JP4746722B2 - Head-separated camera device, imaging device, control device, and method for controlling head-separated camera device - Google Patents

Description

  The present invention relates to a head-separated camera device in which a camera head and a camera control unit that controls the camera head are separated.

  As is well known, a head-separated camera device includes, for example, a camera head incorporating a solid-state image sensor such as a CCD (Charge Coupled Device) sensor or a CMOS (Complementary Metal-Oxide Semiconductor) sensor, and a solid-state image sensor of this camera head. On the other hand, a camera control unit (CCU: Camera Control Unit) that provides a control signal for driving and obtains a video signal by performing signal processing on the output of the solid-state imaging device is configured separately. The camera head and the CCU are connected via a cable in which a plurality of signal lines are bundled.

  Since the head-separated camera device is used in a wide range of industries, higher functionality and higher performance are desired. In the head-separated camera device, the types and the number of bits of signals transmitted between the camera head and the CCU have increased remarkably. For this reason, the number of signal lines included in the camera cable increases and becomes thicker, and the connector for connecting the camera cable and the camera head also tends to increase in size due to an increase in the number of terminals.

  In general, the head-separated camera device has been developed for the purpose of inspecting a narrow area where a human cannot enter, and therefore it is desired to make the camera head as small as possible. . For this reason, an increase in the size of the camera cable itself or an increase in the size of the connector for connecting to the camera cable is an important issue that must be avoided because it can hinder downsizing of the camera head. Yes.

  Patent Document 1 discloses an imaging apparatus in which a camera head unit 117 and a control unit unit 118 are separated, and a control signal is transmitted from a CPU 116 of the control unit unit 118 to a plurality of devices such as the microcomputer 106 of the camera head unit 117. The configuration to be disclosed is disclosed.

JP 2005-31535 A

  Here, a controlled device such as a sensor element provided in a camera head controlled by the CCU generally has a digital output in accordance with SoC (System on a chip). Therefore, a large number of pins are arranged on the controlled device. Therefore, the number of signal lines connecting between the sensor elements and the control unit that controls the sensor elements tends to increase.

  Furthermore, the number of signal lines for the CCU to control the camera head increases according to the number of controlled devices such as a plurality of sensor elements and memories.

  However, Patent Document 1 does not mention a configuration that reduces the number of signal lines between the CCU and the camera head when the number of controlled devices increases.

  Accordingly, the present invention provides a head that can control the camera head without increasing the number of signal lines of the camera cable that connects the camera head and the CCU that controls the camera head even if the number of controlled devices in the camera head increases. An object is to provide a separation type camera device.

  The head-separated camera device according to the present invention includes an imaging device, a control device that controls the imaging device, and a single control line that supplies a control signal, and a cable that connects the imaging device and the control device. The control device includes a selection command for notifying the controlled device to be controlled among the one or more controlled devices in the imaging device, and control data indicating the control content to the controlled object. A first control unit that outputs the control signal, and the imaging device individually notifies whether or not the controlled device to be controlled is a control target based on the selection command. And a second control means for transmitting the control data.

  According to the above-described invention, even if the number of controlled devices in the camera head increases, the camera head can be connected without increasing the number of signal lines of the camera cable that connects the camera head and the camera control unit that controls the camera head. A head-separated camera device that can be controlled can be provided.

The block block diagram shown in order to demonstrate the signal processing system of the head separation type camera apparatus concerning a 1st embodiment. FIG. 3 is a block diagram showing the arrangement of signal lines in the head-separated camera device according to the first embodiment. The block diagram of the selection command which concerns on 1st Embodiment. The timing chart in the case of communicating with the 1st sensor element which concerns on 1st Embodiment. The timing chart in the case of communicating with the 1st sensor element and 3rd sensor element which concern on 1st Embodiment. The block diagram of the selection command which concerns on 2nd Embodiment.

