JP7227327B1 - Lens cap and data update method - Google Patents

Abstract

A lens cap capable of appropriately updating data in a connecting part for connecting a lens and a camera body, and a data updating method for the connecting part. An interchangeable mount having a first connection section detachable from a camera body according to a first mount standard and a second connection section detachable from an interchangeable lens according to a second mount standard, The lens cap is attachable/detachable at the second connection portion, and has a first terminal connectable to an external device from the first connection portion side in a state of being connected to the replacement mount. [Selection drawing] Fig. 5

Description

The present invention relates to a lens cap and a data update method.

2. Description of the Related Art Conventionally, lens-interchangeable imaging apparatuses (cameras) have been widely used. The mount standard for the connecting portion between the lens and the camera body (hereinafter also simply referred to as the standard) may differ depending on the manufacturer or the like. If the specifications of the connecting parts of the lens and the camera body are different, you can combine the lenses and camera bodies of various manufacturers by connecting them via connecting parts (hereinafter also referred to as lens mounts or interchangeable mounts). It is being used.

Further, in recent years, cameras have been controlled by a control section built in the camera or the like. Camera bodies and lenses with new functions and features are being developed and sold every day. There is a demand for updating control data for performing

For example, Patent Literature 1 discloses a configuration in which, by attaching a lens mount cap to an interchangeable lens, control parameters held in the interchangeable lens are changed using data held in the lens mount cap. .

JP-A-2003-35924

A connecting part for connecting the lens and the camera body also holds control data for performing control suitable for the combination of the lens and the camera body. Here, consider updating the control data held in the connection component. For example, the structure of connecting parts has a flange back and optical path determined by standards, and it is difficult to add a circuit for updating control data and a terminal for connecting to an external device in the relatively narrow space of the connecting parts. . Also, if the control data in the connection part is updated while the connection part is connected to the camera body, unintended rewriting of the data on the camera body side may occur due to the connection status of the terminal. There is also the problem of

In view of the above problems, it is an object of the present invention to provide a lens cap capable of appropriately updating data in a connecting part for connecting a lens and a camera body, and a data updating method for the connecting part.

In order to solve the above problems, one embodiment of the present invention has the following configuration. That is, for an interchangeable mount having a first connecting portion detachable from a camera body according to a first mount standard and a second connecting portion detachable from an interchangeable lens according to a second mount standard, A lens cap that can be attached and detached at the connection part of 2,
It has a first terminal that can be connected to an external device from the first connection portion side while being connected to the replacement mount.

Moreover, another form of this invention has the following structures. That is, a data update method for data held in an interchangeable mount that enables connection between an interchangeable lens and a camera body,
The interchangeable mount includes a first connecting portion detachable from the camera body according to a first mount standard, and a second connecting portion detachable from the interchangeable lens or lens cap according to a second mount standard. have
The lens cap and the exchange mount are connected at the second connection portion, the lens cap and the external device are connected via a terminal, and the camera body and the exchange mount are connected at the second connection portion. In the state where it is not connected at the connection part of 1,
a control circuit of the lens cap,
requesting update data from the external device;
Acquiring the update data from the external device;
The update data is used to update the data held by the replacement mount.

It should be noted that the above summary of the invention does not list all the features of the invention. Subcombinations of these feature groups can also be inventions.

1 is an external perspective view showing a configuration example of an imaging system according to an embodiment of the present invention; FIG. 1 is an external perspective view showing a configuration example of an imaging system according to an embodiment of the present invention; FIG. 1 is an external perspective view showing a configuration example of an imaging system according to an embodiment of the present invention; FIG. 1 is an external perspective view showing a configuration example of a replacement mount according to one embodiment of the present invention; FIG. 1 is an external perspective view showing a configuration example of a lens mount cap according to an embodiment of the present invention; FIG. FIG. 2 is an external perspective view showing a configuration example of a component included in the lens mount cap according to one embodiment of the present invention; 1 is an external perspective view showing a configuration example of an interchangeable lens according to an embodiment of the present invention; FIG. FIG. 4 is a diagram for explaining a configuration when updating data according to an embodiment of the present invention; 4 is a processing sequence when data is updated according to an embodiment of the present invention;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In addition, the embodiment described below is one embodiment for describing the present invention, and is not intended to be interpreted as limiting the present invention. Not all configurations are essential configurations for solving the problems of the present invention. Moreover, in each drawing, the same component is indicated by the same reference number to indicate the correspondence.

