JP2000092352A - Video signal transmitter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a video signal transmitter that selects signal processing for a video signal automatically in response to a format of a CCD unit of a video camera. SOLUTION: The video signal transmitter is provided with a CCD unit 2 that picks up image of an object, an optical fiber 5 that transmits a video signal of picked up image, and a CPU 6 that applies signal processing to the transmitted video signal. Since the video signal processed by the video signal transmitter includes valid line number information to identify the number of valid vertical lines of a video signal of picked up image, even when the format of the video signal of picked up image by a replaced CCD unit of 1035 lines/1080 lines is changed, because the signal is automatically processed at post-stages depending on the valid line number information, adjustment and setting changes attended with the format change are not required, the circuit is designed in common and the cost reduction is realized by unification of models.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video signal transmitting apparatus for transmitting a video signal picked up by a video camera, for example, to a subsequent signal processing system.

[0002]

2. Description of the Related Art At the same time as digitalization of broadcasting, high image quality has been demanded, and further, maintainability has been demanded.

[0003] In response to such demands, the video camera C
Video cameras have been developed in which a CD (Charge Coupled Device) unit can be replaced according to the purpose, format, specifications, and the like.

[0004]

However, in a conventional video camera, when the CCD unit of the video camera is replaced, the CCU is connected to the video camera and performs signal processing of a video signal captured by the video camera. (Camera control unit) has to be replaced, and the work involved in replacing the CCD unit is complicated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a video signal transmission apparatus capable of automatically switching a signal processing of a video signal according to a format of a CCD unit of a video camera. I do.

[0006]

According to the present invention, there is provided a video signal transmitting apparatus, comprising: an image capturing means for capturing an image of a subject; a transmitting means for transmitting a video signal captured by the image capturing means; and the image signal transmitted by the transmitting means. A video signal transmission device comprising: a signal processing unit configured to process a video signal; wherein the video signal includes identification information for identifying the number of effective vertical lines of the video signal captured by the imaging unit. It is.

According to the video signal transmission apparatus of the present invention, the following operations are performed. The signal flow of the main line system is as follows. The video signal transmission device operates so that the following main line signal processing is automatically performed according to the number of effective lines of the imaging means.

[0008] Information on the number of valid lines is detected and taken in by the imaging means and managed as valid line number information. This effective line number information is transmitted to the signal processing means via the transmission means.

[0009] The video signal output from the image pickup means automatically switches its internal signal processing in accordance with the effective line number information, and performs appropriate signal processing. In the internal signal processing, a video signal supplied from the imaging unit is subjected to processing specific to the imaging unit, a separately processed audio signal is multiplexed with the video signal, control data is multiplexed with the video signal, and a coaxial output is obtained. And a process for obtaining a transmission output.

The signal processed in this way is output to the outside as an output signal, and the signal processed signal is transmitted to the signal processing means via the transmission means together with the effective line number information.

The video signal and effective line number information transmitted to the signal processing means are subjected to appropriate signal processing. In the signal processing means, a process of converting an input supplied from the imaging means into a multiplexed signal of a video signal, control data, and an audio signal is performed, control data is extracted from the multiplexed signal, and an audio signal is extracted from the multiplexed signal as an audio signal. The output signal is mixed with a signal necessary for the video signal, the imaging unit and the signal processing unit are synchronized, a phase management process of the video signal is performed, and a process for obtaining an output signal is performed.

The signal processed by the signal processing means is output to the outside as an output signal. Similarly, the signal processed is converted to another signal standard.
This makes it possible to automatically or arbitrarily select a signal processing method at the subsequent stage based on the number of effective lines of the imaging means in the main line system.

Next, the flow of the signal of the return system will be described below. The information on the number of valid lines is detected by the image pickup means, taken in, and managed as valid line number information.
This effective line number information is transmitted to the signal processing means via the transmission means.

The effective line number information transmitted to the signal processing means is used for signal processing. The return signal input to the signal processing means is converted into a desired signal in a predetermined case. The number of conversion lines at that time is determined by the effective line number information described above, and appropriate signal processing is performed.

The signal processing means processes the input of a return signal input from the outside, and the desired return video signal is selectively input and supplied to the imaging means as a return video signal, and the audio signal is returned. The control data is multiplexed with the video signal, the control data is multiplexed with the return video signal, and the multiplexed return video signal is supplied as an output to the imaging unit.

