communication) of four types of signals HREQ, HANS, HCLK, and HDATA.
The signal HREQ is a signal indicating a communication request from the second camera communication unit 113, and the second camera communication unit 113 transmits (outputs) to the second adapter communication unit 313 described later via the terminal Tb8. . The signal HANS is a signal indicating a communication response to the second camera communication unit 113, and is transmitted from the second adapter communication unit 313 to the second camera communication unit 113 via the terminal Tb9. The signal HCLK is a clock signal for serial communication. The clock signal HCLK is transmitted (output) from the second camera communication unit 113 to the second adapter communication unit 313 via the terminal Tb10. The signal HDATA is a lens data signal transmitted from the second adapter communication unit 313 to the second camera communication unit 113 via the terminal Tb11.

  The contents of communication in the first data communication system D1b and the second data communication system D2b will be described in detail later.

(Configuration of interchangeable lens)
Next, the configuration of the interchangeable lens 200 will be described.
The interchangeable lens 200 includes a connection unit 201s (terminals Td1 to Td9), a lens control unit 210, an optical system 220, and an optical system driving unit 230.
Subject light (optical image) incident through the optical system 220 is guided to a light receiving surface of a well-known imaging element (not shown) provided in the camera body 100 through an adapter 300.
The optical system 220 includes a lens 221, a focus adjustment lens (hereinafter referred to as a focus lens) 222, and an image blur correction (anti-vibration) lens (hereinafter referred to as a VR (Vibration Reduction) lens) 223. And a diaphragm unit 250.

  The aperture unit 250 includes an aperture mechanism 251 including a plurality of aperture blades, and an aperture lever 252 that mechanically operates the aperture mechanism 251. Therefore, the aperture diameter of the interchangeable lens 200 changes when the aperture lever 252 mechanically operates the aperture mechanism 251. The interchangeable lens 200 in the camera system 1 shown in FIG. 3 is a lens that does not incorporate a power source such as an actuator that drives the diaphragm mechanism 251, and the diaphragm mechanism 252 of the adapter 300 is coupled to the diaphragm mechanism 252 via the diaphragm lever 252. Reference numeral 251 denotes a lens to be driven.

The optical system driving unit 230 includes an AF (Auto Focus) driving unit 231, an AF encoder 232, and a VR driving unit 235.
The AF driving unit 231 drives the focus lens 222 under the control of the lens control unit 210. The AF encoder 232 detects the position of the focus lens 222 and supplies the detection result to the lens control unit 210.
The VR drive unit 235 drives the VR lens 223 under the control of the lens control unit 210.
Note that the interchangeable lens 200 may include a focus ring that moves the position of the focus lens 222 when manually operated by the user.

The connection unit 201s includes nine connection terminals Td1 to Td9 as connection terminals connected to the nine connection terminals (terminals Tc1 to Tc9) of the connection unit 302s included in the adapter 300.
The power source Vp to which the voltage of the optical system driving unit 230 is supplied is supplied via the terminal Td2. Hereinafter, this power source Vp is referred to as a lens driving system power source Vp. The lens driving system power supply Vp is supplied from the power system power supply PWR via the adapter 300.
For example, the lens driving system power supply Vp is supplied from the terminal Td2 to the optical system driving unit 230 that consumes a large amount of power, such as an actuator that drives the focus lens 222 provided in the AF driving unit 231 and an actuator that drives the VR lens 223. Is supplied. A power system ground PGND that is a ground corresponding to the lens driving system power supply Vp is connected to the ground terminal of the optical system driving unit 230 and the terminal Td1.

A power supply Vc to which the voltage of the lens control unit 210 is supplied is connected to the terminal Td3. Hereinafter, this power source Vc is referred to as a lens control system power source Vc. The lens control system power supply Vc is supplied from the power system power supply PWR via the adapter 300.
The voltage of the lens control system power supply Vc is supplied to the control system circuit including the lens control unit 210 that consumes less power than the optical system driving unit 230 via the terminal Td3. A control system ground SGND that is a ground corresponding to the lens control system power supply Vc is connected to the ground terminal of the lens control unit 210 and the terminal Td9.
That is, the power system ground PGND and the control system ground SGND are not connected to each other in the interchangeable lens 200 and are separated into two systems of ground.

  The lens control unit 210 includes an optical system control unit 211, a first lens communication unit 212, and a second lens communication unit 213. The lens control unit 210 controls the optical system driving unit 230, and the first data communication system D1L and the second data communication system D2L with the adapter control unit 310 of the adapter 300 connected via the connection unit 201s. The two systems of communication are controlled.

  The optical system control unit 211 controls the optical system drive unit 230. For example, the optical system control unit 211 initializes the optical system drive unit 230 according to the communication state with the adapter 300. Further, the optical system control unit 211 controls the optical system drive unit 230 so as to drive a drive element such as the focus lens 222 or the VR lens 223 according to the control of the camera control unit 110 via the adapter 300. Further, the optical system control unit 211 acquires information on the optical system (driving element) 220 supplied from the optical system driving unit 230 (for example, information such as the position of the focus lens 222 detected by the AF encoder 232).

The first lens communication unit 212 and the second lens communication unit 213 respectively execute two systems of communication of the first data communication system D1L and the second data communication system D2L at independent timings.
The first data communication system D1L is a communication system using serial interface half duplex communication. The first lens communication unit 212 performs communication of the three types of signals R / W, CLK2, and DATA as the first data communication system D1L.
The signal R / W is a read / write signal indicating a communication direction of a data signal to be described later, but is used as a signal for handshaking between the lens side and the adapter, and is described below with a first adapter communication to be described later via a terminal Td4. Data is transmitted and received between the unit 312 and the first lens communication unit 212. The signal CLK2 is a clock signal for serial communication, and is transmitted (output) from the first adapter communication unit 312 to the first lens communication unit 212 via the terminal Td5. The signal DATA is a data signal transmitted and received between the first adapter communication unit 312 and the first lens communication unit 212 via the terminal Td6.

The second data communication system D2L is a pulse communication system, and is a communication system based on unidirectional communication in which a pulse signal is output from the interchangeable lens 200. The second lens communication unit 213 transmits two types of pulse signals of signals HLP1 and HLP2 as the second data communication system D2L.
The signal HLP1 is a pulse signal transmitted to the second adapter communication unit 313, which will be described later, via the terminal Td7. The signal HLP2 is a pulse signal output from the second lens communication unit 213 to the second adapter communication unit 313 via the terminal Td8. These pulse signals HLP 1 and HLP 2 are pulse signals corresponding to signals output from the AF encoder 232.

  The contents of communication communicated in the first data communication system D1L and the second data communication system D2L will be described in detail later.

(Adapter configuration)
Next, the configuration of the adapter 300 will be described.
The adapter 300 includes an adapter control unit 310, an adapter power supply unit 320, an aperture interlocking lever driving unit 330 (aperture interlocking mechanism driving unit), a connection unit 301s (terminals Tb1 to Tb12), and a connection unit 302s (terminals Tc1 to Tc9). ) And an aperture interlocking lever 350.

  The connection portion 301s includes twelve connection terminals Tb1 to Tb12 that are connected to the twelve connection terminals Ta1 to Ta12 described above on the camera body 100 side. When the adapter 300 and the camera body 100 are connected via the connection part 301s and the connection part 101s, the terminals Tb1 to Tb12 of the connection part 301s correspond to the terminals Ta1 to Ta12 of the connection part 101s, respectively. Electrically connect to the connection terminal.

  The connection portion 302s includes nine connection terminals Tc1 to Tc9 that are connected to the nine connection terminals (terminals Td1 to Td9) described above on the interchangeable lens 200 side. When the adapter 300 and the interchangeable lens 200 are connected via the connection portion 302s and the connection portion 201s, the terminals Tc1 to Tc9 of the connection portion 302s correspond to the terminals Td1 to Td9 of the connection portion 201s, respectively. Connect to the connection terminal.

Terminal Tb2 is connected to terminal Ta2, and terminal Tb3 is connected to terminal Ta3. As a result, the voltage of the power system power supply PWR is supplied from the camera body 100 to the terminal Tb2 through the terminal Ta2, and the voltage of the control system power supply Vcc1 is supplied to the terminal Tb3 through the terminal Ta3. As a result, the adapter power supply unit 320 is supplied with the voltage of the power system power supply PWR from the camera body 100 via the terminal Ta2 and the terminal Tb2.
On the other hand, the adapter control unit 310 is supplied with the voltage of the control system power supply Vcc1 from the camera body 100 via the terminal Ta3 and the terminal Tb3.

As described above, the adapter 300 includes the voltage of the control system power supply Vcc1 (the voltage of the first power supply system) from the camera body 100 and the voltage of the power system power supply PWR (the first power supply that can be supplied in comparison with the control system power supply Vcc1). And two power supply system voltages). The lens system power supply Vp (third power supply system) and the lens control system power supply Vc (fourth) are used as the lens system power supply system that supplies the interchangeable lens 200 with the voltage of the power system power supply PWR supplied to the adapter power supply unit 320. (Converted). For example, the adapter power supply unit 320 generates supply voltages for the lens drive system power supply Vp and the lens control system power supply Vc that supply power to the interchangeable lens 200 from the power system power supply PWR supplied from the camera body 100.
The voltage supplied from the lens drive system power supply Vp is larger than the voltage supplied from the lens control system power supply Vc. Further, the power consumption in the load supplied from the lens drive system power supply Vp may be larger than the power consumption in the load supplied from the lens control system power supply Vc.

Further, from the power system power supply PWR supplied to the adapter power supply section 320, a power supply Vm (fifth) for supplying a voltage to the aperture interlocking lever drive section 330, separately from the lens drive system power supply Vp and the lens control system power supply Vc described above. A power system is also generated (separated). Hereinafter, this power source Vm is referred to as a diaphragm driving power source Vm.
For example, the adapter power supply unit 320 includes a voltage conversion unit that converts the voltage of the power system power supply PWR into a predetermined voltage of the diaphragm drive power supply Vm. The voltage conversion unit includes, for example, a DC-DC converter. The voltage conversion unit converts the voltage into a voltage that is stepped up and down to a predetermined voltage (a predetermined voltage of the diaphragm driving power source Vm), for example. Then, the adapter power supply unit 320 supplies the generated voltage of the diaphragm driving power source Vm to the diaphragm interlocking lever driving unit 330.
Note that the adapter power supply unit 320 may include a first regulator unit that converts (generates) the voltage of the lens control system power supply Vc based on the voltage of the diaphragm drive power supply Vm. For example, the first regulator unit converts the voltage of the diaphragm driving power source Vm into a voltage that is stepped down to a predetermined voltage (a predetermined voltage of the lens control system power source Vc). For example, this 1st regulator part is good also as a structure provided with the 1st linear regulator. The voltage of the diaphragm driving power source Vm is set to be higher than the voltage of the lens control system power source Vc.
Further, the adapter power supply unit 320 may include a second regulator unit that converts (generates) the voltage of the lens driving system power supply Vp based on the voltage of the power system power supply PWR. For example, the second regulator unit converts the voltage of the power system power supply PWR into a voltage that is stepped down to a predetermined voltage (a predetermined voltage of the lens driving system power supply Vp). For example, this 2nd regulator part is good also as a structure provided with the 2nd linear regulator. In this case, the second regulator unit is configured such that the power that can be supplied is larger than the first regulator unit (the amount of power supply is large). The adapter power supply unit 320 includes a voltage detection unit that detects a power supply voltage, and supplies the detection result to the adapter control unit 310.
The internal configuration of the adapter power supply unit 320 will be described later with reference to FIG.

The connection of each power supply system converted by the adapter power supply unit 320 is as follows.
The terminal Tc2 is connected to the lens drive system power supply Vp output terminal (terminal that outputs the voltage of the lens drive system power supply Vp) of the adapter power supply unit 320. Further, the terminal Tc3 is connected to the lens control system power supply Vc output terminal of the adapter power supply unit 320 (terminal that outputs the voltage of the lens control system power supply Vc). Thereby, the adapter power supply unit 320 supplies the voltage of the lens driving system power supply Vp to the terminal Tc2, and supplies the voltage of the lens control system power supply Vc to the terminal Tc3.
Further, the adapter power supply unit 320 supplies the voltage of the lens drive system power supply Vp to the optical system drive unit 230 of the interchangeable lens 200 via the terminal Tc2 and the terminal Td2.
Further, the adapter power supply unit 320 supplies the voltage of the lens control system power supply Vc to the lens control unit 210 of the interchangeable lens 200 via the terminal Tc3 and the terminal Td3.

As described above, the adapter power supply unit 320 can generate the voltage supplied to the optical system driving unit 230 and the lens control unit 210 of the interchangeable lens 200 from the voltage of the power system power supply PWR.
Accordingly, the adapter 300 can set the voltage of the control system power supply Vcc1 supplied from the camera body 100 to the voltage supplied to the adapter control unit 310 without using the voltage supplied to the interchangeable lens 200. The camera power supply unit 120 in the camera body 100 is configured to constantly supply the control system power supply Vcc1 (as long as there is a “supply request” from the connection destination) to the connection destination connected via the terminal Ta3. Has been. For this reason, the adapter controller 310 connected to the terminal Ta3 via the terminal Tb3 can always be activated even if the power switch on the camera body 100 side is turned off. By always starting the adapter control unit 310, it is possible to store the setting state on the adapter 300 side (for example, whether or not the initialization process of the aperture interlock lever 350 has been completed). There is an advantage that when the power switch on the 100 side is turned on, unnecessary initialization processing is not required in the adapter 300. Although not described in the present embodiment, when a camera body activation switch that can be operated by the user (a switch for switching the power ON / OFF on the adapter 300 side) is provided on the adapter 300 side, the activation switch is turned on. Since the operation can be constantly monitored, it is possible to configure a system in which the camera body 100 is activated by an operation on the adapter 300 side (by the way, the control system power supply Vcc1 is lens-controlled so that the lens control unit 210 is always activated. When the system configuration for transmitting to the unit 210 is adopted, even if an operation switch for activating the camera body 100 is provided on the interchangeable lens 200 side, the activated state is established between both the interchangeable lens 200 and the camera body 100. There is no adapter (because power is not supplied) Therefore, it is impossible to convey the operation of the operation switch of the interchangeable lens 200 to the camera body 100 side, it is not possible to activate the camera body 100).

  Further, the adapter power supply unit 320 supplies the voltage of the diaphragm driving power source Vm in the adapter 300 to the diaphragm interlocking lever driving unit 330. That is, the adapter 300 generates a voltage to be supplied to the aperture interlocking lever driving unit 330 from the voltage of the power system power supply PWR supplied from the camera body 100. Since the power system power supply PWR has a sufficiently larger power supply than the control system power supply Vcc1, the power system power supply PWR can be used for power supply to various circuits, and from the power system power supply PWR as in this embodiment. Even if a voltage to be supplied to the aperture interlocking lever driving unit 330 is created (also used as the power system power supply PWR), it adversely affects the operation of other circuits (for example, the operation of the lens control unit 210 described above). Never give.

  The terminal Tb1 is connected to the terminal Ta1 of the camera body 100. Thereby, the power system ground PGND is connected to the terminal Tb1 via the terminal Ta1. Further, the terminal Tb1 and the terminal Tc1 are connected as a power system ground PGND in the adapter 300. Further, the terminal Tc1 is connected to the terminal Td1 of the interchangeable lens 200. Thereby, the power system ground PGND is connected to the terminal Td1 via the terminal Tc1 as a ground corresponding to the lens driving system power supply Vp. The power system ground PGND is also connected as a ground for the adapter power supply unit 320, the diaphragm interlocking lever driving unit 330, and the like.

  The terminal Tb12 is connected to the terminal Ta12 of the camera body 100. Thereby, the control system ground SGND is connected to the terminal Tb12 via the terminal Ta12. The terminal Tb12 and the terminal Tc9 are connected as a control system ground SGND in the adapter 300. Further, the terminal Tc9 is connected to the terminal Td9 of the interchangeable lens 200. Thus, the control system ground SGND is connected to the terminal Td9 via the terminal Tc9 as a ground corresponding to the lens control system power supply Vc. The control system ground SGND is also connected as a ground for the adapter control unit 310.

Thus, the power system ground PGND and the control system ground SGND are not connected to each other in the adapter 300 and are separated into two systems of ground.
That is, in the interchangeable lens 200 and the adapter 300, the power system ground PGND and the control system ground SGND are not connected to each other and are separated into two systems of ground. However, the power system ground PGND and the control system ground SGND that are separated into two systems are connected in the camera body 100 and are grounded at the same potential as the negative electrode of the battery 190. Accordingly, the grounds of the camera control unit 110, the lens control unit 210, and the adapter control unit 310 are connected to the control system ground SGND and have the same potential.
Therefore, it is possible to reduce the influence of noise generated in the power system ground PGND on the control system ground SGND.

In the interchangeable lens 200, the control system ground SGND may be connected to the conductive portion (interchangeable lens housing) of the lens side mount 201. Further, the terminal Td9 to which the control system ground SGND is connected in the interchangeable lens 200 may be included in the conductive portion of the lens side mount 201. Similarly, in the adapter 300, the control system ground SGND may be connected to the conductive part of the second mount 302. In addition, the terminal Tc9 to which the control system ground SGND is connected in the adapter 300 may be included in the conductive portion of the second mount 302.
Further, similarly, the terminal Tb12 may be connected to the conductive portion of the first mount 301, and the terminal Tb12 may be included in the conductive portion of the first mount 301.
Similarly, the terminal Ta12 may be connected to the conductive part of the camera body side mount 101, and the terminal Ta12 may be included in the conductive part of the camera body side mount 101.

  The aperture interlocking lever driving unit 330 moves the position of the aperture interlocking lever 350 under the control of the adapter control unit 310. The aperture interlocking lever driving unit 330 moves the aperture interlocking lever 350 to displace the aperture mechanism 251 of the interchangeable lens 200 via the aperture lever 252. Further, the aperture interlocking lever driving unit 330 detects the position of the aperture interlocking lever 350 and outputs the detection result to the adapter control unit 310.

  For example, the aperture interlocking lever driving unit 330 detects the position of an aperture driving actuator (for example, a stepping motor) that drives the aperture interlocking lever 350, a motor driving unit that drives and controls the aperture driving actuator, and the position of the aperture interlocking lever 350. A diaphragm interlocking lever position detection unit is provided. As a result, in the aperture interlocking lever driving unit 330, the motor driving unit drives the aperture driving actuator, so that the aperture driving actuator drives the aperture interlocking lever 350. In the aperture interlocking lever driving unit 330, an aperture interlocking lever position detection unit (for example, a photo interrupter) detects the position of the aperture interlocking lever 350 and supplies the detection result to the adapter control unit 310.

The adapter control unit 310 includes an adapter power supply control unit 311, a first adapter communication unit 312, a second adapter communication unit 313, and an aperture control unit 314. The adapter control unit 310 is controlled by periodic communication with the camera control unit 110 to control processing performed in each unit included in the adapter 300 and performs periodic communication with the lens control unit 210. . For example, the adapter control unit 310 performs regular periodic communication with the camera control unit 110. The adapter control unit 310 also performs regular periodic communication with the lens control unit 210.
The adapter control unit 310 controls the aperture interlocking lever driving unit 330 and the optical system driving unit 230 of the interchangeable lens 200 based on communication from the camera control unit 110 for controlling the photographing process. Therefore, communication with the lens control unit 210 is performed.
The adapter power supply control unit 311 controls the adapter power supply unit 320 according to the communication result with the camera control unit 110 or the lens control unit 210, the state of the adapter 300, or the like. For example, the adapter power supply control unit 311 controls the adapter power supply unit 320 according to the result of communication with the camera control unit 110 or the lens control unit 210, and the lens control system power supply Vc, the lens drive system power supply Vp, or the aperture drive It is controlled whether or not the voltage of the power source Vm is supplied.
The adapter power supply control unit 311 generates the voltage of the power supply system to which the voltage is supplied from the camera body 100 (in other words, the state of the voltage supplied from the camera body 100 side to the adapter 300) and the adapter 300 Then, the voltage of the power supply system that supplies the voltage (in other words, the state of the voltage supplied to the interchangeable lens 200 from the adapter 300 side) is monitored. The adapter power supply control unit 311 includes a voltage detection unit that detects the voltage of each power supply system. The adapter power supply control unit 311 monitors the voltage of each power supply system based on the detection result from the voltage detection unit, and the monitoring result is used as necessary. To the camera control unit 110. This operation will be described in detail later in “Processing at the time of instantaneous power interruption” (FIG. 16).

The aperture control unit 314 controls the aperture interlocking lever driving unit 330 according to the communication result with the camera control unit 110 or the lens control unit 210.
For example, the diaphragm control unit 314 determines that the diaphragm opening diameter (opening) of the diaphragm mechanism 251 is in accordance with the communication result with the camera control unit 110 and the diaphragm opening diameter (opening) according to the control instruction from the camera control unit 110. ) To control the aperture interlocking lever driving unit 330.
Further, the aperture control unit 314 controls the aperture interlocking lever driving unit 330 to move the position of the aperture interlocking lever 350 to the initial position according to the processing. For example, the aperture control unit 314 interlocks with the aperture at an initial position, such as a position at which the aperture mechanism 251 is opened, a retracted position that does not interfere with the aperture lever 252 that moves according to a set aperture value of the aperture mechanism 251, and the like. The diaphragm interlocking lever driving unit 330 is controlled to move the lever 350.
The aperture control unit 314 also acquires the position of the aperture interlocking lever 350 detected by the aperture interlocking lever driving unit 330.

The first adapter communication unit 312 performs communication of the first data communication system D1b with the first camera communication unit 112, and performs communication of the first data communication system D1L with the first lens communication unit 212. To do.
Specifically, the first adapter communication unit 312 relays communication between the first data communication system D1b and the first data communication system D1L, which are different communication standards. For example, the first adapter communication unit 312 serially converts the data received from the first camera communication unit 112 according to the communication standard (first communication standard) of the first data communication system D1b, which is a serial interface type full-duplex communication. The data is converted into data of the communication standard (second communication standard) of the data communication system D1L which is half duplex communication of the interface method, and is transmitted to the first lens communication unit 212. On the other hand, the first adapter communication unit 312 receives the data received from the first lens communication unit 212 in accordance with the communication standard (second communication standard) of the data communication system D1L, which is a serial interface type half-duplex communication. Is converted to data of the communication standard (first communication standard) of the data communication system D1b, which is full-duplex communication, and transmitted to the first camera communication unit 112.
The first adapter communication unit 312 relays communication between the first data communication system D1b and the first data communication system D1L that are communicated with each other at different periods.
In addition, the first adapter communication unit 312 performs a conversion process for ensuring the consistency of the format of data transmitted and received between the first data communication system D1b and the first data communication system D1L.
The adapter control unit 310 includes, for example, a storage unit (not shown). The first adapter communication unit 312 temporarily stores data generated based on received data, converted data, and the like in the storage unit. Then, the first adapter communication unit 312 reads the generated data from the storage unit and transmits it.

The first adapter communication unit 312 and the first camera communication unit 112 perform communication of the first data communication system D1b via four types of signal lines of signals RDY, CLK1, DATAB, and DATAL. The terminal Tb4 is connected to the first adapter communication unit 312 via the signal line of the signal RDY. The terminal Tb5 is connected to the first adapter communication unit 312 via the signal line of the signal CLK1, the terminal Tb6 is connected to the signal line of the signal DATAB, and the terminal Tb7 is connected to the signal line of the signal DATAL. The terminal Tb4 is connected to the terminal Ta4 of the camera body 100, the terminal Tb5 is connected to the terminal Ta5, the terminal Tb6 is connected to the terminal Ta6, and the terminal Tb7 is connected to the terminal Ta7.
That is, the four types of signal lines RDY, CLK1, DATAB, and DATAL for performing communication of the first data communication system D1b are connected to the first adapter communication unit 312 and the first via the terminals Tb4 to Tb7 and the terminals Ta4 to Ta7. The camera communication unit 112 is connected.

