JPH09233379A - Image pickup device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain miniaturization and power saving by providing a camera head use signal processing circuit to a side of a base station and sending back a view finder signal as a return input so as to reduce the circuit scale of a camera head. SOLUTION: A signal from an image pickup element 1 is processed by a pre-processing circuit 2 and a 1st transmission circuit 4 and the result is fed to a base station section A3. A 2nd transmission circuit 5 decodes a signal from the pre-processing circuit 2 and gives the signal to a camera head use signal processing circuit 6. The signal is processed thereat and the result is fed to a base station signal processing circuit 7, which outputs a video input signal and receives a return signal and an audio signal from a changeover circuit 8. The changeover circuit 8 selects the return signal or a view finder signal from the camera head signal processing circuit 6. Thus, the circuit scale of the camera head is reduced and miniaturization and power saving are attained by using the changeover circuit to send back the view finder signal to the camera head as the return input as above.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handy type image pickup device having a camera head portion, a transmission device portion, and a base station portion.

[0002]

2. Description of the Related Art As a conventional image pickup device, there is a structure as shown in FIG. FIG. 5 is a block diagram showing the configuration of a conventional image pickup apparatus. In FIG. 5, E1 is a camera head unit, E2 is a transmission device unit, and E3 is a base station unit. 41 is a multiple frame-interline transfer CCD (Multiple Frame-Interline-Tra)
Multiple frame interline transfer type image pickup device (hereinafter referred to as M-FIT type image pickup device) using nsfer CCD, and 42 performs preamplifier processing, black balance correction, white balance correction, pregamma processing, prinny processing, etc. A pre-processing circuit 43 is a line rearrangement circuit that rearranges the odd line and even line signals output from the M-FIT type image sensor 41 in a regular order. Reference numeral 44 denotes a camera head signal processing circuit that performs processing such as gamma, auto knee, matrix, and enhancer on the output signal of the line rearrangement circuit 43, and 49 denotes a monitor view finder output from the camera head signal processing circuit 44. A signal and a monitor switching circuit for switching a return signal sent from the base station unit E3 side through the transmission device unit E2, and 45 is a viewfinder for displaying a viewfinder signal or a return signal output from the monitor switching circuit 49.

Reference numeral 48 denotes a process for receiving a signal from the camera head section E1 through the transmission apparatus section E2 and outputting a main signal to a video tape recorder or another image pickup apparatus, an audio signal,
This is a base station signal processing circuit that processes a signal (return signal) or the like from another imaging device and supplies it to the viewfinder 45 through the transmission device section E2.

Reference numeral 46 is a first transmission circuit arranged on the camera head E1 side, 47 is a second transmission circuit arranged on the base station E3 side, and 46A and 47A are first and second transmission circuits. It is a transmission line connecting the circuits 46 and 47. The first transmission circuit 46 is a main signal (R, G, B signal or luminance signal and two color difference signals) obtained from the camera head signal processing circuit 44 on the camera head E1 side.
For transmitting the data to the second transmission circuit 47 through the transmission line 46A, and the transmission line 4 from the second transmission circuit 47.
It has a function of processing a return signal of the base station signal processing circuit 48 transmitted through 7A, a voice signal and the like and supplying the processed signal to the monitor switching circuit 49. The second transmission circuit 47 restores the output signal of the camera head signal processing circuit 44 transmitted from the first transmission circuit 46 through the transmission path 46A to a signal which can be processed by the base station signal processing circuit 48, and the base signal. The station signal processing circuit 48 has a function of performing processing for transmitting a return signal, a voice signal and the like to the first transmission circuit 46.

The operation of the conventional image pickup apparatus configured as described above will be described with reference to FIGS. 5, 6 and 7. In recent years, EDTV2 aimed at widening terrestrial broadcasting and improving image quality
Broadcast has started. For high image quality, a progressive scanning method of sequentially scanning is introduced instead of the conventional interlaced method. An image pickup device using an M-FIT type image pickup device has been proposed as a device that can realize the progressive scan type image pickup device at low cost and with high performance.