The claims, specification, drawings, and abstract contain material that is subject to copyright protection. The copyright owner has no objection to the facsimile reproduction by any person of these documents as they appear in the Patent Office files or records. However, otherwise, all copyrights are reserved.

[Device configuration]
FIG. 1 is an external perspective view showing a configuration example of an imaging system according to the present invention. A three-dimensional coordinate system consisting of x-axis, y-axis, and z-axis shown in the drawings corresponds to each drawing, but is omitted in some drawings.

The imaging system according to this embodiment is configured such that an interchangeable lens is detachable. FIG. 1(a) shows a photographing system in which a lens mount cap 300 (also referred to as a lens cap) is connected in place of the interchangeable lens 400. FIG. FIG. 1(b) shows a state in which an interchangeable lens 400 is connected in the imaging system. In the imaging system according to the present embodiment, a replacement mount 200 is installed between a camera body 100 as an imaging device and a lens mount cap 300 to connect them. The interchangeable mount 200 is also installed when connecting the camera body 100 and the interchangeable lens 400 .

Here, in the interchangeable mount 200, the mount standard on the side connected to the camera body 100 (hereinafter also referred to as the first mount standard) and the mount standard on the side connected to the interchangeable lens 400 and the lens mount cap 300 (hereinafter referred to as the first mount standard). 2 mount standard) will be described. Therefore, by using the interchangeable mount 200 that is a combination of the first mount standard and the second mount standard, which correspond to the mount standards adopted for the camera body 100 and the interchangeable lens 400 respectively, various camera bodies 100 can be used. and the interchangeable lens 400 can be combined.

FIG. 2 shows a state in which the camera body 100, the interchangeable mount 200, and the lens mount cap 300 are separated from the state of FIG. 1(a). 1 is an external perspective view seen from the side). FIG. 3 shows a state in which the camera body 100, the exchange mount 200, and the lens mount cap 300 are separated from the state shown in FIG. be. In addition, in FIG. 2 and FIG. 3 , a part of the structure is omitted (transparent) in order to explain the structure of each part.

Referring to FIG. 2, camera body 100 includes housing 101 , image sensor 102 , terminal 103 , lever 104 and fixing flange 105 . A housing 101 supports each part of the camera body 100 . Note that the camera body 100 may be configured to be connectable to other devices (not shown) such as a gimbal, or may be mounted on a vehicle, an unmanned aerial vehicle, or the like. The image sensor 102 has an imaging element (not shown), photoelectrically converts an optical image formed by light incident through the interchangeable lens 400, and outputs the result as an image signal. The image sensor 102 may use a method such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor).

The terminal 103 is used for communication with the replacement mount 200 and for power supply. The lever 104 is used, for example, when connecting the replacement mount 200 to the camera body 100, and can fix or release the replacement mount 200 by sliding it in the rotational direction around the z-axis. The fixing flange 105 is arranged to correspond to the fixing flange 212 on the replacement mount 200 side in order to fix the replacement mount 200 . The shape and number of the fixing flanges 105, the arrangement of the terminals 103, the diameter around the image sensor 102 formed in the housing 101 of the camera body 100, and the like differ according to the mount standard employed in the camera body 100. FIG.