On the other hand, the first adapter communication unit 312 and the first lens communication unit 212 perform communication of the first data communication system D1L via three types of signal lines of signals R / W, CLK2, and DATA. The terminal Tc4 is connected to the first adapter communication unit 312 via a signal R / W signal line. The terminal Tc5 is connected to the first adapter communication unit 312 via the signal line of the signal CLK2, and the terminal Tc6 is connected to the signal line DATA. The terminal Tc4 is connected to the terminal Td4 of the interchangeable lens 200, the terminal Tc5 is connected to the terminal Td5, and the terminal Tc6 is connected to the terminal Td6.
That is, the three types of signal lines R / W, CLK2, and DATA for performing communication of the first data communication system D1L are connected to the first adapter communication unit 312 and the first via the terminals Tc4 to Tc6 and the terminals Td4 to Td6. The lens communication unit 212 is connected.

As described above, communication of the first data communication system D1b and communication of the first data communication system D1L are performed between the first camera communication unit 112 and the first lens communication unit 212 via the first adapter communication unit 312. Is called. In the communication of the first data communication system D1b and the communication of the first data communication system D1L, for example, between the first camera communication unit 112 and the first lens communication unit 212 via the first adapter communication unit 312. Information of the optical system 220, a request command such as a control instruction, response data to the request command, and the like are communicated. Here, communication in the first data communication system D1b and the first data communication system D1L is referred to as “command data communication”.
The information of the optical system 220 is information indicating the type of the optical system 220 (information indicating the specifications, functions, optical characteristics, etc. of the optical system 220) or information indicating the driving state of the optical system 220.
As described above, the first adapter communication unit 312 in the adapter control unit 310 receives the camera control command output from the first camera communication unit 112 of the camera control unit 110 (in other words, the first reception unit). ) And a function of transmitting a lens control command for driving and controlling the drive element of the interchangeable lens 200 to the first lens communication unit 212 of the interchangeable lens 200 according to the content received by the first receiver (in other words, A first transmission unit), a function of receiving state information indicating the driving state of the drive element from the first lens communication unit 212 of the interchangeable lens 200 (in other words, the second reception unit), and reception by the second reception unit. A function of transmitting state information indicating the driving state of the driving element to the first camera communication unit 112 of the camera body 100 based on the content (in other words, the second transmission unit).

The second adapter communication unit 313 receives the pulse signal of the data communication system D2L (fourth communication standard) from the second lens communication unit 213 and receives the data communication system D2b (first communication) with the second camera communication unit 113. 3 communication standard).
Specifically, the second adapter communication unit 313 detects information included in the pulse signal of the data communication system D2L, and converts the detected information in accordance with the communication standard (third communication standard) of the data communication system D2b. To do. For example, the second adapter communication unit 313 receives the pulse signal received from the second lens communication unit 213 according to the communication standard (fourth communication standard) of the data communication system D2L, which is a unidirectional communication of the pulse communication method, from the serial interface method. The data is converted into data of the communication standard (third communication standard) of the data communication system D2b, which is unidirectional communication, and transmitted to the second camera communication unit 113. In addition, the second adapter communication unit 313 receives information included in the pulse signal received by the communication (fourth communication standard) of the data communication system D2L according to the control of the first adapter communication unit 312. The data is converted into a communication standard (third communication standard) and transmitted to the second camera communication unit 113.

The second adapter communication unit 313 and the second camera communication unit 113 perform communication of the second data communication system D2b via four types of signal lines of signals HREQ, HANS, HCLK, and HDATA. The terminal Tb8 is connected to the second adapter communication unit 313 via the signal line of the signal HREQ. The terminal Tb9 is connected to the second adapter communication unit 313 via the signal HANS signal line, the terminal Tb10 is connected to the signal HCLK signal line, and the terminal Tb11 is connected to the signal HDATA signal line. The terminal Tb8 is connected to the terminal Ta8 of the camera body 100, the terminal Tb9 is connected to the terminal Ta9, the terminal Tb10 is connected to the terminal Ta10, and the terminal Tb11 is connected to the terminal Ta11.
That is, the four types of signal lines HREQ, HANS, HCLK, and HDATA for performing communication of the second data communication system D2b are connected to the second adapter communication unit 313 and the second via the terminals Tb8 to Tb11 and the terminals Ta8 to Ta11. The camera communication unit 113 is connected.

On the other hand, the second adapter communication unit 313 and the second lens communication unit 213 execute communication of the second data communication system D2L via two types of signal lines, signals HLP1 and HLP2. The terminal Tc7 is connected to the second adapter communication unit 313 via the signal line of the signal HLP1. The terminal Tc8 is connected to the second adapter communication unit 313 via a signal line for the signal HLP2. The terminal Tc7 is connected to the terminal Td7 of the interchangeable lens 200, and the terminal Tc8 is connected to the terminal Td8.
That is, the two types of signal lines HLP1 and HLP2 for performing communication of the second data communication system D2L are connected to the second adapter communication unit 313 and the second lens communication unit 213 via the terminals Tc7 to Tc8 and the terminals Td7 to Td8. Connected between.

  As described above, the communication of the second data communication system D2b and the communication of the second data communication system D2L are performed between the second camera communication unit 113 and the second lens communication unit 213 via the second adapter communication unit 313. Is called. In the communication of the second data communication system D2b and the communication of the second data communication system D2L, the second lens communication unit 213 is connected via the second adapter communication unit 313 based on the communication request signal of the second camera communication unit 113. For example, data indicating the position of the focus lens 222 is communicated. Here, the communication in the second data communication system D2b and the second data communication system D2L is referred to as “hot line communication”.

(Details of the adapter power supply and power system configuration)
Next, details of the configuration of the adapter power supply unit 320 and the power supply system in the adapter 300 will be described with reference to FIG.
FIG. 4 is a schematic block diagram showing an example of the configuration of the adapter power supply unit 320 and the power supply system. In the figure, the same reference numerals are given to portions corresponding to the respective portions in FIG. Further, the adapter control unit 310 shown in this figure shows only the configuration related to the adapter power supply control unit 311.

  The adapter power supply unit 320 includes a DC-DC converter unit 321 (voltage conversion unit), a first regulator unit 322, a second regulator unit 323, a Vc voltage detection unit 325 (voltage detection unit of the fourth power supply system), A Vp voltage detection unit 326 (voltage detection unit of the third power supply system), a PWR voltage detection unit 327 (voltage detection unit of the second power supply system), a fuse F1, and a fuse F2 are provided.

  The DC-DC converter unit 321 is connected to the power supply line of the power system power supply PWR and is supplied with the voltage of the power system power supply PWR. The DC-DC converter unit 321 generates a diaphragm drive power source Vm converted into a voltage that is stepped up or down from a voltage of the power system power source PWR to a predetermined voltage. The power line of the diaphragm driving power source Vm generated by the DC-DC converter section 321 is connected to the diaphragm interlocking lever driving section 330 and the input terminal of the first regulator section 322 via the fuse F1, and the diaphragm driving power is supplied. The voltage of the power source Vm is supplied.

  The first regulator unit 322 includes, for example, a first linear regulator, and generates a lens control system power supply Vc in which the voltage of the diaphragm driving power supply Vm is stepped down to stabilize the voltage. The power supply line of the lens control system power supply Vc is connected to the terminal Tc3 described with reference to FIG.

  Further, the power line of the power system power supply PWR is connected to the input terminal of the second regulator unit 323, and the voltage of the power system power supply PWR is supplied. The second regulator unit 323 includes, for example, a second linear regulator, and generates a lens driving system power supply Vp in which the voltage of the power system power supply PWR is stepped down to stabilize the voltage. The second regulator unit 323 is a regulator having a large amount of power supply that can be supplied as compared with the first regulator unit 322. The power line of the lens driving system power supply Vp is connected to the terminal Tc2 described with reference to FIG. 3 via the fuse F2.

The connection position of the fuse is not limited to the connection position of the fuse F1 and the fuse F2 shown in this figure. For example, a fuse connected in series to the power line of the diaphragm driving power source Vm is branched into a power line connected to the diaphragm interlocking lever driving unit 330 and a power line connected to the first regulator unit 322. It is good also as a structure connected in series with the subsequent power wire. The fuse may be configured to be connected in series to the power line of the lens control power supply Vc. Further, the fuse F2 connected in series to the power line of the lens driving system power supply Vp is on the second regulator section 323 side with respect to the connection point between the power line of the lens driving system power supply Vp and the Vp voltage detection section 326. Although connected in series, it is good also as a structure connected in series by the terminal Tc2 side with respect to this connection point. Similarly, when the fuse is connected in series to the power supply line of the lens control system power supply Vc, the first regulator is connected to the connection point between the power supply line of the lens control system power supply Vc and the Vc voltage detection unit 325. It is good also as a structure connected in series in any side among the part 322 side and the terminal Tc3 side.
These fuses protect the electric circuit by interrupting the current when a large current exceeding the unintended rating flows through each power line.

The signal line of the control signal CTL1 includes a control signal output terminal of the adapter control unit 310, a DC-DC converter unit 321 (for example, a control terminal for output control included in the DC-DC converter unit 321), It is connected to the. Based on the control signal CTL1 supplied from the adapter control unit 310, the DC-DC converter unit 321 changes the supply state of the voltage of the diaphragm drive power source Vm to a power supply state (a state in which voltage is supplied) or a cutoff state. (The supply of voltage is stopped). For example, when the control signal CTL1 is in the H (high) state, the DC-DC converter unit 321 controls the voltage of the diaphragm driving power source Vm to the power supply state. Further, the DC-DC converter unit 321 controls the voltage of the diaphragm driving power source Vm to be cut off when the control signal CTL1 is in the L (low) state.
In the first regulator unit 322, the voltage of the lens control system power source Vc is in a power supply state in response to the supply of the voltage of the aperture driving power source Vm, and the supply of the voltage of the aperture driving power source Vm is stopped. In response to this, the voltage of the lens control system power supply Vc is cut off. That is, the voltage supply state of the lens control system power supply Vc generated in the first regulator unit 322 is controlled based on the control signal CTL1 in the same manner as the voltage supply state of the aperture driving power supply Vm.

  The signal line of the control signal CTL2 is connected to the control signal output terminal of the adapter control unit 310 and the second regulator unit 323 (for example, the output control control terminal included in the second regulator unit 323). Has been. Based on the control signal CTL2 supplied from the adapter control unit 310, the second regulator unit 323 sets the voltage supply state of the lens driving system power supply Vp to a power supply state (a state in which voltage is supplied) or a cutoff state ( Control that voltage supply is stopped). For example, when the control signal CTL2 is in the H (high) state, the second regulator unit 323 controls the voltage of the lens driving system power supply Vp to the power supply state. Further, the second regulator unit 323 controls the voltage of the lens driving system power supply Vp to be cut off when the control signal CTL2 is in the L (low) state.

The voltage detection terminal of the Vc voltage detection unit 325 is connected to the power supply line of the lens control system power supply Vc. Accordingly, the Vc voltage detection unit 325 detects the voltage of the lens control system power supply Vc and supplies the detection signal Vc_sen to the adapter control unit 310. For example, the signal line of the detection signal Vc_sen supplied from the Vc voltage detection unit 325 to the adapter control unit 310 is connected to an A / D conversion (analog / digital conversion) input terminal of the adapter control unit 310.
The voltage detection terminal of the Vp voltage detection unit 326 is connected to the power supply line of the lens driving system power supply Vp. Thus, the Vp voltage detection unit 326 detects the voltage of the lens driving system power supply Vp and supplies the detection signal Vp_sen to the adapter control unit 310. For example, the signal line of the detection signal Vp_sen supplied from the Vp voltage detection unit 326 to the adapter control unit 310 is connected to the A / D conversion input terminal of the adapter control unit 310.
The voltage detection terminal of the PWR voltage detection unit 327 is connected to the power supply line of the power system power supply PWR. Accordingly, the PWR voltage detection unit 327 detects the voltage of the power system power supply PWR and supplies the detection signal PWR_sen to the adapter control unit 310. For example, the signal line of the detection signal PWR_sen supplied from the PWR voltage detection unit 327 to the adapter control unit 310 is connected to the A / D conversion input terminal of the adapter control unit 310.

The aperture interlocking lever driving unit 330 includes a stepping motor 335 as an aperture driving actuator, a motor driving unit 331, and an aperture interlocking lever position detection unit 332.
The stepping motor 335 is a power source that drives the aperture interlocking lever 350 and is driven by the motor drive unit 331.
The motor driving unit 331 generates a pulse voltage and drives the stepping motor 335 under the control of the adapter control unit 310. The aperture interlocking lever position detection unit 332 includes a photo interrupter, for example, and detects the position of the aperture interlocking lever 350.

The power line of the diaphragm driving power source Vm generated by the DC-DC converter unit 321 is connected to the motor driving unit 331 and the diaphragm interlocking lever position detecting unit 332, and the voltage of the diaphragm driving power source Vm is supplied. The
The power supply line of the control system power supply Vcc1 is connected to the adapter control unit 310 and the motor drive unit 331, and the voltage of the control system power supply Vcc1 is supplied.

The control system ground SGND is connected to the adapter control unit 310, the motor drive unit 331, the first regulator unit 322, and the Vc voltage detection unit 325 as a ground corresponding to the control system power supply Vcc1.
In addition, the power system ground PGND is connected to the DC-DC converter unit 321, the second regulator unit 323, the Vp voltage detection unit 326, the PWR voltage detection unit 327, the motor drive unit 331, and the aperture interlocking lever position detection unit 332. It is connected as a ground corresponding to the power supply PWR.

  As described above, the adapter 300 uses the lens driving system power supply Vp supplied to the interchangeable lens 200 from the voltage of the power system power supply PWR among the voltage of the control system power supply Vcc1 and the voltage of the power system power supply PWR supplied from the camera body 100. The voltage and the voltage of the lens control system power supply Vc are generated. That is, the adapter control unit 310 is supplied with the voltage of the control system power supply Vcc1 from the camera body 100, and the lens control unit 210 of the interchangeable lens 200 is supplied with the lens control system power supply Vc generated from the power system power supply PWR in the adapter 300. Is supplied. The lens driving system power supply Vp generated from the power system power supply PWR in the adapter 300 is supplied to the optical system driving unit 230 of the interchangeable lens 200.

  Thereby, the adapter 300 can generate and supply a voltage for driving the interchangeable lens 200 from the power system power supply PWR supplied from the camera body 100. For example, even if the power supply amount of the control system power supply Vcc1 supplied from the camera body 100 is insufficient compared to the power supply amount supplied to both the adapter control unit 310 and the lens control unit 210, the adapter 300 Power can be supplied to both the adapter controller 310 and the lens controller 210 without a shortage of power supply, and power can be supplied to the optical system driver 230. Therefore, by connecting the camera body 100 and the interchangeable lens 200 via the adapter 300, the interchangeable lens 200 can be driven and functioned by the camera body 100.

  The adapter 300 supplies the voltage of the lens driving system power supply Vp to a load that consumes more power than the power consumption of the load to which the voltage of the lens control system power supply Vc is supplied. That is, the adapter 300 generates the lens control system power supply Vc as a power supply system that supplies a voltage to the lens control unit 210, and optically supplies the lens drive system power supply Vp that can be supplied in comparison with the lens control system power supply Vc. It is generated as a power supply system that supplies a voltage to the system drive unit 230. Thereby, the adapter 300 can appropriately supply a voltage to the lens control unit 210 and the optical system driving unit 230. Therefore, the adapter 300 can appropriately supply a voltage for driving the interchangeable lens 200.

  In addition, the adapter 300 is stabilized by the DC-DC converter unit 321 because the voltage of the power system power supply PWR is converted from the voltage of the power system power supply PWR to a predetermined voltage to generate the voltage of the diaphragm drive power supply Vm. The supplied voltage can be supplied to the diaphragm interlocking lever driving unit 330. Further, the adapter 300 generates a lens control system power source Vc in which the voltage of the diaphragm driving power source Vm is stepped down to a predetermined voltage by the first regulator unit 322 to stabilize the voltage. A voltage with reduced influence of noise can be supplied to the lens controller 210. The adapter 300 converts the voltage of the power system power supply PWR from the voltage of the power system power supply PWR to a predetermined voltage by the second regulator unit 323 to generate the voltage of the lens drive system power supply Vp. Can be supplied to the optical system driving unit 230.

<Other forms of interchangeable lens>
Next, other forms of the interchangeable lens will be described.
A lens that can be connected to the camera body 100 via the adapter 300 to function is not limited to the interchangeable lens 200 described with reference to FIG. In addition to the interchangeable lens 200, various interchangeable lenses can be connected to the camera body 100 via the adapter 300 to function.
The interchangeable lens 200 described with reference to FIG. 3 includes a communicable lens control unit 210, and the lens control unit 210 controls the optical system driving unit 230 based on a communication result. The interchangeable lens 200 is also referred to as a CPU (Central Processing Unit) lens in the following description.

(Non-CPU lens)
On the other hand, as shown in FIG. 5, an interchangeable lens 200 </ b> B that does not include a communicable lens control unit can be connected to the camera body 100 via the adapter 300 to function.
FIG. 5 is a schematic block diagram illustrating an example of a configuration of a camera system 1B including an interchangeable lens 200B that does not include a communicable lens control unit. In the figure, the same reference numerals are given to portions corresponding to the respective portions in FIG.
In this figure, the camera body 100 and the interchangeable lens 200B are mounted via an adapter 300.

For example, the interchangeable lens 200B is a lens having a specification that does not electrically drive the optical system, and includes a focus ring 260B that can adjust the position of the focus lens 222B by a user operation, and an opening degree of the aperture mechanism 251B by a user operation. It is a lens provided with the aperture ring 255B which can change. Further, the interchangeable lens 200B illustrated in FIG. 5 is different from the interchangeable lens 200 illustrated in FIG. 3 in that it does not include a lens control unit, an optical system driving unit, and an electrical connection terminal.
In the interchangeable lens 200B, the aperture diameter (opening, aperture value) of the aperture mechanism 251B is changed by operating the aperture ring 255B by the user. Therefore, the adapter control unit 310 does not interfere with the position of the aperture lever 252B whose position moves in response to the change in aperture diameter (opening, aperture value) of the aperture mechanism 251B (a position that does not hinder movement). The diaphragm interlocking lever 350 is controlled to the retracted position.
Thereby, the interchangeable lens 200B can be connected to the camera body 100 via the adapter 300, and can be made to function by manual operation according to the specifications of the interchangeable lens 200B.
This interchangeable lens 200B is also referred to as a non-CPU lens in the following description.

(Electromagnetic aperture CPU lens)
In addition, as shown in FIG. 6, an electromagnetic diaphragm type interchangeable lens 200 </ b> C that electrically drives the diaphragm mechanism 251 </ b> C can be connected to the camera body 100 via an adapter 300 to function.
FIG. 6 is a schematic block diagram illustrating an example of a configuration of a camera system 1C including the electromagnetic diaphragm type interchangeable lens 200C. In the figure, the same reference numerals are given to portions corresponding to the respective portions in FIG.
In this figure, the camera body 100 and the interchangeable lens 200C are attached via an adapter 300.
An interchangeable lens 200C shown in FIG. 6 differs in that the interchangeable lens 200 shown in FIG. 3 includes an aperture unit 250 having an aperture lever 252 and an electromagnetic aperture unit 250C having an aperture drive unit 233C. .

For example, the interchangeable lens 200C is a lens including an electromagnetic diaphragm unit 250C (EMD (Electro-magnetic Diaphragm). The electromagnetic diaphragm unit 250C includes a diaphragm mechanism 251C and a diaphragm driving unit 233C.
The aperture drive unit 233C electrically drives the aperture diameter (aperture size, size, aperture, aperture value) of the aperture of the aperture mechanism 251C under the control of the optical system control unit 211C included in the lens control unit 210C. To change. The aperture driving unit 233C includes, for example, an aperture driving actuator.
When the adapter 300 controls the diaphragm mechanism 251C in the configuration shown in this figure, the adapter controller 310 drives the diaphragm by communicating with the lens controller 210C instead of controlling the diaphragm interlocking lever driver 330. The diaphragm mechanism 251C is controlled via the part 233C.
As a result, the interchangeable lens 200C can be connected to the camera body 100 via the adapter 300, and the camera control unit 110 communicates with the lens control unit 210C via the adapter control unit 310. 200C can function.
This interchangeable lens 200C is also referred to as an electromagnetic diaphragm type CPU lens in the following description.

(Standard-compliant lens)
FIG. 7 is a schematic block diagram showing an example of the configuration of the camera system 1A when the lens side mount 201A of the interchangeable lens 200A and the camera body side mount 101 of the camera body 100 are lens mounts having the same specifications. is there.
That is, the interchangeable lens 200 </ b> A is a lens that conforms to the lens mount specification and communication standard of the camera body 100 and can be directly connected to the camera body 100 and functioned without using the adapter 300.
In the figure, parts corresponding to those in FIG. 3 or FIG.

Each part of the optical system 220A and the optical system driving unit 230A in FIG. 7 has the same configuration as each part of the optical system 220 and the optical system driving unit 230 in FIG. 3 or FIG. Each part of the diaphragm unit 250A has the same configuration as the electromagnetic diaphragm unit 250C of FIG.
The specification of the lens side mount 201A of the interchangeable lens 200A is a specification that can be attached to the camera body side mount 101 of the camera body 100.
The connection part 201As of the lens side mount 201A includes twelve connection terminals Te1 to Te12 as connection terminals connected to the connection terminals of the connection part 101s included in the camera body 100. When the interchangeable lens 200A and the camera body 100 are connected via the connection portion 201As and the connection portion 101s, the terminals Te1 to Te12 of the connection portion 201As are connected to the terminals Ta1 to Ta12 of the connection portion 101s, respectively. It is connected to the corresponding connection terminal among the connection terminals. The connecting portion 201As and the connecting portion 101s are electrically connected.

The terminal Te2 is connected to the terminal Ta2 of the camera body 100, and the voltage of the power system power supply PWR is supplied from the camera body 100. The voltage of the power system power supply PWR supplied to the terminal Te2 is the voltage of the lens drive system power supply supplied to the optical system drive unit 230A of the interchangeable lens 200A (the voltage of the lens drive system power supply Vp supplied to the interchangeable lens 200). Equivalent voltage).
The terminal Te3 is connected to the terminal Ta3 of the camera body 100, and the voltage of the control system power supply Vcc is supplied from the camera body 100. The voltage of the control system power supply Vcc supplied to the terminal Te3 corresponds to the voltage of the lens control system power supply supplied to the lens control unit 210A of the interchangeable lens 200A (the voltage of the lens control system power supply Vc supplied to the interchangeable lens 200). Voltage).

The lens control unit 210A includes an optical system control unit 211A, a first lens communication unit 212A, and a second lens communication unit 213A. The optical system control unit 211A controls the optical system drive unit 230A and the aperture drive unit 233A of the aperture unit 250A.
The first lens communication unit 212A and the first camera communication unit 112 perform communication of the first data communication system D1b via four types of signal lines of signals RDY, CLK1, DATAB, and DATAL. In addition, the second lens communication unit 213A and the second camera communication unit 113 perform communication of the second data communication system D2b via four types of signal lines of signals HREQ, HANS, HCLK, and HDATA.

Thus, the interchangeable lens 200A is supplied with the voltage of the power system power supply PWR from the camera body 100 as the voltage of the lens drive system power supply and the voltage of the control system power supply Vcc as the voltage of the lens control system power supply. The first lens communication unit 212A and the first camera communication unit 112 have the same communication standard and perform command data communication. The second lens communication unit 213A and the second camera communication unit 113 have the same communication standard and perform hotline communication.
Accordingly, the interchangeable lens 200A can be directly connected to the camera body 100 without using the adapter 300, and the camera control unit 110 causes the interchangeable lens 200A to function by communicating with the lens control unit 210A. be able to.
This interchangeable lens 200A is also referred to as a standard-compliant lens in the following description.