First, the M-FIT type image pickup device will be described. FIG. 6 is a schematic diagram showing the configuration of the M-FIT type image sensor. In FIG. 6, φVA and φVB are vertical transfer electrodes. The operation will be briefly described. In the vertical blanking period, first, the charges of the photodiodes on the odd lines are transferred from the image area to the storage areas on the vertical CCD in the vertical primary transfer, and the charges of the photodiodes in the even lines are transferred in the vertical secondary transfer. Charge is vertical from image area to storage area CC
The charges of the photodiodes on the odd lines transferred by the vertical primary transfer are transferred from the upper part to the lower part on the vertical CCD in the storage area while being transferred on the vertical CCD. That is, the charges of the photodiodes on the odd and even lines are time-divisionally transferred. Therefore, in the storage area, the conventional image pickup device has only half the capacity of all photodiodes, whereas the M-FIT type image pickup device has a capacity for storing all signal charges. The horizontal transfer causes the signal charges to be read line by line at a speed twice that of conventional (interlaced) scanning. In this way, all the charges are read out within one field.

However, the output signal of the M-FIT type image pickup device is not output in the form of progressive scanning. That is, the signal charge group of the odd line is first output, and the signal charge group of the even line is then output. This is shown in FIG. FIG. 7 (a)
Is a schematic diagram showing an input signal to the image area of the M-FIT type image pickup device, and FIG. 7B is a schematic diagram showing an output signal showing a state of the output signal at that time. Therefore, in order to return to the normal progressive scanning form, it is necessary to convert the signal into a digital signal, perform normal camera processing, and rearrange lines using a field memory. The line rearrangement circuit 43 in FIG. 5 functions as such, and after the preprocessing is performed by the preprocessing circuit 42, the rearrangement is performed.

The signal converted into a regular progressive scanning signal by the line rearrangement circuit 43 is subjected to gamma processing, auto knee processing, matrix processing, enhancer processing, etc. by the camera head signal processing circuit 44, and the camera head section E1.
The usual signal processing in step 1 is performed, and the main video signal and the viewfinder signal are output. The main video signal is composed of a luminance signal and two color difference signals or R, G, B signals, etc., and the viewfinder signal is a luminance signal or R,
It consists of G and B signals.

The viewfinder 45 has a luminance signal from the camera head signal processing circuit 44 or R, G, B signals.
Signal for viewfinder such as signal and first transmission circuit 46
And a return signal from the monitor switching circuit 49 are switched and supplied. The first on the camera head E1 side
The transmission circuit 46 performs multiplex processing, encoding processing, and the like for transmitting the video signal, the audio signal, and the control signal to the base station E3 side, and sends the signals to the second transmission circuit 46 through the transmission path 46A. In addition, when transmission is performed by optical transmission or the like, it is further converted into electricity and light by the first transmission circuit 46 and output.

In the second transmission circuit 47 on the side of the base station E3, a process reverse to that of the first transmission circuit 46 is performed, and the signal processed on the side of the camera head E1 is reproduced. After that, the base station signal processing circuit 48 that performs signal processing on the side of the base station unit E3 outputs the video signal (return signal) or audio from the other image pickup device to the video tape recorder or the other image pickup device. Processing for transferring the signal to the camera head E1 side is performed.

[0011]

With the above-mentioned configuration, even if an image pickup apparatus compatible with EDTV2 of high image quality, progressive scanning, and widening can be realized by using the M-FIT type image pickup element 41, it is a normal camera head. It is necessary to perform the line rearrangement process using the field memory in addition to the signal processing for use. This process is performed in the camera head unit E1.
There is a problem that the circuit scale and heat generation increase.
Therefore, the conventional housing of the camera head portion E1 (particularly a handy type camera system) has problems that the printed board does not fit in and the housing is large, and that heat measures must be taken.

Even in the case of an image pickup apparatus using a normal image pickup element, since the camera head section performs normal signal processing for the camera head, there is a problem of an increase in circuit scale of the camera head section and an increase in heat generation. As a result, the camera head signal processing circuit is provided, so that it is necessary to increase the size of the body of the camera head and take measures against heat generation, which is a factor that hinders the downsizing of the camera head.

An object of the present invention is to provide an image pickup apparatus which can reduce the circuit scale of the camera head section. Another object of the present invention is to provide a high-performance and high-quality image pickup device compatible with the next-generation broadcasting system using an M-FIT type image pickup device, and a camera having a size similar to that of an image pickup device using a normal image pickup device. An object of the present invention is to provide an imaging device that enables the housing of the head portion to be used and does not require heat measures.