The signal subjected to the appropriate signal processing in this way is transmitted to the image pickup means by the transmission means, and the video signal is subjected to appropriate signal processing according to the information on the number of effective lines, and the signal is output. Is done.

In the imaging means, the input supplied from the signal processing means is converted into a multiplexed signal of a return video signal, a control signal and an audio signal, control data is extracted from the multiplexed signal, and an audio signal is extracted from the multiplexed signal and output. .

[0018]

The present embodiment will be described below.
First, the configuration of a camera-CCU (camera control unit) system using the video signal transmission device of the present embodiment will be described with reference to FIG.

In FIG. 3, the camera-CCU system includes a camera 30 (or 31) for picking up video and audio signals by the HDTV (High Definition Television) system, a CCU 32 for controlling the camera, and a camera 3
Optical fiber 34 connecting 0, 31 and CCU 32,
35, an MSU (master setup unit) 33 for centrally controlling the cameras 30, 31 and the CCU 32 remotely, and a cable 36 for connecting the CCU 32 and the MSU 33. The cameras 30, 31 are HD-S
A video signal (Y / P _B , P _R ) composed of a luminance signal and a color difference signal captured in a DI (Serial Digital Interface) format is output. Here, the cameras 30 and (31) have the number of effective lines of 1035 /
The 1080 CCD unit is configured so that one of the two types can be built-in selectively in a detachable manner by inserting and removing a plug in a plug-in system. The cable uses a composite optical fiber cable in which two optical fibers for transmission and reception are combined with a metal cable for a control line and a power supply line.

The camera-CCU system thus configured operates as follows. For example, camera 3
0, (or 31) is located in the studio and C
When the CU 32 and the MSU 33 are arranged in the sub-adjustment room, the cameras 30, 31 and CC are connected by the optical fibers 34, 35 arranged between the studio and the sub-adjustment room.
Connect to U32. The camera 30 in the studio from the CCU 32 in the sub-control room via the optical fiber 34, (35),
Various control signals are supplied to (31). Thus, when a program is recorded by the cameras 30 and (31) in the studio, the video signal and the audio signal are converted to the optical fiber 34,
Via (35), it is supplied to the CCU 32 in the sub-adjustment chamber. The CCU 32 outputs the video signal and the audio signal, and performs signal processing such that the video signal and the audio signal can be edited or transmitted by an editing device, a switcher, or the like at a later stage. In this case, the CCU 32 returns the return video signal and the audio signal to the cameras 30 and 31 as signals confirming that the video signal and the audio signal have been received. The cameras 30 and 31 receive the return video signal and the audio signal and monitor them with a viewfinder or the like, so that the output video signal and the audio signal can be known to be supplied to the CCU 32.

Here, the signal processing in the CCU 32 performs the following switching operation. Specifically, the camera 30,
(31) The video signal and the audio signal are supplied to the CCU 32 for the main line signal processing. First, the signal processing is performed in accordance with the number of effective lines of the CCD. Three processing modes can be selected: a case where fixed signal processing is performed and a third case where fixed signal processing is performed with 1080 effective scanning lines.

The return signal processing in which the video signal and the audio signal are supplied from the CCU 32 to the cameras 30 and (31) is firstly performed in accordance with the number of effective lines of the CCD. Effective scanning line number 1035
Three processing modes can be selected: a case where fixed signal processing is performed with lines and a third case where signal processing is fixed with 1080 effective scanning lines.

The operation of the video signal transmitting apparatus according to the present embodiment in the camera-CCU system configured as described above will be described. First, the basic operation of the camera-CCU system will be described. In FIG. 3, a system information signal and an intercom signal are supplied from the CCU 32 to the cameras 30 and 31 via the optical fibers 34 and 35. The system information signal is information relating to the control of the photographing operation of the cameras 30 and (31) and the video signal processing, for example,
Information such as lens aperture, color filter selection, cable length compensation, contour correction, and gamma correction for each channel. The intercom signal is a communication signal between the studio and the staff in the sub control room. In this case, on the CCU 32 side, the signal processing circuit digitally converts the system information signal and the intercom signal, and performs multiplexing processing by time division. The multiplexed signal is supplied to a transmission circuit. A transmitting circuit (not shown) outputs a multiplexed signal. The output signal is supplied to an electro-optical conversion circuit (not shown). The electro-optical conversion circuit converts the output signal to an optical signal. The electro-optical conversion circuit uses a semiconductor laser, for example, a laser diode. An optical signal emitted from the electro-optical conversion circuit is transmitted through an optical fiber.

