JP4374545B2 - Device control system - Google Patents

Description

  The present invention relates to an apparatus control system, and is suitable for application to a recording / reproducing system that records and reproduces video and audio data obtained by photographing a subject with a video camera, for example, with a plurality of video tape recorders.

In a conventional recording / playback system, a plurality of video tape recorders are individually connected to a control device, and video / audio data output from a video camera is recorded by any video tape recorder under the control of the control device. When the recording is completed, the video / audio data is continuously recorded by another video tape recorder. Further, the recording / reproducing system reproduces the video / audio data by any video tape recorder under the control of the control device, and when the reproduction stops, the video / audio data is continuously reproduced by another video tape recorder ( Patent Document 1).
JP 2001-218145 A (3rd page, 4th page, 5th page, 6th page, FIG. 3, FIG. 5)

  However, in the recording / reproducing system having such a configuration, the control device must control these video tape recorders while constantly confirming the states of the plurality of video tape recorders. Therefore, in such a recording / reproducing system, when a plurality of video tape recorders are used, there is a problem that the processing load of the control device is remarkably increased and it is difficult to construct the system easily.

  The present invention has been made in view of the above points, and an object of the present invention is to propose an apparatus control system capable of easily constructing a system.

In order to solve such a problem, in the present invention, in the apparatus control system, a state confirmation signal for requesting confirmation of the state, and a state notification signal for notifying its own state in response to reception of the state confirmation signal, Two connectors having a signal transmission terminal assigned for transmission of the signal, a signal reception terminal assigned for reception of the state confirmation signal and the state notification signal, a state detection unit for continuously detecting its own state, and control parts and are respectively provided, so as to provide a plurality of control target equipment to be connected in series via the two connectors, each different from the control target device via the two connectors of the plurality of control target devices connected When the control unit of the received control target device receives the state confirmation signal transmitted from the other control target device via the signal receiving terminal of one connector, The state confirmation signal transmitted to the other control target device via the signal transmission terminal of the other connector is transmitted to the signal reception terminal of the other connector. And receiving the received status confirmation signal to the other control target device via the signal transmission terminal of one connector and the self and other control transmitted from the other one control target device. When a plurality of status notification signals for notifying the status of the target device are received via the signal reception terminal of one connector, the received status notification signal is transmitted to the other control target via the signal transmission terminal of the other connector. A signal received by the other connector is sent to the device, and a plurality of status notification signals sent from the other control target device to notify the status of the device itself and the other control target device, respectively. When receiving the status notification signal, the status notification signal is received every time the status confirmation signal is received by transmitting the received status notification signal to the other device to be controlled via the signal transmission terminal of one connector. Compare the self status that was previously notified with the latest self status detected by the status detector, and if the previous self status differs from the latest self status, the previous self status is notified The status notification signal to be changed is changed to a status notification signal for notifying the latest self status, and is located at one end and the other end of the serial connection among the plurality of control target devices, and is connected to one other via one connector. When only the control target device is connected and the control unit of the control target device receives the status confirmation signal transmitted from one other control target device via the signal reception terminal of one connector, the received status confirmation signal is received. One connector And a plurality of state notification signals for notifying the states of the device itself and the other control target devices transmitted from the other control target device, respectively, through one signal transmission terminal. When the signal is received via the signal receiving terminal of one connector, the received status notification signal is transmitted to the other one device to be controlled via the signal transmitting terminal of one connector, and the status confirmation signal is received. In addition, comparing the self state previously notified by the state notification signal with the latest self state detected by the state detection unit, if the previous self state and the latest self state are different, The status notification signal for notifying the self status is changed to the status notification signal for notifying the latest self status .

Therefore, in the present invention, when a plurality of control target devices are connected in series, the state confirmation signal is positioned at the other end from the control target device positioned at one end of the series connection in the plurality of control target devices connected in series. An annular signal transmission line formed by connecting a transmission line for transmission to a control target device and a transmission line for transmission from a control target device located at the other end to a control target device located at one end at one end and the other end And a transmission line for transmitting a plurality of state notification signals for notifying each of the states of the plurality of control target devices from a control target device located at one end of the serial connection to a control target device located at the other end. The transmission line to be transmitted from the control target device located at the other end to the control target device located at the one end is circulated through an annular signal transmission line formed by connecting the one end and the other end. It is to be able, just as a result, without any things like to transmit the control signal at an appropriate timing while controlling source to check the status of the control target device at all times, simply transmits a control signal, the controlled object combined with the control target device side in a state in which state the is confirmed while confirming the other control target device can Rukoto to execute the processing corresponding to the control signal.

According to the present invention, the apparatus control system is assigned to transmit a state confirmation signal for requesting confirmation of a state and a state notification signal for notifying its own state in response to reception of the state confirmation signal. Two connectors having a signal transmission terminal, a signal reception terminal assigned to receive a state confirmation signal and a state notification signal, a state detection unit for continuously detecting its own state, and a control unit, respectively. A plurality of control target devices connected in series via two connectors, and different control target devices are connected to each other through two connectors among the plurality of control target devices. When the control unit receives the state confirmation signal transmitted from the other device to be controlled through the signal receiving terminal of one connector, the received state confirmation signal is transmitted to the other device. When the state confirmation signal transmitted from the other control target device is transmitted to the other control target device via the signal transmission terminal of the connector and received via the signal reception terminal of the other connector, the reception is performed. The status confirmation signal is transmitted to the other control target device via the signal transmission terminal of one connector, and the statuses of the self and other control target devices transmitted from the other control target device are notified respectively. When the plurality of status notification signals are received via the signal receiving terminal of one connector, the received status notification signal is transmitted to the other other control target device via the signal transmission terminal of the other connector. When receiving a plurality of status notification signals transmitted from the other control target device and reporting the statuses of the self and other control target devices via the signal receiving terminal of the other connector, Each time the status confirmation signal is received by transmitting the received status notification signal to the other device to be controlled via the signal transmission terminal of one connector, the self status notified first by the status notification signal Is compared with the latest self state detected by the state detection unit, and if the previous self state is different from the latest self state, the state notification signal for notifying the previous self state is Change to a status notification signal for notifying its own status, and control by connecting only one other control target device via one connector, located at one end and the other end of a series connection among a plurality of control target devices When the control unit of the target device receives the state confirmation signal transmitted from one other control target device via the signal reception terminal of one connector, the received state confirmation signal is sent to the signal transmission terminal of one connector. Through other A plurality of status notification signals that are transmitted from one other control target device and that respectively notify the status of the device itself and the other control target device are transmitted through one signal receiving terminal of one connector. Upon receipt, the received status notification signal is transmitted to another device to be controlled via the signal transmission terminal of one connector, and every time a status confirmation signal is received, the status notification signal is notified first. Compared with the latest self status detected by the status detector, the status notification signal that notifies the previous self status when the previous self status is different from the latest self status and by which is adapted to change the state signal representing the latest of its own state, when a plurality of control target devices are connected in series, the state identified in the plurality of control target devices that are the series Is transmitted from the control target device located at one end of the series connection to the control target device located at the other end, and from the control target device located at the other end to the control target device located at one end. The transmission line is circulated through an annular signal transmission line formed by connecting one end and the other end and transmitted, and a plurality of state notification signals for notifying the states of a plurality of control target devices are also connected to one end of the series connection. One end and the other end of the transmission line for transmitting from the control target device located to the control target device located at the other end and the transmission line transmitting from the control subject device located at the other end to the control target device located at one end linked to circulate in an annular signal transmission line formed to be able to transmit, as a result, to the control target device, in accordance with the state of being the confirmation while check the state of the physician each other control No. process can be run in accordance with, even in the case of using a plurality of control target devices in the system construction, to the control source, always transmits a control signal at an appropriate timing to confirm the status of the control target device By doing so, it is possible to avoid a significant increase in the processing load during control, and thus it is possible to realize a device control system that can easily construct a system even when a plurality of control target devices are used.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  In FIG. 1, reference numeral 1 denotes a recording / reproducing system to which the present invention is applied as a whole, and a plurality of video tape recorders 2A to 2D and a single video camera 3 are sequentially connected in series via device connection interfaces 4A to 4D. Is built. Each video tape recorder 2A to 2D has the same configuration, and is provided with a pair of male and female connectors. The video camera 3 is also provided with a pair of male and female connectors formed similarly to the pair of connectors provided on the video tape recorders 2A to 2D.

  In this case, the first video tape recorder 2A corresponds to, for example, a male connector (hereinafter referred to as a first connector) provided in the video tape recorder 2A and a video camera 3 corresponding thereto. A device connection interface comprising a female connector (hereinafter referred to as a second connector) and a connector cable formed by providing first and second connectors at one end and the other end of one cable. It is connected to the video camera 3 via 4A. In the connector cable, the corresponding terminals of the first and second connectors at one end and the other end are electrically connected to each other via transmission lines housed together in one cable. The video camera 3 also has a device connection interface 4B comprising a first connector provided in the video camera 3, a corresponding second connector provided in the second video tape recorder 2B, and a connector cable. And is connected to the second video tape recorder 2B. Similarly, the second and third video tape recorders 2B and 2C, and the third and fourth video tape recorders 2C and 2D also have their corresponding first and second connectors and connector cables, respectively. Are connected via the device connection interfaces 4C and 4D.