<Description of state transition>
Next, processing according to the present embodiment will be described.
First, the outline of the state transition according to the present embodiment will be described with reference to FIG.
FIG. 8 is a flowchart showing an overview of the state transition of the process related to the interchangeable lens according to the present embodiment.

First, when the main power of the camera body 100 is turned on with respect to the camera body 100, or when the adapter 300 is attached in a state where the main power of the camera body 100 is turned on, the adapter 300 is Under the control of the body 100, a “lens activation process” is executed (step S100).
Here, the “lens activation process” includes, for example, an attachment / detachment determination process of the camera body 100 with respect to the camera body side mount 101, an initialization process of the adapter 300 and the interchangeable lens 200 attached to the adapter 300, and power supply of each power supply system. Control processing, etc. Further, for example, in this lens activation process, the camera body 100 acquires information on the type and specification (function) of the interchangeable lens 200 attached to the camera body 100 via the adapter 300. This lens activation process will be described in detail in “Lens Activation Process” (FIG. 12) described later.

When the lens activation process is completed in step S100, the adapter 300 transitions to a “lens steady process” under the control of the camera body 100 (step S200).
The “lens steady process” is, for example, a state in which a photographing process after the lens activation process is completed is possible. In this lens steady process, the camera body 100 executes “steady communication” in which, for example, detection of the mounting state of the interchangeable lens 200 mounted via the adapter 300 and acquisition of information on the optical system are performed in a predetermined cycle. . This lens steady process will be described later with reference to FIGS.

Next, the camera body 100 or the adapter 300 determines whether or not an interrupt request is generated during the lens steady process (step S300). If it is determined in step S300 that there is no interrupt request, the adapter 300 continues the lens steady process under the control of the camera body 100. On the other hand, when it is determined in step S300 that there is an interrupt request, the camera body 100 or the adapter 300 transitions to the requested interrupt process (step S400). Here, the interrupt process is, for example, a shooting start process by a release operation, a process at the time of instantaneous power interruption, a shift to a low power consumption mode, or a power cut-off process by turning off the power. These processes will also be described later.
It should be noted that the process state transition when the standard-compliant lens (for example, the interchangeable lens 200A) is directly attached instead of the adapter 300 being attached to the camera body 100 is the same state transition as in FIG. .

(Explanation of command data communication in regular lens processing)
Next, command data communication executed in the lens steady process (step S200 in FIG. 8) will be described.
FIG. 9 is a diagram illustrating an example of a communication sequence of command data communication in the lens steady process.
This figure shows an example of command data communication taking the camera system 1 in which the interchangeable lens 200 (CPU lens) and the camera body 100 are connected via an adapter 300 as an example. The adapter control unit 310 can periodically perform periodic communication with the camera control unit 110, and by executing this periodic communication, lens control is performed in response to a request from the camera control unit 110. The lens information (such as information on the optical system 220) acquired from the unit 210 is transmitted to the camera control unit 110.

For example, in the “lens steady process” shown in FIG. 9, the first adapter communication unit 312 communicates with the lens control unit 210 included in the interchangeable lens 200 at a cycle Tf (first communication cycle). And the second periodic communication that communicates with the camera control unit 110 included in the camera body 100 at a cycle Tm (second communication cycle) in an asynchronous relationship.
The first adapter communication unit 312 performs communication (first periodic communication) of the first data communication system D1L with the first lens communication unit 212 at a cycle Tf (for example, every 64 msec) (steps S2010 and S2020). .
Here, the communication (first regular communication) of the first data communication system D1L in the lens steady process is referred to as “lens steady communication”. Through this lens steady communication, the first adapter communication unit 312 acquires lens information (information of the optical system 220 (first information)) from the first lens communication unit 212.

The first adapter communication unit 312 generates lens information (information of the optical system 220 (second information)) to be transmitted to the first camera communication unit 112 based on the lens information acquired in step S2010 (step 2). S2015). For example, the first adapter communication unit 312 converts the lens information (such as information on the optical system 220) acquired in step S2010 into data that conforms to the communication standard of the first data communication system D1b, and performs first conversion. Information to be transmitted to the camera communication unit 112 is generated.
Similarly, the first adapter communication unit 312 generates and converts the information to be transmitted to the first camera communication unit 112 based on the lens information (such as information on the optical system 220) acquired in step S2020 (step S2025). ).
That is, the first adapter communication unit 312 generates lens information (information of the optical system 220 and the like) to be transmitted to the first camera communication unit 112 according to the communication timing of the lens steady communication (communication timing of the cycle Tf).

The first adapter communication unit 312 is asynchronous with the communication (first regular communication) cycle Tf with the interchangeable lens 200 in the first data communication system D1L with respect to the communication of the first data communication system D1L described above. The communication (second periodic communication) of the first data communication system D1b is executed with the first camera communication unit 112 at a period Tm (for example, every 16 msec) (steps S1010, S1015, S1020, S1025). This communication cycle Tm is a communication cycle faster than the communication cycle Tf.
Here, communication (second regular communication) of the first data communication system D1b in the lens steady process is referred to as “steady communication”. This steady communication includes a lens attachment / detachment detection process (lens attachment / detachment detection) and a steady data communication process (hereinafter, “steady data communication”).
The lens attachment / detachment detection process in each step is a process in which the first adapter communication unit 312 responds a detection result in response to a lens attachment / detachment detection instruction command from the first camera communication unit 112. The first adapter communication unit 312 detects the attachment / detachment of the interchangeable lens 200 based on whether there is a response to the steady lens communication from the first lens communication unit 212 and transmits the detection result to the first camera communication unit 112. .

The steady data communication in each step is a communication process in which the first camera communication unit 112 acquires lens information (such as information on the optical system 220) generated by the first adapter communication unit 312. That is, in steady data communication, the first camera communication unit 112 transmits a request command for requesting transmission of lens information (information of the optical system 220, etc.) to the first adapter communication unit 312 and receives it. Based on a response from the first adapter communication unit 312 (transmission from the adapter to the camera side), the lens information (information of the optical system 220, etc.) from the interchangeable lens 200 via the adapter 300 is received (acquired). Since this request command is periodically transmitted in the steady data communication, the first camera communication unit 112 repeatedly performs the lens information acquisition (reception) operation every time the steady data communication is performed.
For example, the first camera communication unit 112 obtains the lens information (information of the optical system 220 / first information) acquired by the first adapter communication unit 312 before the lens steady communication in step S2010 by the steady data communication in step S1010. The lens information (second information) generated based on the above is acquired. In addition, the first camera communication unit 112 obtains lens information (information of the optical system 220 / first information) acquired by the first adapter communication unit 312 in the lens steady communication in step S2010 through the steady data communication in steps S1015 and S1020. The lens information (second information) generated based on the above is acquired. In addition, the first camera communication unit 112 generates a lens based on the lens information (such as information on the optical system 220) acquired by the first adapter communication unit 312 in the lens steady communication in step S2020 through the steady data communication in step S1025. Get information.
That is, the first adapter communication unit 312 transmits (responds) the lens information generated as described above to the first camera communication unit 112 at the period Tm of steady data communication.

As described above, in the command data communication, the adapter control unit 310 uses the camera control unit based on the lens information (information of the optical system 220 / first information) from the interchangeable lens 200 acquired by the lens steady communication with the period Tf. Lens information (second information) to be transmitted to 110 is generated. In addition, the adapter control unit 310 transmits the generated lens information (second information) to the camera control unit 110 by steady data communication with a period Tm.
As a result, the adapter control unit 310 ensures that the lens information acquired by the lens steady communication with the cycle Tf is generated without delay in the camera control unit 110 through the steady data communication with the cycle Tm that is asynchronous with the cycle Tf. Can be sent to.
Therefore, the adapter control unit 310 can transmit the lens information acquired from the lens control unit 210 to the camera control unit 110 without delay in response to a request from the camera control unit 110 by communicating with the camera control unit 110. it can.

9, lens information (such as information on the optical system 220) to be transmitted to the first camera communication unit 112 in accordance with the communication timing of the lens steady communication (communication timing of the cycle Tf) is used as the first adapter communication. Although the process which the part 312 produces | generates was demonstrated, it is not restricted to this. For example, the first adapter communication unit 312 generates lens information (such as information on the optical system 220) to be transmitted to the first camera communication unit 112 according to the communication timing of regular data communication (communication timing of the cycle Tm). Also good.
As a result, the adapter control unit 310 determines the camera control unit according to the timing of the cycle Tm that is asynchronous with respect to the cycle Tf from the lens information (information of the optical system 220, etc.) acquired by the lens steady communication with the cycle Tf. The lens information to be transmitted to 110 can be generated, and the generated lens information can be transmitted to the camera control unit 110 by steady data communication.

  In addition, with reference to FIG. 9, the first adapter communication unit 312 has described a process in which the cycle Tf of communication with the lens control unit 210 and the cycle Tm of communication with the camera control unit 110 are in an asynchronous relationship. However, the cycle Tf and the cycle Tm may be synchronized.

(Explanation of regular lens communication)
Specifically, the “lens steady communication” communicated at the cycle Tf is, for example, a time required for a plurality of communications (for example, 8 communications / one communications) within about 8 ms within one period (eg, 64 ms period). ) To communicate. In this multiple communication, the first adapter communication unit 312 outputs information (setting instruction) from the first adapter communication unit 312 to the lens control unit 210 and communication for acquiring information from the lens control unit 210. Communication.
The first adapter communication unit 312 performs a plurality of times of communication with the first lens communication unit 212 in the steady lens communication, and the lens information (information on the optical system 220 and the aperture unit) from the first lens communication unit 212 each time. 250 information etc./first information). In addition, the first adapter communication unit 312 uses a plurality of lens information acquired at different times among the lens information acquired by a plurality of times of communication, and transmits the lens to the first camera communication unit 112 by steady data communication. Generate information. The first adapter communication unit 312 transmits the generated lens information (second information) to the first camera communication unit 112 in response to a request from the first camera communication unit 112.
FIG. 10 is a diagram illustrating an example of a communication command that is divided into a plurality of times of communication within one period of the regular lens communication.
As shown in this figure, the lens steady communication has, for example, communication commands D1 to D8 for transmitting and receiving communication data, and is sequentially communicated during one period of the lens steady communication. In the example shown in this figure, communication is performed eight times by sequentially communicating the communication commands D1 to D8 of the lens steady communication within a period of one cycle.

The communication commands D1 to D8 for transmitting or receiving communication data in the regular lens communication include a command for the adapter 300 to acquire lens information regarding the interchangeable lens 200 from the interchangeable lens 200 side, and an interchangeable lens 200 from the adapter 300 side. There is a command for sending information and instructions (setting instructions) to the side. Examples of commands for acquiring information related to the interchangeable lens 200 include communication commands D1, D4, and D5 for communicating information on the optical system 220 and information indicating a driving state, and a communication command D6 for acquiring information related to an electromagnetic diaphragm. Further, as a command for sending information or an instruction (setting instruction) to the interchangeable lens 200 side, information indicating the operation state of the camera body 100 (for example, information indicating whether or not a half-press operation has been performed on the release button) is communicated. Communication command D2 for communication, communication command D3 for communicating setting information (setting instruction) for hotline communication, and communication commands D7 and D8 for communicating instructions (setting instruction) for image stabilization control (control of VR lens 223). The functions of the interchangeable lens differ depending on the specifications of the interchangeable lens (the interchangeable lens 200 or other interchangeable lenses). A communication command selected from D8 is communicated.
For example, unnecessary communication commands are not communicated depending on the specifications (functions) of the interchangeable lens, such as the presence or absence of the VR lens 223 (presence or absence of an anti-vibration function) or the presence or absence of an electromagnetic diaphragm function.

That is, the first adapter communication unit 312 acquires the information of the optical system 220 by dividing the information of the optical system 220 into a plurality of pieces of information by a plurality of times of communication, and collects the information corresponding to the plurality of pieces of information acquired by the division. Information on the optical system 220 is generated.
Note that the information corresponding to a plurality of pieces of information is information obtained by data conversion of the plurality of pieces of information according to a communication standard or the like.
The first adapter communication unit 312 includes eight types of communication commands D1 to D8 within one cycle of the regular lens communication (as described above, four types of communication commands D2, D3, D7, and D8 are transmitted to the interchangeable lens 200 side. Are commands for communicating information and instructions, and the remaining four types of communication commands D1, D4, D5, and D6 are sequentially communicated information for obtaining information from the interchangeable lens 200) Information on the aperture unit 250 and other various lens information are acquired (received) by dividing them into four types of information (divided into four times), and at the same time, four types of information and instructions are divided into the interchangeable lens 200. To send.
In addition, the first adapter communication unit 312 generates information of the optical system 220 to be transmitted to the first camera communication unit 112 based on information acquired by dividing every four communications within one cycle. Here, the information of the lens (for example, the optical system 220) generated by the first adapter communication unit 312 within one cycle (in other words, the information transmitted to the first camera communication unit 112) Instead of being generated and transmitted to the camera body 100 at each reception, based on all pieces of information divided and received within one cycle (all lens information divided and received in four steps in this embodiment). The lens information to be transmitted is generated, and the generated lens information is transmitted to the camera body 100. That is, the lens information transmitted to the camera body 100 is not only the pieces of information acquired in a divided manner, but all the received four types (four times) of information (one for the transmission to the camera body 100). (In other words, the adapter 300 does not transmit the lens information received from the interchangeable lens 200 in four times to the camera body 100 in four times, but transmits it to the camera body 100 in one time. 100). With this configuration, the communication frequency between the adapter 300 and the camera body 100 can be suppressed, and the processing burden on both control units (the adapter control unit 310 and the camera control unit 110) can be reduced.

The first adapter communication unit 312 is based on lens information (for example, information on the optical system 220) acquired by “lens steady communication” (see FIG. 9) based on a predetermined format. ”(See FIG. 9), lens information (information of the optical system 220) to be transmitted to the first camera communication unit 112 is generated.
Here, the predetermined format is a format determined in advance by the communication standard of command data communication in the first data communication system D1b between the first adapter communication unit 312 and the first camera communication unit 112. Thus, the format of the data structure for transmitting information of the optical system 220 is defined. For example, as the information of the optical system 220, data configuration rules such as information indicating the type of the optical system 220, information indicating the driving state of the focus lens 222, and information indicating the driving state of the VR lens 223 are defined.

As described above, the first adapter communication unit 312 divides the lens information (information of the optical system 220) obtained by dividing into a plurality of pieces of information by a plurality of communications in the “lens steady communication” based on a predetermined format. The information is converted into information (collected as one) and transmitted by one communication in “steady data communication”. That is, the first adapter communication unit 312 converts communication data transmitted / received in the “lens steady communication” communication format into communication data transmitted / received in the “steady data communication” communication format.
Therefore, the adapter 300 can acquire information of the optical system 220 of the interchangeable lens 200 and transmit it to the camera body 100 by being mounted between the camera body 100 and the interchangeable lens 200 having different communication standards. .
In the above-described embodiment, an example in which all pieces of lens information acquired in a plurality of times are collectively transmitted to the camera body 100 has been described. However, all of the lens information may not necessarily be used. For example, some (for example, two times or three times) received from a plurality of times (four times in the above) may be selected, and the selected information may be transmitted together.
In addition, the adapter 300 transmits the lens information acquired from the lens 200 in accordance with a request command from the camera body 100 (analyzing the request command), in addition to matching the communication format of “steady data communication”. Since it is configured to transmit in combination with the content to be transmitted (so as to meet the request from the camera body 100), various request commands from the camera body 100 can be handled.

(Communication processing for detecting the drive state of the drive element (or optical system drive unit) of the interchangeable lens)
Next, the communication process of the drive state of the drive element (the optical system 220 and the aperture unit 250) of the interchangeable lens 200 or the optical system drive unit 230 will be described.
The adapter control unit 310 receives a control command output from the camera control unit 110 (for example, received by the first receiving unit of the first adapter communication unit 312), and the content of the received control command (first receiving unit). As a control command corresponding to the received content of the lens, a lens control command for controlling the driving of the optical system driving unit 230 (in other words, driving elements such as the optical system 220 and the aperture unit 250 in the interchangeable lens 200) is provided. And transmitted to the lens control unit 210 (for example, the first transmission unit of the first adapter communication unit 312 transmits). In addition, after transmitting the lens control command, the adapter control unit 310 receives state information indicating the driving state of the optical system driving unit 230 from the lens control unit 210 (for example, the second reception of the first adapter communication unit 312). And the state information indicating the driving state of the driving element is transmitted to the camera control unit 110 based on the received content (the content received by the second receiving unit) (for example, the first adapter communication unit 312). The second transmission unit transmits).
That is, the adapter control unit 310 transmits a lens control command for the optical system driving unit 230 to the lens control unit 210 and then receives state information indicating the driving state of the optical system driving unit 230 from the lens control unit 210. The state information is transmitted to the camera control unit 110.
However, when the adapter control unit 310 transmits a lens control command (first lens control command) for instructing the driving start of the drive element to the lens control unit 210 (for example, transmitted from the first transmission unit). In this case, the state information indicating that the drive element is being driven is transmitted to the camera control unit 110 (transmitted from the second transmission unit) regardless of reception by the second reception unit.

  For example, when the lens control unit 210 receives a lens control command for starting driving from the adapter control unit 310, the lens control unit 210 drives the optical system driving unit 230 according to the instruction of the control command. In addition, the lens control unit 210 transmits state information indicating that the drive element in the interchangeable lens 200 is “driven” to the adapter control unit 310 in response to the start of driving of the optical system drive unit 230.

Here, the adapter control unit 310 waits to receive this state information from the lens by lens steady communication, and then transmits the received state information to the camera control unit 110 by steady data communication. It takes time to transmit the status information indicating that the optical system driving unit 230 is being driven to the camera control unit 110 with respect to the timing at which the driving of the optical system driving unit 230 is started (that is, during driving). The reception timing may be delayed).
This is because the steady lens communication and the steady data communication are asynchronous with each other, and the communication is performed at different periods. Further, the adapter control unit 310 needs data conversion processing to relay communication between the lens steady communication and the steady data communication, which are different communication standards.
As described above, the adapter control unit 310 has a time lag between the timing when the driving of the optical system driving unit 230 is started and the timing when the camera control unit 110 receives the state information indicating “driving”. Occurs. That is, in the camera control unit 110, there is a period in which the status information indicating “driving” cannot be received even though the optical system driving unit 230 is already being driven.

In order to reduce the above-described time lag, the adapter control unit 310 transmits a lens control command (first lens control command) for starting driving to the optical system driving unit 230 to the lens control unit 210 (for example, the first transmission unit). (Without immediately waiting for reception at the second receiving unit) without waiting for a response from the lens control unit 210 (a response of state information indicating the driving state of the driving element). Status information indicating that the camera is in the driving state (status information indicating that the camera is being driven) is transmitted to the camera control unit 110.
The adapter control unit 310 according to the present embodiment is configured to transmit the state information indicating “being driven” to the camera control unit 110 after transmitting the lens control command indicating the start of driving to the lens control unit 210. did. With regard to this order, for example, the operation sequence of the adapter control unit 310 is improved so that the above-described lens control command is transmitted to the lens control unit 210 and at the same time, the “driving” status information is transmitted to the camera control unit 110. Also good.
On the other hand, when the driving of the optical system driving unit 230 is stopped, the adapter control unit 310 obtains a response (state information) indicating that the optical system driving unit 230 is in a stopped state from the lens control unit 210. The state information indicating the “driving stop state” is transmitted to the camera control unit 110. That is, when stopping the optical system drive unit 230, the adapter control unit 310 confirms the actual stop state (after receiving a response indicating that from the lens control unit 210), and then the camera control unit. Response to 110 is made.

FIG. 11 is a diagram illustrating an example of a communication sequence for detecting the driving state of the optical system driving unit 230 (or the above-described driving element).
With reference to this figure, the process in which the adapter control part 310 communicates the drive state of the optical system drive part 230 (or the above-mentioned drive element) is demonstrated.
The first camera communication unit 112 performs steady data communication with the first adapter communication unit 312 at a cycle Tm (steps S1032, S1036, S1038, and S1040). The first adapter communication unit 312 performs lens steady communication with the first lens communication unit 212 at a cycle Tf (steps S2034 and S2038).

  First, when the camera control unit 110 controls the optical system drive unit 230 included in the interchangeable lens 200, the first camera communication unit 112 sends a lens control command for controlling the optical system drive unit 230 to the first adapter communication unit. It transmits to 312 (step S1030). For example, the first camera communication unit 112 transmits a lens control command (drive start command) for moving the position of the focus lens 222 to the target position.

  Next, the first adapter communication unit 312 converts the received lens control command (drive start command) into a lens control command (drive start command) transmitted to the first lens communication unit 212, and converts the converted lens control command. (Drive start command) is transmitted to the first lens communication unit 212 (step S2030). Further, the first adapter communication unit 312 sets the drive state to “driving” without detecting the drive state of the optical system drive unit 230 after transmitting the lens control command to the first lens communication unit 212 ( Step S2032). For example, the first adapter communication unit 312 sets the state information indicating the driving state of the focus lens 222 to “being driven” in response to a lens control command for moving the position of the focus lens 222 to the target position.

  The first adapter communication unit 312 responds to the first camera communication unit 112 with the state information set to “being driven” by steady data communication (step S1032). The first camera communication unit 112 detects that the state information is “driving” by the steady data communication in step S1032 (step S1035).

Also, the first lens communication unit 212 receives the lens control command transmitted from the first adapter communication unit 312 in step S2030. Based on the lens control command (drive start command), the optical system control unit 211 of the lens control unit 210 controls the optical system drive unit 230 to start driving (step S3030). For example, the optical system control unit 211 controls the optical system drive unit 230 to start driving the focus lens 222 in accordance with a lens control command for moving the position of the focus lens 222 to the target position.
In addition, the optical system control unit 211 controls the optical system driving unit 230 to start driving the focus lens 222, and the driving state of the focus lens 222 drives the state information included in the interchangeable lens 200. It is set to “Driving” indicating that it is in the middle (step S3032).

  Next, the first lens communication unit 212 responds to the “driving” state information set by the optical system control unit 211 in step S3032 through lens steady communication (step S2034). Then, the first adapter communication unit 312 acquires the “driving” state information responded by the lens steady communication (step S2036). Note that in step S2036, the first adapter communication unit 312 only acquires the “driving” status information, and does not transmit it to the first camera communication unit 112.

Subsequently, when the movement of the focus lens 222 to the target position is completed, the optical system control unit 211 controls the optical system drive unit 230 to stop driving the focus lens 222 (step S3034). Further, in response to stopping the driving, the optical system control unit 211 sets the state information included in the interchangeable lens 200 to “driving stop” indicating that the driving state of the focus lens 222 is the driving stop state. (Step S3036).
Next, the first lens communication unit 212 responds to the “drive stop” state information set by the optical system control unit 211 in step S3036 by lens steady communication (step S2038). Then, the first adapter communication unit 312 acquires the “drive stop” state information responded by the lens steady communication (step S2040).

  The first adapter communication unit 312 responds to the first camera communication unit 112 with the status information set to “stop driving” by steady data communication (step S1040). The first camera communication unit 112 detects that the state information is “driving stop” by the steady data communication in step S1040 (step S1045).

As described above, the first adapter communication unit 312 transmits the drive start control command to the optical system drive unit 230 to the first lens communication unit 212 and then waits for a response from the first lens communication unit 212 without driving. Status information indicating the status (status information indicating that the camera is being driven) is transmitted to the first camera communication unit 112.
In addition, when the driving of the optical system driving unit 230 is stopped, the first adapter communication unit 312 acquires the response indicating that the optical system driving unit 230 is in the stopped state from the first lens communication unit 212, and then drives. Status information indicating the status is transmitted to the first camera communication unit 112.
Thereby, the first adapter communication unit 312 is from the timing when the driving of the optical system driving unit 230 is started to the timing when the first camera communication unit 112 receives the state information indicating that the driving is in progress. Time lag can be reduced.
Therefore, in the first camera communication unit 112, it is possible to prevent a period during which the state information indicating that the optical system driving unit 230 is being driven cannot be received even though the optical system driving unit 230 is being driven. Further, when the driving of the optical system driving unit 230 is stopped, the first adapter communication unit 312 can transmit the state information to the first camera communication unit 112 after confirming that the driving is stopped.