Still another object of the present invention is to provide an image pickup apparatus capable of using a viewfinder compatible with the current broadcast system even in a high performance and high image quality image pickup apparatus compatible with the next generation broadcast system.

[0015]

According to another aspect of the present invention, there is provided a camera head signal processing circuit for performing signal processing for a camera head in a base station section, and a signal for a viewfinder of the camera head signal processing circuit. The return signal is switched and added as a return input to the base station unit, and the return signal is supplied from the base station unit to the viewfinder of the camera head unit through the transmission device unit.

According to this structure, since the camera head signal processing circuit is eliminated from the camera head portion, the circuit scale of the camera head portion can be reduced. The image pickup apparatus according to claim 2, wherein a camera head signal processing circuit for performing camera head signal processing is provided in the base station unit,
The viewfinder signal and the return signal of the camera head signal processing circuit are switched by the switching circuit and added as the return input of the base station signal processing circuit, and the return signal from the base station signal processing circuit is passed through the first and second transmission circuits. It is supplied to the viewfinder of the camera head.

According to this structure, the camera head signal processing circuit is eliminated from the camera head portion, so that the circuit scale of the camera head portion can be reduced. The image pickup apparatus according to claim 3, wherein a line rearrangement circuit that performs line rearrangement processing of the output signal of the preprocessing circuit and a camera head signal processing circuit that performs camera head signal processing are provided in the base station unit, and the camera head signal is provided. The viewfinder signal and the return signal of the processing circuit are switched by the switching circuit and added as the return input of the base station signal processing circuit, and the return signal from the base station signal processing circuit is passed through the first and second transmission circuits to the camera head unit. I am trying to supply it to the viewfinder.

According to this configuration, the line rearrangement circuit and the camera head signal processing circuit are eliminated from the camera head section, so that the circuit scale of the camera head section can be reduced, and the M-FIT type image sensor is used. Even in high-performance, high-quality imaging devices compatible with next-generation broadcasting systems, it is possible to use a camera head housing that is about the same size as an imaging device that uses a normal imaging element, and there is no need to take heat measures. Good.

According to another aspect of the image pickup apparatus of the present invention, a camera head signal processing circuit for performing camera head signal processing and a system conversion circuit for performing system conversion of a viewfinder signal of the camera head signal processing circuit are provided in a base station section. A viewfinder signal of the system conversion circuit and a return signal are switched by a switching circuit and added as a return input of the base station signal processing circuit, and the return signal from the base station signal processing circuit is passed through the first and second transmission circuits. It is supplied to the viewfinder of the head.

According to this structure, since the camera head signal processing circuit and the format conversion circuit are eliminated from the camera head section, the circuit scale of the camera head section can be reduced, and the high performance and high performance for the next-generation broadcasting system can be achieved. Even for image quality image pickup devices, the same size of camera head housing as the image pickup device using a normal image pickup element can be used, and no special heat countermeasures are required. Even in high-performance, high-quality image pickup devices, etc., the viewfinder compatible with the current broadcasting system can be used, which is inexpensive.

According to another aspect of the image pickup device of the present invention, only the first line rearrangement circuit having a simple structure for rearranging the lines of the viewfinder signals is arranged in the camera head portion.
Since the second line rearrangement circuit having a complicated structure for rearranging the main signals is arranged in the base station unit, a high-performance and high-quality image pickup device for the next-generation broadcasting system using the M-FIT type image pickup device, etc. However, the circuit scale of the camera head section can be reduced.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An image pickup apparatus according to a first aspect of the present invention is a video tape recorder which processes an image pickup signal from an image pickup device and the like, and a camera head portion which displays a viewfinder signal on the viewfinder. And the like, and a base station unit for inputting a return signal from another imaging device and the like, and a transmission device unit for transmitting a signal between the camera head unit and the base station unit, A signal processing circuit for the camera head that performs processing such as gamma, auto knee, matrix, and enhancer is installed in the base station section,
Also, the viewfinder signal and the return signal obtained from the camera head signal processing circuit are switched and added to the base station as a return input, and the base station supplies the viewfinder of the camera head through the transmission device. It is characterized by having done.

According to this structure, the camera head signal processing for the signal of the camera head section is performed in the base station section, and the viewfinder signal and the return signal are transmitted from the base station section to the camera head section through the transmission device section. Supplied to the viewfinder.
Then, normally, by supplying the viewfinder signal to the viewfinder of the camera head through the transmitter, the viewfinder signal is displayed on the viewfinder of the camera head, and when the return signal is input, the return signal is transmitted to the transmitter. The return signal is displayed on the viewfinder of the camera head by supplying it to the viewfinder of the camera head through.