The optical signal transmitted at the speed of light is
It is supplied to an unillustrated photoelectric conversion circuit on the (31) side.
The photoelectric conversion circuit receives the optical signal and converts it into an electrical signal. The photoelectric conversion circuit is, for example, a photodiode. The converted electric signal is supplied to a receiving circuit (not shown). The receiving circuit demodulates the electric signal. The demodulated electric signal is supplied to a signal processing circuit. The signal processing circuit divides the electric signal. As a result, the system information signal and the intercom signal are obtained on the studio cameras 30, 31 side. The system information signal is supplied to the CPU control units of the cameras 30 and (31). The CPU control unit controls by supplying control signals corresponding to system information signals to various driving units.
The intercom signal outputs sound from headphones or speakers via an intercom processing circuit.

On the cameras 30, 31 side, a video signal and an audio signal are output from a CCD unit and headphones (not shown) based on a control signal, and supplied to a signal processing circuit. Here, the following main line signal processing is automatically performed in accordance with the number of effective lines of the CCD unit mounted on the cameras 30 and (31). Various setting information set based on the control signal is output from the CPU control unit as a system information signal and supplied to a signal processing circuit. From the intercom processing circuit, an intercom signal set based on an input operation using a microphone or the like in the studio is output and supplied to the signal processing circuit. The signal processing circuit performs processing such as luminance signal processing, color signal processing, white balance adjustment, and gamma correction on the video signal. The signal processing circuit includes a video signal and an audio signal that have been subjected to the signal processing in this manner, a system information signal,
The intercom signal is multiplexed by time division. The multiplexed signal is supplied to a transmission circuit (not shown). The transmitting circuit outputs a multiplexed signal. The output signal is supplied to an electro-optical conversion circuit (not shown). The electro-optical conversion circuit converts the output signal to an optical signal. The electro-optical conversion circuit uses a semiconductor laser, for example, a laser diode. An optical signal of the main line emitted from the electro-optical conversion circuit is transmitted through the optical fibers 34 and (35).

The optical signal of the main line transmitted at the speed of light is CCU
Is supplied to a photo-electric conversion circuit (not shown) on the side. The photoelectric conversion circuit receives the optical signal and converts it into an electrical signal. The photoelectric conversion circuit is, for example, a photodiode. The converted electric signal is supplied to a receiving circuit (not shown). The receiving circuit demodulates the electric signal. The demodulated electric signal is supplied to a signal processing circuit. The signal processing circuit divides the electric signal. As a result, the camera 3 in the studio
Video and audio signals, system information signals and intercom signals from the 0 and (31) sides are obtained. CCU3
2 outputs the video signal and the audio signal,
Signal processing is performed so that the video signal and the audio signal can be edited and transmitted in a later-stage editing device or switcher. In this case, the CCU 32 returns a video signal and an audio signal of a return system for confirming that the video signal and the audio signal have been received to the cameras 30 and 31 as signals input from the outside. Here, the camera 30,
The signal processing of the return system is automatically performed according to the number of effective lines of the CCD unit mounted in (31).
At this time, the CCU supplies the next system information signal and intercom signal to the cameras 30 and (31).

In this case, as in the operation described above, the signal processing circuit multiplexes the return video signal and the audio signal with the next system information signal and the intercom signal. The multiplexed signal is supplied to a transmission circuit. The transmitting circuit outputs a multiplexed signal. The output signal is supplied to the electro-optical conversion circuit. The electro-optical conversion circuit converts the output signal to an optical signal. An optical signal emitted from the electro-optical conversion circuit is transmitted through the optical fibers 34 and (35).

The optical signal transmitted at the speed of light is
It is supplied to the photoelectric conversion circuit on the (31) side. The photoelectric conversion circuit receives the optical signal and converts it into an electrical signal. The converted electric signal is supplied to a receiving circuit. The receiving circuit outputs this electric signal. The output electric signal is supplied to a signal processing circuit. The signal processing circuit divides the electric signal. This allows the studio cameras 30, (31)
The system information signal and the intercom signal are obtained on the side. The cameras 30 and (31) receive the return video signal and the audio signal, so that the output video signal and the audio signal are supplied to the CCU 32. Also, the return video signal and the audio signal can be used for monitoring in a studio.