  Hereinafter, embodiments will be described in detail with reference to the drawings. FIG. 1 shows a signal processing system of the head-separated camera apparatus according to the first embodiment. In other words, this head-separated camera device has a configuration in which an imaging unit (hereinafter referred to as camera head) 10 and a control unit (hereinafter referred to as CCU) 20 that controls the imaging unit 10 are connected by a camera cable 30. The head-separated camera device can be used at a position separated by the distance of the length of the camera cable 30.

  The camera head 10 includes a sensor 101, a PLD (Programmable Logic Device) 102, and a memory 103.

  The sensor 101 includes a first sensor element 1011, a second sensor element 1012, and a third sensor element 1013 as sensors corresponding to RGB. The sensor 101 forms an optical image of the incident subject on the light receiving surface. The sensor 101 converts the digital image signal corresponding to the optical image. The sensor 101 is a digital sensor such as a CMOS sensor, for example.

The PLD 102 includes a control signal processing unit 1021 and a parallel / serial conversion unit 1022. The control signal processing unit 1021 selects whether the first sensor element 1011, the second sensor element 1012, the third sensor element 1013, and the memory 1014 are devices to be controlled by the MPU 201 based on the control by the CCU 20. The parallel / serial conversion unit 1022 transmits serial data on which the video signal and the synchronization signal are superimposed to the CCU 20. The memory 103 stores, for example, data relating to image quality adjustment and synchronization control of the video signal. The memory 103 is, for example, an EEPROM (Electronically Erasable and Programmable Read Only Memory). Also, the CCU 20 is an MPU (Micro Processing Unit) 201, a clock oscillator 202, a TG (Timing Generator) 203, a serial / parallel converter 204, a video signal. A processing unit 205, a video output unit 206, and a memory 207 are provided.

  The MPU 201 receives operation information from the user supplied from the outside, and controls each part of the camera head 10 and the CCU 20 to reflect the operation information. The clock oscillator 202 oscillates a clock signal having a predetermined pulse characteristic.

  The TG 203 generates drive control timing for the sensor 101 based on the clock signal.

  The serial / parallel converter 204 separates serial data transmitted from the camera head into parallel data.

  The video signal processing unit 205 performs signal processing on the video signal according to a predetermined setting value set in advance.

  The video output unit 206 converts the video signal into a signal of a desired video format and outputs an image to a monitor (not shown). Examples of the video format include HD-SDI (High Definition-Serial Digital Interface) and HD-DVI (High Definition-Digital Visual Interface). The memory 207 stores setting values related to the operation of the CCU 20.

  The camera cable 30 includes a control signal cable 301 and a data signal cable 302. The control signal cable 301 transmits a control signal between the camera head 10 and the CCU. The data signal cable 302 transmits a video signal from the camera head 10 to the CCU 20.

  Next, acquisition of a video signal by the CCU 20 will be described along a signal flow with reference to FIG. First, the clock oscillator 202 oscillates the first clock signal (CLK1). The clock oscillator 202 supplies CLK1 to the TG 203. Based on CLK1, the TG 203 generates a horizontal synchronization signal (HS), a vertical synchronization signal (VS), and a second clock signal (CLK2) for driving the sensor. The TG 203 transmits HS, VS, and CLK2 to the sensor 101 via the control signal cable 301.

  The sensor 101 outputs a video signal (VIDEO), a video horizontal synchronization signal (HD), and a video vertical synchronization signal (VD) for restoring an optical image as a third clock signal (CLK3). The parallel / serial conversion unit 1022 converts the video signals having the same phase, HD, VD, and CLK3 into serial data, and transmits the serial data to the CCU 20 via the data signal cable 302.

  The serial / parallel converter 204 converts the video signal, HD, VD, and CLK3 transmitted as serial data into parallel data. The video signal processing unit 205 performs signal processing on the video signal according to a predetermined setting value set in advance. The video signal processing unit 205 supplies the processed video signal, HD, VD, and CLK4 to the video output unit 206. The video output unit 206 converts the video signal, HD, VD, and CLK4 into a signal of a desired video format and outputs an image to a monitor (not shown).