(Lens activation process)
Next, the lens activation process (the process in step S100 in FIG. 8) will be described.
First, an outline of the lens activation process will be described.
When the supply of the voltage of the control system power supply Vcc1 is started from the camera body 100 (after power supply to the adapter control section 310 from the control system power supply Vcc1 is started), the adapter control unit 310 is the voltage of the power system power supply PWR. A power system power supply PWR request signal for requesting the start of supply is transmitted to the camera body 100. That is, after receiving the voltage of the control system power supply Vcc1 from the camera body 100, the adapter control unit 310 transmits to the camera body 100 a power system power supply PWR request signal for requesting the start of power supply from the power system power supply PWR. .
The adapter control unit 310 also controls the lens driving system power supply Vp that supplies a voltage to the interchangeable lens 200 from the voltage of the power system power supply PWR supplied from the camera body 100 in response to the power system power supply PWR request signal, and the lens control. The adapter power supply 320 generates the voltage of the system power supply Vc. Note that the adapter control unit 310 causes the adapter power supply unit 320 to generate the voltage of the lens drive system power supply Vp and the voltage of the lens control system power supply Vc after the power supply from the power system power supply PWR is started. Supply.

For example, the adapter control unit 310 causes the adapter power supply unit 320 to supply the interchangeable lens 200 with the voltage of the lens control system power supply Vc after the power supply from the power system power supply PWR is started (lens control system power supply). Power supply from Vc is started). Subsequently, the adapter control unit 310 supplies the voltage of the lens control system power supply Vc from the adapter power supply unit 320 to the interchangeable lens 200 and then supplies the voltage of the lens drive system power supply Vp to the interchangeable lens 200.
Specifically, the adapter control unit 310 requests the interchangeable lens 200 to start supplying the voltage of the lens drive system power supply Vp in response to the supply of the voltage of the lens control system power supply Vc to the interchangeable lens 200. When the lens drive system power supply Vp request signal shown is received, the voltage of the lens drive system power supply Vp is supplied from the adapter power supply unit 320 to the interchangeable lens 200.

Further, after the supply of the voltage of the control system power supply Vcc1 is started from the camera body 100, the adapter control unit 310 executes an initialization process according to a control instruction from the camera control unit 110. For example, the adapter control unit 310 executes a process for initializing the state of the interchangeable lens 200 as an initialization process (requested from the interchangeable lens 200). That is, the adapter control unit 310 performs processing for initializing the state of the interchangeable lens 200 after supplying power to the interchangeable lens 200 (supplying power to the interchangeable lens 200 from the lens system power supply system). (Required for the interchangeable lens 200).
The process for initializing the state of the interchangeable lens 200 includes a lens control unit initialization process for initializing the lens control unit 210.
For example, the adapter control unit 310 detects whether or not the interchangeable lens 200 is attached to the adapter 300 by supplying power to the interchangeable lens 200 as an initialization process. Then, after detecting that the interchangeable lens 200 is attached to the adapter 300, the adapter control unit 310 executes a lens control unit initialization process for initializing the lens control unit 210.

Next, details of the lens activation process of the camera system 1 will be described.
FIG. 12 is a diagram illustrating an example of a processing sequence of lens activation processing. This figure shows an example of lens activation processing when the main power supply of the camera body 100 is turned on.
The lens activation process includes attachment / detachment determination (step S110), information exchange between the camera body 100 and the adapter 300 (step S120), initialization (step S130), lens information acquisition (step S160), and lens function start (step S170). ) In this order. In the initialization (step S130), as the processing performed by the adapter 300 for the interchangeable lens 200, the attachment determination processing (step S140) and the lens initialization processing (step S150) are sequentially executed.
In this activation process, the communication executed by the camera body 100 with the interchangeable lens 200 via the adapter 300 is command data communication.

First, attachment / detachment determination (step S110) is processing for determining whether or not the adapter 300 (or the interchangeable lens 200A) is attached when the camera body 100 starts to supply power to the adapter 300 from the control system power supply Vcc1. .
When the main power supply of the camera body 100 is turned on, the camera control unit 110 controls the camera power supply unit 120 to supply (power feed) the voltage of the control system power supply Vcc1 to the adapter 300 (step S1110). As a result, the adapter control unit 310 is supplied with the voltage of the control system power supply Vcc1. The adapter control unit 310 performs an adapter activation process in response to the supply of the voltage of the control system power supply Vcc1, and notifies the first camera communication unit 112 from the first adapter communication unit 312 that communication is possible (step S2110). ). For example, the first adapter communication unit 312 controls the signal RDY to H (high) level in response to the supply of the voltage of the control system power supply Vcc1, and controls the signal RDY to L (low) level by adapter activation processing. To do. And the 1st camera communication part 112 acquires mounting information by detecting the falling edge of the signal level of signal RDY (step S1112).

  Accordingly, the camera control unit 110 determines whether or not the adapter 300 is attached based on the attachment information acquired by the first camera communication unit 112 (step S1114). For example, the camera control unit 110 performs attachment / detachment determination based on attachment information indicating whether or not a falling edge of the signal level of the signal RDY is detected.

If it is determined in step S1114 that the adapter 300 is attached to the camera body 100, the camera control unit 110 advances the processing to information exchange (step S120) between the camera body 100 and the adapter 300.
Even when a standard-compliant lens (for example, the interchangeable lens 200A) is directly attached to the camera body 100 without the adapter 300, the camera control unit 110 similarly proceeds to step S120. In this case, the processing in step S120 is information exchange processing between the camera body 100 and the interchangeable lens 200A.
If it is determined in step S1114 that the camera body 100 is not attached, the camera control unit 110 determines that either the adapter 300 or the interchangeable lens 200A is not attached to the camera body 100.

In the information exchange between the camera body 100 and the adapter 300 in step S120, the following processing is performed.
The first camera communication unit 112 establishes communication (command data communication) with the first adapter communication unit 312. And the 1st camera communication part 112 and the 1st adapter communication part 312 mutually communicate and acquire information, such as identification ID of the camera body 100 and the adapter 300, a name, and a firmware version. The first adapter communication unit 312 transmits a power system power supply PWR request signal for requesting the start of supply of the voltage of the power system power supply PWR to the first camera communication unit 112 (steps S1120 and S2120).

Subsequently, initialization (step S130) is performed. This initialization process is a process in which the voltage of the power system power supply PWR is supplied from the camera body 100 and the adapter 300 and the interchangeable lens 200 are initialized.
First, when the power system power supply PWR request signal is received by the first camera communication unit 112, the camera control unit 110 controls the switch 125 to be in a conductive state and supplies the voltage of the power system power supply PWR from the battery 190 to the adapter 300. (Power feeding) is performed (step S1130).

Next, the first camera communication unit 112 transmits an initialization execution command as an initialization request to the first adapter communication unit 312 (step S1140).
When the initialization execution command is received by the first adapter communication unit 312, the adapter control unit 310 executes a mounting determination process (step S 140) and a lens initialization process (step S 150).

The attachment determination process (step S140) is an interchangeable lens attachment determination process for the adapter 300.
The adapter control unit 310 causes the adapter power supply unit 320 to generate a voltage of the lens control system power supply Vc and supply (power feed) the interchangeable lens 200. Next, the first adapter communication unit 312 performs a lens mounting determination process through communication with the first lens communication unit 212, and determines whether or not an interchangeable lens is mounted. When the interchangeable lens 200 is attached, the first lens communication unit 212 transmits a lens driving system power supply Vp request signal to the first adapter communication unit 312 (steps S2140 and S3140). Then, the adapter controller 310 advances the process to the lens initialization process (step S150).

The lens initialization process (step S150) is an initialization process for the adapter 300 and the interchangeable lens 200.
When the first adapter communication unit 312 receives the lens drive system power supply Vp request signal, the adapter control unit 310 causes the adapter power supply unit 320 to generate the voltage of the lens drive system power supply Vp and supply (power supply) the interchangeable lens 200. Let Next, the first adapter communication unit 312 performs lens initialization processing through communication with the first lens communication unit 212 (steps S2150 and S3150). Here, the reason why the lens driving system power supply Vp is not supplied from the adapter 300 side to the interchangeable lens 200 side is as follows. Some interchangeable lenses do not require power supply (for example, manual focus lenses). Generating the lens driving system power supply Vp and performing the power supply operation when such an interchangeable lens is mounted causes unnecessary work to be performed on the adapter 300 side. Therefore, in this embodiment, the power supply procedure is determined in order to prevent the adapter 300 from performing unnecessary work.

  Next, when the initialization of the adapter 300 and the interchangeable lens 200 is completed, the first camera communication unit 112 sets “initialization completed” as information indicating that the initialization is completed as a response result to the initialization confirmation command. Received from the first adapter communication unit 312. Thereby, the camera control unit 110 acquires initialization completion information (step S1150).

  When the initialization is completed, the camera control unit 110 determines whether or not the adapter 300 is attached based on the information acquired in the information exchange between the camera body 100 and the adapter 300 in step S1120 (step S1155). ). If it is determined in step S1155 that the adapter 300 is not attached, the camera control unit 110 attaches a standard conforming lens (for example, the interchangeable lens 200A) directly to the camera body 100 without using the adapter 300. It is determined that On the other hand, if it is determined in step S1155 that the adapter 300 is attached, the camera control unit 110 proceeds to the lens information acquisition (step S160) process.

The lens information acquisition (step S160) processing is processing for determining whether or not the interchangeable lens is attached to the adapter 300, and acquiring information about the interchangeable lens 200 attached to the adapter 300. The information of the interchangeable lens 200 is, for example, lens information such as a lens type, presence / absence of a hotline communication function, presence / absence of an anti-vibration function, presence / absence of an electromagnetic diaphragm, open F value, focal length information, and the like.
The first camera communication unit 112 transmits a lens information acquisition command to the first adapter communication unit 312, receives a lens information response from the first adapter communication unit 312, and acquires information of the interchangeable lens 200 ( Step S1160, Step S2160).

Next, the camera control unit 110 determines the type (type) of the interchangeable lens 200 based on the lens information acquired in the lens information acquisition (step S160) (step S1165). For example, the camera control unit 110 determines whether or not the CPU lens is mounted on the adapter 300 based on the determination result of the mounting determination process (step S140).
If it is determined in step S1165 that the CPU lens is not mounted, it is determined that the CPU lens is not mounted, and the process is terminated.
On the other hand, if it is determined in step S1165 that the CPU lens is attached, the process proceeds to lens function start (step S170).
Further, the camera control unit 110, for example, based on the acquired lens information, for example, a lens having an AF control (processing) function, a lens having a VR lens 223 control (processing) function (anti-vibration control function), or It is determined whether the lens is an electromagnetic diaphragm type lens.

The lens function start process (step S170) is a process for starting each function according to the type (function) of the interchangeable lens based on the lens information acquired in the lens information acquisition process (step S160). The first camera communication unit 112 communicates with the first lens communication unit 212 via the first adapter communication unit 312, for example, acquisition of a lens control table, hotline communication permission setting, image stabilization control start setting, etc. Processing is performed (step S1170, step S2170, step S3170).
Then, the camera control unit 110 is activated by determining that the CPU lens is attached, and ends the process.

  Thus, the adapter control unit 310 is activated in response to the supply of the voltage of the control system power supply Vcc1 from the camera body 100, and requests the camera body 100 to start supplying the voltage of the power system power supply PWR. Further, the adapter control unit 310 generates the voltage of the lens control system power supply Vc supplied from the power system power supply PWR to the interchangeable lens 200 in response to the supply of the power system power supply PWR voltage from the camera body 100. Further, the adapter control unit 310 supplies the lens control system power supply Vc voltage to the interchangeable lens 200, so that when the interchangeable lens 200 is requested to supply the lens drive system power supply Vp, the adapter control unit 310 receives the lens from the power system power supply PWR. A voltage of the driving system power supply Vp is generated and supplied to the interchangeable lens 200.

Accordingly, the adapter control unit 310 can generate a voltage to be supplied to the interchangeable lens 200 based on the voltage supplied from the camera body 100 and appropriately control the voltage supply start timing of each power supply system. it can.
In addition, the adapter control unit 310 can determine the specification of the interchangeable lens 200 in the lens activation process, and supply a voltage to the interchangeable lens 200 based on the determined specification. Further, the adapter control unit 310 can stop the supply of voltage to the interchangeable lens in the case of an interchangeable lens that does not require voltage supply based on the determined specification of the interchangeable lens.

(Details of initialization processing in lens startup processing)
Next, the initialization (step S130) in the lens activation process described with reference to FIG. 12 will be described in detail with reference to FIG.
FIG. 13 is a diagram illustrating an example of a processing sequence of an initialization process in the lens activation process. In FIG. 13, processes corresponding to the processes in FIG. 12 are assigned the same reference numerals, and descriptions thereof are omitted.

  After supplying the voltage of the power system power supply PWR (step S1130), the first camera communication unit 112 transmits an initialization execution command to the first adapter communication unit 312 as an initialization request (step S1140). Thereafter, the first camera communication unit 112 sends an initialization completion confirmation command (steps S1145a, S1145b, S1145c,...) For detecting the completion of the initialization process by the adapter 300 to the first adapter communication unit 312. It transmits repeatedly and waits for the response of "initialization completion" from the 1st adapter communication part 312 (step S1145).

For example, the first camera communication unit 112 sends an initialization completion confirmation command to the first adapter communication unit 312 with a period Ts until a response of “initialization completion” is acquired (or in advance for time-out processing). (Same period) Send repeatedly. The communication cycle Ts of the initialization completion confirmation command is a time interval shorter than the cycle Tm of steady data communication described with reference to FIG. That is, the first adapter communication unit 312 performs a process of transmitting information indicating whether or not the initialization process has been completed (a process of responding to the initialization completion confirmation command) at a time interval shorter than the period Tm of steady data communication. It performs with respect to the control part 110. FIG. That is, whether or not the initialization process has been completed is detected by the camera control unit 110 at a time interval shorter than the period Tm of steady data communication. In this way, by speeding up the interval (cycle) for confirming completion of initialization, the processing to be performed after completion of initialization can be started at an early stage, and the time required for starting up the apparatus and system can be shortened. I can do it.
The first adapter communication unit 312 is information indicating that the initialization is not completed in response to the initialization completion confirmation command repeatedly transmitted from the first camera communication unit 112 until the initialization is completed. As “Initialization” as an initialization state.
In this figure, the first camera communication unit 112 obtains a “initialization complete” response from the response result to the initialization completion confirmation command in step S1145n.
As a result, the first camera communication unit 112 can detect whether or not the initialization process of the adapter 300 has been completed at a period of a time interval that is earlier than the period of the steady data communication.

  When the initialization execution command is received by the first adapter communication unit 312, the adapter control unit 310 performs an initialization process for each unit included in the adapter 300 (step S 2130). This is, for example, a process of resetting the memory in the adapter control unit 310 of the adapter 300. Next, the adapter control unit 310 controls the aperture interlocking lever driving unit 330 to move the aperture interlocking lever 350 to the retracted position (step S2135).

Subsequently, the adapter control unit 310 advances the process to the lens attachment determination process (step S140). In this lens mounting determination process, the adapter control unit 310 first causes the adapter power source unit 320 to generate a voltage of the lens control system power source Vc and supply (power feed) the interchangeable lens 200 (step S2142). Next, the first adapter communication unit 312 determines whether or not there is a response from the first lens communication unit 212 of the interchangeable lens 200 in response to supplying (powering) the lens control system power supply Vc to the interchangeable lens 200. Based on the above, it is determined whether or not the interchangeable lens 200 is mounted, and a mounting determination is made (steps S2144 and S3144).
For example, when there is no response from the first lens communication unit 212, it is determined that the interchangeable lens 200 is not attached to the adapter 300 (the lens is not attached).
On the other hand, when there is a response from the first lens communication unit 212, the first adapter communication unit 312 determines that the interchangeable lens 200 is attached to the adapter 300, and between the adapter 300 and the interchangeable lens 200. In step S2146 and step S3146, information exchange is performed.

In the information exchange communication between the adapter 300 and the interchangeable lens 200, for example, the first adapter communication unit 312 and the first lens communication unit 212 communicate with each other to identify each other, and thus perform normal operation. Check whether communication is possible. In addition, the first adapter communication unit 312 is information indicating lens information for identifying the type of the interchangeable lens 200, and a state of a lens switch (for example, a switch for switching between AF and MF (Manual Focus)) provided in the interchangeable lens 200. Etc.
The first lens communication unit 212 transmits a lens drive system power supply Vp request signal to the first adapter communication unit 312. Then, the adapter controller 310 advances the process to the lens initialization process (step S150).

In the lens initialization process (step S150), when the first adapter communication unit 312 receives the lens drive system power supply Vp request signal, the adapter control unit 310 first converts the lens drive system power supply Vp voltage to the adapter power supply unit 320. And is supplied (powered) to the interchangeable lens 200 (step S2152). Next, the first adapter communication unit 312 transmits a lens initialization execution command for requesting execution of the lens initialization process to the first lens communication unit 212 (step S2154). When the lens initialization execution command is received by the first lens communication unit 212, the lens control unit 210 executes a lens initialization process in accordance with the lens initialization execution command from the first adapter communication unit 312 (step S3154). ).
The lens initialization processing includes processing such as initialization of the lens control unit 210, initialization of AF control (control of the focus lens 222), initialization of image stabilization control (control of the VR lens 223), and the like. In the case of an electromagnetic diaphragm type CPU lens, an initialization process of electromagnetic diaphragm control is also executed in this lens initialization process.
After the lens initialization process is completed, the first adapter communication unit 312 starts regular lens communication with the first lens communication unit 212 (step S2156).

  Next, the adapter control unit 310 executes initialization driving of the aperture interlocking lever 350 (step S2158). For example, the adapter control unit 310 controls the aperture interlocking lever driving unit 330 to execute a process of moving the position of the aperture interlocking lever 350 to a predetermined position. Note that the adapter control unit 310 moves the position of the aperture interlocking lever 350 to a retracted position, an open position, a position stored in the storage unit, or the like according to control conditions, for example.

  Subsequently, in response to the completion of the initialization drive of the aperture interlock lever 350 in step S2158, the first adapter communication unit 312 receives an initialization completion confirmation command (step S1145n) from the first camera communication unit 112. In response, “initialization complete” is returned as the initialization state (step S2159). The first camera communication unit 112 acquires a response of “initialization complete” from the response result to the initialization completion confirmation command in step S1145n (step S1150), and ends the initialization.

  As described above, the adapter control unit 310 initializes each unit included in the adapter 300, determines whether to install the adapter 300, and attaches to the adapter 300 in accordance with the initialization execution command from the first camera communication unit 112. Initialization of the state of the interchangeable lens 200 being performed can be executed. Further, the first camera communication unit 112 confirms whether or not the initialization process of the adapter 300 has been completed at a period of time interval (for example, 10 msec) earlier than the period of steady data communication (the period Tm / for example, 16 msec). Can be detected. Therefore, the camera control unit 110 can appropriately detect whether or not the initialization process is completed at an early timing.

(Example of initialization completion response data)
As described with reference to FIG. 13, the adapter control unit 310 requests the interchangeable lens 200 to initialize the state of the interchangeable lens 200 and then initializes the aperture interlocking lever 350 (initialization). Process). In addition, after the lens initialization process for initializing the state of the interchangeable lens 200 is completed, the adapter control unit 310 completes the initialization process according to the initialization execution command transmitted by the first camera communication unit 112. . That is, the lens initialization process is completed before the adapter control unit 310 completes the initialization process (including the movement of the aperture interlock lever 350 to the retracted position).
As a result, the adapter control unit 310 can respond to the first camera communication unit 112 that the initialization is completed after the lens initialization process is completed.

FIG. 14 is a diagram illustrating an example of a data structure in an initialization state in response to an initialization completion confirmation command in command data communication.
For example, in the command data communication, the data in the initialization state that responds to the initialization completion confirmation command is 2-byte data. Of the 2-byte data, the lower 1 byte D10 (bits 0 to 7) is command data indicating that the data is a response to the initialization completion confirmation command. For example, as shown in this figure, “15H” (15H in hexadecimal) data is set in the lower 1 byte D10 as command data for identifying that the data is a response to the initialization completion confirmation command. An example is shown. Further, the upper 1 byte D20 (bits 8 to 15) is data in an initialization state that responds. In the upper 1 byte D20, a bit (aperture interlocking lever initialization completion information) indicating whether or not the initialization process of the aperture interlocking lever 350 in the adapter 300 is completed is set in bit8. In bit 9, a flag (lens initialization completion information) indicating whether or not the initialization processing of the focus lens 222 in the interchangeable lens 200 has been completed is set. In bit 10, a flag (lens initialization completion information) indicating whether or not the initialization process of the VR lens 223 in the interchangeable lens 200 is completed is set. Bits 11 to 15 are undefined and invalid data areas.

FIG. 14A shows the completion of initialization set in the first adapter communication unit 312 in response to the first camera communication unit 112 sending an initialization execution command to the first adapter communication unit 312 as an initialization request. This is data in an initialization state in response to the confirmation command (data set in step S2130 in FIG. 13). In other words, the first adapter communication unit 312 responds to the initialization completion confirmation command with data shown in FIG. 14A as data indicating that it is in an initialization state indicating “initializing”.
At this timing (step S2130 in FIG. 13), the initialization processing of the focus lens 222, the initialization processing of the VR lens 223, and the initialization processing of the aperture interlocking lever 350 are not completed ( The process of initializing the state of the interchangeable lens 200 has not been completed). However, the first adapter communication unit 312 sets a flag “0” indicating that the initialization process has been completed for each of bits 9 to 10 indicating the initialization state on the interchangeable lens 200 side. On the other hand, a flag “1” indicating that the initialization process has not been completed is set in bit 8 indicating the initialization state data of the aperture interlock lever 350. That is, the adapter 300 always sets the completion flag “0” indicating that the initialization has been completed to bits 9 to 10 regardless of the state of the initialization process on the interchangeable lens 200 side (the progress state of the initialization process). By configuring the initialization flag in the adapter 300 in this way, even when an interchangeable lens of a type that cannot output the initialization completion flag to the adapter 300 is attached to the camera body 100 via the adapter 300, There is an advantage that the types of interchangeable lenses that can be used can be expanded without stopping the operation (camera system) at the stage of the initialization processing sequence described above.

  At the time when the lens initialization process (step S150 in FIG. 13) is completed, the initialization process of the aperture interlock lever 350 on the adapter 300 side has not been completed yet.

FIG. 14B shows data in an initialization state in response to an initialization completion confirmation command set when the initialization process of the initialization driving of the aperture interlock lever 350 (step S2158 in FIG. 13) is completed. At this point (step S2158 in FIG. 13), the lens-side initialization process (step S150 in FIG. 13) is normally completed.
When the initialization process of the aperture interlock lever 350 is completed, the first adapter communication unit 312 sets a flag “0” indicating that the initialization process is completed in bit 8 of the data in the initialization state. As a result, the flag “0” indicating that the initialization process has been completed is set in all the bits 8 to 10 of the data in the initialization state. That is, the first adapter communication unit 312 responds to the initialization completion confirmation command with data shown in FIG. 14B as initialization state data indicating “initialization completion”.