The system information signal also includes a prompter signal and a tally signal. The prompter signal is
In the same operation as described above, the camera 30 from the CCU 32 side,
(31) side. The prompter is a device that projects characters on a dedicated half mirror provided on the front surface of the lenses of the cameras 30 and 31 in the studio. The prompter signal is the character information supplied from the CCU 32 to the half mirror on the camera 30, (31) side. The tally signal is supplied from the camera 30, (31) to the CCU 32 by the same operation as described above. Tally is camera 30,
(31) For example, a lamp provided at an upper portion such as a front end or a rear end, and shows a state in which an image of a camera whose lamp is turned on is transmitted on air in a studio. The lighting control of the tally lamp is performed by supplying the system information signal for lighting control of the tally lamp from the CCU 32 to the cameras 30 and 31 in the same operation as described above.

FIG. 1 is a diagram showing the flow of main-line signals in the video signal transmission apparatus according to the present embodiment. The video signal transmission device operates so that the following main line signal processing is automatically performed according to the number of effective lines of the CCD unit 2 mounted on the camera 1. The number of active lines is 1035
If fixed at line or 1080 line, CC
The information processing of the number of D effective lines is forcibly processed as 1035 lines or 1080 lines.

That is, at the time of automatic switching, the number of effective lines is the same in both directions of the main line system and the return system according to the number of effective lines of the CCD unit 2. Further, at the time of manual switching, it can be arbitrarily set regardless of the information of the CCD unit 2. Here, since the switching system of the CCD unit 2 based on the number of effective lines of 1035/1080 is still in a transition period, the switching setting or the fixed setting (automatic setting) is adopted in order to take into consideration any system operation. ing.

In the following description, it is assumed that the signal processing mode is in accordance with the number of CCD effective lines. FIG.
In the camera 1, the number of effective lines is selectively detachable by inserting and removing a plug by a plug-in method.
And a CPU control unit (1) that detects information on the number of effective lines and outputs a control signal for controlling the following signal processing. ) 3 and a signal processing unit (1) 4 for switching the signal processing according to the control signal in accordance with the information on the number of effective lines.

The CCU 6 detects a main line signal and information on the number of valid lines, and outputs a control signal for controlling the following signal processing.
And a signal processing unit (2) 8 for switching and outputting the signal processing according to the control signal according to the information on the number of effective lines.
A signal processing unit (3) 9 for performing signal processing for conversion into another standard signal in accordance with information on the number of effective lines;
Is configured.

Further, the camera 1 and the CCU 6 are connected by an optical fiber 5, and a system for transmitting an HDTV video signal, a communication command, and the like in two directions is constructed by the camera 1, the CCU 6, and the optical fiber 5.

As described above, the CCD unit 2 of the camera 1 has two types, one for an effective line number of 1035 lines and one for 1080 lines. The number of active lines 1035 lines is
In Japan, it is compatible with the current HDTV broadcast image format. The number of effective lines of 1080 lines is the ATS proposed by the broadcasting industry in terrestrial digital broadcasting.
It is compatible with HDTV broadcasting of C (Advanced Television System Committee) specifications, and is currently SMPTE (Society of Motion Picture and Television Engineers), B
It is standardized by TA (Broadcasting Technology Association). These two types of CCD units are used properly according to the purpose.

The information on the number of effective lines is, for example, low level (L) when a CCD unit for 1035 effective lines is mounted on the camera, and 1080 effective lines.
When a line CCD unit is mounted on a camera, a high-level (H) signal is used for detection. This information S1 is detected by the CPU control unit (1) 3, taken into an internal memory, and managed as effective line number information of the system. The effective line number information S2 is supplied to the signal processing unit (1) 4 and, at the same time, transmitted to the CCU 6 via the optical fiber 5 as S3.

HDTV output from CCD unit 2
The signal S4 is supplied to the signal processing unit (1) 4,
According to the effective line number information S2 from the PU control unit (1) 3, the internal signal processing is automatically switched to 1035 lines or 1080 lines to perform appropriate signal processing.

More specifically, different signal processing is performed depending on whether the number of effective lines is 1,035 or 1,080. For example, the fact that the total number of lines is the same as 1125 lines, but the number of effective lines differs means that the blanking period differs. Because of the interlace standard, the blanking line is 45 + 45 for 1035 lines and 22 + 23 for 1080 lines. In signal processing, for example, processing in this blanking period such as multiplexing of character information is different. Also, the conversion ratio from the HDTV signal to the current system (480 lines) described later and the matrix processing are different between the 1035 lines and the 1080 lines.