  A signal transmitted and received between the camera head 10 and the CCU 20 may be converted into an LVDS (Low voltage differential signaling) signal. Further, a signal transmitted and received between the camera head 10 and the CCU 20 may be corrected by an enhancer, an equalizer, or the like.

  Next, the arrangement of signal lines related to control signals in the camera head 10 and between the camera head 10 and the CCU 20 will be described. FIG. 2 is a block diagram showing the arrangement of signal lines. Here, a controlled device (controlled element) by the MPU 201 is a first sensor element 1011, a second sensor element 1012, a third sensor element 1013, and a memory 103. Here, although four cases are described as controlled devices, the number is not limited to this.

  Between the control signal processing unit 1021 of the camera head 10 and the MPU 201 of the CCU 20, for three-wire serial communication (serial clock (SCLK), serial output data (SDO) as control signals, serial input data (SIO)) , And a signal line for a chip select (CS_H) signal that is a signal for selecting a control target.

  Here, among the signals transmitted through the signal line for 3-wire serial communication, the signal line for the CS_H signal is a signal for setting selection of the controlled device to be controlled among the four controlled devices. .

  Next, signal lines between the control signal processing unit 1021 in the camera head 10 and the controlled device will be described. Each of the four controlled devices has an RST signal input end, a CS signal input end, an SCLK input end, an SDO input end, and an SDI output end.

  Between the control signal processing unit 1021 and the first sensor element 1011, a signal line for 3-wire serial communication (SCLK_H, SDO_H, SDI_H), a signal line for CS_1 (chip select) signal, or a signal line for RST_1 (reset) A signal line is arranged. Similarly, between the control signal processing unit 1021 and the second sensor element 1012, signal lines for three-wire serial communication (SCLK_H, SDO_H, SDI_H), signal lines for CS_2 (chip select), or RST_2 (reset) ) Signal signal lines are arranged. Between the control signal processing unit 1021 and the third sensor element 1013, a signal line for three-wire serial communication (SCLK_H, SDO_H, SDI_H), a signal line for CS_3 (chip select) signal, or a signal line for RST_3 (reset) A signal line is arranged. Between the control signal processing unit 1021 and the memory 103, a signal line for 3-wire serial communication (SCLK_H, SDO_H, SDI_H), a signal line for CS_4 (chip select) signal, or a signal line for RST_4 (reset) signal is arranged. Has been.

  Next, FIG. 3 is a configuration diagram of a CS_H (chip select) signal (selection command) transmitted from the MPU 201 according to the first embodiment to the control signal processing unit 1021.

  The CS_H signal is a command for selecting a controlled device to be controlled by the MPU 201 from the four controlled devices. The CS_H signal has a signal control identifier for distinguishing it from other commands for the control signal processing unit 1021 at the head. The CS_H signal indicates how the control signal processing unit 1021 controls the CS signal and the RST signal of each controlled device with one bit after the signal control identifier.

  For example, when CS_1 of the signal control command indicates 1, it means that the MPU 201 has not selected the first sensor element 1011 as a control target. The control signal processing unit 1021 transmits a CS_1 signal having a signal level H (High) to the first sensor element 1011. The control signal processing unit 1021 controls the first sensor element 1011 to be in a communication invalid state (inactive state). When CS_1 of the signal control command indicates 0, it means that the MPU 201 has selected the first sensor element 1011 as a control target. The control signal processing unit 1021 transmits a CS_1 signal having a signal level H (Low) to the first sensor element 1011. The control signal processing unit 1021 controls the first sensor element 1011 to be in a communication valid state (active state).

  That is, since the control signal processing unit 1021 can control the signal level of the CS signal (individual selection signal) and the RST signal for each controlled device based on the CS_H signal, a plurality of signals can be simultaneously transmitted to each of the plurality of controlled devices. It is also possible to set.