  Incidentally, in the video camera 3, for example, the first video tape recorder 2A is directly connected to the video camera 3 through the first and second connectors using only the first and second connectors corresponding to each other as the device connection interface. It can also be connected. In addition, a camera adapter (not shown) provided with first and second connectors can be directly connected to the video camera 3 via the corresponding first and second connectors. In this case, the camera adapter is formed so that a microphone or the like can be connected. Therefore, when the camera adapter is connected, the video camera 3 can take in audio data obtained by collecting surrounding sounds via, for example, the microphone 5 via the camera adapter. Further, the video tape recorders 2A to 2D can directly connect video adapters (not shown) provided with first and second connectors via the corresponding first and second connectors. In this case, the video adapter includes a data output terminal for outputting video data and audio data to a monitor and a speaker, a data input terminal for inputting video data and audio data supplied from another playback device, and the like. Input / output terminals and the like are provided. Therefore, the video tape recorders 2A to 2D, when a video adapter is connected, output video data and audio data to a monitor and a speaker via the video adapter, or video data and audio supplied from an external playback device. Data can be imported.

  The camera adapter is connected to the video camera 3 by one of the first or second connectors, and the first and second corresponding to each other between the camera adapter and the video tape recorders 2A to 2D (or video adapters). It is also possible to connect to these video tape recorders 2A to 2D (or video adapters) via a device connection interface consisting of the above-mentioned connectors and connector cables (or only the corresponding first and second connectors). The video adapter is connected to the video tape recorders 2A to 2D by one of the first or second connectors, and the video adapter and the other video tape recorders 2A to 2D or the video camera 3 correspond to each other. Connect to these other video tape recorders 2A to 2D or the video camera 3 through a device connection interface comprising the first and second connectors and the connector cable (or comprising only the first and second connectors corresponding to each other). You can also Further, the video tape recorders 2A to 2D are connected to the video adapter by one of the first or second connectors, and the video tape recorders 2A to 2D, other video adapters and video tape recorders 2A to 2D, video These other video adapters and video via a device connection interface comprising the first and second connectors and connector cables corresponding to the camera 3 and the like (or comprising only the first and second connectors corresponding to each other). It can also be connected to the tape recorders 2A to 2D, the video camera 3, and the like.

  By the way, as shown in FIG.2 and FIG.3, the 1st connector 10 has the substantially rectangular parallelepiped connector main-body part 11. As shown in FIG. The connector body 11 has one wide side surface 11A attached to one end of a cable provided in the housing of the video tape recorders 2A to 2D and the video camera 3 and the connector cable. The connector main body 11 has a connector connection guide plate 12 that is formed by bending a plate-like member into a cylindrical shape on the other side surface 11B having a wide width. A substantially trapezoidal portion (hereinafter referred to as a terminal arrangement surface) 11C surrounded by the connector connection guide plate 12 on the side surface 11B of the connector main body 11 has a relatively thick predetermined diameter on the bottom side of the trapezoid. Seven first terminals 13A to 13G made of sex pins are arranged in a line substantially in parallel with the longitudinal direction of the terminal arrangement surface 11B (hereinafter referred to as the arrangement surface longitudinal direction). Further, on the terminal arrangement surface 11C, on the upper side of the trapezoid, second terminals 14A to 14Q made of 17 conductive pins having a diameter smaller than that of the first terminals 13A to 13G are arranged in a row substantially parallel to the longitudinal direction of the arrangement surface. It is planted side by side.

  On the other hand, as shown in FIG. 4, the second connector 15 is not particularly shown, but one of the wide side surfaces of the rectangular parallelepiped connector body 16 is the housing of the video tape recorders 2A to 2D and the video camera 3, It is attached to the other end of the cable provided in the connector cable. In addition, a connector connection guide plate 17 that fits with the connector connection guide plate 12 of the first connector 10 is suspended from the other wide side surface 16 </ b> A of the connector main body 16. The second connector 15 is connected to the first connector 10 on the substantially trapezoidal terminal arrangement surface 16B surrounded by the connector connection guide plate 17 on the side surface 16A of the connector main body 16. Third and fourth terminals 18A to 18G and 19A to 19Q are formed by conductive insertion holes corresponding to the terminals 13A to 13G and the second terminals 14A to 14Q, respectively.

  The first and second connectors 10 and 15 are, for example, three second terminals corresponding to each other among the second and fourth terminals 14A to 14Q and 19A to 19Q arranged in a row. 14H to 14J and three fourth terminals 19H to 19J are fixedly assigned to power supply terminals for supplying power. For this reason, the video tape recorders 2A to 2D and the video camera 3 can be operated with electric power supplied from a battery provided therein or from electric power supplied from an external commercial power source. It is also possible to operate with power supplied via the connector 10 and the power supply terminals of the second connector (that is, the second terminals 14H to 14J and the fourth terminals 19H to 19J).

  Further, as shown in FIG. 5, the first and second connectors 10 and 15 are, for example, at the center positions corresponding to each other among the first and third terminals 13A to 13G and 18A to 18G arranged in a row. One first terminal 13D and one third terminal 18D are each fixedly assigned to a ground terminal for grounding. In this case, the length of the first terminal 13D assigned to the ground terminal is selected to be longer than the lengths of the other first terminals 13A to 13C and 13E to 13G. Therefore, the video tape recorders 2A to 2D and the video camera 3 (or video adapter or camera adapter) are connected to the other video tape recorders 2A to 2D and video camera 3 (or video adapter or camera adapter) and the device connection interfaces 4A to 4D. First, after common grounding via the ground terminals (ie, the first terminal 13D and the third terminal 18D), the power supply terminals (ie, the second terminals 14H to 14J and Electric power is supplied through the fourth terminals 19H to 19J). As a result, the video tape recorders 2A to 2D and the video camera 3 (or video adapter or camera adapter) are defined in the circuit inside the other video tape recorders 2A to 2D and video camera 3 (or video adapter or camera adapter) to be connected. It is avoided in advance that the above current flows and breaks down.

  Further, the first and second connectors 10 and 15 include the first and third terminals 13A to 13G and 18A to 18G, all of the remaining first and third terminals 13A to 13C and 13E to 13G, 18A to 18C, and 18E to 18G are fixedly assigned to data transmission / reception terminals for video / audio data transmission / reception according to the format of HD-SDI (High Definition Serial Digital Interface) standard. In this case, in the first connector 10, among the first terminals 13A to 13C and 13E to 13G assigned to the data transmission / reception terminals, for example, the first and second, the sixth and the seventh counted from one end. The four first terminals 13A and 13B and 13F and 13G transmit the video / audio data in the direction in which the video / audio data is transmitted from the video camera 3 to the video tape recorders 2A to 2D (hereinafter referred to as the first direction). Is assigned to a data transmission / reception terminal (hereinafter referred to as a first direction data transmission terminal). The second connector 15 also has a third terminal 18A corresponding to the first direction data transmission terminal of the first connector 10 among the third terminals 18A to 18C and 18E to 18G assigned to the data transmission / reception terminals. And 18B and 18F and 18G (that is, the first and second, and the sixth and seventh four third terminals 18A and 18B and 18F and 18G counting from one end) are the first direction data transmission terminals. Assigned to.

  On the other hand, in the first connector 10, of the first terminals 13A to 13C and 13E to 13G assigned to the data transmission / reception terminals, for example, two adjacent to the first terminal 13D assigned to the ground terminal. Data transmission / reception for causing the first terminals 13C and 13E to transmit the video / audio data in the direction in which the video / audio data is transmitted from the video tape recorders 2A to 2D to the video camera 3 (hereinafter referred to as the second direction). It is assigned to a terminal (hereinafter, this is particularly referred to as a second direction data transmission terminal). The second connector 15 also has a third terminal 18C corresponding to the second direction data transmission terminal of the first connector 10 among the third terminals 18A to 18C and 18E to 18G assigned to the data transmission / reception terminals. And 18E (that is, two third terminals 18C and 18E adjacent to the third terminal 18D assigned to the ground terminal) are assigned to the second direction data transmission terminals.

  The video tape recorders 2A to 2D and the video camera 3 (or video adapter and camera adapter) are connected to the other video tape recorders 2A to 2D and video camera 3 (or video adapter and camera adapter) via the device connection interfaces 4A to 4D. All the four first direction data transmission terminals (that is, the first terminals 13A and 13B and 13F and 13G and the third terminals 18A and 13B and 18F and 18G), or any three of them. In addition, video / audio data of various formats can be transmitted in the first direction by selectively using any two of them. That is, the video tape recorders 2A to 2D and the video camera 3 (or video adapter or camera adapter) use all four first direction data transmission terminals, for example, via two first direction data transmission terminals. : 4: 4 Odd data constituting 60P video / audio data is transmitted in the first direction together with the corresponding audio data, and the remaining two first direction data transmission terminals are used for even. Data can be transmitted in the first direction along with corresponding audio data. Also, the video tape recorders 2A to 2D and the video camera 3 (or video adapter or camera adapter) are connected to the 4: 4: via, for example, two first direction data transmission terminals among the four first direction data transmission terminals. 4. Odd data constituting video / audio data in which the number of frames per second is reduced as compared with the 60P format is transmitted in the first direction together with the corresponding audio data, and via the remaining two first direction data transmission terminals. Thus, even data constituting the video / audio data can be transmitted together with the corresponding audio data in the first direction.

  Furthermore, the video tape recorders 2A to 2D and the video camera 3 (or a video adapter or a camera adapter) are connected to the 4: 4: via, for example, two first direction data transmission terminals among the four first direction data transmission terminals. 4 format video / audio data is transmitted in the first direction, and other video / audio data in 4: 4: 4 format is transmitted in the first direction via the remaining two first direction data transmission terminals. it can. Furthermore, the video tape recorders 2A to 2D and the video camera 3 (or a video adapter or a camera adapter) are connected to the 4: 4: via, for example, two first direction data transmission terminals among the four first direction data transmission terminals. 4 format audio / video data is transmitted in the first direction, and 2 types of 4: 2: 2 format audio / video data is transmitted in the first direction via the remaining two first direction data transmission terminals. You can also Furthermore, the video tape recorders 2A to 2D and the video camera 3 (or video adapter or camera adapter) receive four types of video / audio data in 4: 2: 2 format via four first direction data transmission terminals, respectively. It can also be transmitted in one direction.