That is, in the initialization completion information indicating whether or not the initialization process has been completed, lens initialization completion information that always indicates whether or not the lens initialization process (the process of initializing the state of the interchangeable lens 200) has been completed. (Bits 9 and 10 in FIG. 14) and information indicating whether or not the aperture interlock lever 350 initialization process (aperture interlock lever initialization process) has been completed (aperture interlock lever initialization completion information) (bit 8 in FIG. 14). And are included.
Then, the first adapter communication unit 312 instructs the interchangeable lens 200 to initialize, and at the same time, sets the value of the lens initialization completion information to a value indicating the completion of initialization, and the aperture-linked lever initialization process is completed. Accordingly, the aperture interlock lever initialization completion information value is set to a value indicating completion of initialization.
That is, the adapter control unit 310 sets the value of the lens initialization completion information to a value indicating the completion of initialization regardless of the progress state of the process for initializing the state of the interchangeable lens 200. Further, the adapter controller 310 sets the value of the aperture interlock lever initialization completion information to a value indicating the completion of initialization in response to the completion of the aperture interlock lever initialization process, and the camera controller 110 initially Send complete information.
The adapter control unit 310 responds (transmits) initialization completion information to the camera control unit 110 in accordance with the timing of the initialization completion confirmation command by the camera control unit 110 (detection timing of initialization processing).

As described above, the adapter control unit 310 updates the information (flag) indicating whether or not the initialization is completed at the completion timing of the initialization process of the aperture interlock lever 350 and responds to the camera control unit 110.
Therefore, the adapter control unit 310 displays an initialization completion state indicating that all initialization including initialization on the interchangeable lens 200 side is completed at the timing when the initialization process of the aperture interlock lever 350 is completed. 110 can be responded to.

(Initialization when a standard-compliant lens is attached)
In the above embodiment, the initialization process when the adapter 300 is connected to the camera body 100 has been described. However, the present invention is not limited to this. For example, in an initialization process when an accessory other than the adapter 300 is connected to the camera body 100, whether the accessory has been initialized by the camera body 100 may be detected. For example, in an accessory that is detachably fixed to the camera body 100, the accessory control unit included in the accessory periodically communicates with the camera control unit 110 included in the camera body 100 (steady periodic communication). Is controlled by. In the initialization process in this case, the accessory control unit performs the initialization process according to the control instruction from the camera control unit 110, and whether or not the initialization process is completed is shorter than the periodic communication cycle. Processing detected by the camera control unit 110 may be performed at intervals.
As an example, a case where the accessory that is detachably fixed to the camera body 100 is a standard-compliant lens will be described below.
When a standard-compliant lens (for example, interchangeable lens 200A) is directly connected to the camera body 100 without using the adapter 300, in the lens steady process, for example, the first lens communication unit 212A (the above-described accessory control). The first lens communication unit 212A provided in the lens control unit 210A corresponding to the unit performs steady data communication with the first camera communication unit 112 at a cycle Tm (first adapter communication shown in FIG. 9). The steady data communication is executed at the same cycle Tm as the steady data communication between the unit 312 and the first camera communication unit 112).
Further, in the lens activation process, the first camera communication unit 112 transmits an initialization execution command to the first lens communication unit 212A in the same manner as the initialization request process in step S1140 shown in FIG. That is, the first camera communication unit 112 transmits an initialization execution command to the first lens communication unit 212 </ b> A instead of the first adapter communication unit 312. After that, the first camera communication unit 112 repeatedly transmits an initialization completion confirmation command to the first lens communication unit 212A at the cycle Ts in the same manner as the initialization completion confirmation process in step S1145, and the first camera communication unit 212A Wait for a response of "Initialization complete".
Further, when the initialization execution command is received by the first lens communication unit 212A, the lens control unit 210A executes a lens initialization process for the interchangeable lens 200A. Then, in response to the completion of the lens initialization process by the lens control unit 210A, the first lens communication unit 212A responds “initialization complete”.
As described above, the processes from the initialization request to the initialization completion confirmation in the camera control unit 110 are performed when the interchangeable lens 200 is connected to the camera body 100 via the adapter 300 and when the interchangeable lens 200A is directly connected. The same processing is performed in both cases of being connected to the network.
That is, the first lens communication unit 212A performs a process of transmitting information indicating whether or not the initialization process has been completed (a process of responding to the initialization completion confirmation command) at a time interval shorter than the period Tm of steady data communication. It performs with respect to the control part 110. FIG. That is, even when the interchangeable lens 200A is directly connected to the camera body 100, whether or not the initialization process is completed is confirmed by the camera control unit 110 at a time interval shorter than the period Tm of steady data communication. Detected by.
Thereby, the first camera communication unit 112 can detect whether or not the initialization process of the interchangeable lens 200A has been completed at a period of a time interval earlier than the period of the steady data communication. Thereby, the camera control unit 110 can appropriately detect whether or not the initialization process is completed at an early timing.

(Power shutdown processing and low power consumption processing)
Next, power shutdown processing and low power consumption processing will be described.
Here, the low power consumption processing refers to shooting in which the power consumption is reduced in the operation state (operation mode) of the camera body 100 compared to the operation mode (first operation mode) in which shooting processing can be performed. This is a process for switching to an operation mode (second operation mode / low power consumption mode / sleep mode) that cannot be performed.
Here, in the following description, the low power consumption process is referred to as a sleep process, and the operation state (operation mode) changed by the sleep process is referred to as a sleep mode.
For example, in response to an interrupt request due to power-off in the camera body 100, power-off processing is executed. In addition, the sleep process is executed when no operation continues for a predetermined time or more.
Further, the power shutdown process and the sleep process include a lens shutdown process that stops (shuts down) the functions of the adapter 300 and the interchangeable lens 200 and stops (shuts down) the supply of the power system power supply PWR from the camera body 100. It is. That is, the power shutdown process and the sleep process are processes for stopping the voltage supplied to the interchangeable lens 200 and stopping (cutting off) the supply of the voltage of the power system power supply PWR.

  Further, when the operation mode of the camera body 100 is changed to the sleep mode, the supply of the power system power supply PWR from the camera body 100 is stopped, and the supply of the control system power supply Vcc1 is continued. For example, when the operation mode of the camera body 100 transitions to the sleep mode, the camera body 100 continues to supply the voltage of the control system power supply Vcc1 for a predetermined period. Here, the predetermined period is, for example, a period determined to return to the operation mode in which the photographing process can be performed by detecting an operation on the camera body 100, or a no-operation state. This is a period or the like set for shifting to the power-off process of the camera body 100 when the operation is further continued.

In addition, when the operation mode of the camera body 100 transitions to the sleep mode, an instruction signal (shutdown execution command) indicating that the camera is shut off or transition to the sleep mode is sent from the camera control unit 110 to the adapter control unit 310. The adapter control unit 310 receives the instruction signal, and executes a lens shutdown process for stopping the power supply to the interchangeable lens 200.
Next, when the lens shutdown process ends, the adapter control unit 310 transmits to the camera body 100 a permission signal (shutdown preparation completion response) indicating permission to enter the power-off state or the sleep mode. Subsequently, in response to the permission signal transmitted from the adapter control unit 310, the supply of the voltage of the power system power supply PWR from the camera body 100 is stopped.

FIG. 15 is a diagram illustrating an example of a processing sequence of a power shutdown process and a sleep process.
With reference to this figure, the power-off process and the sleep process of the camera system 1 will be described.
The power shutdown process and the sleep process are performed in the order of lens function end (step S410), shutdown (step S420), and sleep mode transition (step S430). In the power shut-off process and the sleep process, communication performed by the camera body 100 with the interchangeable lens 200 via the adapter 300 is command data communication.

When the power cut-off process or the sleep process is started, first, a lens function end process (step S410) is performed.
The first camera communication unit 112 stops the functional operation of the interchangeable lens 200 by communicating with the first lens communication unit 212 via the first adapter communication unit 312 (step S1210, step S2210, step S3210). Thereby, the lens control unit 210 stops the functional operation of the interchangeable lens 200. For example, processing such as termination of anti-vibration control of the interchangeable lens 200 or prohibition of hotline communication is performed by processing for termination of the lens function.

Next, a shutdown (step S420) process is performed.
The first camera communication unit 112 transmits a shutdown execution command to the first adapter communication unit 312 as a shutdown request (step S1220). Thereafter, the first camera communication unit 112 repeatedly transmits a shutdown completion confirmation command, and waits for a response for completion of shutdown preparation from the first adapter communication unit 312.

  When the first adapter communication unit 312 receives a shutdown execution command, the adapter control unit 310 starts lens shutdown processing. First, the first adapter communication unit 312 transmits a command to the first lens communication unit 212 to instruct the lens drive system power supply Vp to be unable to supply power. In response to the reception of this command by the first lens communication unit 212, the lens control unit 210 stops the supply (power supply) of the voltage of the lens driving system power supply Vp in the interchangeable lens 200 (step S3220). Next, the first adapter communication unit 312 stops regular lens communication with the first lens communication unit 212. Then, the adapter control unit 310 stops the supply of the lens drive system power supply Vp from the adapter power supply unit 320, and then stops the supply of the lens control system power supply Vc (step S2220).

  Next, the adapter control unit 310 moves the aperture interlocking lever 350 to the retracted position (step S2230), and executes a shutdown process for each unit included in the adapter 300 (step S2235). Subsequently, when the shutdown process is completed, the first adapter communication unit 312 completes the shutdown process in the adapter 300 (the adapter 300 and the interchangeable lens 200) according to the shutdown completion confirmation command received from the first camera communication unit 112. “Shutdown preparation complete” is returned to the first camera communication unit 112 as information indicating that it has been performed. Further, the first adapter communication unit 312 responds to the first camera communication unit 112 with or without a sleep process request (step S2240).

The first camera communication unit 112 acquires a “shutdown preparation complete” response from the first adapter communication unit 312 as a response result of the shutdown completion confirmation command (step S1240).
When the first adapter communication unit 312 receives a response indicating that the shutdown preparation is complete, the camera control unit 110 controls the switch 125 to the cutoff state to stop the supply of the voltage of the power system power supply PWR (step S1250).

  Next, the camera control unit 110 determines whether there is a sleep mode transition request in the response result of the shutdown completion confirmation command (step S1255). If it is determined in step S1255 that there is no sleep mode transition request, the camera control unit 110 controls the camera power supply unit 120 to stop supplying the voltage of the control system power supply Vcc1 (step S1270).

On the other hand, if it is determined in step S1255 that there is a request for shifting to the sleep mode, processing for shifting to the sleep mode (step S430) is performed. First, the first camera communication unit 112 transmits an instruction to transition to the sleep mode to the first adapter communication unit 312. As a result, the adapter control unit 310 transitions to the sleep mode. For example, the first adapter communication unit 312 controls the signal RDY to H (high) level before the start of the process of transitioning to the sleep mode, and after the process of transitioning to the sleep mode is completed, the signal RDY is set to L (low). ) Control to level. The first camera communication unit 112 detects the falling edge of the signal level of the signal RDY to detect that the process of transitioning to the sleep mode of the adapter 300 is completed, and supplies the voltage of the control system power supply Vcc1. Switching to the small power supply state (steps S1260 and S2260).
As a result, a transition is made to the power-off state or the sleep mode.

As described above, when the camera body 100 transitions to the sleep mode, the camera control unit 110 stops the supply of the voltage of the power system power supply PWR to the adapter 300 and continues the supply of the voltage of the control system power supply Vcc1. That is, when the adapter 300 transitions to the sleep mode, the supply of the voltage of the power system power supply PWR from the camera body 100 is stopped, and the supply of the voltage of the control system power supply Vcc1 is continued.
Thereby, power consumption can be reduced in the sleep mode. Further, the supply of the voltage of the control system power supply Vcc1 is continued and the processing of the adapter control unit 310 is not completely stopped (the adapter control unit 310 is operated with the minimum power necessary for the return processing). Therefore, the adapter control unit 310 can return (start up) in a shorter time than when the process is completely stopped when returning (starting up) from the sleep mode to the steady state.

(Processing at the moment of power interruption)
The power system power supply PWR, the lens drive system power supply Vp, and the lens control system power supply Vc each have a predetermined voltage range.
The voltage of the power system power supply PWR, the lens driving system power supply Vp, and the lens control system power supply Vc is detected by the Vc voltage detection unit 325, the Vp voltage detection unit 326, and the PWR voltage detection unit 327, and is detected by the adapter control unit 310. Results are supplied. When the voltage of any one of the detected power system power supply PWR, lens drive system power supply Vp, and lens control system power supply Vc falls below a predetermined voltage range, the adapter control unit 310 The detection result is supplied (notified) to the camera body 100.
For example, the adapter control unit 310 supplies the voltage (voltage value) of the power system power supply PWR supplied from the camera body 100 and the voltage (voltage) of the lens drive system power supply Vp that supplies power to the interchangeable lens 200 from the adapter power supply unit 320. Value), and any voltage (voltage value) of the lens control system power supply Vc that supplies power to the interchangeable lens 200 from the adapter power supply unit 320 is a predetermined voltage range defined for each of them. In the case of lowering, the lens initialization process is executed in order to initialize the interchangeable lens 200 (the state thereof).

  Specifically, an initialization request signal that instructs the camera control unit 110 included in the camera body 100 of the adapter control unit 310 to execute initialization processing including lens initialization processing is sent to the first adapter communication unit. The data is transmitted from 312 to the first camera communication unit 112 and supplied (notified) to the camera body 100. Further, the adapter control unit 310, when any of the detected voltages of the lens drive system power supply Vp and the lens control system power supply Vc falls below a predetermined voltage range, respectively, The supply of the voltages of Vp and the lens control system power supply Vc is stopped, and an initialization request signal is transmitted to the camera body 100.

This initialization process is a process for temporarily stopping the supply of the voltage of the power system power supply PWR in accordance with the initialization request signal and starting the supply again. This initialization process is a process for temporarily stopping the supply of the voltage of the control system power supply Vcc1 in response to the initialization request signal and starting the supply again.
Note that the adapter control unit 310 starts supplying the voltages of the lens driving system power supply Vp and the lens control system power supply Vc in accordance with the initialization process by the camera body 100. That is, the adapter control unit 310 initializes the lens control unit 210 according to the initialization process by the camera body 100.

That is, when the adapter control unit 310 detects a decrease in the power supply voltage, the adapter control unit 310 first stops the supply of voltage to the interchangeable lens 200. Next, the adapter control unit 310 transmits an initialization request signal to the camera control unit 110 to temporarily stop the supply of the power supply voltage supplied from the camera body 100 and then start the supply again. . As a result, when the lens activation process is executed again, the initialization process is performed, and the adapter control unit 310 supplies the interchangeable lens 200 with a voltage.
Therefore, the adapter control unit 310, when any one of the voltages of the power system power supply PWR, the lens drive system power supply Vp, and the lens control system power supply Vc falls below a predetermined voltage range, Initialization of the adapter 300 and the interchangeable lens 200 can be executed. For this reason, it is possible to prevent a problem that the operation on the interchangeable lens 200 side is continued in an unstable power supply state.
In addition, among the voltage values of the power system power supply PWR, the lens drive system power supply Vp, and the lens control system power supply Vc, the judgment may be given superiority (importance or priority). From the viewpoint of maintaining stable power supply, it is highly necessary that the voltage value supplied to supply the supply voltage (power supplied to the adapter power supply unit 320) first falls within a predetermined range. Otherwise, the voltage value generated thereafter may also fluctuate. Therefore, it is determined first whether or not there is an abnormality in the voltage value of the power system power supply PWR. Next, what is important is that the lens control unit 210 needs to be driven stably in order for the interchangeable lens 200 side to perform correct control. For this purpose, a second determination is made as to whether or not there is an abnormality in the lens control system power supply Vc that supplies power to the lens control unit 210. That is, it is only necessary to determine whether or not there is an abnormality in each voltage value with the priorities of the power system power supply PWR, the lens control system power supply Vc, and the lens drive system power supply Vp. By giving superiority to inferiority in this way, for example, even when the voltage value of the lens driving system power supply Vp is abnormal, the voltage value of the lens control system power supply Vc is normal and the lens control unit 210 is normal. Are operating (normally communicating with the adapter control unit 310), the reset lens (initialization process) is not executed on the interchangeable lens 200 side, and other error processing (lens It is also possible to recover by re-driving / retrying the driving element on the side. Thereby, an easy (unnecessary) initialization process can be prevented.

Next, with reference to FIG. 16, processing at the time of instantaneous power interruption will be described as an example of processing when the power supply voltage decreases.
FIG. 16 is a diagram illustrating an example of a processing sequence at the time of instantaneous power interruption.

  In the lens steady state, the first camera communication unit 112 and the first adapter communication unit 312 perform steady data communication at a cycle Tm (steps S1310, S1312, and S1314). The adapter power supply control unit 311 of the adapter control unit 310 includes a lens control system power supply Vc, a lens drive system power supply Vp, and a power system based on the detection results of the Vc voltage detection unit 325, the Vp voltage detection unit 326, and the PWR voltage detection unit 327. It is detected that the voltage of the power supply PWR is temporarily lowered (step S2310). The example shown in FIG. 16 is an example in the case where the voltage of the lens control system power supply Vc, the lens drive system power supply Vp, and the power system power supply PWR is temporarily reduced and then recovered (when a power supply interruption occurs). is there. The adapter power supply control unit 311 executes a process of shutting off the power to be supplied to the interchangeable lens 200 in response to detecting that the voltage has temporarily decreased (a state where an instantaneous power supply interruption has occurred). . For example, the adapter power supply control unit 311 causes the adapter power supply unit 320 to execute a control for stopping the supply of the voltage in the order of the lens drive system power supply Vp and the lens control system power supply Vc as the power shutoff process (step S2320).

Next, after the adapter power supply unit 320 stops the supply of the voltages of the lens driving system power supply Vp and the lens control system power supply Vc, the first adapter communication unit 312 displays information indicating that a power supply interruption is detected. It responds to the 1st camera communication part 112 by regular data communication (step S1314) (step S2330). For example, the first adapter communication unit 312 transmits a “power supply interruption detected initialization signal” (initialization request signal) to the first camera communication unit 112 as a signal indicating that a power supply interruption has been detected. .
Subsequently, the camera control unit 110 controls the switch 125 to the cutoff state in response to the reception of the “initialization request signal with instantaneous power interruption detection” received by the first camera communication unit 112, so that the power system power supply PWR The supply of voltage is stopped (step S1330). Further, after stopping the supply of the voltage of the power system power supply PWR, the camera control unit 110 controls the camera power supply unit 120 to stop the supply of the voltage of the control system power supply Vcc1 (step S1340).
Subsequently, the camera control unit 110 executes a lens activation process (step S100 in FIG. 8), and again executes a voltage supply and initialization process.

  As described above, when an instantaneous interruption of the power supplied to the interchangeable lens 200 occurs, the adapter control unit 310 detects the occurrence of the instantaneous interruption and is supplied from the camera body 100 with a voltage to be supplied to the interchangeable lens. The voltage is temporarily stopped to turn off the power, and then restart is executed to execute the initialization process. As a result, even when a power interruption occurs, the adapter control unit 310 can initialize the adapter 300 and the interchangeable lens 200 to transition to a normal operation state.

In the above embodiment, the adapter power supply control unit 311 determines the lens control system power supply Vc, the lens drive system power supply Vp, and the power system from the detection results of the Vc voltage detection unit 325, the Vp voltage detection unit 326, and the PWR voltage detection unit 327. When it is detected that the voltage of the power supply PWR is temporarily lowered, the power supplied to the interchangeable lens 200 is shut off, and the lens is initialized. However, when only the detection result of the Vp voltage detection unit 326 is determined to be a voltage drop (when the detection results of the Vc voltage detection unit 325 and the PWR voltage detection unit 327 are not determined to be a voltage drop), the adapter control unit 310 and Since the communication with the lens control unit 210 itself is normally executed, the initialization process in the interchangeable lens 200 may not be executed.
In the above embodiment, an example in which the camera control unit 110 initializes the interchangeable lens 200 in response to the detection result of the instantaneous power interruption being transmitted from the adapter control unit 310 to the camera control unit 110 (adapter control). Although the example in which the unit 310 performs initialization while looking for an instruction from the camera control unit 110 has been described, the present invention is not limited to this. For example, the adapter control unit 310 may cause the interchangeable lens 200 to perform initialization without determining an instruction from the camera control unit 110 and determining the necessity of initialization.
In the present embodiment, the configuration including all the three voltage detection units 325 to 327 described above has been described. However, the same effect as that of the present embodiment can be obtained even in a configuration having only one or two of these three voltage detection units. In this case, the PWR voltage detection unit 327 is particularly effective (priority) as a part for performing voltage detection. Hereinafter, the priority order in terms of its effect is the order of the Vc voltage detection unit 325 and the Vp voltage detection unit 326. It is. The effect of this is as described above.

  As described above, according to the present embodiment, various types of optical systems can be appropriately functioned in the interchangeable lens camera system.

The interchangeable lens 200 and the camera body 100 shown in FIGS. 3, 5, and 6 are not limited to the configuration in which only the adapter 300 is connected.
For example, the interchangeable lens 200 and the camera body 100 may be configured to be connected to the interchangeable lens 200 via an adapter 300 and another conversion adapter (such as a teleconverter).
Moreover, although the adapter 300 of the said embodiment is a structure which is not provided with an optical system, it is good also as a structure provided with the optical system.

  In addition, the camera control unit 110, the lens control unit 210, or the adapter control unit 310 in the above-described embodiment may be realized by dedicated hardware, or by a memory and a CPU (Central Processing Unit). Even if it is configured and the functions for realizing the functions of the camera control unit 110, the lens control unit 210, and the adapter control unit 310 are loaded into a memory and executed, the functions are realized. Good.

  FIG. 17 is an example of a functional block diagram of the camera system. FIG. 17 is a functional block diagram showing the camera system 1 shown in FIG. In FIG. 17, parts corresponding to those in FIG. 3 are denoted by the same reference numerals, and part or all of the description thereof is omitted. In FIG. 17, from the viewpoint of easy viewing on the drawing, illustration of a part of the configuration shown in FIG. 3 is omitted (however, the configuration shown in FIG. 3 is the camera system shown in FIG. 17). 1). Further, the illustration of a configuration not shown in FIG. 3 is added.

As shown in FIG. 17, the camera system 1 includes a camera body 100, an interchangeable lens 200, and an adapter 300. In the following description, first, the configuration of each device (camera body 100, interchangeable lens 200, adapter 300) constituting the camera system 1 will be described, and thereafter each control (signal flow, etc.) will be described. .
(Configuration of interchangeable lens)
The interchangeable lens 200 includes a lens side mount 201 including a connecting portion 201s, a zoom operation ring 202, a lens control unit (CPU) 210, an optical system 220, and an optical system driving unit 230. The optical system 220 includes an aperture mechanism (aperture unit, aperture) 251 including aperture blades.
The zoom operation ring 202 is an annular operation reception unit that is rotatably disposed in the casing of the interchangeable lens 200 in order to change the focal length. That is, when the user operates (rotates) the zoom operation ring 202, the position of the zoom lens in the optical system 220 in the optical system 220 moves in accordance with the operation, and the focal length (zoom in accordance with the movement). State) changes.

The lens control unit 210 stores the image plane movement coefficient k in a nonvolatile memory provided therein. This “image plane movement coefficient” is unique information stored for each interchangeable lens 200, and is “a movement amount D of the focus lens 222 (FIG. 3) and a subject image that is displaced according to the movement amount”. Information k (= d / D) indicating the relationship with the amount of movement of the imaging position (the amount of change in the imaging position, the amount of movement of the image plane) d, which is well-known information. The lens control unit 210 stores a plurality (k1 to kn) of information on the image plane movement coefficient k for each focal length.
The lens control unit 210 can transmit the image plane movement coefficient k to the adapter 300. The image plane movement coefficient k can also be transmitted to the camera body 100 via the adapter 300. That is, in the interchangeable lens 200, the lens control unit 210 transmits the image plane movement coefficient k corresponding to the focal length set at the time of transmission to the adapter 300 and the camera body 100.
Note that the image plane movement coefficient k is “focus drive command 1” (first command information) generated by the camera body 100 and “focus drive command 2” generated by the adapter 300 in response to the focus drive command 1. "(Second command information) is used at each generation.
Information transmission processing of the image plane movement coefficient k from the interchangeable lens 200 to the adapter 300 and information reception processing of the focus drive command 2 transmitted from the adapter 300 are performed by the above-described “command data communication”. That is, the transmission and reception processing of these information is performed by the first lens communication unit 212 (FIG. 3).
The lens control unit 210 performs a conversion operation for converting the drive command value into a drive amount (rotation speed) of the AF drive unit 231 (motor or the like) based on the focus drive command 2 received from the adapter 300. The lens control unit 210 drives the AF driving unit 231 with the driving amount obtained by the conversion calculation.