  Next, operation control for each controlled device by the control signal processing unit 1021 based on the CS_H signal will be described.

  The signal line for three-wire serial communication transmits control signals for the four controlled devices in common. The CS_H signal signal line transmits from the MPU 201 to the control signal processing unit 1021 a CS_H signal for setting the selection of the controlled device to be controlled among the four controlled devices.

The CS_1 signal line transmits the CS_1 signal from the control signal processing unit 1021 to the first sensor element 1011 based on the selection to be controlled by the CS_H signal. The same applies to the CS_2 signal, the CS_3 signal, and the CS_4 signal. The signal line for the RST_1 signal transmits the CS_1 signal from the control signal processing unit 1021 to the first sensor element 1011 based on the reset of the control target by the CS_H signal. The same applies to the RST_2 signal, the RST_3 signal, and the RST_4 signal.

  FIG. 4 is a timing chart when the MPU 201 transmits a control signal only to the first sensor element 1011 to be controlled. The upper row shows the CS_H signal, SCLOCK, and SDO waveforms transmitted from the MPU 201 to the control signal processing unit 1021. The lower part shows waveforms of SCLK_H, SDO_H, CS_1 signal, CS_2 signal, CS_3 signal, and CS_4 signal output from the control signal processing unit 1021 to each controlled device.

  First, when the signal level of the CS_H signal is L, the MPU 201 is in a communication valid state with the control signal processing unit 1021.

  Here, the MPU 201 transmits a CS_H signal in which CS_1 is 0, CS_2, CS_3, and CS_4 indicate 1 to the control signal processing unit 1021. The first sensor element 1011 is a controlled device to be controlled.

  On the other hand, when the signal level of the CS_H signal is H, the control signal processing unit 1021 enters a communication invalid state with the MPU 201 transmitted from the MPU 201.

  The control signal processing unit 1021 transmits a CS_1 signal having a signal level L to the first sensor element 1011 based on the CS_H signal. The control signal processing unit 1021 sets the first sensor element 1011 in a communication valid state with the MPU 201. Similarly, the control signal processing unit 1021 outputs a CS_2 signal having a signal level H to the second sensor element 1012, a CS_3 signal having a signal level H to the third sensor element 1013, and a signal to the memory 103 based on the CS_H signal. Send a level H CS_4 signal. The control signal processing unit 1021 sets the second sensor element 1012, the third sensor element 1013, and the memory 103 in a communication invalid state with the MPU 201.

  While the MPU 201 transmits the CS_H signal to the control signal processing unit 1021, the control signal processing unit 1021 enters a communication invalid state with the MPU 201. The control signal processing unit 1021 outputs the SCLK, SDI, and SDO through to the SCLK_H signal signal line, the SDI_H signal signal line, and the SDO_H signal signal line, respectively. Therefore, when the control signal processing unit 1021 is in a communication invalid state, the MPU 201 and the first sensor element 1011 can perform a three-wire serial communication of a control signal including control data indicating the control content to be controlled.

  While the MPU 201 transmits the CS_H signal to the control signal processing unit 1021, the control signal processing unit 1021 ignores the control signal transmitted from the MPU 201, so that the control signal is not received by mistake.

  When the MPU 201 finishes transmitting the control signal to the first sensor element 1011, the MPU 201 sets the signal level of the CS_H signal to L. The control signal processing unit 1021 enters a communication valid state with the MPU 201. Since the control signal processing unit 1021 cuts off communication between the MPU 201 and the first sensor element 1011 that is a control target, the control signal transmitted from the MPU 201 is transmitted to the first sensor element 1011. Absent. While the MPU 201 is transmitting the CS_H signal of the signal level L to the control signal processing unit 1021, SCLK_H and SDO_H are specified values.