An image pickup apparatus according to a second aspect of the present invention comprises a camera head section, a base station section, and a transmission apparatus section. The camera head section converts an optical signal into an electric signal, and a signal of the image pickup element is a low-pass filter. It consists of a pre-processing circuit that performs processing, amplification processing, etc., and a view finder that displays the view finder signal, and the base station unit transmits the output signal of the pre-processing circuit to the gamma, auto knee, matrix, enhancer, etc. And a signal processing circuit for a camera head that outputs a main signal and a viewfinder signal, and a main signal output from the camera head signal processing circuit is supplied to video recording means such as a video tape recorder. Encode and return the input signal through the transmitter. Base station signal processing by switching between a base station signal processing circuit that performs processing for supplying to the inder, a viewfinder signal output from the camera head signal processing circuit, and a return signal output from another imaging device, etc. A switching circuit for supplying to the return input of the circuit, the transmission device section is provided with a first transmission circuit provided on the camera head section side, a second transmission circuit provided on the base station section side, and the first and second transmission circuits. And a return path transmitted from the second transmission circuit as well as a process for transmitting the output signal of the preprocessing circuit to the second transmission circuit by the first transmission circuit. The second transmission circuit processes the signal transmitted from the first transmission circuit by the camera head signal processing circuit. It has a return signal output from the processing and base station signal processing circuit for converting the signal to the first such as to carry out processing for transmitting to the transmission circuit can be characterized.

According to this structure, the signal obtained from the image pickup device in the camera head section is processed by the preprocessing circuit and then converted into a signal that can be transmitted by the first transmission circuit, and transferred to the base station section side. On the base station side, after the preprocessed signal is restored by the second transmission circuit, camera head signal processing such as gamma, auto knee, matrix and enhancer is performed by the camera head signal processing circuit. The signal processed by the signal processing circuit for the camera head is processed by the base station signal processing circuit for outputting a video signal to a video recording means such as another image pickup device or a video tape recorder, or conversely a return from the other image pickup device. Processing for transmitting signals and audio signals to the camera head side is performed. In the switching circuit, the viewfinder signal from the camera head signal processing circuit and the return signal from the other image pickup device system are switched and output to the return input of the base station signal processing circuit. As a result, a viewfinder signal or a return signal is displayed on the viewfinder of the camera head section.

An image pickup apparatus according to a third aspect of the present invention comprises a camera head section, a base station section and a transmission apparatus section, and the camera head section converts an optical signal into an electric signal.
Type image sensor, a pre-processing circuit for performing low-pass filter processing, amplification processing, etc. on the signal of the M-FIT type image sensor, and a viewfinder for displaying a viewfinder signal. The base station unit is transmitted through the transmission device unit. And a line rearrangement circuit for rearranging the output signal of the preprocessing circuit in the order of normal lines, and a camera for subjecting the output signal of this line rearrangement circuit to processing such as gamma, auto knee, matrix and enhancer to output a main signal and a viewfinder signal. The main signal output from the head signal processing circuit and the camera head signal processing circuit is subjected to an encoding process for supplying it to a video recording means such as a video tape recorder, and the return input signal is transmitted to the viewfinder through the transmission device section. To the base station A switching signal processing circuit, a switching circuit for switching between a viewfinder signal output from the camera head signal processing circuit and a return signal output from another imaging device, and supplying the return signal to the base station signal processing circuit. The transmission device section comprises a first transmission circuit provided on the camera head section side, a second transmission circuit provided on the base station section side, and a transmission path connecting the first and second transmission circuits. The first transmission circuit performs processing for transmitting the output signal of the preprocessing circuit to the second transmission circuit and processing for supplying the return signal transmitted from the second transmission circuit to the viewfinder, Processing by which the second transmission circuit converts the signal transmitted from the first transmission circuit into a signal that can be processed by the line rearrangement circuit, and a base station Characterized in that a return signal output from the No. processing circuit and to the first such as to carry out processing for transmitting to the transmission circuit.