The optical system drive unit 230 includes an AF drive unit 231 (FIG. 3) and an AF encoder 232 (FIG. 3).
The AF driving unit 231 is configured to move the focus lens 222 (in the direction specified in the focus control command) either before or after in the optical axis direction based on the control (converted driving amount) of the lens control unit 210 as described above. 3) is driven.
The AF encoder 232 supplies a pulse signal to the lens control unit 210 as the focus lens 222 moves. The AF encoder 232 has two different modes depending on the specifications of the encoder included in the AF encoder 232. Whether the AF encoder 232 is in one of the two modes can be identified by the lens type information (type information) of the interchangeable lens 200.
For example, the AF encoder 232 according to one aspect includes a single-phase pulse encoder. When the AF encoder 232 includes a single-phase pulse encoder, the AF encoder 232 outputs a single-phase pulse signal as the focus lens 222 moves. This pulse signal becomes information indicating the movement amount (position information) of the focus lens.
However, the movement direction of the focus lens 222 cannot be detected from the signal output from the one-phase pulse encoder.

The AF encoder 232 according to the other aspect includes a two-phase pulse encoder. When the AF encoder 232 includes a two-phase pulse encoder, the AF encoder 232 outputs a two-phase pulse signal whose phases are shifted by 90 degrees as the focus lens 222 moves. This two-phase pulse signal is information indicating the amount and direction of movement of the focus lens (in other words, position information of the focus lens 222).
As described above, the pulse signal (one-phase pulse signal or two-phase pulse signal) generated by the AF encoder 232 is hot in the data communication system D2L (FIG. 3) via the second lens communication unit 213 (FIG. 3). It is transmitted to the adapter 300 by line communication.

(Adapter configuration)
The adapter 300 includes a first mount 301 including a connection portion 301s, a second mount 302 including a connection portion 302s, an adapter control unit (CPU) 310, and an aperture interlocking lever driving unit 330.
The adapter control unit (CPU) 310 includes a first adapter communication unit 312 (FIG. 3), a second adapter communication unit 313 (FIG. 3), and an aperture control unit 314 (FIG. 3).
As described above, the first adapter communication unit 312 communicates with the first camera communication unit 112 of the camera body 100 (first communication standard), and the first lens communication unit 212 of the interchangeable lens 200. Command data communication based on communication (second communication standard). Through this command data communication, the first adapter communication unit 312 acquires information on the image plane movement coefficient defined in the second communication standard from the interchangeable lens 200. The acquired image plane movement coefficient information is stored in a nonvolatile memory in the adapter control unit 310. Then, the first adapter communication unit 312 converts the image plane movement coefficient information into information (state) that conforms to the first communication standard and transmits the information to the first camera communication unit 112. This conversion process is performed by using a predetermined conversion formula determined in advance in the adapter control unit 310 for each object to be communicated (each information to be communicated, in other words, each type of information to be communicated).
The first adapter communication unit 312 receives the above-described “focus drive command 1” (first command information) output from the first camera communication unit 112, and receives the received focus drive command 1 as the second Is converted into “focus drive command 2” (second command information) conforming to the communication standard of the first lens, and transmitted to the first lens communication unit 212.
Here, a process performed by the adapter control unit 310 for converting the focus drive command 1 into the focus drive command 2 will be described in detail. The focus drive command 1 (first command information) includes information indicating the drive direction of the focus lens 222 (either forward or rearward of the optical axis) and drive amount information. The drive amount information included in the focus drive command 1 is the number of pulses that is synonymous with the drive amount for the AF drive unit (motor) of the interchangeable lens 200A (FIG. 7) having the same lens mount as the camera body 100. Information. On the other hand, the focus drive command 2 that can be received by the interchangeable lens 200, which differs from the camera body 100 in terms of mount specifications and communication standards, represents the drive amount of the focus lens 222 as an image plane movement amount (not the number of pulses). It includes information and information on the driving direction. Therefore, the adapter control unit 310 converts the “number of pulses” expressed by the focus drive command 1 into “image plane movement amount (change amount of image formation position)” (conversion calculation), and A process of converting the information indicating the driving direction into information conforming to the second communication standard is performed. When the adapter controller 310 performs a conversion operation to convert the number of pulses into the image plane movement amount, the image plane movement coefficient stored in the nonvolatile memory in the adapter controller 310 as described above is used. Information (the information on the image plane movement coefficient acquired from the interchangeable lens as described above / communication standard is different, but the information standard is the same as the information transmitted to the camera body 100). .

  On the other hand, as described above, the second adapter communication unit 313 communicates with the second camera communication unit 113 of the camera body 100 (third communication standard) and the second lens communication unit of the interchangeable lens 200. The hot line communication is performed with the communication with the H.213 (the fourth communication standard). Through this hotline communication, the second adapter communication unit 313 receives from the AF encoder 232 regarding the position of the focus lens 222 from the interchangeable lens 200 via the data communication system D2L defined in the above-described fourth communication standard. The pulse signal (hot line pulse signal) is received. The second adapter communication unit 313 counts the number of pulses of the received hotline pulse signal. The second adapter communication unit 313 generates position information (serial communication data, hereinafter referred to as “generation position information”) indicating the position of the focus lens 222 based on the received (counted) pulse signal (in other words, the generation position information). For example, the pulse signal is converted into position data). The position information generated here is information conforming to the third communication standard. Then, the generated generation position information is transmitted to the camera body 100.

Further, the processing operation of the second adapter communication unit 313 is variously controlled by a control signal supplied from the first adapter communication unit 312. For example, the control signal supplied from the first adapter communication unit 312 includes type information indicating the type of the interchangeable lens 200 (hereinafter referred to as “lens type information”), information indicating the operation mode of the camera body 100, and the camera body 100. There is information indicating the operating state of the. The processing operation of the second adapter communication unit 313 controlled according to these control signals includes processing for counting the number of pulses of the hotline pulse signal and processing for changing the transmission state of the generated position information.
For example, the second adapter communication unit 313 changes the processing for counting the number of pulses of the hotline pulse signal according to the lens type information. Further, the second adapter communication unit 313 changes the sending process for sending the generated position information of the focus lens 222 to the camera body 100 according to the lens type information. In this way, by changing the processing related to hotline communication in the adapter 300 according to the lens type, the adapter controller 310 is useless even if an interchangeable lens that does not require hotline communication is attached to the adapter 300. (Preparation operations such as a pulse signal counting operation described later, a conversion operation for generating position information, a transmission operation for the generated position information, and various setting operations in the second adapter communication unit 313 for performing these operations) It can be prevented in advance. For this reason, in this embodiment, as will be described later with reference to FIG. 21, the processing related to hot line setting (steps S2154b and S3154b) is performed after the lens information acquisition operation (steps S2154a and S3154a). ing. In this way, after determining whether or not it is an interchangeable lens that should be set for hotline, and how it should be set if it is a lens that should be set for hotline, This makes it possible to set up an efficient hotline suitable for the interchangeable lens that is installed.

On the other hand, the “processing” changed according to the information indicating the operation mode of the camera body 100 or the information indicating the operation state of the camera body 100 includes a process for counting the number of pulses of the hotline pulse signal and the generated focus. A process for changing the transmission state of the position information of the lens 222 (optical system) is included.
The second adapter communication unit 313 controls the execution of the process of counting the number of pulses of the hotline pulse signal according to information indicating the operation mode of the camera body 100 or information indicating the operation state of the camera body 100. .
The second adapter communication unit 313 sends information indicating the operation mode of the camera body 100 or the operation state of the camera body 100 in the sending process of sending the generated position information of the focus lens 222 (optical system) to the camera body 100. It is controlled according to the information shown.
Details of each process changed according to each of the above conditions will be described later.

The first adapter communication unit 312 converts the lens type information acquired from the interchangeable lens 200 into information (state) that conforms to the first communication standard, and transmits the information to the camera body 100.
The first adapter communication unit 312 transmits control information (control command) for performing autofocus control (processing), such as the focus drive command 2 described above, to the interchangeable lens 200. The control command sent from the first adapter communication unit 312 to the interchangeable lens 200 includes a control command for executing or stopping the autofocus process.
The first adapter communication unit 312 sends a control command for executing or stopping the autofocus process to the interchangeable lens 200. The first adapter communication unit 312 performs autofocus processing in response to the operation mode of the camera body 100 transitioning to a state in which autofocus processing is performed (for example, the release button 132 (see FIG. 1) is pressed halfway). Is sent to the interchangeable lens 200.
Further, the control command transmitted from the first adapter communication unit 312 to the interchangeable lens 200 includes a control command for sending or stopping the position information (one-phase or two-phase pulse signal) of the focus lens 222. For example, if the operation mode of the camera body 100 is set to the manual focus mode, the first adapter communication unit 312 causes the interchangeable lens 200 to output a one-phase or two-phase pulse signal from the encoder 232 to the adapter 300. A control command for prohibiting this is output. When receiving a control command indicating such prohibition, the lens control unit 210 controls the pulse signal line of the encoder 232 to be set to high impedance so that the one-phase or two-phase pulse signal cannot be output, for example. .

  The first adapter communication unit 312 receives lens information (described later) stored in the storage area of the interchangeable lens 200 (nonvolatile memory of the lens control unit 210) from the interchangeable lens 200, and then receives one phase or two phases. The second adapter communication unit 313 is controlled to send position information (described later) generated from the pulse signal to the camera body 100. Also, the first adapter communication unit 312 controls the second adapter communication unit 313 so as to send position information generated from the one-phase or two-phase pulse signal to the camera body 100 under the control of the camera body 100 (FIG. 22). Will be described later).

  The first adapter communication unit 312 sends a control command for executing the autofocus process to the interchangeable lens 200, and then counts a pulse signal generated according to the movement of the focus lens 222 by the autofocus process based on the control command. You may control to make the 2nd adapter communication part 313 perform a process.

(Configuration of camera body)
The camera body 100 includes a camera body side mount 101 including a connection unit 101s, a shutter 102, a signal processing unit 103, an AF sensor 106, a camera control unit (CPU) 110, an operation receiving unit 130, an image processing unit 140, a display unit 150, A storage unit 160, a buffer memory unit 170, and a medium control unit 180 are provided.

  The camera control unit 110 controls each unit via the bus 199. A bus 199 connects each unit and transfers image data, control signals, and the like output from each unit.

  The shutter 102 passes or blocks (passes to the signal processing unit 103 side) the subject luminous flux that reaches the camera body 100 from the interchangeable lens 200 (optical system 200) through the adapter 300. Regulation).

  The signal processing unit 103 includes, for example, an image sensor 104 such as a CMOS and an AD conversion unit 105, and generates image data based on an optical image formed by a subject light beam. For example, the imaging element 104 converts an optical image formed on the light receiving surface (imaging surface) into an electrical signal and outputs the electrical signal to the AD conversion unit 105. The AD conversion unit 105 converts the electrical signal output from the image sensor 104 into a digital signal and outputs the digital signal to the buffer memory unit 170.

The AF sensor 106 is a sensor that detects a phase difference in an optical image reaching the camera body 100 from the interchangeable lens 200 (optical system 200) via the adapter 300. An optical image reaching the camera body 100 from the interchangeable lens 200 (optical system 200) via the adapter 300 reaches the AF sensor 106 via a half mirror (not shown), for example, and a phase difference is detected. . The detection value of the AF sensor 106 is set to a position where the camera control unit 110 performs autofocus (determination method based on phase difference) in-focus, and the focus lens 222 (AF lens) in the interchangeable lens 200 is in a focused state. This is used for detecting the amount of movement (defocus amount) to be moved.
In FIG. 17, the AF sensor 106 and the image sensor 104 are separated, but the AF sensor 106 and the image sensor 104 are integrated (for example, a part of the image sensor 104 is also used for the AF sensor 106. ) As an example, the AF sensor 106 may be configured to calculate a contrast evaluation value based on the output (image signal) of the image sensor 104 and perform a known contrast AF that performs AF based on the contrast evaluation value. . Alternatively, for example, an image pickup device in which a part of pixels of the image pickup device 104 is replaced with a phase difference detection device (in place of the image signal device), which is well known in Japanese Patent Application Laid-Open No. 2009-94881, for example, is used. The phase difference AF may be performed based on the output of the phase difference detection element. When integrated, a half mirror is not required.

The operation reception unit 130 receives an instruction operation from the user. The operation accepting unit 130 includes a power button 131 (see FIG. 1), a release button 132 (see FIG. 1), and a rear operation unit 133 (see FIG. 1). ) Operation information (operation input) and operation information by pressing an icon, a selection item, an OK button or the like on the operation screen displayed on the display unit 150 are received. The operation reception unit 130 outputs the received operation information to the camera control unit 110.
The release button 132 detects a user operation, and supplies a state signal indicating two states of a half-pressed state and a fully-pressed state by the detected operation to the camera control unit 110.
The back operation unit 133 detects a user operation, detects information for performing various settings by the detected operation, and supplies the detected information to the camera control unit 110.

  The display unit 150 is, for example, a liquid crystal display disposed on the back surface of the housing (on the opposite side of the adapter 300 in the perspective view of FIG. 1). The display unit 150 displays various information (for example, image data, operation screens, etc.).

  The storage unit 160 is an area for storing various information (for example, reference information and generation information). Specifically, the storage unit 160 stores various mode selection / restriction conditions, focus determination criteria, imaging conditions (for example, a program diagram), image processing conditions, display control conditions, image data, and the like. .

  The buffer memory unit 170 is an area for temporarily storing the digital signal output from the signal processing unit 103 (AD conversion unit 105).

  The image processing unit 140 generates image data from the digital signal stored in the buffer memory unit 170. The image data generated by the image processing unit 140 is continuously obtained in a state where the imaging instruction is not received in addition to the captured image data generated when the imaging instruction is received via the operation receiving unit 130. Through image data (hereinafter also referred to as a through image) is also included.

  Note that the captured image data generated by the image processing unit 140 is stored in the storage unit 160 or the storage medium 400. Further, the through image generated by the image processing unit 140 is output to the display unit 150. The through image generated by the image processing unit 140 is used for focusing determination in autofocus (for example, a determination method based on a contrast method) by the camera control unit 110.

  In addition, the image processing unit 140 performs image processing on the captured image data stored in the storage unit 160 based on the image processing conditions stored in the storage unit 160.

  The medium control unit 180 writes information (for example, captured image data) to a removable storage medium 400 (for example, a memory card), reads information from the storage medium 400, or is stored in the storage medium 400. Controls erasure of information.

  The storage medium 400 is an external storage unit that is detachably connected to the camera body 100. For example, photographed image data is stored in the storage medium 400.

In FIG. 17, the camera system 1 shown in FIG. 3 is described, but the functions of the camera body 100 constituting the camera system 1B shown in FIG. 5 and the camera system 1C shown in FIG. The functions of the camera body 100 constituting the same are the same as the functions of the camera body 100 shown in FIG.
However, since the interchangeable lens 200B connected via the adapter 300 is a non-CPU lens, in the case of the configuration of the camera system 1B, some of the functions of the camera body 100 (for example, functions related to autofocus) are limited ( Disabled).

Further, FIG. 17 illustrates a case where the interchangeable lens 200 is connected to the camera body 100 via the adapter 300, but as shown in FIG. 7, a standard-compliant lens (for example, the interchangeable lens 200A). In this case, the camera body 100 can be directly connected without using the adapter 300.
When a standard conforming lens (for example, interchangeable lens 200A) is used, and when an interchangeable lens that does not correspond to the standard conforming lens (for example, interchangeable lenses 200, 200B, 200C, hereinafter referred to as a non-standard conforming lens) is used. The processing of the camera body 100 (camera control unit 110) may be different. For example, in the case of the camera system 1 (FIG. 3), the camera system 1B (FIG. 5) or the camera system 1C (FIG. 6) and the case of the camera system 1A (FIG. 7), the camera body 100 (camera control unit 110). The processing of is different.

Further, the camera control unit 110 detects the state signal of the release button 132 supplied from the operation receiving unit 130, and detects the release button half-pressed state and the release button full-pressed state. For example, the release button half-pressed state indicates a preparation state in which imaging is performed, and the release button fully-pressed state indicates imaging start.
When the camera control unit 110 detects the half-pressed state of the release button from the state signal supplied from the release button 132, the camera control unit 110 changes the operation state (operation mode) to the state in which autofocus control (autofocus processing) is performed To.
In performing the autofocus control, the camera control unit 110 first sets the above-described image plane movement coefficient k from the interchangeable lens 200 via the adapter 300 by the above-described hotline data communication (communication systems D1L and D1b). Information (image plane movement coefficient information converted into information (state) conforming to the first communication standard by the adapter 300 as described above) is received. In the camera control unit 110, a focus shift amount calculated based on an output from the above-described AF sensor 106 (including a case where the image sensor 104 is integrated) (in the case of phase difference AF, a defocus amount, a contrast AF). In this case, the above-described focus drive command 1 (first command information) is generated based on the contrast value. The camera control unit 110 uses the image plane movement coefficient k received from the interchangeable lens 200 when generating the focus drive command 1 (number of pulses, drive direction). More specifically, the image plane movement coefficient k is used for calculation when converting the amount of focus deviation into the number of pulses.
The information on the image plane movement coefficient k is initially received by the camera body 100 by the first exchange (communication) between the “interchangeable lens 200-adapter 300-camera body 100” and stored in the memory in the camera control unit. . After that (when the camera is powered on), the camera body 100 receives the data through regular communication (periodic communication) between the “interchangeable lens 200-adapter 300-camera body 100”. The camera control unit 110 updates and stores the image plane movement coefficient k in the memory every time information on the image plane movement coefficient k is received by steady communication. For this reason, when generating the focus drive command 1, the camera control unit 110 performs the generation using the image plane movement coefficient k updated at that time. This point (the point at which the updated image plane movement coefficient k is used for the conversion calculation) is the same in the case of the conversion calculation (conversion calculation using the image plane movement coefficient k) performed by the adapter control unit 310 described above. is there.

Then, the camera control unit 110 sends the focus drive command 1 to the first data communication system D1b (in order to cause the AF drive unit 231 of the optical system drive unit 230 to perform autofocus processing based on the generated focus drive command 1. To the adapter 300 via command data communication).
Upon receiving this focus drive command 1, the adapter control unit 310 causes the first adapter communication unit 312 to perform autofocus processing (generation of the focus drive command 2 described above, etc.). In addition, the camera control unit 110 performs autofocus processing (output from the AF encoder 232 of the interchangeable lens 200) to the second adapter communication unit 313 via the first adapter communication unit 312 according to the control command sent to the first adapter communication unit 312. (Processing for generating position information from the pulse signal thus generated).

  Alternatively, when the release of the release button half-pressed state is detected from the state signal supplied from the release button 132, the camera control unit 110 sets the operation state (operation mode) to a state where the autofocus process is completed. In the control for completing the autofocus process, a control command from the camera control unit 110 is sent to each control target controlled to perform the autofocus process, as in the start of the autofocus process.

Alternatively, when the camera control unit 110 detects the release button full-pressed state based on the state signal supplied from the release button 132, the camera control unit 110 enters a state in which imaging processing is performed. In a state where the imaging process is performed, the camera control unit 110 controls each unit so as to hold the result of the autofocus process.
In this way, the autofocus process is performed in the camera system 1.

Here, the process of transmitting the lens operation of the focus lens 222 of the interchangeable lens 200 to the camera body 100 by hotline communication will be described in more detail.
<Description of hotline communication>
As described above, “hot line communication” in the present embodiment indicates communication from the interchangeable lens 200 to the camera body 100 via the adapter 300. In the hotline communication, the third communication is performed between the “second data communication system D2b” that performs communication according to the third communication standard between the adapter 300 and the camera body 100, and between the interchangeable lens 200 and the adapter 300. The “data communication system D2L” performs communication according to a fourth communication standard different from the standard.

(Hot line communication of the second data communication system D2b)
The first adapter communication unit 312 controls the second adapter communication unit 313 to transmit lens position data to the second camera communication unit 113 via the terminals Tb8 to Tb11, that is, the signal lines HREQ, HANS, HCLK, and HDAT. Send. Hereinafter, details of communication performed between the second adapter communication unit 313 and the second camera communication unit 113 will be described.

  In the present embodiment, communication performed between the second adapter communication unit 313 and the second camera communication unit 113 is referred to as “hot line communication of the second data communication system D2b”.

  FIG. 18 is a timing chart showing an example of hot line communication of the second data communication system D2b. The second camera communication unit 113 of the present embodiment is configured to start hot line communication of the second data communication system D2b every predetermined cycle (for example, 1 millisecond in the present embodiment). This cycle is shorter than the cycle in which command data communication is performed by the first data communication system D1b. FIG. 18A is a diagram illustrating a state in which the hot line communication of the second data communication system D2b is repeatedly performed every predetermined period Th. FIG. 18B shows a state in which a certain communication period Tx is expanded in the hot line communication of the second data communication system D2b that is repeatedly executed. Hereinafter, the procedure of hot line communication of the second data communication system D2b will be described based on the timing chart of FIG.

  The second camera communication unit 113 first outputs an L level signal from the contact Ta8 at the start of hot line communication of the second data communication system D2b (T6). That is, the signal level of the signal line HREQ is set to L level. When the second adapter communication unit 313 detects that this signal is input to the terminal Tb8, the second adapter communication unit 313 starts executing the generation process 501 that generates the generation position information. The generation process 501 is a process in which the second adapter communication unit 313 detects the result of counting the hot line pulses supplied from the interchangeable lens 200 and generates the generated position information indicating the position of the focus lens 222 representing the detection result. is there.

  When the second adapter communication unit 313 completes the execution of the generation process 501, the second adapter communication unit 313 outputs an L level signal from the terminal Tb9 (T7). That is, the signal level of the signal line HANS is set to the L level. The second camera communication unit 113 outputs a clock signal 502 from the terminal Ta10 in response to the input of this signal to the terminal Ta9. That is, the clock signal 502 is transmitted to the second adapter communication unit 313 via the signal line HCLK.

  The second adapter communication unit 313 outputs the generation position information (generation position information 503) of the focus lens 222 from the terminal Tb11 in synchronization with the clock signal 502. That is, the generated position information 503 is transmitted to the second camera communication unit 113 via the signal line HDAT. Details of the generation method of the generation position information will be described later with reference to FIGS.

  When the transmission of the generated position information 503 is completed, the second adapter communication unit 313 outputs an H level signal from the terminal Tb9. That is, the signal level of the signal line HANS is set to the H level (T8). The second camera communication unit 113 outputs an H level signal from the terminal Tb8 in response to the input of this signal to the terminal Ta9. That is, the signal level of the signal line HREQ is set to H level (T9).

  The communication performed from time T6 to time T9 described above is one hot line communication of the second data communication system D2b. As described above, in one hot line communication of the second data communication system D2b, one lens position data signal is transmitted by the second adapter communication unit 313. Terminals Tb8, Tb9, Ta8, and Ta9 used for hotline communication are contacts through which asynchronous signals that are not synchronized with other clock signals are transmitted. That is, the terminals Tb8 and Ta8 are contacts for transmitting asynchronous signals (signal level HREQ signal level / H (High) level or L (Low) level), and the terminals Tb9 and Ta9 are asynchronous signals (signal line HANS). Signal level / H (High) level or L (Low) level).