  Then, the MPU 201 transmits a CS_H signal in which CS_1, CS_2, CS_3, and CS_4 indicate 1 to the control signal processing unit 1021. The control signal processing unit 1021 transmits a CS_1 signal having a signal level H to the first sensor element 1011, the second sensor element 1012, the third sensor element 1013, and the memory 103. The control signal processing unit 1021 sets the first sensor element 1011, the second sensor element 1012, the third sensor element 1013, and the memory 103 in a communication invalid state with the MPU 201. As described above, the MPU 201 can reliably control the start and disconnection of communication between the MPU 201 and the first sensor element 1011 by controlling the control signal processing unit 1021 with the CS_H signal. Although the number of controlled objects is one in the above, a plurality of controlled objects can be controlled simultaneously.

  FIG. 5 is a timing chart in the case where the MPU 201 transmits a control signal to the first sensor element 1011 and the third sensor element 1013 which are control targets.

  First, the MPU 201 transmits a CS_H signal indicating that CS_1 and CS_3 are 0, CS_2, and CS_4 are 1 to the control signal processing unit 1021. The control signal processing unit 1021 transmits a CS_1 signal having a signal level L to the first sensor element 1011 that is a control target. The control signal processing unit 1021 sets the first sensor element 1011 in a communication valid state with the MPU 201. Similarly, the control signal processing unit 1021 transmits a CS_3 signal having a signal level L to the third sensor element 1013 that is a control target. The control signal processing unit 1021 sets the third sensor element 1013 in a communication valid state with the MPU 201.

  In addition, the control signal processing unit 1021 transmits a CS_2 signal having a signal level H to the second sensor element 1012 that is not a control target, and a CS_4 signal having a signal level H to the memory 103 that is not a control target. The control signal processing unit 1021 sets the second sensor element 1012 and the memory 103 in a communication invalid state with the MPU 201. While the MPU 201 transmits the CS_H signal to the control signal processing unit 1021, the control signal processing unit 1021 enters a communication invalid state with the MPU 201. Accordingly, three-wire serial communication is possible between the MPU 201 and the first sensor element 1011 and the third sensor element 1013.

  The MPU 201 ends the transmission of the CS_H signal when the transmission of the command to the first sensor element 1011 and the third sensor element 1013 that are the control targets is completed. The control signal processing unit 1021 enters a communication valid state with the MPU 201.

  Then, the MPU 201 transmits a CS_H signal in which CS_1, CS_2, CS_3, and CS_4 indicate 1 to the control signal processing unit 1021. The control signal processing unit 1021 transmits a CS_1 signal having a signal level H to the first sensor element 1011, the second sensor element 1012, the third sensor element 1013, and the memory 103. The control signal processing unit 1021 sets the first sensor element 1011, the second sensor element 1012, the third sensor element 1013, and the memory 103 in a communication invalid state with the MPU 201. As described above, the MPU 201 can simultaneously control the start and cutoff of communication with respect to a plurality of controlled devices selected by the CS_H signal.

  The first embodiment described above is an example in which standard three-wire serial communication is used as it is. Accordingly, there are four signal lines between the MPU 201 and the control signal processing unit 1021 of the camera head 10, that is, three lines + CS_H. By making the communication between the MPU 201 and the control signal processing unit 1021 of the camera head 10 into asynchronous one-way communication or single-line bidirectional communication, the number of signal lines can be further reduced.

  Furthermore, between the MPU 201 and the control signal processing unit 1021 of the camera head 10, it is possible to reduce the CS_H signal line by devising a command. FIG. 6 is a configuration diagram of a selection command according to the second embodiment. FIG. 6 is a block diagram of a signal control command that is transmitted in asynchronous one-way communication with the CS_H signal line omitted. The configuration of the head-separated camera device is the same as that of the first embodiment described with reference to FIG.