According to this structure, the signal obtained from the M-FIT type image pickup device in the camera head section is processed by the preprocessing circuit and then converted into a signal which can be transmitted by the first transmission circuit, and is sent to the base station section side. Transferred. On the base station side, after the pre-processed signal is restored by the second transmission circuit, line rearrangement processing is performed by the line rearrangement processing circuit, and then gamma, auto knee, matrix, enhancer, etc. by the camera head signal processing circuit. Signal processing for the camera head is performed. The signal processed by the signal processing circuit for the camera head is processed by the base station signal processing circuit for outputting a video signal to a video recording means such as another image pickup device or a video tape recorder, or conversely a return from the other image pickup device. Processing for transmitting signals and audio signals to the camera head side is performed. In the switching circuit, the viewfinder signal from the camera head signal processing circuit and the return signal from the other image pickup device system are switched and output to the return input of the base station signal processing circuit. As a result, a viewfinder signal or a return signal is displayed on the viewfinder of the camera head section.

An image pickup device according to claim 4 comprises a camera head portion, a base station portion, and a transmission device portion. The camera head portion converts a light signal into an electric signal. Output of the pre-processing circuit transmitted from the base station section through the transmission device section, which consists of a pre-processing circuit that performs low-pass filter processing, amplification processing, etc. on the signal of the image sensor for broadcasting system and a view finder that displays the view finder signal. A signal processing circuit for the camera head that processes the signal by gamma, auto knee, matrix, enhancer, etc., and outputs the main signal and the signal for the viewfinder, and a video tape recorder for the main signal output from the signal processing circuit for the camera head. Encode processing to supply to video recording means such as etc. and return input Signal from the base station signal processing circuit that processes the signal to be supplied to the viewfinder through the transmission device section and the signal for the viewfinder that is output from the signal processing circuit for the camera head. A system conversion circuit for converting to a system signal, and a switching circuit for switching the output signal of the system conversion circuit and the return signal output from another imaging device or the like and supplying it to the return input of the base station signal processing circuit, The transmission device section includes a first transmission circuit provided on the camera head section side, a second transmission circuit provided on the base station section side, and a transmission path connecting the first and second transmission circuits. A process for the first transmission circuit to transmit the output signal of the pre-processing circuit to the second transmission circuit and a retransmitted signal transmitted from the second transmission circuit. And a base station signal, in which the second transmission circuit converts the signal transmitted from the first transmission circuit into a signal that can be processed by the signal processing circuit for the camera head. The present invention is characterized in that processing for transmitting the return signal output from the processing circuit to the first transmission circuit is performed.

According to this structure, the signal obtained from the image pickup device for the next-generation broadcasting system such as HD or ATV system is processed by the pre-processing circuit and then converted into the signal which can be transmitted by the first transmission circuit, and the base station. It is transferred to the department side. On the base station side, after the preprocessed signal is restored by the second transmission circuit, camera head signal processing such as gamma, auto knee, matrix and enhancer is performed by the camera head signal processing circuit. The signal processed by the signal processing circuit for the camera head is processed by the base station signal processing circuit for outputting a video signal to a video recording means such as another image pickup device or a video tape recorder, or conversely a return from the other image pickup device. Processing for transmitting signals and audio signals to the camera head side is performed. In the system conversion circuit, the viewfinder signal output from the camera head signal processing circuit is input and converted into the current system (NTSC). In the switching circuit, the viewfinder signal converted by the system conversion circuit and the return signal from the other imaging device system are switched and output to the return input of the base station signal processing circuit. As a result, a viewfinder signal or a return signal is displayed on the viewfinder of the camera head section.

An image pickup apparatus according to a fifth aspect of the present invention comprises a camera head section, a base station section and a transmission apparatus section, and the camera head section converts an optical signal into an electric signal.
Type image pickup device, a preprocessing circuit for performing low-pass filter processing, amplification processing, etc. on the signal of the M-FIT type image pickup device, and gamma, auto knee, matrix, and
The camera head signal processing circuit that processes the enhancer and outputs the main signal and the viewfinder signal, and the viewfinder signals output from the camera head signal processing circuit are rearranged in the regular line order and supplied to the viewfinder. A second line rearrangement circuit configured to rearrange the output signal of the camera head signal processing circuit transmitted by the base station unit through the transmission device unit in a regular line order, and a second line rearrangement circuit,
The main signal in the regular line order output from the second line rearrangement circuit is subjected to an encoding process for supplying it to a video recording device such as a video tape recorder, and the return input signal is displayed on the viewfinder through the transmission device section. A base station signal processing circuit for performing processing for the transmission, and a transmission device section having a first transmission circuit provided on the camera head section side, a second transmission circuit provided on the base station section side, and a first and a second transmission circuit. And a transmission line connecting the two transmission circuits, wherein the first transmission circuit transmits the main signal output from the camera head signal processing circuit to the first transmission circuit and the second transmission circuit. A signal transmitted from the first transmission circuit by the second transmission circuit after processing for displaying the transmitted return signal on the viewfinder. Characterized in that the return signal that is output from the processing and base station processing circuit into a signal that can be processed by the second line rearranging circuit to the first such as to carry out processing for transmitting to the transmission circuit.