Further, referring to FIG. 3, the camera body 100 includes an image processing CPU 106, a lens control CPU 107, a battery 108, a battery cable 109, and a connection cable 110. The image processing CPU 106 forms an image based on the image signal obtained from the image sensor 102 and performs various image processing. The image processing may include, for example, shading correction, color correction, edge enhancement, noise removal, gamma correction, compression processing, etc., and is not particularly limited. The lens control CPU 107 identifies the interchangeable lens 400 connected via the interchangeable mount 200 and performs processing according to the interchangeable lens 400 . The lens control CPU 107 acquires various control parameters from a lens parameter management CPU 203 provided in the interchangeable mount 200 to be described later, and controls the interchangeable lens 400 . The image processing CPU 106 and the lens control CPU 107 may include a storage unit for holding various data in addition to the processing unit.

The battery 108 supplies power to the camera body 100 and each component connected via the connection cable 110 . In the imaging system according to the present embodiment, the battery 108 can supply power to the camera body 100 as well as the interchangeable mount 200, the lens mount cap 300, and the interchangeable lens 400 that are connected. A battery cable 109 is a cable for supplying power from the battery 108 to each part in the camera body 100 . A connection cable 110 is a cable for communication with an external device and for supplying power supplied from the battery 108 to the external device. The connection cable 110 includes a plurality of cables that connect each processing unit and the battery 108 in the camera body 100 and the terminal 103 .

Referring to FIG. 2, exchange mount 200 includes terminal 201 and lever 202 . A terminal 201 is used for communication with the lens mount cap 300 and the interchangeable lens 400 and for power supply. The lever 202 is used to connect the lens mount cap 300 and the interchangeable lens 400 to the interchangeable mount 200, and can fix or release the lens mount cap 300 and the interchangeable lens 400 by sliding in the rotational direction around the z-axis. can.

Further, referring to FIG. 3, the interchangeable mount 200 includes a lens parameter management CPU 203, an attachment detection sensor 204, and a terminal 205. As shown in FIG. A lens parameter management CPU 203 manages control parameters used to control the interchangeable lens 400 connected to the interchangeable mount 200 . Since various interchangeable lenses 400 conforming to the standard can be connected to the interchangeable mount 200, control parameters corresponding to those interchangeable lenses 400 may be held. A mounting detection sensor 204 detects that the lens mount cap 300 or the interchangeable lens 400 is mounted on the interchangeable mount 200 . The attachment detection sensor 204 may detect attachment by physical contact, or may detect attachment in a non-contact manner by irradiating a laser or the like. A terminal 205 is used for communication with the camera body 100 and for power supply. In the interchangeable mount 200, the terminal 201 on the interchangeable lens 400 (or lens mount cap 300) side and the terminal 205 on the camera body 100 side may be electrically connected directly or indirectly. The lens parameter management CPU 203 may include a storage unit for holding various data in addition to the processing unit.

Referring to FIG. 3, lens mount cap 300 has control circuitry 301 . The control circuit 301 includes a terminal 302 , an update CPU 303 , a status display section 304 and a terminal 305 . The terminal 302 is used for communication with an external device and power supply via a connection cable (not shown). The update CPU 303 performs control to update various control parameters and programs of the exchange mount 200 using data acquired from an external device. A state display unit 304 is a display unit for indicating the state of power supply to the control circuit 301, the state of execution of update processing, and the like, and is composed of, for example, an LED (Light Emitting Diode). The state display section 304 may switch the color, display method, etc. according to the state. A terminal 305 is used for communication with the replacement mount 200 and for power supply. When the lens mount cap 300 is connected to the interchangeable mount 200 and the interchangeable mount 200 is connected to the camera body 100 , the terminal 302 is located inside the camera body 100 , the interchangeable mount 200 , and the space surrounded by the lens mount cap 300 . exists in The inner side of the exchange mount 200 means, for example, the side of the exchange mount 200 facing the center of the optical axis from the lever 202 . Light condensed by the interchangeable lens 400 can pass through the inside of the interchangeable mount 200 .