  Here, the length of the signal control command is a fixed length. In addition, the MPU 201 does not transmit any command other than the signal control command to the control signal processing unit 1021. Further, since it is not necessary for the control signal processing unit 1021 to simultaneously control the CS signal and the RST signal for one controlled device, the signal control command includes each bit of each of the four controlled devices and the CS / RST. The number of controlled devices × 2 signals is controlled by the selected bit by the number of controlled devices + 1 bit. The controlled device 1 indicated by the selection command in FIG. 6 indicates a bit for the first sensor element 1011. Similarly, the controlled device 2 indicates a second sensor element 1012, the controlled device 3 indicates a third sensor element 1013, and the controlled device 4 indicates a bit for the memory 103.

  The MPU 201 determines a controlled device and its command length in advance, and transmits a selection command to the control signal processing unit 1021. When the control signal processing unit 1021 receives the start bit, the control signal processing unit 1021 reads and analyzes only the fixed length, and controls the four controlled devices. The control signal processing unit 1021 transmits CS signals to the four controlled devices based on the selection command.

  The control signal processing unit 1021 outputs the control signal transmitted from the MPU 201 through the number of bits set to the number of bits of the next command of the selection command. During this time, the control signal processing unit 1021 ignores the control signal transmitted from the MPU 201.

  When the next command ends, the control signal processing unit 1021 automatically transmits a CS signal having a signal level H to each of the four controlled devices. Based on the selection command shown in FIG. 6, the control signal processing unit 1021 can determine which period of control signal is received by the control signal processing unit 1021 and which period of control signal is to be output through. Therefore, communication between the MPU 201 and the control signal processing unit 1021 can be realized with a single signal line and a minimum command length and communication time.

  In this embodiment, the control signal processing unit 1021 of the camera head 10 is relayed. However, instead of the control signal processing unit 1021, an MPU or the like can be provided in the camera head 10 and used instead.

  According to the present embodiment, it is possible to reduce the number of signal lines by utilizing the control signal processing unit 1021 (or MPU) provided in the camera head 10 for the purpose of serializing a video signal. Become. The camera head 10 does not need to be equipped with a new integrated circuit (IC) or the like in order to realize this embodiment. Since the MPU 201 controls the CS signal and the RST signal to each controlled device through the control signal processing unit 1021, a signal line between the MPU 201 and each controlled device is unnecessary. Therefore, the number of signal lines does not increase between the camera head 10 and the CCU 20 regardless of the increase in the number of controlled devices. As a result, the camera head 10 can be effectively reduced in size.

  In addition, since the MPU 201 converts the control signal for each controlled device into a command and makes it common and transmits it to the control signal processing unit 1021, it can control any plurality of controlled devices simultaneously. For example, when the MPU 201 performs the same control on the first sensor element 1011, the second sensor element 1012, and the third sensor element 1013, the communication time can be shortened according to this embodiment.

  Note that the present invention is not limited to the above-described embodiments as they are, and can be embodied by variously modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements according to different embodiments may be appropriately combined.

  DESCRIPTION OF SYMBOLS 10 ... Camera head, 20 ... CCU, 30 ... Camera cable, 101 ... Sensor, 102 ... PLD, 103 ... Memory, 201 ... MPU, 205 ... Video signal processing part, 206 ... Video output part, 1011 ... 1st sensor element DESCRIPTION OF SYMBOLS 1012 ... 2nd sensor element, 1013 ... 3rd sensor element, 1021 ... Control signal process part.