  Note that the command data communication and the hotline communication can be executed simultaneously or partially in parallel. That is, one of the first adapter communication unit 312 and the second adapter communication unit 313 can communicate with the camera body 100 even when the other is communicating with the camera body 100.

As described above, the second adapter communication unit 313 sends the position information generated based on the hotline pulse signal to the camera body 100 by serial communication.
In addition, the second adapter communication unit 313 sends the position information generated based on the hotline pulse signal to the camera body 100 by serial communication synchronized with the communication request timing supplied from the camera body 100.

(Hotline communication of data communication system D2L and generation method of generation position information in adapter control unit 310)
Next, the hot line communication (hot line pulse communication) processing of the data communication system D2L will be described in detail with reference to FIGS.
FIG. 19 is a timing chart of each signal when the AF encoder provided in the interchangeable lens is a two-phase type (in other words, in the case of the first type interchangeable lens). The horizontal axis is a time axis indicating the passage of time.
FIG. 19A shows the moving direction of the focus lens 222 instructed from the camera control unit 110. As shown in the figure, when the signal is at the H (high) level, the control command to move in the first direction is output, and when the signal is at the L (low) level, it is opposite to the first direction. This shows a state in which a control command for moving in the second direction, i.e., is output.
FIGS. 19B-1 and 19B-2 show two-phase signals output from the AF encoder 232.
FIG. 19C shows the moving direction detected from the two-phase signal output from the AF encoder 232. As shown in the figure, when the signal is at the H (high) level, the detection result when the signal is moving in the first direction is shown. When the signal is at the L (low) level, the direction opposite to the first direction is shown. The detection result of the state which is moving to the 2nd direction which is is shown.
FIG. 19D shows the result of counting pulses based on the two-phase signal output from the AF encoder 232.

Further, the period from time ti to t (i + m) on the time axis shown in FIG. 19 indicates a period in which 1 is added to the count result every time a pulse is detected. In addition, from time tj to t (j + n) on the time axis indicates a period in which 1 is subtracted from the count result every time a pulse is detected.
In order to extract information indicating the “movement direction” from the signal output from the two-phase encoder, it can be determined from the phase relationship between the two signals. In the case of a two-phase encoder, it is known that the moving direction can be detected by determining whether one of the two signals is used as a reference and the phase of the other signal is advanced by 90 ° or delayed by 90 °. Therefore, in the case of a two-phase signal output type interchangeable lens, the second adapter communication unit 313 can generate the generation position information based only on the hot line pulse signal based on the two-phase signal.
For example, in the process of counting the hot line pulse signal, the second adapter communication unit 313 determines addition / subtraction according to the moving direction of the focus lens 222 detected based on the hot line pulse signal. The second adapter communication unit 313 can perform addition / subtraction of the process of counting the hot line pulse signal according to the moving direction of the focus lens 222 detected based on the hot line pulse signal.
With this configuration, when the lens type information state indicates the second state (two-phase), the second adapter communication unit 313 generates the position information (of the focus lens 222 based on only the hotline pulse signal). Information indicating the moving direction and moving amount).
The adapter controller 200 can obtain the position of the focus lens 222 at that time from the counting result by sequentially detecting the input hotline pulses.

On the other hand, FIG. 20 is a timing chart of each signal when the AF encoder provided in the interchangeable lens is a single-phase type (in other words, in the case of the second type interchangeable lens). The horizontal axis is a time axis indicating the passage of time.
FIG. 20A shows the moving direction of the focus lens 222 instructed from the camera control unit 110. As shown in the figure, when the signal is at the H (high) level, the control command (focus drive command 1) for moving in the first direction is output, and when the signal is at the L (low) level, A state in which a control command (focus drive command 1) for moving in a second direction that is opposite to the first direction is output is shown.
FIGS. 20B-1 and 20B-2 show signals (one-phase signals) output from the AF encoder 232. Unlike the two-phase type encoder, the single-phase type AF encoder 232 outputs a pulse to only one signal (see FIG. 20B-1).
FIG. 20C shows the result of counting pulses based on the one-phase signal output from the AF encoder 232.

In this case, the 2nd adapter communication part 313 produces | generates positional information based on the hotline pulse signal by a one-phase signal. However, there is no way of knowing the moving direction of the focus lens 222 only with the hotline pulse signal output from the interchangeable lens. Therefore, the second adapter communication unit 313 determines the addition or subtraction of the process of counting the hot line pulse signal according to the movement direction control information for moving the focus lens 222 in the process of counting the hot line pulse signal.
For the information indicating the actual moving direction of the focus lens 222, the driving direction command information included in the focus driving command 1 generated by the camera control unit 110 is used instead.
With this configuration, when the state of the lens type information indicates the first state (one phase), the second adapter communication unit 313 is configured to display the drive direction command information included in the focus drive command 1 and Based on the position information generated based on the hotline pulse signal output from the interchangeable lens 200, generated position information (indicating the moving direction and moving amount of the focus lens 222) is generated.
As described above, the second adapter communication unit 313 can generate a process of sending the generation position information generated based on the hotline pulse signal to the camera body 100 according to the lens type information.
As a result, the second adapter communication unit 313 can detect the position of the focus lens 222 based on the hotline pulse signal by changing the process of generating the generation position information according to the lens type information.
Further, the second adapter communication unit 313 may execute a process of sending the generated position information generated based on the hotline pulse signal output from the interchangeable lens 200 to the camera body 100 according to the lens type information. .
Further, the second adapter communication unit 313 may stop the process of sending the generated position information generated based on the hotline pulse signal output from the interchangeable lens 200 to the camera body 100 according to the lens type information. .
The lens type information can be acquired by the first adapter communication unit 312 from the interchangeable lens 200 through command data communication. The first adapter communication unit 312 converts the acquired lens type information into a state that conforms to the first communication standard, and then transmits it to the camera body 100 by command data communication.

(Details of initialization processing in lens startup processing)
First, the processes after the lens initialization process (step S150) in the lens activation process described with reference to FIGS.
FIG. 21 is a diagram illustrating an example of a processing sequence of an initialization process in the lens activation process. In FIG. 21, processes corresponding to the processes in FIGS. 12 and 13 are assigned the same reference numerals, and descriptions thereof are omitted.

  After supplying the power of the power system power supply PWR (step S1130), the first camera communication unit 112 transmits an initialization execution command to the first adapter communication unit 312 as an initialization request (step S1140). Thereafter, the first camera communication unit 112 sends an initialization completion confirmation command (steps S1145a, S1145b, S1145c,...) For detecting the completion of the initialization process by the adapter 300 to the first adapter communication unit 312. It transmits repeatedly and waits for the response of "initialization completion" from the 1st adapter communication part 312 (step S1145).

  In FIG. 21, the first camera communication unit 112 acquires a “initialization complete” response from the response result to the initialization completion confirmation command in step S1145n.

  When the initialization execution command is received by the first adapter communication unit 312, the adapter control unit 310 performs an initialization process for each unit included in the adapter 300 (step S 2130). Next, the adapter control unit 310 controls the aperture interlocking lever driving unit 330 to move the aperture interlocking lever 350 to the retracted position (step S2135).

  Subsequently, the adapter control unit 310 advances the process to the lens attachment determination process (step S140). In this lens mounting determination process, when there is a response from the first lens communication unit 212, the first adapter communication unit 312 determines that the interchangeable lens 200 is mounted on the adapter 300 and replaces it with the adapter 300. Information exchange communication is performed with the lens 200 (steps S2146 and S3146).

In the information exchange communication between the adapter 300 and the interchangeable lens 200, for example, the first adapter communication unit 312 and the first lens communication unit 212 communicate with each other to identify each other, and thus perform normal operation. Check whether communication is possible. In addition, the first adapter communication unit 312 indicates the lens information for identifying the type of the interchangeable lens 200 and the state of the lens switch provided in the interchangeable lens 200 (for example, a switch for switching between AF mode and MF (Manual Focus) mode). The information shown is acquired.
For example, when the first adapter communication unit 312 (relay processing unit) cannot acquire the lens type information acquired from the interchangeable lens 200, the interchangeable lens 200 is not attached to the adapter 300 (the lens is not attached). You may determine as.
In addition, the first adapter communication unit 312 has a specification in which the interchangeable lens 200 cannot communicate with the adapter 300 when the lens type information cannot be acquired while determining that the interchangeable lens 200 is attached. You may determine that there is.
The first lens communication unit 212 transmits a lens drive system power supply Vp request signal to the first adapter communication unit 312. Then, the adapter controller 310 advances the process to the lens initialization process (step S150).

  In the lens initialization process (step S150), when the first adapter communication unit 312 receives the lens drive system power supply Vp request signal, the adapter control unit 310 first converts the power of the lens drive system power supply Vp to the adapter power supply unit 320. And is supplied (powered) to the interchangeable lens 200 (step S2152).

Next, the first adapter communication unit 312 transmits a lens initialization execution command (multi-function lens initialization request) requesting execution of the lens initialization process to the first lens communication unit 212, and the lens control unit 210. The lens initialization process is executed between them (steps S2154 and S3154).
For example, the first adapter communication unit 312 transmits a lens information acquisition request command requesting execution of the lens information acquisition response process to the first lens communication unit 212 and then receives response information from the first lens communication unit 212. (Step S2154a). When the lens information acquisition request command is received by the first lens communication unit 212, the lens control unit 210 executes a lens information acquisition response process in response to the lens information acquisition request command from the first adapter communication unit 312. Response information for the one-adapter communication unit 312 is transmitted (step S3154a). The lens information acquisition response process at this time is the first lens information exchange (communication) between the interchangeable lens 200 and the adapter 300.
This lens information acquisition response processing includes initialization of the lens control unit 210, initialization of autofocus (AF) control (control of the AF lens 222), initialization of image stabilization control (control of the VR lens 223), and the like. In addition to processing, lens information such as lens type information (various lens information stored in the non-volatile memory in the lens control unit 210, in addition to the above-described lens type information, for example, presence / absence of an anti-vibration function, electromagnetic diaphragm And the like, the open F value, the focal length, and the like) are transmitted to the first adapter communication unit 312. In this lens information acquisition response process, the adapter 300 acquires the information on the image plane movement coefficient k described above (the image plane movement coefficient k corresponding to the focal length set at that time) from the interchangeable lens 200. The acquired image plane movement coefficient k is stored in a nonvolatile memory in the adapter control unit 310. The memory for storing the image plane movement coefficient k is not limited to a nonvolatile memory, and may be a volatile memory.

Next, the first adapter communication unit 312 transmits a hot line setting execution command for requesting execution of the hot line setting process to the first lens communication unit 212 (step S2154b). When the first lens communication unit 212 receives a hot line setting execution command, the lens control unit 210 executes hot line setting execution processing in accordance with the hot line setting execution command from the first adapter communication unit 312. (Step S3154b). The hot line setting execution process is a process of outputting a hot line pulse signal from the second lens communication unit 213 after determining the state of each component in the lens control unit 210. By the hot line setting execution processing in step S3154b, the second lens communication unit 213 is controlled to be able to output the hot line pulse signal, and the hot line pulse signal is actually continuously generated according to the movement of the focus lens 222. Output begins. The first adapter communication unit 312 is controlled to execute generation (conversion) processing of lens position data related to the position of the focus lens when receiving the hot line pulse signal from the interchangeable lens 200.
However, if the lens type information cannot be obtained from the lens control unit 210 in step S2154b, the hotline communication to the camera control unit 110 is permitted without notifying the hotline setting execution command by the processing in steps S2154b and S3154b. Set the judgment flag to the disallowed state.

As described above, the lens initialization process includes initialization of the lens control unit 210, initialization of AF control (control of the AF lens 222), initialization of image stabilization control (control of the VR lens 223), and the like. It is processing.
In the case of an electromagnetic diaphragm type CPU lens (see FIG. 6: interchangeable lens 200C), initialization processing of electromagnetic diaphragm control (see FIG. 6: lens control unit 210C) is also executed in this lens initialization process. .
After the lens initialization process is completed, the first adapter communication unit 312 starts regular lens communication with the first lens communication unit 212 (step S2156). This steady communication is performed at a predetermined cycle as described above. Then, the adapter 300 acquires the above-described information of the image plane movement coefficient k (image plane movement coefficient k corresponding to the focal length set at that time) from the interchangeable lens 200 in the steady lens communication. And the 1st adapter communication part 312 updates the memory content of the above-mentioned memory, whenever it acquires the image plane movement coefficient k.

  Next, the adapter control unit 310 executes initialization driving of the aperture interlocking lever 350 (step S2158). For example, the adapter control unit 310 controls the diaphragm interlocking lever driving unit 330 to execute a process of moving the position of the diaphragm interlocking lever 350 to a predetermined initial position. Note that the adapter control unit 310 moves the position of the aperture interlocking lever 350 to a retracted position, an open position, a position stored in the storage unit, or the like according to control conditions, for example.

Subsequently, in response to the completion of the initialization drive of the aperture interlock lever 350 in step S2158, the first adapter communication unit 312 receives an initialization completion confirmation command (step S1145n) from the first camera communication unit 112. In response, “initialization complete” is returned as the initialization state (step S2159).
With this “initialization completion”, the first adapter communication unit 312 relays the lens type information acquired from the interchangeable lens 200 to the camera body 100.
The first camera communication unit 112 acquires a response of “initialization complete” from the response result to the initialization completion confirmation command in step S1145n (step S1150), and ends the initialization.
The second adapter communication unit 313 stops the process of sending the position information generated based on the hotline pulse signal output from the interchangeable lens 200 to the camera body 100 under the control of the first adapter communication unit 312. There is a case.
For example, the second adapter communication unit 313 performs a process of sending the generated position information to the camera body 100 by the control from the first adapter communication unit 312 according to the lens type information obtained from the lens control unit 210 in step S3154a. Stop.

  As described above, the adapter control unit 310 initializes each unit included in the adapter 300, determines whether to install the adapter 300, and attaches to the adapter 300 in accordance with the initialization execution command from the first camera communication unit 112. Initialization of the state of the interchangeable lens 200 being performed can be executed. In addition, the first camera communication unit 112 can detect whether or not the initialization process of the adapter 300 has been completed at a cycle of a time interval that is earlier than the cycle of steady data communication. Therefore, the camera control unit 110 can appropriately detect whether or not the initialization process is completed at an early timing.

The first adapter communication unit 312 receives lens information stored (held) in the storage area of the interchangeable lens 200 (nonvolatile memory in the lens control unit 210) from the interchangeable lens 200 (step S2154a). The second adapter communication unit 313 can be controlled so that the position information generated by the second adapter communication unit 313 (position information generated from one-phase or two-phase pulse signals) is sent to the camera body 100.
The hot line communication and the steady communication are performed by independent communication systems. Also, the communication timing of each communication is set independently.

The first adapter communication unit 312 controls the interchangeable lens 200 so that the pulse signal from the AF encoder 232 is transmitted from the interchangeable lens 200 after the start of power supply to the interchangeable lens 200 (step S2152) (step S8010). To do. The pulse signal output start from the AF encoder 232 is a sequence that is performed after the hot line setting process (the process in step S150) is completed, as is apparent from FIG. As a result, the pulse signals can be counted reliably, and the adapter 300 can generate correct position information of the focus lens 222.
In this way, even during the lens initialization sequence as shown in FIG. 21, if the hotline setting process (the process in step S150) is completed, position information for transmitting the movement amount of the focus lens 222 to the camera body is generated. Since it can be started, the system can perform quick AF activation.
In this way, the first adapter communication unit 312 can send the position information generated by the second adapter communication unit 313 to the camera body 100.

In the process described with reference to FIG. 21 described above, in the lens initialization process (step S150), the first adapter communication unit 312 receives response information for the lens information acquisition request command from the first lens communication unit 212. After the lens information is acquired (step S2154a), a hot line setting execution command is transmitted to the first lens communication unit 212 (step S3154a). The first adapter communication unit 312 as shown in FIG. 21 replaces the process of transmitting the hot line setting execution command to the first lens communication unit 212 during the execution of the lens initialization process (step S150) as follows. It is good also as an easy process (modified example of a process). This “variation of processing” will be described below.
For example, the first adapter communication unit 312 transmits the lens information acquired from the first lens communication unit 212 to the first camera communication unit 112, and then transmits a hotline setting execution command to the first lens communication unit 212. You may make it perform.

  Specifically, in the lens activation process described with reference to FIG. 12, the first adapter communication unit 312 completes the lens initialization process (step S150) (the initialization process of step S130 in FIG. 12 is completed). In addition, the hot line setting execution command may be transmitted to the first lens communication unit 212 after the lens information acquisition process (step S160 in FIG. 12) is completed. When the interchangeable lens 200 receives the hotline setting command from the adapter 300, the interchangeable lens 200 starts outputting the hotline pulse. In other words, the lens information acquisition process (step S160 in FIG. 12) is completed. After that, the output of the hot line pulse signal from the second lens communication unit 213 to the first adapter communication unit 312 is started.

That is, the first adapter communication unit 312 starts receiving the hotline pulse signal from the first lens communication unit 212 after transmitting the lens information acquired from the first lens communication unit 212 to the first camera communication unit 112. Further, the first adapter communication unit 312 starts a lens position data generation process (a process of converting the hot line pulse signal into lens position data) in response to the start of receiving the hot line pulse signal from the interchangeable lens 200.
Then, the first adapter communication unit 312 transmits the lens information acquired from the first lens communication unit 212 to the first camera communication unit 112, and then the position information of the focus lens 222 generated based on the received hotline pulse signal. (Lens position data) is transmitted to the first camera communication unit 112.
Here, for example, the first camera communication unit 112 starts the hot line communication in the lens function start process (step S170 in FIG. 12) after the lens information acquisition process (step S160 in FIG. 12) is completed. Execute hotline communication start processing. After the hotline communication start process, the first adapter communication unit 312 transmits the position information of the focus lens 222 to the first camera communication unit 112 under the control of the first camera communication unit 112. This hotline communication start process will be described later with reference to FIG.

As described above, after the first adapter communication unit 312 transmits the lens information acquired from the interchangeable lens 200 in the lens initialization process to the first camera communication unit 112 after the lens initialization process is completed, a hotline setting execution command is transmitted. Even in the process of transmitting to the first lens communication unit 212, the first adapter communication unit 312 can send the position information generated by the second adapter communication unit 313 to the camera body 100.
In addition, after the lens information acquisition process (step S160 in FIG. 12) is completed, the first adapter communication unit 312 transmits a hotline setting execution command to the first lens communication unit 212. Therefore, the lens of the process illustrated in FIG. Compared with the case of transmitting during the initialization process, the timing at which the output of the hot line pulse signal from the first lens communication unit 212 (the output of the pulse signal from the AF encoder 232) is started can be delayed. . Thereby, the power consumption in the interchangeable lens 200 can be reduced. In addition, since the process for transmitting and receiving the hotline pulse signal is not performed during the period during which the lens initialization process is being performed, the process can be simplified.

The first adapter communication unit 312 transmits the hot line setting execution command to the first lens communication unit 212, not after the lens information acquisition (step S160 in FIG. 12) is completed, but lens initialization. You may perform after the completion of a process (step S150) and before the start of the process of lens information acquisition (step S160 of FIG. 12).
In the above-described embodiment shown in FIG. 21, the adapter 300 transmits a hot line setting effective command to the interchangeable lens 200 during execution of the lens initialization process, and thereby the hot line pulse signal output from the interchangeable lens 200. The process for generating lens position data from is started. However, the adapter 300 receives the hotline pulse signal output from the interchangeable lens 200, but does not execute the lens position data generation process based on the hotline pulse signal until lens information is transmitted to the camera body 100. It is also possible to configure. That is, the adapter 300 outputs a hot line setting effective command to the interchangeable lens 200 during the lens initialization process (step S150 / FIG. 12, FIG. 21). The lens position data conversion (generation) process may be started from the point of step S170 (FIG. 12) without performing the conversion process, as in the above-described “variation of process”. By doing in this way, the processing load of the adapter control part 310 can be reduced, and the power consumption in the adapter 300 can be reduced.

(Hotline communication processing sequence)
With reference to FIG. 22, processing in which the adapter control unit 310 communicates position information detected by the AF encoder 232 of the optical system driving unit 230 to the camera control unit 110 will be described.
FIG. 22 is a diagram illustrating an example of a communication sequence of hotline communication.
The communication sequence shown in FIG. 22 includes hot line communication (second data communication system D2b, D2L) and command data communication (first data communication system D1b, D1L) for controlling hot line communication. It shows. In FIG. 22, a frame indicating processing in hotline communication is indicated by a double line, and a frame indicating processing in command data communication is indicated by a solid line.

  Note that the hot line communication of the second data communication system D2b is communication periodically performed with the cycle Th between the second camera communication unit 113 and the second adapter communication unit 313 (for example, steps S6110 and S6120). , S6130).

  In the hot line communication of the data communication system D2L, the second lens communication unit 213 transmits a hot line pulse (steps S8010: 8010a to S8010e), and the second adapter communication unit 313 transmits the hot line transmitted in step S8010. This is communication for receiving a pulse (steps S7010a to S7010e). As for the hot line pulse transmitted in step S8010, the pulse generated in the interchangeable lens 200 is transmitted as a pulse train.

The hot line communication shown in the present embodiment provides communication for forming a feedback path for feeding back position information of the focus lens 222 that is a control target of autofocus control to the camera control unit 110.
When the position of the focus lens 222 provided in the interchangeable lens 200 is controlled by the control from the camera control unit 110, a feedback path for feeding back the position information of the focus lens 222 to the camera control unit 110 is made available. .

First, the first camera communication unit 112 executes hot line communication start processing for starting hot line communication in order to acquire position information of the focus lens 222 (step S910).
In step S910, the first camera communication unit 112 transmits a hotline communication setting command, which is a communication control command for controlling communication performed by the second adapter communication unit 313, to the first adapter communication unit 312 (step S1910). This hotline communication setting command is sent by command data communication. The hotline communication setting command is, for example, a control command for controlling the second adapter communication unit 313 so as to permit a communication request from the second camera communication unit 113 in hotline communication.

  Next, the first adapter communication unit 312 controls to receive the received hotline communication setting command and perform hotline communication setting. Specifically, the first adapter communication unit 312 controls the second adapter communication unit 313 in accordance with the received hotline communication setting command. By receiving this hotline communication setting command, the first camera communication unit 112 can perform the hotline communication by receiving the control request of the second adapter communication unit 313 and the communication request from the second camera communication unit 113. The state is changed (step S2910). The second adapter communication unit 313 that has been shifted to a state in which hotline communication can be performed in this way is in a state in which position information generated based on the hotline pulse signal can be sent to the camera body 100. That is, the second adapter communication unit 313 is set to a state where the position information can be generated by counting the pulses of the supplied hotline pulse signal.

Subsequently, when the state of the second adapter communication unit 313 is changed to a state in which hot line communication can be performed, the second camera communication unit 113 performs hot communication with the second adapter communication unit 313 according to the cycle Th. Line communication is performed (steps S6010, S6020, S6030).
The second adapter communication unit 313 counts the number of hot line pulse signals sent from the second lens communication unit 213.
In each hotline communication performed according to the cycle Th, for example, as shown in step S6010, the second camera communication unit 113 requests hotline communication from the second adapter communication unit 313, and the second adapter communication unit 313 performs focus. The position information of the lens 222 is received (step S6110).
Further, the second adapter communication unit 313 transmits the generated position information of the focus lens 222 to the second camera communication unit 113 in synchronization with the communication timing requested from the second camera communication unit 113 (step S7110).

  The relationship between step S6110 and step S7110 will be described in detail.