According to this configuration, the signal obtained from the M-FIT type image pickup device is processed by the preprocessing circuit, and then processed by the camera head signal processing circuit such as gamma, auto knee, matrix and enhancer signal processing. Is given. In the first line rearrangement circuit, only the viewfinder signal from the camera head signal processing circuit is rearranged into a signal for normal sequential scanning and supplied to the viewfinder. The first transmission circuit converts the signal from the camera head signal processing circuit into a transmittable signal and transfers it to the base station unit side. On the base station side, after the signal after the camera head signal processing is restored by the second transmission circuit, the main line main signal is rearranged into a signal of regular sequential scanning by the second line rearrangement circuit. After that, the base station signal processing circuit performs processing for outputting the video signal to the image storage means such as another image pickup device or video tape recorder, and conversely transmits the return signal or audio signal from the other image pickup device to the camera head side. Perform processing to do so. As a result, a viewfinder signal or a return signal is displayed on the viewfinder of the camera head section.

Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) FIG. 1 is a block diagram showing the arrangement of an image pickup apparatus according to the first embodiment of the present invention. In FIG. 1, A1 is a camera head unit, A2 is a transmission device unit, and A3 is a base station unit. 1 is a normal image sensor, 2 is preamplifier processing, black balance correction,
A pre-processing circuit 3 for performing white balance correction, pre-gamma processing, pliny processing, etc. is a viewfinder.

Reference numeral 6 is a camera head signal processing circuit for performing processing such as gamma, auto knee, matrix and enhancer on the output signal of the pre-processing circuit 2 of the camera head portion A1 transmitted through the transmission device portion A2, and 7 is a video signal. A base station signal processing circuit for performing processing for outputting a video signal to a tape recorder or another image pickup device, processing for inputting an audio signal, a return signal, etc., 8 is a viewfinder signal output from the camera head signal processing circuit 6 And a signal (return signal) from another imaging device or the like and supplies the signal to the return input of the base station signal processing circuit 7. The base station signal processing circuit 7 has an input interface for a return signal and a sound signal from another image pickup device or the like.

Reference numeral 4 is a first transmission circuit arranged on the camera head portion A1 side, 5 is a second transmission circuit arranged on the base station portion A3 side, and 4A and 5A are first and second transmission circuits. It is a transmission line connecting the circuits 4 and 5. The first transmission circuit 4 transmits the main signal (R, G, B signals or luminance signal and two color difference signals) obtained from the pre-processing circuit 2 on the camera head A1 side via the transmission line 4A. And a function of processing the return signal of the base station signal processing circuit 7 transmitted from the second transmission circuit 5 through the transmission path 5A, a voice signal, etc., and supplying them to the viewfinder 3. The second transmission circuit 5 restores the output signal of the preprocessing circuit 2 transmitted from the first transmission circuit 4 through the transmission line 4A to a signal which can be processed by the camera head signal processing circuit 6, and the base station signal. The processing circuit 7 has a function of performing processing for transmitting a return signal, an audio signal, or the like to the first transmission circuit 4.

The operation of the image pickup apparatus of the first embodiment of the present invention constructed as above will be described below. In the image pickup apparatus of FIG. 1, the preprocessing circuit 2, the viewfinder 3, the first transmission circuit 4, the second transmission circuit 5, and the base station signal processing circuit 7 operate in the same manner as the circuits of the conventional example of FIG. Yes, detailed description is omitted. The major difference from the conventional example is that the camera head signal processing circuit 6 for processing the camera head signal is moved from the camera head portion A1 side to the base station portion A1 side, and is input to the base station signal processing circuit 7. That is, a switching circuit 8 for switching the return input is provided. The image pickup device 1 is a normal image pickup device and is not of the M-FIT type.