The contents of the signal processing in the signal processing unit (1) 4 will be described below. First, the signal processing unit (1) 4 performs camera-specific processing (matrix conversion, detail, skin tone, etc.) on the video signal (G, B, R) S4 of the HDTV signal supplied from the CCD unit 2. Is applied.

Second, a separately processed audio signal is multiplexed with a video signal. Third, CPU control data is multiplexed on the video signal. Fourth, a process for obtaining a coaxial output is performed. Fifth, a process for obtaining an optical output is performed. Sixth
Then, the main video signal and the return video signal are switched as necessary and displayed on the viewfinder.

The signal processed as described above is output to the outside as an output signal S5, and the signal processed signal S6 is transmitted to the CCU 6 via the optical fiber 5 together with the CCD effective line number information S3.

The HDTV signal S transmitted to the CCU 6
7 and the CCD effective line number information S8 are stored in the signal processing unit (2) 8 and the CPU control unit (2), respectively.
7 is supplied. Further, the CCD effective line number information S9 taken into the CPU control unit (2) 7 is supplied to the signal processing unit (2) 8, and the HDTV signal S7
Is subjected to appropriate signal processing for 1035 lines or 1080 lines in the signal processing unit (2) 8.

More specifically, signal processing for different blanking periods is performed according to the difference between the effective line number of 1035 lines and 1080 lines so as to correspond to the signal processing unit (1) 4 described above. In addition, the conversion ratio from the HDTV signal to the current system (480 lines), which will be described later, and the matrix processing are processed in accordance with the 1035 lines and the 1080 lines, respectively.

The contents of the signal processing in the signal processing unit (2) 8 will be described below. First, the signal processing unit (2) 8 performs processing for converting an optical input supplied from the camera video signal HDTV signal (Y, P _B, P _R), the multiplexed signal light control data and voice signal . Second
Then, CPU control data is extracted from the multiplexed signal and supplied to the CPU control unit (2) 7. Third, an audio signal is extracted from the multiplex signal and output as an audio signal. Fourth, a marker signal required for a video signal,
Mixes character signals. Fifth, the camera 1 and the CCU 6 are synchronized. Sixth, a phase management process of the video signal is performed. Seventh, a process for obtaining an HDTV output signal is performed.

The signal processed by the signal processing unit (2) 8 is output to the outside as an HDTV output signal S10. Similarly, the signal S12 subjected to the signal processing is supplied to the signal processing unit (3) 9, and is converted into another signal standard based on the CCD effective line number information S11.

The contents of the signal processing in the signal processing unit (3) 9 will be described below. For example, the signal is converted into a standard TV signal standard by down-conversion. Specifically, by down-converting from an HDTV video signal, 1080 to 480 lines or 1
When converting 035 lines to 480 lines, 103
525 of 480 lines (the number of valid lines in the current system) by changing the conversion ratio using 5/1080 valid line number information
Convert to standard signal. By this processing, D1, D2 or an analog signal (NTSC) of a standard TV signal can be handled.

In this manner, in the main line system, a signal processing method at the subsequent stage can be automatically or arbitrarily selected based on the number of effective lines of the CCD unit 2.

FIG. 2 is a diagram showing a flow of a signal of a return system of the video signal transmission apparatus according to the present embodiment. The video signal transmission device includes a CCD unit 2 mounted on the camera 1.
The following return system signal processing is automatically performed in accordance with the number of effective lines. When the number of effective lines is fixed at 1035 lines or 1080 lines, information on the number of CCD effective lines is forcibly processed as 1035 lines or 1080 lines.

In the following description, it is assumed that the signal processing mode is in accordance with the number of CCD effective lines. FIG.
In the camera 1, the number of effective lines is selectively detachable by inserting and removing a plug by a plug-in method.
And a CPU control unit (1) that detects information on the number of effective lines and outputs a control signal for controlling the following signal processing. 3) and a signal processing unit (5) 10 for switching the signal processing according to the control signal in accordance with the information on the number of effective lines.

The CCU 6 detects a return signal and information on the number of valid lines, and outputs a control signal for controlling the following signal processing. The CPU control unit (2) 7 performs signal processing in accordance with the information on the number of valid lines. And a signal processing unit (4) 11 for switching and outputting according to a control signal.