Claims (19)

In a head-separated camera device including an imaging device, a control device that controls the imaging device, and a cable that includes a single control line that supplies a control signal and connects the imaging device and the control device.
The controller is
1st control which outputs the said control signal containing the selection command which notifies the controlled element used as a control object in one or more controlled elements in the said imaging device, and the control data which shows the control content to a control object Means,
The imaging device
Based on the selection command, at least to the controlled element to be controlled, an individual selection command for notifying whether or not it is a control target, and a second control means for transmitting the control data;
A head-separated camera device having   2. The head-separated camera apparatus according to claim 1, wherein the second control unit does not transmit the control data to the controlled element while receiving the selection command from the first control unit.   The first control means transmits the selection command for setting the controlled element to be controlled as a non-control target to the second control means after communication with the controlled element to be controlled ends. Item 2. The head-separated camera device according to Item 1.   2. The head separation type according to claim 1, wherein the first control means transmits the control signal including a communication invalid period between the second control means and the first control means to the second control means. Camera device.   5. The head-separated camera device according to claim 4, wherein when the communication invalid period ends, the second control unit ends transmission of the control data to the controlled element to be controlled.   The head-separated camera device according to claim 1, wherein the controlled element is a sensor element or a memory. In the imaging device of the head separation type camera device connected to the control device via a cable,
From the control device, a control signal including a selection command for notifying the controlled device to be controlled among the one or more controlled devices in the imaging device and control data indicating the control content to the controlled device is received. Receiving means;
Based on the selection command received by the receiving means, at least to the controlled element to be controlled, an individual selection command for notifying whether or not it is a control target, and a control means for transmitting the control data;
An imaging apparatus having   The head imaging apparatus according to claim 7, wherein the controlled element is a sensor element or a memory. In a control device for a head-separated camera device connected to an imaging device via a cable,
Control means for outputting a control signal including a selection command for notifying a controlled element to be controlled among one or more controlled elements in the imaging apparatus, and control data indicating control content to the controlled object;
Control device. In a head-separated camera device having an imaging device and a control device that controls the imaging device,
The controller is
1st control means which outputs the control signal containing the selection command which notifies the controlled element used as a control object in one or more controlled elements in the said imaging device, and the control data which shows the control content to a control object And having
The imaging device
Based on the selection command, at least to the controlled element to be controlled, an individual selection command for notifying whether or not it is a control target, and a second control means for transmitting the control data;
A head-separated camera device having   11. The head-separated camera device according to claim 10, wherein the second control unit does not transmit the control data to the controlled element while receiving the selection command from the first control unit.   The first control means transmits the selection command for setting the controlled element to be controlled as a non-control target to the second control means after communication with the controlled element to be controlled ends. Item 11. The head-separated camera device according to Item 10.   11. The head separation type according to claim 10, wherein the first control means transmits the control signal including a communication invalid period between the second control means and the first control means to the second control means. Camera device.   The head-separated camera device according to claim 13, wherein when the communication invalid period ends, the second control means ends transmission of the control data to the controlled element to be controlled.   The head-separated camera device according to claim 10, wherein the controlled element is a sensor element or a memory. In the imaging device of the head-separated camera device that communicates with the control device,
From the control device, a control signal including a selection command for notifying the controlled device to be controlled among the one or more controlled devices in the imaging device and control data indicating the control content to the controlled device is received. Receiving means;
Based on the selection command received by the receiving means, at least to the controlled element to be controlled, an individual selection command for notifying whether or not it is a control target, and a control means for transmitting the control data;
An imaging apparatus having   The head imaging apparatus according to claim 16, wherein the controlled element is a sensor element or a memory. In a control device for a head-separated camera device that communicates with an imaging device,
Control means for outputting a control signal including a selection command for notifying a controlled element to be controlled among one or more controlled elements in the imaging apparatus, and control data indicating control content to the controlled object;
Control device. Control method for head-separated camera device, comprising: imaging device; control device for controlling imaging device; and cable including one control line for supplying control signal to connect imaging device to control device In
The control apparatus outputs the control signal including a selection command for notifying the controlled element to be controlled among the one or more controlled elements in the imaging apparatus, and control data indicating the control content to the controlled object. And
In the imaging device, based on the selection command, at least the controlled element to be controlled is transmitted as an individual selection command for notifying whether or not it is a control target, and the control data.
Control method for head-separated camera device.

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