The signal obtained by the image pickup device 1 is subjected to preamplifier processing, black balance processing, white balance processing, pregamma processing, and pleni processing in the preprocessing circuit 2 as in the conventional example. After that, the first transmission circuit 4 performs multiplex processing, encoding processing, etc., and transmits to the base station unit A3 side. The signal transmitted from the base station unit A3 side is output from the first transmission circuit 4 and displayed on the viewfinder 3. The second transmission circuit 5 restores the signal (for example, R, G, B signals) obtained by the image pickup device 1 and processed by the pre-processing circuit 2 by a process reverse to that of the first transmission circuit 4, and the camera It is applied to the head signal processing circuit 6. The camera head signal processing circuit 6 performs the same processing as gamma, auto knee, matrix, enhancer, etc., which is the same as the processing normally performed on the camera head side, and supplies it to the base station signal processing circuit 7. Here, the luminance signal or R, G, B signals output for the viewfinder 3 are added to the switching circuit 8. In the base station signal processing circuit 7, a video signal output to a video tape recorder, a return signal and an audio signal from another imaging device, a video tape recorder, etc. are input, and the same processing as in the conventional example is performed. The output signal from the switching circuit 8 is input as the return input. The switching circuit 8 switches between a normal return signal and a viewfinder signal from the camera head signal processing circuit 6 and outputs it to the base station signal processing circuit 7 as a return input. Normally, by selecting the viewfinder signal, the conventional signal is displayed on the viewfinder 3, and when the return signal is input, the return signal is selected and displayed on the viewfinder 3.

As described above, in the image pickup apparatus according to the first embodiment of the present invention, the camera head signal processing circuit 6 is provided on the base station section A3 side, and the viewfinder signal is used as the return input by the switching circuit 8. By sending it back to the camera head unit A1 side, the circuit scale of the camera head unit A1 side can be reduced, which contributes to downsizing of the camera head unit A1 and power saving.
The viewfinder 3 can also display a signal similar to the conventional one. As a result, the housing of the camera head portion A1 can be made small, and no heat countermeasure is required.

(Second Embodiment) FIG. 2 is a block diagram showing the arrangement of an image pickup apparatus according to the second embodiment of the present invention. In FIG. 2, B1 is a camera head part, and B2 is
Is a transmitter unit, and B3 is a base station unit. 1
Reference numeral 1 is an M-FIT type image pickup device, 12 is a pre-processing circuit for performing preamplifier processing, black balance processing, white balance processing, pregamma processing, and prinny processing, and 13 is a viewfinder for displaying luminance signals or R, G, B signals. is there.

In order to solve the problem caused by the output of the M-FIT type image pickup device 16, reference numeral 16 indicates an odd line and an even line of the signal transmitted from the preprocessing circuit 12 of the camera head B1 through the transmission device B2. A line rearrangement circuit for rearranging the signals in a regular order, a camera head signal processing circuit 17 for processing the output signal of the rearrangement circuit 16, such as gamma, auto knee, matrix, enhancer, and the like, 18 a video tape recorder or other A base station signal processing circuit that processes a process for outputting a video signal to the image pickup device, an audio signal, a signal (return signal) from another image pickup device, and 19 is a viewfinder output from the camera head signal processing circuit 17. For the base station by switching the signal for use and the signal (return signal) from other imaging devices. A switching circuit for supplying to the return input of the signal processing circuit 18. The base station signal processing circuit 18 has an input interface for a return signal and a sound signal from another imaging device or the like.

Reference numeral 14 is a first transmission circuit arranged on the camera head B1 side, 15 is a second transmission circuit arranged on the base station B3 side, and 14A and 15A are the first and second transmission circuits. It is a transmission line connecting the circuits 14 and 15. The first transmission circuit 14 transmits the main signal (R, G, B signals or luminance signal and two color difference signals) obtained from the pre-processing circuit 12 on the camera head B1 side through the second transmission circuit 15 through the transmission line 14A. And a function of processing a return signal of the base station signal processing circuit 18 transmitted from the second transmission circuit 15 through the transmission line 15A, a voice signal, etc., and supplying the same to the viewfinder 13. The second transmission circuit 15 returns the output signal of the preprocessing circuit 12 transmitted from the first transmission circuit 14 through the transmission line 14A to a signal that can be processed by the line rearrangement circuit 16, and the base station signal processing circuit 18. First return signal, voice signal, etc.
It has a function of performing processing for transmission to the transmission circuit 14 of FIG.