The camera 1 and the CCU 6 are connected by an optical fiber 5, and a system for transmitting an HDTV video signal, a communication command, and the like in two directions is constructed by the camera 1, the CCU 6, and the optical fiber 5.

The information on the number of effective lines is, for example, low level (L) when a CCD unit for 1035 effective lines is mounted on a camera, and 1080 effective lines.
When the line CCD unit 2 is mounted on the camera 1, a high-level (H) signal line is used for detection.
This information S1 is detected by the CPU control unit (1) 3, taken into an internal memory, and managed as effective line number information of the system. This effective line number information S2 is supplied to the signal processing unit (5) 10 and at the same time,
3 is transmitted to the CCU 6 via the optical fiber 5.

The CCD effective line number information S8 transmitted to the CCU 6 is transmitted to the CPU control unit (2) 7
Is supplied to the signal processing unit (4) 11 as CCD effective line number information S9. CCU
6, the return signal S10 is an HDTV signal (analog, digital) and a standard TV signal (analog, digital).
Digital) is acceptable, and in the case of a standard TV signal, it is converted into an HDTV signal by a simple up-converter function in the signal processing unit (4) 11.
The conversion line number at that time, 1035 lines or 1080 lines, is the CCD effective line number information S described above.
9 and appropriate signal processing is performed. In the case of an HDTV signal, the above-described appropriate blanking processing and the like are performed according to the CCD effective line number information S9.

The contents of the signal processing in the signal processing unit (4) 11 will be described below. First, processing of input of a return signal input from the outside is performed. Specifically, H
In the case of the return video signal of the DTV signal, the above-described blanking processing and phase management are performed. Also, 52
In the case of a 5-line standard (SD) TV signal, up-conversion is performed to match the number of lines (number of effective lines: 1035/1080), and matrix conversion is performed for color matching.

Second, a return video signal of a standard (SD) TV signal of 525 lines up-converted to the first HDTV signal or the HDTV signal is selectively input and supplied to the camera 1 as a return video signal. Is done.

Third, the audio signal is multiplexed with the return video signal. Fourth, the CPU control data is multiplexed on the return video signal. Fifth, the multiplexed return video signal is converted into an optical output and supplied to the camera 1.

The signal S7 subjected to the appropriate signal processing in this way is transmitted to the camera 1 via the optical fiber 5, and the video signal S6 is converted to a signal processing unit (5) 10
Supplied to Appropriate signal processing is performed in the signal processing unit (5) 10 according to the CCD effective line number information, and the signal S5 is output as an HDTV signal. This HDTV signal is used for external output, a viewfinder, and the like.

The contents of the signal processing in the signal processing unit (5) 10 will be described below. First, the optical input supplied from the CCU 6 is converted into a multiplexed signal of a return video signal, a CPU control signal, and an audio signal. Second,
Extract CPU control data from multiplexed signal and
It is supplied to the PU control unit (1) 3. Third
Then, an audio signal is extracted from the multiplex signal and output. 4th
Next, the return video signal and the camera main line signal are switched as necessary and output to the camera viewfinder.

The optical transmission format of the optical fiber 5 is ARIB STANDARD BTA-S0.
04B, S005B, and S006B standards.

The above-mentioned return signal is a video signal to be transmitted from the CCU 6 to the camera head 1 in a so-called broadcast camera system. Usually, the video actually on air is transmitted by the camera operator. It is used for viewing with a viewfinder or the like.

In the present embodiment described above,
The switching of the signal processing mode is performed in the signal processing units in the camera 1 and the CCU 6, but may be performed independently in the signal processing units in the camera or the CCU.

The signal processing mode may be switched by providing the external control device such as the MSU 33 shown in FIG. 3 or a not-shown RCP (remote control panel) with its function. The cameras 30 and (31) shown in FIG. 3 correspond to the cameras 1 in FIGS. 1 and 2, and the CCU 32 shown in FIG.
The optical fiber 34 corresponding to U6 and shown in FIG.
5) corresponds to the optical fiber 5 of FIGS. 1 and 2, respectively.