  When the video tape recorders 2A to 2D and the video camera 3 (or the video adapter or the camera adapter) use three of the four first direction data transmission terminals, for example, via the two first direction data transmission terminals. The 4: 4: 4 format video / audio data is transmitted in the first direction, and the 4: 2: 2 format video / audio data is transmitted in the first direction via the remaining one first direction data transmission terminal. Can be transmitted.

  Furthermore, when two of the four first direction data transmission terminals are used in the video tape recorders 2A to 2D and the video camera 3 (or video adapter or camera adapter), the two first direction data transmission terminals are used. Thus, video / audio data in 4: 4: 4 format can be transmitted in the first direction. In addition, the video tape recorders 2A to 2D and the video camera 3 (or video adapter or camera adapter) have a 4: 2: 2 via one first direction data transmission terminal out of two first direction data transmission terminals. The odd data constituting the 60P format video / audio data is transmitted along with the corresponding audio data in the first direction, and the even data is transmitted along with the corresponding audio data via the remaining one first direction data transmission terminal in the first direction. Can also be transmitted. Furthermore, the video tape recorders 2A to 2D and the video camera 3 (or video adapter or camera adapter) receive two types of video / audio data in the 4: 2: 2 format through the two first direction data transmission terminals, respectively. It can also be transmitted in one direction.

  On the other hand, the video tape recorders 2A to 2D and the video camera 3 (or video adapters and camera adapters) are connected to the other video tape recorders 2A to 2D and video cameras 3 (or video adapters and camera adapters) with the device connection interfaces 4A to 4D. When connected, the video / audio data in the 4: 4: 4 format can be transmitted in the second direction via the two second direction data transmission terminals. In addition, the video tape recorders 2A to 2D and the video camera 3 (or video adapter or camera adapter) have a 4: 2: 2 through one second direction data transmission terminal out of two second direction data transmission terminals. The odd data constituting the 60P format audio / video data is transmitted in the second direction together with the corresponding audio data, and the even data is transmitted in the second direction together with the corresponding audio data via the remaining one second direction data transmission terminal. Can also be transmitted. Furthermore, the video tape recorders 2A to 2D and the video camera 3 (or video adapter or camera adapter) receive two types of video / audio data in 4: 2: 2 format through the two second direction data transmission terminals, respectively. Transmission in two directions is also possible.

  Incidentally, the first and second connectors 10 and 15 are, for example, the first and second terminals counted from one end corresponding to each other among the second and fourth terminals 14A to 14Q and 19A to 19Q arranged in a row. The video tape recorder 2A in which the two second terminals 14A and 14B and the two fourth terminals 19A and 19B located in the second position are connected in series with various signals such as control signals via a pair of balanced transmission lines. 1 to 2D and the video camera 3 are transmitted in one direction (hereinafter referred to as one connection direction) from one connection start end (for example, video tape recorder 2A) to the other connection end (for example, video tape recorder 2D). Is fixedly assigned to the first one-way signal transmission terminal. The first and second connectors 10 and 15 are, for example, the third and fourth terminals counted from one end among the second and fourth terminals 14A to 14Q and 19A to 19Q arranged in a row. A plurality of video tapes in which two second terminals 14C and 14D located in the second position and two fourth terminals 19C and 19D are connected in series with various signals such as control signals via a pair of balanced transmission lines. Fixed to the first other-direction signal transmission terminal for transmitting in the other direction from the other connection terminal to the recorder 2A to 2D and the video camera 3 in the other direction (hereinafter referred to as connection other direction). Assigned to.

  Further, the first and second connectors 10 and 15 are, for example, 16th and 17th counted from one end corresponding to each other among the second and fourth terminals 14A to 14Q and 19A to 19Q arranged in a row. The second second terminals 14P and 14Q and the two fourth terminals 19P and 19Q located at the second position are used to transmit various signals such as control signals in one direction of connection via a pair of balanced transmission lines. 2 are fixedly assigned to the one-way signal transmission terminals. Further, the first and second connectors 10 and 15 are, for example, 14th and 15th counting from one end corresponding to each other among the second and fourth terminals 14A to 14Q and 19A to 19Q arranged in a row. The second second terminals 14N and 14O located at the second position and the two fourth terminals 19N and 19O are connected to each other through a pair of balanced transmission lines to transmit various signals such as control signals in the other direction. 2 are fixedly assigned to the two-way signal transmission terminals.

  Further, the first and second connectors 10 and 15 are located at the fifth position of the second and fourth terminals 14A to 14Q and 19A to 19Q arranged in one row, for example, counting from one end corresponding to each other. For example, one second terminal 14E and one fourth terminal 19E are fixedly assigned to a synchronization signal transmission terminal for transmitting and receiving a synchronization signal of video data of 30 frames per second. Further, the first and second connectors 10 and 15 are located at the sixth position of the second and fourth terminals 14A to 14Q and 19A to 19Q arranged in one row, for example, counting from one end corresponding to each other. One second terminal 14F and one fourth terminal 19F are fixedly assigned to spare transmission / reception terminals that can be appropriately assigned to transmission / reception of other various signals.

  In addition, the first and second connectors 10 and 15 are counted from one end of the second and fourth terminals 14A to 14Q and 19A to 19Q arranged in one row, for example, corresponding to one end. One second terminal 14G and one fourth terminal 19G located next (that is, adjacent to the power supply terminal) are fixedly assigned to device identification terminals for identifying a connection partner. . Each of the video tape recorders 2A to 2D and the video camera 3 (or a video adapter or a camera adapter) internally generates a voltage signal having a predetermined voltage value for self-identification. Accordingly, the video tape recorders 2A to 2D and the video camera 3 (or video adapter and camera adapter) are connected to the other video tape recorders 2A to 2D and video camera 3 (or video adapter and camera adapter) via the device connection interfaces 4A to 4D. Then, the voltage signal generated inside the connection partner is taken in via the device identification terminals (that is, the second terminal 14G and the fourth terminal 19G). As a result, the video tape recorders 2A to 2D and the video camera 3 (or video adapter and camera adapter) connect the connection partners to the video tape recorders 2A to 2D and the video camera 3 (in accordance with the voltage value of the voltage signal received from the connection partner. Or a video adapter or a camera adapter).

  Since the video tape recorders 2A to 2D and the video camera 3 (or video adapter or camera adapter) have different functions and types of signals to be transmitted / received depending on the connection partner, the connection with the connection partner is determined according to the identified connection partner. The functional allocation to the remaining second and fourth terminals 14K to 14M and 19K to 19M in the first and second connectors 10 and 15 used in the above is set.

  That is, the video tape recorders 2A to 2D and the video camera 3 (or video adapter and camera adapter) are connected to the connection partner when the connection partner is another video tape recorder 2A to 2D and video camera 3 (or video adapter). In the first and second connectors 10 and 15 used in the first and second connectors, two second terminals 14K and 14L located at the eleventh and twelfth positions from one end and two fourth terminals 19K and 19L is assigned to a spare transmission / reception terminal that can be appropriately assigned to transmission / reception of other various signals. In addition, the video tape recorders 2A to 2D and the video camera 3 (or video adapter or camera adapter) are connected to each other in the first and second connectors 10 and 15 used for connection with a connection partner, for example, from one end. One second terminal 14M and one fourth terminal 19M located at the thirteenth position are assigned to, for example, synchronization signal transmission terminals for transmitting and receiving a synchronization signal of video data of 24 frames per second. .

  On the other hand, when the connection partner is a camera adapter (or video camera 3), the video camera 3 (or camera adapter) is connected to the first and second connectors 10 and 15 used for connection with the connection partner. Corresponding to each other, for example, one second terminal 14K and one fourth terminal 19K, which are located 11th from one end, are connected to L (Left) channel data and R (Right) constituting audio data. ) Identification information for identifying channel data and a synchronization signal for each channel are allocated to identification information transmission terminals for transmitting from the camera adapter to the video camera 3. The video camera 3 (or camera adapter) has a second terminal located at the twelfth position from one end of the first and second connectors 10 and 15 used for connection with a connection partner. For example, 14L and one fourth terminal 19L are assigned to a synchronization signal transmission terminal for transmitting a synchronization signal of audio data from the camera adapter to the video camera 3. Furthermore, the video camera 3 (or camera adapter) has one first and second connectors 10 and 15 used for connection with a connection partner, for example, corresponding to each other, for example, one thirteenth position counted from one end. For example, the second terminal 14M and one fourth terminal 19M are assigned to data transmission terminals for transmitting audio data from the camera adapter to the video camera 3 side.

  In this manner, the video tape recorders 2A to 2D and the video camera 3 (or video adapter or camera adapter) assign signals to be transmitted to the terminals of the first and second connectors 10 and 15 according to the connection partner. By appropriately changing, signal transmission according to the function of the connection partner is realized by effectively using limited terminals.

  Here, as shown in FIG. 6, a controller 25 capable of inputting various control commands such as a recording start command and a recording stop command can be connected to the video tape recorders 2A to 2D. Yes. The controller 25 can input various control commands for directly controlling the video tape recorders 2A to 2D to which the controller 25 is connected, and other videos connected in series to the video tape recorders 2A to 2D. Various control commands for controlling the tape recorders 2A to 2D and the video camera 3 (and video adapter and camera adapter) can also be input.

  When the controller 25 is connected, the video tape recorders 2A to 2D become control sources for the other video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter). Various programs stored in a ROM (Read Only Memory) 28 by a central processing unit (CPU: Central Processing Unit) 27 are expanded on a RAM (Random Access Memory) 29 in accordance with various control instructions input via the CPU. Then, according to the developed various programs, the entire system is comprehensively controlled to execute various processes.