The second camera communication unit 113 and the second adapter communication unit 313 control the signal levels of the signal line HREQ and the signal line HANS, and perform handshake processing for communication control of hot line communication.
The second camera communication unit 113 notifies the second adapter communication unit 313 of a request for the hot line communication (HL data output request) by setting the signal level of the signal line HREQ to the L level at the start of the hot line communication. (Step S6112). When the second adapter communication unit 313 detects a hot line communication request (HL data output request), the second adapter communication unit 313 generates position information of the focus lens 222 in synchronization with the detection of the hot line communication request (HL data output request).
For example, the second adapter communication unit 313 detects the result of the second adapter communication unit 313 counting the number of hot line pulse signals supplied from the interchangeable lens 200. The second adapter communication unit 313 generates position information of the focus lens 222 indicated by the counting result.

  When the generation of the position information of the focus lens 222 is completed, the second adapter communication unit 313 sets the signal level of the signal line HANS to the L level as a response signal to the HL data output request. In response to the detection of the response signal, the second camera communication unit 113 transmits a clock signal to the second adapter communication unit 313 via the signal line HCLK.

The second adapter communication unit 313 transmits position information of the focus lens 222 (HL data transmission) in synchronization with the clock signal (step S7114).
The second camera communication unit 113 receives the position information of the focus lens 222 (receives HL data) (step S6114).

When the transmission of the position information of the focus lens 222 is completed, the second adapter communication unit 313 notifies the second adapter communication unit 313 of the completion of transmission (HL data end notification) (step S7116).
Upon receiving the HL data end notification from the second adapter communication unit 313, the second camera communication unit 113 notifies the second adapter communication unit 313 of a response to the HL data end notification (step S6116).

  Through the processing described above, the second adapter communication unit 313 detects the counted number of hot line pulse signals according to the timing synchronized with the hot line communication timing requested from the second camera communication unit 113. To do. The second adapter communication unit 313 generates the detected number of hot line pulse signals as position information of the focus lens 222. The second adapter communication unit 313 can transmit the generated position information of the focus lens 222 to the second camera communication unit 113.

In addition, the first camera communication unit 112 executes hot line communication stop processing for ending hot line communication in order to end the acquisition of the position information of the focus lens 222 (step S920).
In step S 920, the first camera communication unit 112 transmits a hot line communication prohibition setting command, which is a communication control command for controlling to stop communication performed by the second adapter communication unit 313, to the first adapter communication unit 312. (Step S1920). This hotline communication prohibition setting command is sent by command data communication. For example, the hot line communication prohibition setting command is controlled so as not to permit a communication request from the second camera communication unit 113 in hot line communication and to stop transmission by hot line communication from the second adapter communication unit 313. This is a control command for

  Next, the first adapter communication unit 312 controls to receive the received hotline communication prohibition setting command and stop the hotline communication setting. The first adapter communication unit 312 converts the control information to control the second adapter communication unit 313 according to the received hotline communication prohibition setting command, and controls the second adapter communication unit 313 with the converted control information. By receiving this hotline communication setting command, the first camera communication unit 112 receives the communication request from the second camera communication unit 113 and performs the hotline communication with the control state of the second adapter communication unit 313. A transition is made to a non-existing state (step S2920). The second adapter communication unit 313 that has been shifted to a state in which hot line communication can be performed in this way is in a state in which position information generated based on the hot line pulse signal is not sent to the camera body 100.

Note that according to the present embodiment, the adapter 300 is provided separately from the first mount 301 and the first mount 301 to which the camera body 100 including the AF sensor 106 (focus detection unit) that performs focus detection can be attached and detached. The second mount 302 to which the interchangeable lens 200 having the optical system drive unit 230 (focus adjustment mechanism) for performing focus adjustment is detachable, and the first communication with the camera body 100 attached to the first mount unit 301. An interchangeable lens 200 that is communicable based on the standard and is mounted on the second mount 302 and an adapter control unit 310 that is communicable based on the second communication standard. The adapter control unit 310 receives from the camera body 100 a first control command based on the first communication standard generated by the camera body 100 in accordance with the detection result of the AF sensor 106 (focus detection unit). The adapter control unit 310 converts the first control command into a second control command based on the second communication standard, and sends the second control command to the interchangeable lens 200 attached to the second mount 302. To send.
As described above, when the interchangeable lens 200 is controlled from the camera body 100, the adapter control unit 310 sets the communication standard to each communication standard even when the camera body 100 and the interchangeable lens 200 communicate based on different communication standards. Therefore, various types of interchangeable lenses can function appropriately.

The adapter control unit 310 also moves the focus lens 222 included in the optical system driving unit 220 (focus adjustment mechanism) from the interchangeable lens 200 mounted on the second mount 302, and the focus lens 222 moves only by the movement amount. A storage unit is provided that receives and stores information indicating the relationship with the change amount of the imaging position by the focus lens 222 due to the movement from the interchangeable lens 200.
The adapter control unit 310 converts the stored information into information that conforms to the first communication standard, and transmits the information to the camera body 100 attached to the first mount 301.

Further, the adapter control unit 310 receives the first control command from the camera body 100 after transmitting the stored information to the camera body 100.
Moreover, the adapter control part 310 converts a 1st control command into a 2nd control command based on the memorize | stored information.
The first control command indicates the amount of drive rotation of the AF drive unit 231 (motor) for driving the focus lens 222 included in the optical system drive unit 220 (focus adjustment mechanism). The adapter control unit 310 converts the drive rotation amount into a change amount of the imaging position by a change process using the stored information.

  In addition, after transmitting the second control command to the interchangeable lens 200, the adapter control unit 310 receives a pulse signal (hotline pulse signal) corresponding to the moving state of the focus lens 222 output from the interchangeable lens 200. And count. The adapter control unit 310 generates position information corresponding to the movement state of the focus lens 222 based on the counted pulse signal (hot line pulse signal), and transmits the generated position information to the camera body 100.

  Further, the adapter control unit 310 (second adapter communication unit 313) generates position information of the focus lens 222 based on a pulse signal (hotline pulse signal) indicating the position information of the focus lens 222 included in the interchangeable lens 200. The processing is changed according to lens type information (type information) indicating the type of the interchangeable lens 200 attached to the second mount 302.

  As described above, the second adapter communication unit 313 executes the process of generating the position information based on the hotline pulse signal as the sending process according to the lens type information. Thereby, in the camera system 1, various types of interchangeable lenses can be appropriately functioned.

Further, the second adapter communication unit 313 may detect the position of the focus lens 222 based on a hotline pulse signal supplied from the interchangeable lens 200 according to the lens type information.
For example, when the state of the lens type information indicates the first state (first type, one phase), the second adapter communication unit 313 indicates the direction in which the focus lens 222 is moved included in the first control command. Position information is generated based on the moving direction control information (direction command information) shown and the hotline pulse signal output from the interchangeable lens 200. In this case, the second adapter communication unit 313 determines addition / subtraction according to movement direction control information (direction command information) indicating a direction in which the focus lens 222 is moved in the process of counting the hotline pulse signal.

For example, when the state of the lens type information indicates the second state (second type, two-phase), the second adapter communication unit 313 is positioned based on the hotline pulse signal output from the interchangeable lens 200. Generate information. In this case, in the process of counting the hot line pulse signal, the second adapter communication unit 313 uses movement direction control information (direction command information) indicating the direction in which the focus lens 222 is detected based on the hot line pulse signal. Addition / subtraction is determined accordingly.
As described above, even when the signals output from the interchangeable lens 200 are different, the processing for detecting the position of the focus lens 222 can be changed according to the lens type information. Can function properly.

  In addition, the second adapter communication unit 313 may stop the process of sending the position information generated based on the hotline pulse signal output from the interchangeable lens 200 to the camera body 100 according to the lens type information.

  Furthermore, since the first adapter communication unit 312 relays the lens type information acquired from the interchangeable lens 200 to the camera body 100, the camera control unit 110 can acquire the lens type information, and the acquired lens type information It is possible to select a process according to the process.

The second adapter communication unit 313 stops sending position information when it is determined that the lens type information is not acquired from the interchangeable lens 200 based on the determination according to the lens type information. The two-adapter communication unit 313 can stop sending unnecessary information to the camera control unit 110.
In addition, the second adapter communication unit 313 sends the position information generated based on the hotline pulse signal to the camera body 100 by serial communication.
In addition, the second adapter communication unit 313 sends the position information generated based on the hotline pulse signal to the camera body 100 by serial communication synchronized with the communication request timing supplied from the camera body 100.

With this configuration, information can be efficiently sent from the second adapter communication unit 313 to the camera control unit 110.
As described above, since the process of sending the position information of the focus lens 222 can be changed according to the lens type information, various types of interchangeable lenses can be appropriately functioned.

  Furthermore, according to the present embodiment, the second adapter communication unit 313 performs a process of counting hot line pulses (pulses) indicating the position of the focus lens 222 provided in the interchangeable lens 200. As a result, the hot line pulses (pulses) output from the interchangeable lens can be counted by the adapter 300, and various types of interchangeable lenses can function properly even in a camera body that cannot process the hot line pulses. be able to.

For example, the first adapter communication unit 312 outputs control information indicating a first state in which autofocus processing is performed. For example, the transition to the first state is performed according to the timing when the release button 132 is half-pressed. The first state is maintained while the release button 132 is being pressed halfway. The half-pressed operation state is, in other words, a state in which the operation mode of the camera body 100 performs autofocus processing, in other words, a state in which the focus lens 222 in the interchangeable lens 200 performs a focus adjustment operation. But there is. In the second adapter communication unit 313, execution of the process of counting pulses is controlled by control information indicating the first state. The second adapter communication unit 313 executes processing for counting pulses in the first state.
Further, for example, the first adapter communication unit 312 sends a control command to execute the autofocus process to the interchangeable lens 200. The second adapter communication unit 313 executes a process of counting pulses generated by the movement of the focus lens 222 according to the control command.

When executing the process of counting the pulses, the first adapter communication unit 312 sends a control command to the interchangeable lens 200 to execute the autofocus process in response to the operation mode of the camera body 100 transitioning to the first state. send. The second adapter communication unit 313 starts a process of counting pulses in response to the operation mode of the camera body 100 transitioning to the first state.
Accordingly, the hot line pulses (pulses) output from the interchangeable lens can be counted by the adapter 300, and various types of interchangeable lenses can be appropriately functioned.

Further, when executing the process of counting the pulses, the second adapter communication unit 313 has stopped the autofocus process without holding the result of the autofocus process from the first state of the operation mode of the camera body 100. The number of counted pulse signals may be initialized (reset) in response to transition to a second state (described later).
For example, when initializing the number of counted pulse signals, the second adapter communication unit 313 initializes the number of counted pulses in synchronization with the transition from the first state to the second state.
When initializing the number of counted pulse signals, the second adapter communication unit 313 repeatedly initializes the number of counted pulse signals while in the second state.
The second state is determined according to a state where the half-press operation state of the release button of the camera body 100 is released. In other words, in the above embodiment, the counter that counts the number of pulses is reset in synchronization with the half-press operation of the release button 132 being released. In other words, it synchronizes when the operation mode of the camera body 100 shifts to a state where the autofocus process is not performed. In other words, the focus lens 222 in the interchangeable lens 200 does not continue the focus adjustment operation. The counter is reset in synchronization with the transition (transition).
This resetting operation of the counter not only resets the timing when the half-press operation of the release button 132 is released, but also continues to reset the counter during the period when the half-press operation of the release button 132 is continuously released. You may comprise as follows.
The first state is determined according to a half-pressed state of the release button of the camera body 100. In other words, in the above embodiment, counting of the pulse signal is started in synchronization with the half-pressing operation of the release button 132.

  As a result, when the hot line pulse (pulse) output from the interchangeable lens is counted by the adapter 300, the count value of the pulse can be initialized according to the photographing state, and various types of interchangeable lenses can function appropriately. Can be made.

Furthermore, according to the present embodiment, the first adapter communication unit 312 receives lens information (described later) stored in the storage area of the interchangeable lens 200 (nonvolatile memory in the lens control unit 210) from the interchangeable lens 200. After that, the second adapter communication unit 313 is controlled so as to send the generated position information described above to the camera body 100. In this case, the first adapter communication unit 312 controls the interchangeable lens 200 so that detection position information is sent from the interchangeable lens 200 in response to the start of power supply to the interchangeable lens 200.
In this case, the first adapter communication unit 312 controls the second adapter communication unit 313 so as to send position information to the camera body 100 under the control of the camera body 100.
In this case, the first adapter communication unit 312 causes the interchangeable lens 200 to detect the position of the focus lens 222 and causes the detected position information to be output as a signal from the interchangeable lens 200.
Further, in this case, the first adapter communication unit 312 performs setting to transmit the position information to the camera body 100 under the control from the camera body 100, and controls the second adapter communication unit 313 to transmit the position information. Later, the position of the focus lens 222 is detected by the interchangeable lens 200, the detected position information is output as a signal (pulse signal) from the interchangeable lens 200, and the pulse signal is received from the interchangeable lens 200.
Thereby, various types of interchangeable lenses can be appropriately functioned.

In addition, for example, the first adapter communication unit 312 controls the interchangeable lens 200 so that detection position information is transmitted from the interchangeable lens 200 during the initialization process of the interchangeable lens 200 and the adapter 300.
In this case, the first adapter communication unit 312 sends a control command to execute the autofocus process to the interchangeable lens 200. The second adapter communication unit 313 executes a process of counting pulses generated according to the movement of the focus lens 222 by the autofocus process based on the control command.
Further, in this case, the second adapter communication unit 313 sends the control command for causing the first adapter communication unit 312 to execute the autofocus process to the interchangeable lens 200, and then the focus adapter 222 by the autofocus process based on the control command. The process of counting the pulses generated according to the movement is started.
As described above, the first adapter communication unit 312 controls the interchangeable lens 200 so that the detection position information is transmitted from the interchangeable lens 200 during the initialization process of the interchangeable lens 200 and the adapter 300. The position of the focus lens 222 can be acquired, and various types of interchangeable lenses can function appropriately.

(Control commands for interchangeable lenses with different aperture drive systems)
With reference to the drawings, a description will be given of a driving method of a diaphragm according to each specification of different types of interchangeable lenses.
First, with reference to FIG. 6 and FIG. 11, the aperture control for the electromagnetic aperture type interchangeable lens 200C will be described.
The interchangeable lens 200C includes an aperture driving unit 233C that controls the aperture mechanism 251C.
The adapter 300 performs processing according to the processing sequence illustrated in FIG. 11 when controlling the aperture driving unit 233C. Before performing the processing of the processing sequence shown in FIG. 11, the first adapter communication unit 312 determines that the type of the interchangeable lens is the interchangeable lens 200C according to the lens type information received from the interchangeable lens 200C in advance in the lens initialization process. Assume that the type is determined (recognized).
Based on the determination result, in step S2030 shown in FIG. 11, the first adapter communication unit 312 sends the received lens control command (drive start command) to the first lens communication unit 212.
The first lens communication unit 212 receives a lens control command (drive start command) for controlling the aperture driving unit 233C, and controls the driving of the aperture driving unit 233C to the lens control unit 210C according to the received lens control command. Let

Next, with reference to FIG. 3 and FIG. 23, the diaphragm control for the interchangeable lens 200 incorporating the diaphragm mechanism (unit) 251 provided with the diaphragm blades in conjunction with the diaphragm lever 252 will be described.
FIG. 23 is a diagram illustrating an example of a communication sequence for detecting the driving state of the optical system driving unit.
The communication sequence for detecting the driving state of the optical system driving unit shown in FIG. 23 differs from the processing shown in FIG. 11 in part of the processing. Different processes include step S2030a and step S2040a.
An example of controlling the aperture mechanism 251 of the interchangeable lens 200 will be described as an example, and steps S2030a and S2040a will be described.

The adapter 300 performs processing according to the processing sequence shown in FIG. 23 when controlling the aperture driving unit 233C. Before the processing sequence shown in FIG. 23 is performed, the first adapter communication unit 312 determines that the type of the interchangeable lens is the interchangeable lens 200 according to the lens type information received from the interchangeable lens 200 in advance in the lens initialization processing. Assume that it is determined (recognized).
Based on the determination result, in step S2030a shown in FIG. 23, the first adapter communication unit 312 controls the aperture control unit 314 in accordance with the received lens control command (drive start command). At this time, the first adapter communication unit 312 does not transmit the received lens control command (drive start command) to the first lens communication unit 212.
The aperture control unit 314 controls the aperture interlocking lever driving unit 330 to drive the aperture interlocking lever 350 in accordance with the received lens control command (drive start command). Thereby, the diaphragm mechanism 251 in the interchangeable lens 200 can be driven according to the driving amount of the diaphragm interlocking lever 350.
In step S2040a, when the movement of the aperture interlocking lever 350 to the target position is completed, the aperture controller 314 controls the aperture interlocking lever driving unit 330 to stop driving the aperture interlocking lever 350. In addition, the aperture control unit 314 sets “driving stop” indicating that the driving state of the aperture interlocking lever 350 is the driving stopped state.

  The “response during driving” set in step S2032 and the “drive stop response” set in step 2040a are notified from the first adapter communication unit 212 as response information to the first camera communication unit 112 by steady data communication. The

According to the present embodiment, a common control command can be transmitted from the first camera communication unit 112 to the first adapter communication unit 212 even when the drive system of the diaphragm in the interchangeable lens is different. In addition, the aperture control of each interchangeable lens (the interchangeable lens 200 and the interchangeable lens 200C) can be appropriately performed. That is, even if there is no compatibility between the aperture control standard in the camera body 100 and the aperture control standard in various interchangeable lenses, the camera body side, interchangeable lens can be obtained by interposing the adapter 300 of this embodiment. The diaphragm control according to the various interchangeable lenses can be realized based on the diaphragm control command from the camera body 100 without requiring any change in the standards in both the configurations on the side.
The adapter 300 determines the diaphragm driving method based on the type information acquired from the interchangeable lens.

As described above, the adapter control unit 310 uses the diaphragm mechanism 251 (251C) (diaphragm) of the interchangeable lens 200 and the interchangeable lens 200C, which are different in the driving method of the diaphragm unit 250 (diaphragm mechanism 251) included in the interchangeable lens 200 (200C). Are controlled in accordance with a common control command supplied from the camera body 100.
Accordingly, the adapter control unit 310 sets the aperture diameters of the diaphragm mechanisms 251 (251C) of the interchangeable lens 200 and the interchangeable lens 200C, which are different in the driving method of the diaphragm unit 250 (diaphragm mechanism 251), according to a common control command. Since it can be controlled, various types of interchangeable lenses (optical systems) can be appropriately functioned in the camera system 1.

The adapter controller 310 changes various types of interchangeable lenses (optical systems) by changing to a control method corresponding to the driving method of the diaphragm mechanism 251 according to the lens type information indicating the type of the interchangeable lens 200. Can function properly.
For example, the aperture interlocking lever driving unit 330 (first driving unit) drives the aperture mechanism 251 by mechanically transmitting the generated stress.
The adapter control unit 310 executes a process of moving the aperture interlocking lever 350 by controlling the aperture interlocking lever driving unit 330. As the aperture interlocking lever driving unit 330 (first driving unit), the aperture interlocking lever 350 (aperture interlocking mechanism unit) moves to a position corresponding to the aperture diameter of the aperture mechanism 251 provided in the interchangeable lens 200. Thereby, the aperture interlocking lever driving unit 330 (the aperture interlocking mechanism driving unit) can move the position of the aperture interlocking lever 350.

  Further, for example, the interchangeable lens 200C includes an optical system control unit 211C that controls the aperture diameter of the diaphragm mechanism 251C (diaphragm blade) included in the interchangeable lens 200C by driving the diaphragm drive unit 233C (second drive unit). In this case, the adapter control unit 310 executes processing for driving the aperture driving unit 233C by controlling the optical system control unit 211C according to the control command.

  As described above, the adapter control unit 310 selects any one of the diaphragm interlocking lever driving unit 330 and the diaphragm driving unit 233C (second driving unit) that drives the diaphragm mechanism 251C in the interchangeable lens 200 according to the lens type information. By selecting either one and controlling any one of the selected drive units, the aperture diameter of the diaphragm mechanism 251 (251C) can be controlled.

  In addition, a program for realizing the functions of the camera control unit 110, the lens control unit 210, or the adapter control unit 310 is recorded on a computer-readable recording medium, and the program recorded on the recording medium is stored in the computer. The processing of each unit described above may be performed by reading and executing the system. Here, the “computer system” includes an OS and hardware such as peripheral devices.

Further, the “computer system” includes a homepage providing environment (or display environment) if a WWW system is used.
The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Furthermore, the “computer-readable recording medium” dynamically holds a program for a short time like a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line. In this case, it also includes those that hold a program for a certain period of time, such as a volatile memory inside a computer system serving as a server or client in that case. The program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes a design and the like within the scope not departing from the gist of the present invention.

  DESCRIPTION OF SYMBOLS 1 Camera system, 100 Camera body, 102 Shutter, 103 Signal processing part, 104 Image pick-up element, 105 AD conversion part, 106 AF sensor, 110 Camera control part, 130 Operation reception part, 140 Image processing part, 150 Display part, 160 Memory | storage Unit, 170 buffer memory unit, 180 storage medium control unit, 200 interchangeable lens, 202 zoom operation ring, 210 lens control unit, 220 optical system, 230 optical system drive unit, 251 aperture mechanism (diaphragm), 300 adapter, 301 first Mount (first mount portion), 302 second mount (second mount portion), 310 adapter control portion, 312 first adapter communication portion, 313 second adapter communication portion, 320 adapter power supply portion, 321 DC-DC converter portion, 322 First regulator part, 3 23 Second regulator unit, 325 Vc voltage detection unit, 326 Vp voltage detection unit, 327 PWR voltage detection unit, 330 aperture interlock lever drive unit, 350 aperture interlock lever, 400 storage medium

Claims (10)

A first mount part to which the camera body can be attached and detached;
A second mount part that is provided separately from the first mount part and is capable of attaching and detaching an interchangeable lens having a focus lens for adjusting the focus;
An adapter controller that generates position information of the focus lens by a pulse signal output from the interchangeable lens by movement of the focus lens, and transmits the position information to the camera body;
The adapter controller is
An adapter that generates and transmits the position information after power supply to the interchangeable lens is started. The adapter controller is
The adapter according to claim 1, wherein the position information is transmitted to the camera body by control from the camera body. The adapter controller is
2. The position information generation process using the pulse signal output from the interchangeable lens is started after setting the position information to be transmitted to the camera body by control from the camera body. 2. The adapter according to 2. The adapter controller is
The adapter according to any one of claims 1 to 3, wherein the pulse signal is received from the interchangeable lens during execution of initialization processing of the interchangeable lens and the adapter. The adapter controller is
The adapter according to any one of claims 1 to 4, wherein after the lens information acquired from the interchangeable lens is transmitted to the camera body, reception of the pulse signal from the interchangeable lens is started. The adapter controller is
6. The lens information acquired from the interchangeable lens in the initialization process of the interchangeable lens and the adapter is transmitted to the camera body after the initialization process is completed. 6. adapter. The adapter controller is
The adapter according to any one of claims 1 to 6, wherein the pulse signal is received from the interchangeable lens by transmitting a control command requesting a process for outputting the pulse signal to the interchangeable lens. The adapter controller is
The adapter according to any one of claims 1 to 7, wherein the position information is transmitted after lens information acquired from the interchangeable lens is transmitted to the camera body. The adapter according to any one of claims 1 to 8, and
The camera body attached to the first mount;
The interchangeable lens mounted on the second mount part;
A camera system comprising: Provided in an adapter comprising a first mount part to which the camera body can be attached and detached, and a second mount part that is provided separately from the first mount part and to which an interchangeable lens having a focus lens for adjusting the focus can be attached and detached. An adapter control program for controlling the operation of the adapter control unit,
Generating position information of the focus lens by a pulse signal output from the interchangeable lens by movement of the focus lens, and transmitting the position information to the camera body;
An adapter control program for executing the step of generating and transmitting the position information after starting the supply of power to the interchangeable lens.

Images