The video signal transmitting apparatus according to the present embodiment has a CCD unit as an image pickup means for picking up an image of a subject, an optical fiber as a transmission means for transmitting a video signal picked up by the image pickup means, and a signal transmitted by the transmission means. A CCU as signal processing means for processing the video signal;
In the video signal transmission device provided with the above, the video signal includes the effective line number information as identification information for identifying the number of effective vertical lines of the video signal imaged by the imaging means. / 1080
Even if the format of the video signal imaged by the imaging means is changed by replacing the line CCD unit, the signal processing means at the subsequent stage automatically generates the signal according to the identification information for identifying the number of effective vertical lines of the video signal. Since the processing is performed, it is not necessary to adjust the signal processing means according to the format change, no change setting is required, the circuit can be shared, and the model can be unified,
Low cost can be realized. HDTV
In the system, the number of effective lines is 1035 to 108
Because it is the transition period to 0 line, 1080 line CC
When a system using a D unit is desired, the system can be changed only by replacing the CCD unit. When it is desired to temporarily construct a system using CCD units having different effective lines, the system can be changed only by changing the system settings.

Further, the video signal transmitting apparatus of the present embodiment is, as described above, a video camera having a CCD unit as an image pickup means, or a CC camera as a signal processing means.
The identification unit for identifying the identification information is provided in the signal processing unit having U, so that not only the signal processing unit that performs signal processing on the video signal imaged by the imaging unit but also the imaging unit automatically based on the identification information. Signal processing can be performed.

In the video signal transmission apparatus according to the present embodiment, the video camera or the CCU as a signal processing unit switches the main line processing system of the video signal according to the identification information. Not only the signal processing unit that processes the main line video signal but also the video camera can automatically perform the main line signal processing based on the identification information.

In the video signal transmission apparatus according to the present embodiment, the video camera or the CCU serving as the signal processing unit switches the video signal return processing system according to the identification information. Not only the signal processing unit that processes the return video signal but also the video camera can automatically perform the return signal processing based on the identification information.

Further, in the video signal transmission apparatus of the present embodiment, the video camera or the CCU serving as a signal processing unit switches the main line processing system and the return processing system of the video signal according to the identification information. Thus, not only a signal processing unit for signal-processing the main-line and return-system video signals captured by the camera, but also a video camera can automatically perform main-line and return-system signal processing based on the identification information.

Further, in the video signal transmission apparatus of the present embodiment, the main line processing system of the video signal is arbitrarily and selectively switched regardless of the identification information in the video camera or the CCU as a signal processing unit. A video camera as well as a signal processing unit that performs signal processing on main line video signals captured by a camera can perform arbitrarily selected main line signal processing regardless of identification information.

In the video signal transmission apparatus according to the present embodiment, the return processing system of the video signal is arbitrarily and selectively switched regardless of the identification information in the video camera or the CCU as the signal processing unit. A video processing camera as well as a signal processing unit that performs signal processing on a return video signal captured by a camera can perform arbitrarily selected return signal processing regardless of identification information.

Further, in the video signal transmission apparatus of the present embodiment, the main line processing system and the return processing system of the video signal in the video camera or the CCU as the signal processing unit are arbitrarily and selectively regardless of the identification information. Therefore, not only the signal processing unit for signal processing of the main line and return system video signals captured by the video camera but also the video camera can perform arbitrarily selected main line and return system signal processing regardless of the identification information. It can be carried out.

[0071]

According to the present invention, there is provided a video signal transmitting apparatus, comprising: an image capturing means for capturing an image of a subject; a transmitting means for transmitting a video signal captured by the image capturing means; and a signal transmitting means for transmitting the video signal transmitted by the transmitting means. Signal processing means for processing;
In the video signal transmission device comprising:
Since the identification information for identifying the number of effective vertical lines of the video signal imaged by the imaging means is included, even if the format of the video signal imaged by the imaging means is changed by replacing the imaging means, the video signal In accordance with the identification information for identifying the number of effective vertical lines, signal processing is automatically performed in the signal processing means in the subsequent stage, so that adjustment of the signal processing means accompanying a format change is unnecessary, and
No change setting is required, and the circuit can be shared.
Since the models can be unified, there is an effect that the cost can be reduced. In the HDTV system, the number of effective lines is a transition period from 1,035 lines to 1,080 lines, so that when a system using a 1080-line CCD unit is desired, it can be changed only by replacing the CCD unit. Also,
When it is desired to temporarily construct a system using CCD units having different effective lines, the effect is achieved that the system can be changed only by changing the system settings.

Further, in the video signal transmission apparatus of the present invention, since the video camera having the imaging means or the signal processing section having the signal processing means is provided with the identification section for identifying the identification information, There is an effect that the signal processing can be automatically performed based on the identification information not only on the signal processing unit side that processes the video signal captured by the unit but also on the imaging unit side.