FIG. 4 is an external perspective view for further explaining a configuration example of the replacement mount 200 according to this embodiment. In FIGS. 2 and 3, part of the replacement mount 200 is omitted for the sake of explanation, but here it is shown according to the external shape. 4(a) is an external perspective view from the side to which the interchangeable lens 400 is connected, and FIG. 4(b) is an external perspective view from the side to which the camera body 100 is connected. The indicators 206 and 207 are indicators used when the interchangeable lens 400 is attached, and the user can align the parts by visually confirming each indicator, and can determine the appropriate position at the time of replacement. can grasp. A fixing flange 208 is a flange for fixing the lens mount cap 300 and the interchangeable lens 400 to the interchangeable mount 200 . Each part is fixed by fitting the fixing flange 208 with a flange provided on the lens mount cap 300 or the interchangeable lens 400 .

The lens positioning pin 209 is fitted into a concave portion provided on the lens mount cap 300 or the interchangeable lens 400 side to determine and fix the connection position of the lens mount cap 300 or the interchangeable lens 400 to the interchangeable mount 200 . The lens dropout prevention mechanism 210 is a part for preventing the interchangeable lens 400 from falling when the interchangeable lens 400 is replaced. The fixing flange 211 is a flange for fixing the replacement mount 200 to the camera body 100 . The mount positioning notch 212 is fitted with a protrusion (not shown) provided on the camera body 100 side to determine and fix the connection position of the replacement mount 200 to the camera body 100 .

FIG. 5 is an external perspective view for further explaining a configuration example of the lens mount cap 300 according to this embodiment. Although part of the lens mount cap 300 is omitted in FIGS. 2 and 3 for the sake of explanation, it is shown here according to the external shape. 5(a) is an external perspective view seen from the side to which the replacement mount 200 is connected, and FIG. 5(b) is an external perspective view seen from the front side. The concave portion 306 is fitted with a positioning pin 209 provided on the replacement mount 200 to position and fix the lens mount cap 300 with respect to the replacement mount 200 . A fixing flange 307 is a flange for fixing the lens mount cap 300 to the replacement mount 200 . Each part is fixed by fitting the fixing flange 307 and the fixing flange 208 provided on the replacement mount 200 . The lid portion 308 is a portion that constitutes the front portion of the lens mount cap 300 . The surface shape and configuration of the lid portion 308 are not particularly limited, and, for example, information regarding the replacement mount 200 may be displayed.

FIG. 6 is an external perspective view showing only the control circuit 301 provided inside the lens mount cap 300. As shown in FIG. As described above, the control circuit 301 includes the terminal 302, the update CPU 303, the status display section 304, and the terminal 305, and each part is electrically connected so as to enable energization and communication. The update CPU 303 may include a storage unit for holding various information in addition to the processing unit. A terminal 305 is used for communication with the replacement mount 200 and for power supply. The arrangement of the terminals 305 differs according to the standards adopted by the interchangeable mount 200 and the interchangeable lens 400 .

FIG. 7 is an external perspective view for explaining a configuration example of the interchangeable lens 400 according to the present invention, viewed from the side to which the interchangeable mount 200 is connected. A fixing flange 401 is a flange for fixing the interchangeable lens 400 to the interchangeable mount 200 . The terminal 402 is used for communication with the replacement mount 200 and for power supply. The terminals 402 and their arrangement differ according to the standard adopted for the interchangeable lens 400 . A function ring 403 is a part for switching control parameters when imaging is performed by the imaging system. Examples of control parameters include ISO and exposure, but are not limited to these. By rotating the function ring 403, the control parameter group preset by the user may be switched.