  In this case, for example, prior to the construction of the recording / reproducing system 1, the central processing unit 27 stores the device identification information unique to the video tape recorders 2A to 2D in the RAM 29 in advance, and constructs the recording / reproducing system 1. Device identification information unique to all other video tape recorders 2A to 2D and video camera 3 (video adapter and camera adapter) used is also stored in advance.

  When the central processing unit 27 detects that another video tape recorder 2A to 2D or video camera 3 (or a video adapter or a camera adapter) is connected to its own video tape recorder 2A to 2D, the central processing unit 27 receives a connection device confirmation request signal. Is transmitted from the input / output processing unit 30 to the other video tape recorders 2A to 2D and the video camera 3 (and video adapter and camera adapter) via the device connection interfaces 4A to 4D. As a result, the central processing unit 27 receives the device identification information transmitted from the other video tape recorders 2A to 2D and the video camera 3 (or the video adapter and the camera adapter) via the device connection interfaces 4A to 4D. 30 via. In this way, the central processing unit 27 compares the received device identification information with the device identification information in the RAM 29, and in accordance with the obtained comparison result, the normal processing unit registered in advance for its own video tape recorders 2A to 2D. It is determined whether or not the device is connected. At this time, the central processing unit 27 also circulates and transmits the connection device confirmation request signal to all the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) used for system construction. . Therefore, the central processing unit 27 also receives device identification information returned in response to reception of connection device confirmation request signals from all the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) used for system construction. All the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) are received through the input / output processing unit 30, and it is determined whether or not they are legitimate devices.

  In addition, the central processing unit 27 continuously detects the presence / absence of execution of various processes in the video tape recorders 2A to 2D and the execution status of the various processes as its own state by the operation state detection unit 31, and the detected self The state information indicating the state is stored in the RAM 29 and the contents thereof are updated as appropriate. In addition, the central processing unit 27 generates a status confirmation signal for confirming the status of the other video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter), and also adds status information indicating its own status to itself. Is added to the device identification information to generate a status notification signal for notifying another device of its own status. Then, the central processing unit 27 sends the state confirmation signal and its own state notification signal from the input / output processing unit 30 to the other video tape recorders 2A to 2D and the video camera 3 (video adapters and video adapters) via the device connection interfaces 4A to 4D. To the camera adapter).

  In this way, the central processing unit 27 is connected to the video tape recorders 2A to 2D and other video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) connected in series. A state notification signal is circulated and transmitted. Then, the central processing unit 27 notifies the other video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) of the latest status of the other party in response to the reception of the status confirmation signal. A signal is generated, and the generated state notification signal is also circulated and transmitted together with the state confirmation signal.

  As a result, the central processing unit 27 checks the status of all video tape recorders 2A to 2D and video cameras 3 (video adapters and camera adapters) connected in series, and other video tape recorders 2A to 2D and video cameras. 3 (video adapter and camera adapter) can check the status of all video tape recorders 2A to 2D and video camera 3 (video adapter and camera adapter).

  The central processing unit 27 designates a device to be controlled (that is, other video tape recorders 2A to 2D, a video camera 3, a video adapter, and a camera adapter) via the controller 25, and also handles the designated device. When a control command is input, the control signal is generated by adding the device identification information of the device to be controlled (that is, the device identification information of the normal device already confirmed) to the control command. As a result, the central processing unit 27 transmits the control signal from the input / output processing unit 30 to the control target device via the device connection interfaces 4A to 4D.

  On the other hand, even when the controller 25 is not connected to its own video tape recorders 2A to 2D, the central processing unit 27, like the above, all the video tape recorders 2A to 2D and video cameras 3 ( The device identification information is acquired for the video adapter and the camera adapter) to determine whether the device is a legitimate device. Further, when the controller 25 is not connected to its own video tape recorders 2A to 2D, the central processing unit 27 transmits a control signal from the other video tape recorders 2A to 2D via the device connection interfaces 4A to 4D. While receiving the control signal via the input / output processing unit 30, the control signal addressed to itself is specified based on the device identification information added to the received control signal. The central processing unit 27 reads out various programs stored in advance from the ROM 28 in accordance with a control signal addressed to the CPU 27 and develops them on the RAM 29, whereby the overall processing is comprehensively controlled according to the developed programs. Various processes according to the signal are executed.

  In this way, the central processing unit 27 records, for example, as control signals input directly via the controller 25 or indirectly via other video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter). When the start signal is received, the video / audio data transmitted from the other video tape recorders 2A to 2D, the video camera 3 or the like is received via the input / output processing unit 30, and the received video / audio data is received in the buffer memory 32. To the recording / reproducing unit 33. As a result, the central processing unit 27 records the video / audio data on the video tape by the recording / reproducing unit 33. Incidentally, the central processing unit 27 can record the video / audio data as it is according to the control signal. However, when the video / audio data is temporarily stored in the buffer memory 32, for example, the number of frames per second is reduced. You can also convert the format to videotape.

  When the central processing unit 27 receives, for example, a reproduction start signal as a control signal input directly or indirectly via the controller 25, the central processing unit 27 reproduces video / audio data from the video tape by the recording / reproducing unit 33. The central processing unit 27 then records the video / audio data from the input / output processing unit 30 to other video tape recorders 2A to 2D, video adapters, etc. that perform recording processing or output processing to the monitor and speakers. Transmit via the connection interfaces 4A to 4D.

  On the other hand, as shown in FIG. 7, the video camera 3 expands a basic program such as an OS and various application programs stored in the ROM 41 in the central processing unit 40 in advance on the RAM 42, and the expanded basic program and various applications. Various processes are executed by controlling the entire system according to the program. As a result, the central processing unit 40, as in the case of the video tape recorders 2A to 2D described above, identifies apparatus identification information for all video tape recorders 2A to 2D and video cameras 3 (video adapters and camera adapters) used for system construction. To determine whether the device is a legitimate device. Further, the central processing unit 40 continuously detects whether or not various processes are executed in its own video camera 3 and the execution status of various processes as its own state by the operation state detection unit 43, and the detected own state is detected. The state information shown is stored in the RAM 42 and the contents thereof are updated as appropriate. When the central processing unit 40 receives the status confirmation signal transmitted from the control video tape recorders 2A to 2D via the device connection interfaces 4A to 4D via the input / output processing unit 44, the central processing unit 40 stores the status confirmation signal in the RAM 42 accordingly. Based on the stored state information, a state notification signal for notifying the latest self state is generated. Thus, the central processing unit 40 transmits the status notification signal from the input / output processing unit 44 to the other video tape recorders 2A to 2D (or video adapter and camera adapter) via the device connection interfaces 4A to 4D. Notify the status.

  When the central processing unit 40 receives, for example, an imaging start signal as a control signal transmitted from the control source video tape recorders 2A to 2D via the device connection interfaces 4A to 4D, via the input / output processing unit 44, the imaging unit The subject is imaged via 45 and the resulting video data is sent to the data processing unit 46. Then, the central processing unit 40 takes in the audio data consisting of audio around the subject and transmitted from the external camera adapter to the data processing unit 46 via the input / output processing unit 44 at this time. As a result, the central processing unit 40 synchronizes the video data and the audio data with the data processing unit 46 to obtain the video / audio data, and this is converted from the input / output processing unit 44 to the video tape recorders 2A to 2D via the device connection interfaces 4A to 4D. (Or video adapter and camera adapter).

  Next, the transmission of the state confirmation signal and the state notification signal in the recording / reproducing system 1 will be described with reference to FIGS. However, in the recording / reproducing system 1, in the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter), a signal transmission line for transmitting a state confirmation signal in advance (hereinafter referred to as a confirmation signal transmission line). 50 and a signal transmission line (hereinafter referred to as a notification signal transmission line) 51 for transmitting a state notification signal can be set to be used together or individually. Therefore, the case where the confirmation signal transmission line 50 and the notification signal transmission line 51 are formed first will be described below, and then the case where the confirmation signal transmission line 50 and the notification signal transmission line 51 are separately formed. explain.

  As shown in FIG. 8, the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) are recorded in a state where they are set so as to be used as the confirmation signal transmission line 50 and the notification signal transmission line 51. A first unidirectional signal transmission line extending in one direction of connection is formed via the first unidirectional signal transmission terminals of the first and second connectors 10 and 15 when connected in series by the construction of the reproduction system 1 At the same time, a first other direction signal transmission line extending in the other direction of connection via the first other direction signal transmission terminal is formed. The central processing unit 27 of the video tape recorder 2A located at the connection start end among the video tape recorders 2A to 2D and the video camera 3 connected in series apparently uses the first other-direction signal transmission line as the first in the internal processing. Connect to the unidirectional signal transmission line. The central processing unit 27 of the video tape recorder 2D located at the connection end also apparently connects the first one-way signal transmission line to the first other-direction signal transmission line by internal processing. Thus, the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) form one annular confirmation signal transmission line 50 also as the notification signal transmission line 51.

  Note that the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) are actually balanced transmission paths via a pair of first one-way signal transmission terminals in the first and second connectors, respectively. A first unidirectional signal transmission line is formed, and a first unidirectional signal transmission line that is a balanced transmission line is formed via a pair of first unidirectional signal transmission terminals. A confirmation signal transmission line 50 formed of a balanced transmission line is formed by the signal transmission line and the first other-direction signal transmission line. However, the pair of first one-way signal transmission terminals transmits the state confirmation signal via the pair of balanced transmission lines as a mechanism for detecting the value of the state confirmation signal without being affected by the common mode noise. In addition, as a mechanism for detecting the value of the state notification signal without being affected by the common mode noise, the state notification signal is provided so as to be transmitted through a pair of balanced transmission lines. Apparently, it can be regarded as one terminal. Similarly, the pair of first direction signal transmission terminals transmits the state confirmation signal via the pair of balanced transmission lines as a mechanism for detecting the value of the state confirmation signal without being affected by the common mode noise. As a mechanism for detecting the value of the status notification signal without being affected by the common mode noise, the status notification signal is transmitted via a pair of balanced transmission lines. Therefore, it can be regarded as one terminal apparently. The confirmation signal transmission line 50 formed of a pair of balanced transmission lines is also used as a countermeasure against the common mode noise described above, and cannot transmit different types of signals at the same time. For this reason, in FIG. 8, the confirmation signal transmission line 50 is apparently regarded as one transmission line.