In the video signal transmission apparatus according to the present invention, the video camera or the signal processing section switches the main line processing system of the video signal according to the identification information. In addition to the signal processing unit that performs signal processing on the system video signal, the video camera can automatically perform main line signal processing based on the identification information.

Further, in the video signal transmission apparatus according to the present invention, the return processing system of the video signal is switched in the video camera or the signal processing section according to the identification information. In addition to the signal processing unit that performs signal processing on the system video signal, the video camera can automatically perform the return system signal processing based on the identification information.

In the video signal transmission apparatus according to the present invention, the video camera or the signal processing section switches the main line processing system and the return processing system of the video signal according to the identification information. In addition to the signal processing unit that processes the captured main line and return video signals, the video camera can automatically perform main line and return signal processing based on the identification information.

Also, in the video signal transmission apparatus according to the present invention, the video camera or the signal processing section optionally switches the main line processing system of the video signal irrespective of the identification information. Thus, not only the signal processing unit that processes the video signal of the main line captured by the camera but also the video camera can perform the signal processing of the main line arbitrarily selected regardless of the identification information.

Further, in the video signal transmission apparatus of the present invention, the video camera or the signal processing section can arbitrarily and selectively switch a return processing system of the video signal regardless of the identification information. Thus, not only the signal processing unit that performs signal processing on the return video signal captured by the camera, but also the video camera can perform the return signal processing arbitrarily selected regardless of the identification information.

In the video signal transmission apparatus of the present invention, the video camera or the signal processing section selectively switches the main line processing system and the return processing system of the video signal irrespective of the identification information. Therefore, not only the signal processing unit that processes the main and return video signals captured by the video camera, but also the video camera performs arbitrarily selected main and return signal processing regardless of the identification information. This has the effect that it can be performed.

[Brief description of the drawings]

FIG. 1 is a diagram showing a main signal flow in a video signal transmission apparatus according to an embodiment.

FIG. 2 is a diagram illustrating a flow of a signal of a return system of the video signal transmission device according to the present embodiment.

FIG. 3 is a configuration diagram of a camera-CCU system using the video signal transmission device according to the present embodiment.

[Explanation of symbols]

Reference Signs List 1 ... Camera 2, ... CCD unit, 3 ... CPU control unit (1), 4 ... Signal processing unit (1), 5 ... Optical fiber, 6 ... CCU, 7 ... C
PU control unit (2), 8 ... signal processing unit (2), 9 ... signal processing unit (3), 10 ...
Signal processing unit (5), 11 ... Signal processing unit (4), S1 ... CCD effective line number information, S10 ...
Return signal, S4 ... HDTV video signal

Claims (8)

[Claims] 1. An image capturing means for capturing an image of a subject, a transmitting means for transmitting a video signal captured by the image capturing means, and a signal processing means for performing signal processing on the video signal transmitted by the transmitting means. The video signal transmission device according to claim 1, wherein the video signal includes identification information for identifying the number of effective vertical lines of the video signal imaged by the imaging means. 2. The video signal transmission device according to claim 1, wherein an identification unit for identifying the identification information is provided in a video camera having the imaging unit or a signal processing unit having the signal processing unit. Video signal transmission device. 3. The video signal transmission device according to claim 2, wherein a main line processing system of the video signal is switched in the video camera or the signal processing unit according to the identification information. 4. The video signal transmission device according to claim 2, wherein a return processing system of the video signal is switched in the video camera or the signal processing unit according to the identification information. 5. The video signal transmission device according to claim 2, wherein a main line processing system and a return processing system of the video signal are switched in the video camera or the signal processing unit according to the identification information. Signal transmission device. 6. The video signal transmission device according to claim 2, wherein a main line processing system of the video signal is arbitrarily and selectively switched in the video camera or the signal processing unit regardless of the identification information. Video signal transmission device. 7. The video signal transmission device according to claim 2, wherein a return processing system of the video signal in the video camera or the signal processing unit is arbitrarily and selectively switched regardless of the identification information. Video signal transmission device. 8. The video signal transmission device according to claim 2, wherein a main line processing system and a return processing system of the video signal are arbitrarily and selectively switched in the video camera or the signal processing unit regardless of the identification information. A video signal transmission device characterized by the above-mentioned.