A switch 404 is a part for switching the functions of the interchangeable lens 400 . The functions include, for example, a focus range and functions such as autofocus (AF)/manual focus (MF), but are not particularly limited. The display device 405 is a part for displaying the functions of the interchangeable lens 400, and the functions displayed here include focal length, F-number, and the like, but are not particularly limited. Rotating rings 406 and 407 are parts for adjusting control parameters when imaging is performed by the imaging system. Examples of control parameters include parameters such as zoom, focus, and F value, but are not particularly limited. A function button 408 is a part for switching control parameters when performing imaging with the imaging system. Examples of control parameters include parameters such as AF/MF, focus lock, and aperture, but are not particularly limited. By pressing the function button 408, a control parameter group preset by the user may be switched. The concave portion 409 is fitted with a positioning pin 209 provided on the interchangeable mount 200 to position and fix the interchangeable lens 400 with respect to the interchangeable mount 200 .

FIG. 8 is an external perspective view showing a state in which the interchangeable mount 200 and the lens mount cap 300 according to this embodiment are connected. 8A is an external perspective view from the side to which the camera body 100 is connected, and FIG. 8B is an external perspective view from the front side. In this embodiment, when updating various control parameters of the lens parameter management CPU 203 of the interchangeable mount 200 under the control of the update CPU 303 of the lens mount cap 300, the process is performed in the state shown in FIG. In this state, an external device (not shown) and the terminal 302 of the lens mount cap 300 are connected using a connection cable (not shown). That is, the terminals 302 are arranged so that the terminals 302 can be used in the state shown in FIG. As a connection cable (not shown) for connecting the external device and the lens mount cap 300, for example, a USB (Universal Serial Bus) cable may be used. Data update processing according to the present embodiment will be described later with reference to FIG. As shown in FIG. 8B, the state display section 304 is visible to the user during data update processing.

As shown in FIG. 8, when updating the data in the lens parameter management CPU 203 of the interchangeable mount 200 according to the present embodiment, the interchangeable mount 200 and the camera body 100 are not energized or communicated via a terminal 205 or the like. I am in a state where I cannot. In other words, the terminal 302 of the lens mount cap 300, which is used to perform update processing (to be described later), is arranged at a position inaccessible when the interchangeable mount 200 can communicate with the camera body 100 and can be energized. By doing so, it is possible to prevent the user from accidentally rewriting information in the camera body 100 . In this embodiment, the configuration in which the terminals 302 are provided on the side of the lens mount cap 300 connected to the interchangeable mount 200 is shown as a preferred example. may

An external device connectable to the lens mount cap 300 according to the present embodiment via a connection cable (not shown) may be, for example, an information processing device such as a PC (Personal Computer), a tablet terminal, or a smartphone. The information processing device includes, for example, a control device (not shown), a storage device (not shown), and an interface (not shown) for connecting a connection cable (not shown). The control device may be composed of a CPU (Central Processing Unit), an MPU (Micro Processing Unit), a DSP (Digital Single Processor), a dedicated circuit, or the like. The storage device is composed of volatile and non-volatile storage media such as HDD (Hard Disk Drive), ROM (Read Only Memory), RAM (Random Access Memory), etc., and inputs and outputs various information according to instructions from the control device. It is possible.

[Data update process]
FIG. 9 shows a processing sequence for updating data held in the lens parameter management CPU 203 of the interchangeable mount 200 according to this embodiment. Each step of the processing sequence is executed by the processing unit of the device that is the subject of processing. The data to be updated by the data updating process according to the present embodiment is the data held in the lens parameter management CPU 203 of the interchangeable mount 200, but the content is not particularly limited. For example, as data to be updated, in addition to control parameters for controlling the interchangeable lens 400, a program used in the lens parameter management CPU 203 may be updated. Metadata for managing control parameters may also be updated. Also, the items of data to be updated may be changed according to the interchangeable lens 400 and the camera body 100 compatible with the interchangeable mount 200 .

In step S<b>901 , the update CPU 303 of the lens mount cap 300 is connected to the information processing apparatus 500 as an external device via the terminal 302 and detects power supply (energization) from the information processing apparatus 500 . At this time, the update CPU 303 switches the display of the status display unit 304 to indicate that power is being supplied.