  In this state, the central processing unit 27 of the control source, for example, the video tape recorder 2A to which the controller 25 is connected, circulates the state confirmation signal together with its own state notification signal via the confirmation signal transmission line 50 and transmits it. . Further, when the central processing units 27 and 40 of the other video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) receive the state confirmation signal transmitted via the confirmation signal transmission line 50, they update their latest information. A state notification signal indicating this state is generated and transmitted to the subsequent stage through the confirmation signal transmission line together with the state confirmation signal.

  In this way, the central processing units 27 and 40 of the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) are circulated and transmitted to the other video tape recorders 2A to 2D and video by the status notification signal transmitted in a circulating manner. Check the status of the camera 3 (video adapter and camera adapter). In addition, each time the central processing units 27 and 40 of the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) receive the status confirmation signal, the central processing units 27 and 40 compare their own status with the status at that time. When the states are different from each other, a state notification signal indicating the latest state is generated and overwritten on the signal being transmitted. In this way, the central processing units 27 and 40 always notify the central processing units 27 and 40 of the other video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) of the latest state of themselves. it can.

  The central processing unit 27 of the control source video tape recorder 2A also transmits various control signals such as a reproduction start signal and a reproduction stop signal via the confirmation signal transmission line 50. As a result, the central processing units 27 and 40 of the other video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) receive the various control signals transmitted via the confirmation signal transmission line 50 each time. Then, the control signal addressed to itself is specified based on the device identification information added thereto. Then, the central processing units 27 and 40 of the other video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) copy and capture the control signal addressed to themselves, execute corresponding processing, and The control signal is transmitted again through the confirmation signal transmission line 50 together with a response signal indicating reception of the control signal.

  In this way, the central processing units 27 and 40 of the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) receive a control signal directly or indirectly via the controller 25, for example, video tape. The audio / video data is reproduced from the first audio data, and the reproduced audio / video data is transmitted via the first direction data transmission line 55 formed by the first direction data transmission terminals of the first and second connectors 10 and 15, In addition, various processes such as transmission via the second direction data transmission line 56 formed by the second direction data transmission terminal are performed.

  In the recording / reproducing system 1, video / audio data obtained by photographing a subject with the video camera 3 is recorded by the video tape recorders 2A to 2D, or any one of the video tape recorders 2A to 2D is another video tape recorder. When recording video / audio data reproduced by 2A to 2D, or when the video camera 3 shoots a subject to record video / audio data on a video tape by any of the video tape recorders 2A to 2D, etc. In some cases, processing is executed in cooperation between devices. In such a case, the central processing units 27 and 40 of the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) can always check the status of the cooperation partner device by the status notification signal. It is possible to prepare to execute its own processing without delay in accordance with the state, or to start the processing in conjunction with the accuracy. For this reason, the central processing unit 27 of the video tape recorder 2A as the control source always checks the states of the other video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter), and executes processing in an optimum state. Thus, it is not necessary to control at an appropriate timing, and even if it is a control source, a control signal is simply transmitted to the other video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter). The processing load of control can be greatly reduced.

When the central processing unit 27 of the control source video tape recorder 2A receives the state confirmation signal and the various control signals transmitted via the confirmation signal transmission line 50, the state confirmation signal and the various control signals are transmitted to the other video tape recorders. It is possible to collectively confirm that data is being transmitted to 2A to 2D and the video camera 3 (video adapter and camera adapter). When the central processing unit 27 receives a status notification signal or a response signal transmitted via the confirmation signal transmission line 50, the other video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) confirm the status. It can also be confirmed that signals and various control signals have been properly received. Since the central processing unit 27 of the video tape recorder 2A as the control source also uses the confirmation signal transmission line 50 as the notification signal transmission line 51 at this time, a plurality of video tape recorders, for example, as in the conventional control device The video tape recorders 2A to 2D and the video camera 3 (video) can be simply processed by monitoring only one confirmation signal transmission line 50 without constantly monitoring a plurality of transmission lines individually connected to each other. It is possible to easily confirm whether or not the adapter and camera adapter have received various control signals and the like.

  On the other hand, as shown in FIG. 9, the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) are set so that the confirmation signal transmission line 50 and the notification signal transmission line 51 are individually formed. In the state, when the recording / reproducing system 1 is connected in series, the confirmation signal transmission lines 50 are individually formed as in the case described above with reference to FIG. The video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) extend in one direction of connection via the second one-way signal transmission terminals of the first and second connectors 10 and 15. And a second other-direction signal transmission line extending in the other direction of connection via the second other-direction signal transmission terminal.

  The central processing unit 27 of the video tape recorder 2A located at the connection start end apparently connects the second other-direction signal transmission line to the second one-way signal transmission line by internal processing. The central processing unit 27 of the video tape recorder 2D located at the connection end also apparently connects the second one-way signal transmission line to the second other-direction signal transmission line by internal processing. Accordingly, the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) also individually form the annular notification signal transmission line 51.

  Actually, the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) transmit a pair of second one-way signals in the first and second connectors, respectively, as in the case described above with reference to FIG. Forming a second one-way signal transmission line formed of a balanced transmission line via a terminal for use and a second other direction signal transmission line formed of a balanced transmission line via a pair of second other-direction signal transmission terminals And a notification signal transmission line 51 which is a balanced transmission line is formed by the second one-way signal transmission line and the second other-direction signal transmission line. However, the pair of second one-way signal transmission terminals transmit the state confirmation signal via the pair of balanced transmission lines as a mechanism for detecting the value of the state confirmation signal without being affected by the common mode noise. In addition, as a mechanism for detecting the value of the state notification signal without being affected by the common mode noise, the state notification signal is provided so as to be transmitted through a pair of balanced transmission lines. Apparently, it can be regarded as one terminal. Similarly, the pair of second direction signal transmission terminals transmits the state confirmation signal via a pair of balanced transmission lines as a mechanism for detecting the value of the state confirmation signal without being affected by the common mode noise. As a mechanism for detecting the value of the status notification signal without being affected by the common mode noise, the status notification signal is transmitted via a pair of balanced transmission lines. Therefore, it can be regarded as one terminal apparently. The notification signal transmission line 51 including a pair of balanced transmission lines is also used as a countermeasure against the common mode noise described above, and cannot transmit different types of signals at the same time. For this reason, in FIG. 9, the notification signal transmission line 51 as well as the confirmation signal transmission line 50 is apparently regarded as one transmission line.

  In this state, the central processing unit 27 of the control source, for example, the video tape recorder 2A to which the controller 25 is connected circulates and transmits the state confirmation signal via the confirmation signal transmission line 50. In addition, the central processing unit 27 circulates and transmits its own state notification signal via the notification signal transmission line 51 in the direction opposite to the state confirmation signal. When the central processing units 27 and 40 of the other video tape recorders 2A to 2D and video camera 3 (video adapter and camera adapter) receive the state confirmation signal transmitted via the confirmation signal transmission line 50, the received state The confirmation signal is transmitted again via the confirmation signal transmission line 50. Further, the central processing unit 27 of the other video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) generates a state notification signal indicating its latest state in response to reception of the state confirmation signal. Is transmitted through the notification signal transmission line 51 in the opposite direction to the state confirmation signal.

  In this way, the central processing units 27 and 40 of the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) are circulated and transmitted to the other video tape recorders 2A to 2D and video by the status notification signal transmitted in a circulating manner. Check the status of the camera 3 (video adapter and camera adapter). In addition, each time the central processing units 27 and 40 of the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) receive the status confirmation signal, the central processing units 27 and 40 compare their own status with the status at that time. When the states are different from each other, a state notification signal indicating the latest state is generated and overwritten on the signal being transmitted. In this way, each central processing unit 27 and 40 always informs the central processing units 27 and 40 of the other video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) of the latest state of itself. Can do.

  Then, the central processing unit 27 of the video tape recorder 2A as the control source transmits various control signals such as playback start and playback stop via the confirmation signal transmission line 50. As a result, the central processing units 27 and 40 of the other video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) receive the various control signals transmitted via the confirmation signal transmission line 50 each time. Then, the control signal addressed to itself is specified based on the device identification information added thereto. Then, the central processing units 27 and 40 of the other video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) copy and capture the control signal addressed to themselves, execute corresponding processing, and The control signal is transmitted again via the confirmation signal transmission line 50. Further, the central processing units 27 and 40 of the other video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) transmit a response signal indicating reception of the control signal or the like via the notification signal transmission line 51. To do.

  As a result, the central processing units 27 and 40 of the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) always indicate the status of the counterpart device by the status notification signal as in the case described above with reference to FIG. By being able to confirm, it is possible to prepare to execute its own processing without delay, or to start processing in conjunction with appropriate processing. For this reason, the central processing unit 27 of the video tape recorder 2A as the control source can always check the states of the other video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) and execute processing in an optimum state. Thus, it is not necessary to control at an appropriate timing, and even if it is a control source, a control signal is simply transmitted to the other video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter). The processing load of control can be greatly reduced.

  When the central processing unit 27 of the video tape recorder 2A as the control source receives a state confirmation signal and various control signals transmitted via the confirmation signal transmission line 50 as in the case described above with reference to FIG. It is possible to collectively confirm that various control signals are transmitted to the other video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter). When the central processing unit 27 receives a status notification signal or a response signal transmitted via the notification signal transmission line 51, the other video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) confirm the status. It is also possible to confirm that signals and various control signals have been properly received. Further, in the recording / reproducing system 1, when the confirmation signal transmission line 50 and the notification signal transmission line 51 are individually formed, when the confirmation signal transmission line 50 and the notification signal transmission line 51 are combined as described above with reference to FIG. In contrast, since various signals are transmitted by being divided into two transmission lines, the signal transmission load on the confirmation signal transmission line 50 can be greatly reduced.

  In the case of this embodiment, in the recording / reproducing system 1, the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) are basically connected in series. For this reason, as shown in FIG. 10, in the recording / reproducing system 1, for example, two video tape recorders 2 </ b> A and 2 </ b> B are sequentially connected in series to the video camera 3, so Audio data can be sequentially transmitted to the first and second video tape recorders 2A and 2B via the device connection interface 4B. As a result, in the recording / reproducing system 1, the video / audio data can be recorded almost simultaneously on the video tape by the two video tape recorders 2A and 2B, and for example, a backup video tape can be easily created.

  As shown in FIG. 11, in the recording / reproducing system 1, a plurality of (for example, three) video tape recorders 2A to 2C are sequentially connected in series to the video camera 3, so that the video camera 3 can be used as a consider or the like. When time shooting is required, video and audio data continuously obtained from the video camera 3 is recorded by the three video tape recorders 2A to 3C in a predetermined time, and as a result, the long time is recorded. Video and audio data obtained by shooting can be continuously left on a video tape. Incidentally, in the case of such a configuration, the recording / reproducing system 1 can also record the video tape recorders 2A to 2C by overlapping the tail portion and the head portion of the video / audio data corresponding to the recording allocation for later editing. . In the recording / reproducing system 1 having such a configuration, while video / audio data is being recorded by any one of the video tape recorders 2A to 2C, a video tape that has already been recorded by the other video tape recorders 2A to 2C is recorded. By exchanging, it is possible to cope with longer shooting, and by using the configuration described above with reference to FIG. 10 as well, a backup video tape can be easily created during shooting.

  Further, as shown in FIG. 12, in the recording / reproducing system 1, a plurality of (for example, three) video tape recorders 2A to 2C are sequentially connected in series to the video camera 3, and a video adapter is connected to the third video tape recorder 2C. 60, the video / audio data obtained from the video camera 3 is recorded almost simultaneously with the first and second video tape recorders 2A and 2B, while the video / audio data is recorded with the second video tape recorder 2B. Is interrupted and reproduced, and this is transmitted to the third video tape recorder 2C. Thereby, in the recording / reproducing system 1, the video / audio data can be sent to the monitor and the speaker via the video adapter 60 while the video / audio data is recorded by the third video tape recorder 2C so that the photographing contents can be confirmed appropriately. Incidentally, in such a configuration, the recording / reproducing system 1 records the audio / video data obtained from the video camera 3 alternately and sequentially on the first and second video tape recorders 2A and 2B. While the video / audio data is being recorded by the recorder 2A, the video / audio data that has already been recorded by the second video tape recorder 2B is played back, and the video adapter 60 is connected while recording this by the third video tape recorder 2C. It is also possible to send the information to a monitor and a speaker via the terminal and confirm the contents of the photographing as appropriate.

  Further, as shown in FIG. 13, in the recording / reproducing system 1, a plurality of (for example, two) video tape recorders 2A and 2B are connected in series, and for example, a video adapter 60 is connected to the second video tape recorder 2B. Thus, the video / audio data already recorded by the first video tape recorder 2A is reproduced and transmitted to the second video tape recorder 2B, and the video is recorded by the second video tape recorder 2C. It is also possible to send the audio data to the monitor and the speaker via the video adapter 60 for viewing while dubbing the audio data. In the recording / reproducing system 1, by increasing the number of video tape recorders 2A and 2B connected in series, a copy of the video / audio data can be easily created by the number of video tape recorders 2A and 2B.

  Further, as shown in FIG. 14, in the recording / reproducing system 1, a network interface 61 is connected to the video tape recorder 2A via the device connection interface 4E, and a server 63 is connected to the network interface 61 via the network 62. In the recording / reproducing system 1, when a request for obtaining video / audio data is given from the server 63 to the network interface 61 via the network 62, the network interface 61 takes in the video / audio data reproduced by the video tape recorder 2A. The data is returned to the server 63 via the network 62. In this case, the server 63 on the network 62 normally requests video and audio data divided into a plurality of parts, and repeats the request and acquisition of the divided parts in turn alternately. Therefore, the video tape recorder 2A continuously reproduces the video / audio data from the video tape, but temporarily stores the reproduced video / audio data in the buffer memory 32 used at the time of recording, and receives an acquisition request from the server 63. Each time video / audio data output is requested from the network interface 61, the requested video / audio data is read from the buffer memory 32 and sent to the network interface 61. Thereby, in the recording / reproducing system 1, when the video / audio data is requested from the server 63, the video / tape recorder 2A sequentially repeats the start / stop of the reproduction of the video / audio data to divide the video / audio data. Even without reproduction, the video / audio data can be provided to the server 63 without delay, and thus the processing load of the video tape recorder 2A can be greatly reduced.

  Further, as shown in FIG. 15, in the recording / reproducing system 1, a plurality of video cameras 3A,..., 3N are respectively connected via video tape recorders 2A,. To the input side of the data integration interface 64. In the recording / reproducing system 1, the video tape recorder 2X is connected to the output side of the data integration interface 64 via the device connection interface 4X. In the recording / reproducing system 1 having such a configuration, since a plurality of transmission lines for video / audio data are prepared, video tape recorders 2A,... Corresponding respectively to video / audio data obtained from a plurality of video cameras 3A,. In addition to recording to 2N while recording at 2N, the data integration interface 64 distributes the plurality of video / audio data to a plurality of transmission lines and transmits them to the video tape recorder 2X for recording. As a result, in the recording / reproducing system 1, video and audio data obtained by a plurality of video cameras 3A,..., 3N are individually recorded by a plurality of video tape recorders 2A,. The recorder 2X can also easily record all at once.

  Further, as shown in FIG. 16, in the recording / reproducing system 1, the input side of the format converter 65 is connected to the video camera 3 via the video tape recorder 2A and the device connection interface 4B. In the recording / reproducing system 1, another video tape recorder 2X is connected to the output side of the format converter 65 via the device connection interface 4X. In the recording / reproducing system 1, the audio / video data obtained from the video camera 3 is sent to the format converter 65 while being recorded by the video tape recorder 2A, and the format converter 65, for example, linear gradation of the video based on the audio / video data. Alternatively, the logarithmic gradation is converted into a different logarithmic gradation or linear gradation and recorded by another video tape recorder 2X. Thus, in such a recording / reproducing system 1, the video / audio data obtained by the video camera 3 can be recorded as it is by one video tape recorder 2 while the format is converted by the other video tape recorder 2X. 3 can record video and audio data of different formats almost simultaneously while photographing the subject.

  In the above configuration, in the recording / reproducing system 1, the video tape recorders 2 </ b> A to 2 </ b> D and the video camera 3 are sequentially connected to the apparatus in a state where the confirmation signal transmission line 50 is configured to be used also as the notification signal transmission line 51. When the system is constructed by connecting in series via the interfaces 4A to 4D, the first one-way signal transmission terminals and the first ones provided in the first and second connectors 10 and 15 of the device connection interfaces 4A to 4D An annular confirmation signal transmission line 50 is formed via one other direction signal transmission terminal. In the recording / reproducing system 1, any one of the video tape recorders 2A to 2D to which the controller 25 is connected becomes a control source of the entire system. As a result, the control-source video tape recorders 2A to 2D receive the confirmation signal transmission line 50 that receives a state confirmation signal for confirming the states of the other video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter). Through the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter). Further, the control video tape recorders 2A to 2D also receive the status notification signal for notifying the other video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) of their own status. Through the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter).

  On the other hand, when the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) other than the control source and the control source receive the state confirmation signal transmitted via the confirmation signal transmission line 50, In response, all video tape recorders 2A through 2A through the confirmation signal transmission line 50 send status notification signals for notifying the other video tape recorders 2A through 2D and video cameras 3 (video adapters and camera adapters). 2D and video camera 3 (video adapter and camera adapter) are circulated and transmitted. The video tape recorders 2A to 2D and video cameras 3 (video adapters and camera adapters) other than the control source and the control source are connected to video tape recorders 2A to 2D and video cameras 3 (video adapters and camera adapters) other than the video tape recorders 2A to 2D. Captures the transmitted status notification signal. In this way, in the recording / reproducing system 1, every time the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) receive the status confirmation signal transmitted in a circulating manner, their own statuses are appropriately determined. The content of the notification signal is updated and transmitted. Therefore, in the recording / reproducing system 1, all the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) can always be confirmed including changes in each other.

  In the recording / reproducing system 1, the video tape recorders 2A to 2D and the video camera 3 are sequentially connected to the device connection interfaces 4A to 4D in a state where the confirmation signal transmission line 50 and the notification signal transmission line 51 are set to be formed separately. The first one-way signal transmission terminal and the first other direction provided in the first and second connectors 10 and 15 of the device connection interfaces 4A to 4D when the system is constructed through serial connection An annular confirmation signal transmission line 50 is formed via a signal transmission terminal. The video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) are provided with second one-way signal transmission terminals provided on the first and second connectors 10 and 15 of the device connection interfaces 4A to 4D. The notification signal transmission line 51 is formed via the second other-direction signal transmission terminal. Then, the video tape recorders 2A to 2D that are the control sources circulate and transmit the state confirmation signal to all the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) via the confirmation signal transmission line 50. . The video tape recorders 2A to 2D as the control source circulate their own state notification signals through all the video tape recorders 2A to 2D and the video cameras 3 (video adapters and camera adapters) via the notification signal transmission line 51. Let it transmit.