In step S<b>902 , the update CPU 303 confirms connection with the replacement mount 200 via the terminal 305 . In this embodiment, an inquiry is made to the exchange mount 200 as to whether the state shown in FIG. 8 is in effect. If the connection is not established, there is no response from the exchange mount 200, so it is assumed that the exchange mount 200 cannot be updated, and this processing flow ends. In this case, the update CPU 303 may indicate that the update process cannot be performed by switching the display of the status display section 304 .

In step S903, the lens parameter management CPU 203 of the interchangeable mount 200 determines that the connection state is normal in response to receiving power supply and connection confirmation inquiry from the lens mount cap 300 via the terminal 201. respond. At this time, it is determined based on the detection result of the attachment detection sensor 204 that the connection state is normal. Furthermore, the lens parameter management CPU 203 responds to the lens mount cap 300 with information on managed data (version, compatible interchangeable lens, etc.).

In step S<b>904 , the update CPU 303 notifies the information processing apparatus 500 of connection via a connection cable (not shown) based on the response received from the replacement mount 200 . At this time, the update CPU 303 requests update data for the replacement mount 200 . At this time, the update CPU 303 may switch the display of the status display section 304 to indicate that the update process is being performed.

In step S<b>905 , the information processing apparatus 500 identifies data used for updating the lens parameter management CPU 203 of the interchangeable mount 200 based on the request from the lens mount cap 300 . The update data here may be stored in the information processing apparatus 500 in advance, or may be obtained by the information processing apparatus 500 inquiring of an external server or the like. When specifying the update data, for example, the information processing apparatus 500 may specify the latest version of the update data, or the user operating the information processing apparatus 500 may specify the update data.

In step S906, the information processing apparatus 500 transmits the update data identified in step S905 to the lens mount cap 300 via a connection cable (not shown). If the data held in the exchange mount 200 is already the latest, the information processing device 500 may send a signal to that effect to the lens mount cap 300 .

In step S<b>907 , the update CPU 303 of the lens mount cap 300 receives the update data transmitted from the information processing device 500 .

In step S908, the update CPU 303 performs update control on the lens parameter management CPU 203 of the interchangeable mount 200 using the data received in step S907. If the data in the lens parameter management CPU 203 is the latest, the update CPU 303 may end the update process, and in that case, the process may proceed to step S911.

In step S<b>909 , the lens parameter management CPU 203 of the interchangeable mount 200 updates various data based on instructions from the update CPU 303 of the lens mount cap 300 .

In step S910, the lens parameter management CPU 203 notifies the update CPU 303 of the lens mount cap 300 of the completion of the update after completing the update of the various control parameters.

In step S<b>911 , the update CPU 303 of the lens mount cap 300 switches the display of the status display section 304 based on the notification received from the replacement mount 200 . This allows the user to visually recognize that the update process has ended. At this time, the update CPU 303 may notify the information processing apparatus 500 that the update process has been completed. Then, this processing flow ends.

As described above, according to the present embodiment, it is possible to provide the lens mount cap 300 capable of updating various parameters held by the exchange mount 200 . Since the update is performed in a state in which the connection to the camera body 100 is not established, it is possible to prevent unintended change of the control parameters on the camera body 100 side. In addition, since the user can sequentially check the status at the time of updating, it is possible to improve the convenience at the time of updating. Also, even when a new interchangeable lens or camera body is released, it is possible to update the control parameters of the interchangeable mount according to the combination of the interchangeable lens and camera body.

In the state shown in FIG. 1A, the lens mount cap 300 according to the present embodiment can also play a role as a conventional lens cap, which is dustproof, waterproof, and prevents the image sensor 102 from being scratched or adhered with dust. can.

Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments. It is obvious to those skilled in the art that various modifications and improvements can be made to the above embodiments. It is clear from the description of the scope of claims that forms with such modifications or improvements can also be included in the technical scope of the present invention.

As described above, this specification discloses the following matters.
(1) A first connector (e.g., 201, 212) detachable from a camera body (e.g., 100) in accordance with a first mount standard, and an interchangeable lens (e.g., 400) in accordance with a second mount standard. A lens cap (e.g., 300) that can be attached and detached at the second connection portion (e.g., 208, 207, 209) and a replacement mount (e.g., 200) that has a detachable second connection portion (e.g., 208, 207, 209). hand,
A lens cap having a first terminal (eg, 302) connectable to an external device (eg, 500) from the first connection portion side while being connected to the exchange mount.
With this configuration, it is possible to provide a lens cap capable of appropriately updating the data in the interchangeable mount for connecting the lens and the camera body.

(2) The first terminal connects the camera body and the interchangeable mount at the first connecting portion, and connects the interchangeable mount and the lens cap at the second connecting portion. The lens cap according to (1), which exists in a space surrounded by the camera body, the inside of the interchangeable mount, and the lens cap in the closed state.
With this configuration, it is possible to prevent unintended change of the control parameters on the camera body side when updating the data of the interchangeable mount.

(3) The lens cap according to (1) or (2), comprising a processing unit (eg, 303) for updating data held in the interchangeable mount.
With this configuration, the data held by the interchangeable mount can be updated by control on the lens cap side.

(4) The lens cap according to (3), further comprising a status display section (for example, 304) that indicates the status of data update by the processing section.
With this configuration, the user can easily check the update state of the exchange mount data.

(5) The lens cap according to (3) or (4), wherein the data held in the interchangeable mount are control parameters corresponding to the interchangeable lens.
With this configuration, it is possible to appropriately update the control parameters corresponding to the interchangeable lens of the interchangeable mount.

(6) A lens cap according to any one of (1) to (5), comprising a second terminal (eg, 305) capable of communicating with the exchange mount when connected to the exchange mount.
This configuration allows the lens cap to communicate with the interchangeable mount through the terminal.

(7) The lens cap according to any one of (1) to (6), wherein the lens cap and the interchangeable mount are powered by a power source provided in the external device.
With this configuration, the lens cap and exchange mount do not need to be equipped with a power source, and data can be updated using power from an external device.

(8) when the lens cap and the external device are connected via the first terminal, the power supplied from the power supply is supplied to the exchange mount via the lens cap; ).
This configuration allows the interchangeable mount to use the necessary power through the lens cap when updating data.

(9) The replacement mount is
a third terminal (for example, 205) capable of communicating with the camera main body on the first connection portion side;
a fourth terminal (for example, 201) capable of communicating with the lens cap on the second connection portion side;
The lens cap according to any one of (1) to (8), having
With this configuration, the exchange mount has terminals for communication on the camera body side and the lens cap side, respectively, so that connection and communication corresponding to each are possible.

(10) A method for updating data held in an interchangeable mount (eg, 200) that enables connection between an interchangeable lens (eg, 400) and a camera body (eg, 100), comprising:
The interchangeable mount includes a first connection section (eg, 201, 212) detachable from the camera body according to a first mount standard, the interchangeable lens or lens cap (eg, 300), and a second mount standard. a second connection part (for example, 208, 207, 209) that can be attached and detached at
The lens cap and the interchangeable mount are connected at the second connecting portion (for example, 208), the lens cap and an external device (for example, 500) are connected via a terminal, and In a state in which the camera body and the replacement mount are not connected at the first connection portion (for example, 211),
A control circuit (for example, 303) that the lens cap has,
request update data from the external device (for example, S904);
acquiring the update data from the external device (for example, S907);
A data update method for updating the data held by the replacement mount using the update data (for example, S908).
With this configuration, it is possible to appropriately update the data in the connecting part for connecting the lens and the camera body.