  On the other hand, when the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) other than the control source and the control source receive the state confirmation signal transmitted via the confirmation signal transmission line 50, Accordingly, the state notification signal of its own is circulated and transmitted by all the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) via the notification signal transmission line 51. The video tape recorders 2A to 2D and video cameras 3 (video adapters and camera adapters) other than the control source and the control source are connected to video tape recorders 2A to 2D and video cameras 3 (video adapters and camera adapters) other than the video tape recorders 2A to 2D. The state notification signal transmitted via the notification signal transmission line 51 is captured. In this way, in the recording / reproducing system 1, all the video tape recorders 2 </ b> A to 2 </ b> D and the video camera 3 (video adapter and camera adapter) receive the state confirmation signal that is circulated and transmitted via the confirmation signal transmission line 50. Each time, the content of its own state notification signal is updated as appropriate and transmitted again via the notification signal transmission line 51. Therefore, in this case, the recording / reproducing system 1 can always check all the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter), including changes, with respect to each other.

  Therefore, in such a recording / reproducing system 1, the control source video tape recorders 2A to 2D control signals at appropriate timing while constantly checking the states of the other video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter). The video tape recorders 2A to 2D to be controlled and the video camera 3 (video adapter and camera adapter) on the other side of the video tape recorders 2A to 2D are simply transmitted by simply transmitting a control signal. While confirming the states of the 2D and the video camera 3 (video adapter and camera adapter), processing corresponding to the control signal can be executed in accordance with the confirmed state.

  According to the above configuration, in the recording / reproducing system 1, when the video tape recorders 2A to 2D and the video camera 3 are sequentially connected in series via the device connection interfaces 4A to 4D, the device connection interfaces 4A to 4D are connected. An annular transmission line for transmitting the state confirmation signal and the state notification signal is formed via the video tape recorders 2A to 2D and the video while the state confirmation signal is circulated and transmitted through the formed transmission line. A state notification signal for notifying the state of each camera 3 is also circulated and transmitted. Accordingly, in the recording / reproducing system 1, although the video tape recorders 2A to 2D and the video camera 3 other than the control source receive control signals from the video tape recorders 2A to 2D of the control source, Processing according to the control signal can be executed in accordance with the confirmed state. As a result, in the recording / reproducing system 1, even when a plurality of video tape recorders 2A to 2D and a video camera 3 are used for system construction, the video tape recorders 2A to 2D are always different from the control source video tape recorders 2A to 2D. It is possible to avoid a significant increase in the processing load during control by checking the state of the 2D and the video camera 3 and transmitting a control signal at an appropriate timing, and thus a plurality of video tape recorders 2A. Even when the 2D and video camera 3 are used, it is possible to realize a recording / reproducing system that can be easily constructed.

  In the recording / reproducing system 1, when the confirmation signal transmission line 50 is also used as the notification signal transmission line 51, the state confirmation signal and various control signals are circulated and transmitted through the confirmation signal transmission line 50. The video tape recorders 2A to 2D perform simple processing for monitoring only the signals transmitted via one confirmation signal transmission line 50, and the status confirmation signals and the like to the other video tape recorders 2A to 2D and the video camera 3 are monitored. Whether or not various control signals are properly transmitted can be easily confirmed collectively. Further, in the recording / reproducing system 1, since the status notification signal and the response signal are circulated and transmitted through the confirmation signal transmission line 50, the video tape recorders 2 </ b> A to 2 </ b> D that are the control sources transmit the single confirmation signal transmission line 50. Whether or not the status confirmation signal and various control signals are properly received by the other video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) with a simple process of monitoring only the transmitted signal. It can also be easily confirmed.

  On the other hand, in the recording / reproducing system 1, even when the confirmation signal transmission line 50 and the notification signal transmission line 51 are individually formed, the state confirmation signal and various control signals are circulated and transmitted through the confirmation signal transmission line 50. The video tape recorders 2A to 2D that are the control sources can perform simple processing for monitoring only the signal transmitted through one confirmation signal transmission line 50, and the other video tape recorders 2A to 2D and the video camera 3 can be Whether or not the state confirmation signal and various control signals are properly transmitted can be easily confirmed collectively. Further, in the recording / reproducing system 1, since the state notification signal and the response signal are circulated and transmitted through the notification signal transmission line 51, the video tape recorders 2 </ b> A to 2 </ b> D as the control source transmit the single notification signal transmission line 51. Whether or not the status confirmation signal and various control signals are properly received by the other video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) with a simple process of monitoring only the transmitted signal. It can also be easily confirmed.

  In addition, in the recording / reproducing system 1, the confirmation signal transmission line 50 and the notification signal transmission line 51 transmit the state confirmation signal, various control signals, the state notification signal, and the response signal in opposite directions. Therefore, in the recording / reproducing system 1, when the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) other than the control source receive the state confirmation signal and various control signals, the state confirmation signal and various control signals are received. In addition, the status notification signal and the response signal can be quickly transmitted to the video tape recorders 2A to 2D as the control source. Therefore, in the recording / reproducing system 1, as compared with the case where the confirmation signal transmission line 50 and the notification signal transmission line 51 are combined, the control source video tape recorders 2A to 2D transmit the state confirmation signals and various control signals. Then, it is possible to confirm whether or not these state confirmation signals and various control signals are properly received at a faster time.

  Further, in the recording / reproducing system 1, when the confirmation signal transmission line 50 and the notification signal transmission line 51 are individually formed, various signals are transmitted as compared with the case where the confirmation signal transmission line 50 and the notification signal transmission line 51 are combined. Since the transmission is divided into two transmission lines, it is possible to prevent an unnecessary transmission delay from occurring due to an increase in signals to be transmitted to one transmission line.

  In the recording / reproducing system 1, the first and second one-way signal transmission terminals for transmitting various control signals to the first and second connectors 10 and 15 of the device connection interfaces 4A to 4D, the first and second The second other direction signal transmission terminal, the first direction data transmission terminal and the second direction data transmission terminal for transmitting the video / audio data are aggregated, and the transmission lines of these various control signals and video / audio data are integrated. Aligned the length. Therefore, in the recording / reproducing system 1, various control signals and video / audio data can be easily synchronized and transmitted, and delays generated in these various control signals and video / audio data can be easily set.

  Further, in the recording / reproducing system 1, since the apparatus connection interfaces 4A to 4D are used to connect the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter), the control signal system and Compared to the case where the connector cables are separated in the video / audio data system, the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) are easily connected to greatly simplify the system construction. can do.

  Further, in the recording / reproducing system 1, since the status confirmation signal, status notification signal, various control signals, and response signal are circulated and transmitted, any video tape recorder 2A to 2D can be easily used as a control source simply by connecting the controller 25. It can be made to function and system construction can be further simplified.

  In the above-described embodiment, when the recording / reproducing system 1 is constructed, the confirmation signal transmission line 50 is formed so as to be used also as the notification signal transmission line 51 according to the prior setting, or the confirmation signal transmission line 50 and Although the case where the notification signal transmission line 51 is formed individually has been described, the present invention is not limited to this, and the confirmation signal transmission line 50 is also used as the notification signal transmission line 51 when the recording / reproducing system 1 is constructed. Alternatively, the confirmation signal transmission line 50 and the notification signal transmission line 51 may be formed individually only. In the recording / reproducing system 1, when the confirmation signal transmission line 50 is formed only to be used as the notification signal transmission line 51, the first and second connectors 10 and 15 are respectively connected to the pair of second one-way signals. It can be formed without the transmission terminal and the pair of second other direction signal transmission terminals, and thus the configuration of the first and second connectors 10 and 15 can be simplified.

  In the above-described embodiment, the state confirmation signal transmission line and various control signal transmission lines are also used, and the state notification signal transmission line and the response signal transmission line are also used. The present invention is not limited to this, and a transmission line for a status confirmation signal and a transmission line for various control signals may be prepared separately, and a transmission line for a status notification signal and a transmission line for a response signal may be prepared separately.

  Furthermore, in the above-described embodiment, the case where the recording / reproducing system 1 records / reproduces the video / audio data obtained from the video camera 3 has been described. Other various data such as content data such as program data and text data may be recorded and reproduced.

  Further, in the above-described embodiment, the apparatus control system according to the present invention is the apparatus in which the video tape recorders 2A to 2D and the video camera 3 (video adapter and camera adapter) as the control target apparatuses described above with reference to FIGS. Although the case where the present invention is applied to the recording / reproducing system 1 constructed by connecting in series via the connection interfaces 4A to 4D has been described, the present invention is not limited to this, but a video tape recorder, a hard disk recorder, a DVD (Digital versatile) Disc) recorder and other recording / playback devices, CD (Compact Disc) players, DVD players and other playback devices, game machines, television receivers, personal computers, printers, etc. Are connected in series via the device connection interface. The present invention can be widely applied to other various device control systems such as the device control system.

  The present invention can be used in an apparatus control system constructed by connecting a plurality of control target apparatuses such as a video tape recorder and a DVD recorder in series.

1 is a schematic perspective view showing an embodiment of the overall configuration of a recording / reproducing system according to the present invention. It is a rough-line perspective view which shows the structure of a 1st connector. It is a basic diagram with which it uses for description of arrangement | positioning of the terminal of a 1st connector. It is a basic diagram with which it uses for description of arrangement | positioning of the terminal of a 2nd connector. It is a basic diagram with which it uses for description of the ground terminal in a 1st connector. It is a block diagram which shows the circuit structure of a video tape recorder. It is a block diagram which shows the circuit structure of a video camera. It is a basic diagram with which it uses for description of transmission of the state confirmation signal and state notification signal at the time of using both a confirmation signal transmission line and a notification signal transmission line. It is a basic diagram with which it uses for description of transmission of the state confirmation signal and state notification signal at the time of forming a confirmation signal transmission line and a notification signal transmission line separately. It is an approximate line figure used for explanation of backup of video / audio data. It is a basic diagram with which it uses for description of the long-time recording with respect to video / audio data. It is a basic diagram with which it uses for description of the confirmation during the recording of video / audio data. It is a basic diagram with which it uses for description of dubbing of audiovisual data. It is a basic diagram with which it uses for description of provision to the network of video / audio data. It is a basic diagram with which it uses for description of the integrated recording of video / audio data. It is an approximate line figure used for explanation of format conversion recording of video / audio data.

Explanation of symbols

1 ... Recording / playback system, 2A, 2B, 2C, 2D ... Video tape recorder, 3 ... Video camera, 4A, 4B, 4C, 4D ... Device connection interface, 10 ... First connector, 13A to 13G …… First terminal, 14A to 14Q …… Second terminal, 15 …… Second connector, 18A to 18G …… Third terminal, 19A to 19Q …… Fourth terminal, 27, 40 …… Central processing unit 50... Confirmation signal transmission line 51. Notification signal transmission line 55. First direction data transmission line 56. Second direction data transmission line 60.

Claims (5)

A signal transmission terminal assigned for transmission of a state confirmation signal for requesting confirmation of the state and a state notification signal for notifying its own state in response to reception of the state confirmation signal; the state confirmation signal; and There are provided two connectors each having a signal receiving terminal assigned to receive the state notification signal, a state detecting unit for continuously detecting its own state, and a control unit, through the two connectors. a plurality of control target equipment to be connected in series
With
The control target device to which another different control target device is connected through the two connectors among the plurality of control target devices ,
When the control unit receives the state confirmation signal transmitted from the other one of the control target devices via the signal reception terminal of one of the connectors, the received state confirmation signal is transmitted to the other connector. Transmitting to the other control target device via the signal transmission terminal, and receiving the status confirmation signal transmitted from the other control target device via the signal reception terminal of the other connector Then, the received state confirmation signal is transmitted to the other control target device via the signal transmission terminal of one of the connectors, and the self and the other control target device transmitted from the other When a plurality of state notification signals for notifying the states of the other control target devices are received via the signal receiving terminal of one of the connectors, the received state The notification signal is transmitted to the other control target device via the signal transmission terminal of the other connector, and the self and other control target devices transmitted from the other control target device are transmitted. When the plurality of status notification signals for notifying the status are received via the signal receiving terminal of the other connector, the received status notification signal is transmitted to the other one via the signal transmission terminal of one of the connectors. Each time the state confirmation signal is received, the self state previously notified by the state notification signal is updated to the latest self detected by the state detection unit. When the previous self state is different from the latest self state, the state notification signal for notifying the previous self state is notified, and the latest self state is notified. Change to that the state notification signal,
Among the plurality of control target devices, only one of the other control target devices is connected via one connector and connected to one end and the other end of the series connection.
When the control unit receives the state confirmation signal transmitted from one other device to be controlled through the signal receiving terminal of one connector, the received state confirmation signal is transmitted to one connector. A plurality of the above-described ones that are transmitted to another one of the control target devices via the signal transmission terminal and that respectively notify the states of the self and the other control target devices transmitted from the other one of the control target devices When the status notification signal is received via the signal receiving terminal of one of the connectors, the received status notification signal is transmitted to another one of the control target devices via the signal transmission terminal of one of the connectors. Thus, every time the status confirmation signal is received, the self status previously notified by the status notification signal is updated with the latest update detected by the status detection unit. When the previous self-state is different from the latest self-state, the state-notification signal for notifying the previous self-state is notified of the latest self-state. Change to the above status notification signal
Instrumentation置制your system. The two connectors provided in each of the plurality of control target devices are as follows:
One signal transmission terminal that is also used for transmission of the state confirmation signal and the state notification signal, and one signal reception terminal that is also used for reception of the state confirmation signal and the state notification signal,
The control target device to which another different control target device is connected through the two connectors among the plurality of control target devices ,
The control unit receives the state confirmation signal transmitted from the other one of the control target devices via the signal reception terminal of one of the connectors, and the received state confirmation signal is transmitted to the other connector. A plurality of signals to be transmitted to the other control target device via the signal transmission terminal, and to notify the states of the self and other control target devices transmitted from the other control target device. The status notification signal is received via the signal receiving terminal of one of the connectors, and the received status notification signal is transmitted to the other control target device via the signal transmission terminal of the other connector. The state confirmation signal transmitted from the other device to be controlled is received via the signal reception terminal of the other connector, and the received state confirmation signal is received. Is transmitted to the other control target device via the signal transmission terminal of one of the connectors, and the state of the self and the other control target device transmitted from the other control target device is transmitted. A plurality of status notification signals to be notified respectively are received via the signal receiving terminal of the other connector, and the received status notification signal is transmitted to the other one via the signal transmission terminal of one of the connectors. Sent to the device to be controlled,
Among the plurality of control target devices, only one of the other control target devices is connected via one connector and connected to one end and the other end of the series connection.
The control unit receives the state confirmation signal transmitted from one other device to be controlled through the signal receiving terminal of one connector, and receives the received state confirmation signal to one connector. A plurality of signals to be transmitted to another one of the control target devices via the signal transmission terminal, and to notify the states of the self and the other control target devices transmitted from the one other control target device. The status notification signal is received via the signal receiving terminal of one of the connectors, and the received status notification signal is transmitted to another one of the control target devices via the signal transmission terminal of one of the connectors. Send
Device control system according to 請 Motomeko 1. The two connectors provided in each of the plurality of control target devices are as follows:
The signal transmission terminal has a confirmation signal transmission terminal assigned for transmission of the state confirmation signal and a notification signal transmission terminal assigned for transmission of the state notification signal, and has the state confirmation signal as the signal reception terminal. A confirmation signal receiving terminal assigned to receive, and a notification signal receiving terminal assigned to receive the state notification signal,
The control target device to which another different control target device is connected through the two connectors among the plurality of control target devices ,
When the control unit receives the state confirmation signal transmitted from the other control target device via the confirmation signal receiving terminal of one of the connectors, the received state confirmation signal is transmitted to the other connector. To the other control target device via the confirmation signal transmission terminal, and to transmit the status confirmation signal transmitted from the other control target device to the confirmation signal reception terminal of the other connector. When received via the confirmation signal transmission terminal of one of the connectors, the received state confirmation signal is transmitted to the other control target device and transmitted from the other one of the control target devices. When receiving a plurality of the state notification signals for notifying the states of the device itself and the other control target devices via the notification signal receiving terminal of one of the connectors. The received status notification signal is transmitted to the other control target device via the notification signal transmission terminal of the other connector, and the self and other transmitted from the other control target device. When the plurality of state notification signals for notifying the state of the control target device are received via the notification signal receiving terminal of the other connector, the received state notification signal is received by the one connector. Send to the other control target device via the transmission terminal,
Among the plurality of control target devices, only one of the other control target devices is connected via one connector and connected to one end and the other end of the series connection.
When the control unit receives the state confirmation signal transmitted from one other device to be controlled through the confirmation signal reception terminal of one connector, the received state confirmation signal is transmitted to one connector. A plurality of signals that are transmitted to another one of the control target devices via the confirmation signal transmission terminal, and that respectively notify the states of the self and the other control target devices transmitted from the other control target device. When the status notification signal is received via the notification signal reception terminal of one of the connectors, the received status notification signal is transmitted to the other one of the control objects via the notification signal transmission terminal of one of the connectors. Send to device
Device control system according to 請 Motomeko 1. The control target device to which another different control target device is connected through the two connectors among the plurality of control target devices ,
The control unit receives the state confirmation signal transmitted from the other one of the devices to be controlled via the confirmation signal reception terminal of one of the connectors, and receives the received state confirmation signal of the other It transmits to the other control target device via the confirmation signal transmission terminal of the connector, and notifies the status of the self and other control target devices transmitted from the other control target device. A plurality of the status notification signals are received via the notification signal receiving terminal of the other connector, and the received status notification signals are received via the notification signal transmission terminal of one of the connectors. The state confirmation signal transmitted to the control target device and transmitted from the other control target device is received via the confirmation signal receiving terminal of the other connector, and the reception is performed. The state confirmation signal is transmitted to the other control target device via the confirmation signal transmission terminal of one of the connectors, and the self and other ones transmitted from the other control target device are transmitted. A plurality of the status notification signals that respectively notify the status of the control target device are received via the notification signal receiving terminal of one of the connectors, and the received status notification signal is transmitted to the other connector of the notification signal. To the other device to be controlled via the terminal,
Among the plurality of control target devices, only one of the other control target devices is connected via one connector and connected to one end and the other end of the series connection.
The control unit receives the state confirmation signal transmitted from one other device to be controlled via the confirmation signal reception terminal of one connector, and receives the received state confirmation signal for one of the above-described state confirmation signals. The information is transmitted to another one of the control target devices via the confirmation signal transmission terminal of the connector, and the states of the self and the other control target devices transmitted from the other one of the control target devices are respectively notified. A plurality of the status notification signals are received via the notification signal receiving terminal of one of the connectors, and the received status notification signal is received via the notification signal transmission terminal of one of the connectors. Send to controlled device
Device control system according to 請 Motomeko 3. The two connectors provided in each of the plurality of control target devices are as follows:
It has a data transmission terminal assigned to the transmission of content data, and a data reception terminal which is assigned to the reception of the content data
Device control system according to 請 Motomeko 1.

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