(11) The terminal of the lens cap connects the camera body and the interchangeable mount at the first connecting portion, and connects the interchangeable mount and the lens cap at the second connecting portion. 11. The data updating method according to claim 10, wherein the data update method exists in a space surrounded by the inside of the camera body, the interchangeable mount, and the lens cap in the closed state.
With this configuration, it is possible to prevent unintended change of the control parameters on the camera body side when updating the data of the interchangeable mount.

(12) the control circuit obtains information about the data from the replacement mount (eg, S902, S904), and requests the update data from the external device based on the information (eg, S904); The data update method according to (10) or (11).
With this configuration, it is possible to acquire appropriate update data according to the status of data held by the exchange mount.

(13) The control circuit notifies the update status of the data (eg, S908) via the status display unit (eg, 304), the data update according to any one of (10) to (12). Method.
With this configuration, the user can easily check the update state of the exchange mount data.

DESCRIPTION OF SYMBOLS 100... Camera main body 101... Housing 102... Image sensor 103... Terminal 104... Lever 105... Fixing flange 106... Image processing CPU
107... Lens control CPU
108 Battery 109 Battery cable 110 Connection cable 200 Replacement mount 201 Terminal 202 Lever 203 Lens parameter management CPU
204 Mounting detection sensor 205 Terminal 300 Lens mount cap 301 Control circuit 302 Terminal 303 Update CPU
304... Status display unit 305... Terminal 400... Interchangeable lens

Claims (10)

For an interchangeable mount having a first connecting portion detachable to a camera body according to a first mount standard and a second connecting portion detachable to an interchangeable lens according to a second mount standard, the second A lens cap that is detachable at a connecting portion,
a first terminal connectable to an external device from the first connection portion side while being connected to the replacement mount;
a processing unit for updating data held in the exchange mount;
a lens cap. The first terminal is in a state in which the camera body and the interchangeable mount are connected at the first connecting portion, and the interchangeable mount and the lens cap are connected at the second connecting portion. 2. The lens cap according to claim 1, which exists in a space surrounded by the camera body, the inside of the interchangeable mount, and the lens cap. 3. The lens cap according to claim 1, further comprising a status display section for indicating a status of data update by said processing section. 4. The lens cap according to any one of claims 1 to 3, wherein the data held in said interchangeable mount are control parameters corresponding to said interchangeable lens. 5. A lens cap according to any one of claims 1 to 4, comprising a second terminal communicable with said exchange mount when connected thereto. 6. A lens cap according to any one of claims 1 to 5, wherein said lens cap and said interchangeable mount are powered by a power source provided in said external device. 7. The lens cap according to claim 6, wherein when the lens cap and the external device are connected via the first terminal, power supplied from the power supply is supplied to the interchangeable mount via the lens cap. lens cap. A data update method for data held in an interchangeable mount that enables connection between an interchangeable lens and a camera body,
The interchangeable mount includes a first connecting portion detachable from the camera body according to a first mount standard, and a second connecting portion detachable from the interchangeable lens or lens cap according to a second mount standard. have
The terminal of the lens cap is connected to the camera body and the interchangeable mount at the first connecting portion, and the interchangeable mount and the lens cap are connected at the second connecting portion. , existing in a space surrounded by the camera body, the inside of the interchangeable mount, and the lens cap,
The lens cap and the exchange mount are connected at the second connection portion, the lens cap and the external device are connected via the terminal, and the camera body and the exchange mount are connected with the In the state of not being connected at the first connecting part,
a control circuit of the lens cap,
requesting update data from the external device;
Acquiring the update data from the external device;
A data update method, wherein the update data is used to update the data held by the exchange mount. 9. The data update method according to claim 8 , wherein said control circuit acquires information about said data from said exchange mount and requests said update data from said external device based on said information. 10. The data update method according to claim 8 , wherein said control circuit notifies said data update state via a state display unit.

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