The difference between the second embodiment and the conventional example is that the line rearrangement circuit 16 and the camera head signal processing circuit 17 are moved to the base station section B3 side, and the first embodiment. Similarly, a switching circuit 19 for switching the return input input to the base station signal processing circuit 18 is provided. The operation of each circuit unit is the same as that of the conventional example and the first embodiment, and the description thereof is omitted.

In the case of this second embodiment, M-FIT
E-type image sensor 11 is used, and the progressive operation is performed.
It is possible to realize a high-quality image pickup device compatible with DTV2 and reduce the circuit scale of the camera head unit B1 as in the first embodiment. Therefore, even in a high-performance and high-quality image pickup device for the next-generation broadcasting system using the M-FIT type image pickup device 11, the B1 of the camera head portion of the same size as the image pickup device using the normal image pickup device is used. The body can be used and there is no need to take heat measures.

(Third Embodiment) FIG. 3 is a block diagram showing the arrangement of an image pickup apparatus according to the third embodiment of the image pickup apparatus according to the present invention. In FIG. 3, C1 is a camera head part,
C2 is a transmission device section, and C3 is a base station section. Reference numeral 21 denotes a next-generation broadcasting system compatible image pickup device such as HD or ATV, and reference numeral 22 denotes a preprocessing circuit for performing preamplifier processing, black balance processing, white balance processing, pregamma processing, prinny processing, or the like. Reference numeral 23 is a viewfinder for displaying a luminance signal or R, G, B signals.

Reference numeral 26 is a preprocessing circuit 2 of the camera head portion C1.
A signal processing circuit for a camera head that performs processing such as gamma, auto knee, matrix, and enhancer on the signal transmitted from 2 through the transmission device section C2, and 27 is for outputting a video signal to a video tape recorder or another imaging device. And a base station signal processing circuit for processing an audio signal, a signal (return signal) from another imaging device, and 28 are signals for a viewfinder in a next-generation broadcasting format output from a signal processing circuit 26 for a camera head. A system conversion circuit for converting the system to the current system (NTSC system, etc.), and 29 switches the output signal of the system conversion circuit 28 and the signal (return signal) from another imaging device etc. and outputs it to the return input of the base station signal processing circuit 27. This is a switching circuit for switching. The base station signal processing circuit 27 has an input interface for a return signal and a sound signal from another imaging device or the like.

Reference numeral 24 is a first transmission circuit arranged on the camera head portion C1 side, 25 is a second transmission circuit arranged on the base station portion C3 side, and 24A and 25A are first and second transmission circuits. It is a transmission line connecting the circuits 24 and 25. The first transmission circuit 24 transmits the main signal (R, G, B signals or luminance signal and two color difference signals) obtained from the preprocessing circuit 22 on the camera head C1 side through the second transmission circuit 25 through the transmission line 24A. And a function of processing a return signal of the base station signal processing circuit 27 transmitted from the second transmission circuit 25 through the transmission path 25A, an audio signal, and the like, and supplying them to the viewfinder 23. The second transmission circuit 25 restores the output signal of the pre-processing circuit 22 transmitted from the first transmission circuit 24 through the transmission path 24A to a signal which can be processed by the camera head signal processing circuit 26, and the base station signal. The processing circuit 27 has a function of performing processing for transmitting a return signal, an audio signal, or the like to the first transmission circuit 24.

The operation of this image pickup apparatus will be briefly described below. The image sensor 21 compatible with the next-generation broadcasting system has an effective horizontal 19
20 pixels, vertical 1035 lines (interlaced scan)
For HD, and for ATV compatible with effective horizontal 1280 pixels and vertical 720 lines (progressive scanning), etc. (the ATV method shows an example). The sampling clock rate is very high at around 74.25 MHz. Therefore, the preprocessing circuit 22 that performs processing such as preamplifier processing, black balance processing, white balance processing, pregamma processing, and prinny processing is a high-speed type for ensuring frequency characteristics. As a result, the circuit scale and power consumption increase. In addition, the circuit scale for subsequent signal processing for camera heads such as gamma, auto knee, matrix, and enhancer will increase. This is remarkable in digital processing.

In the third embodiment, similarly to the first and second embodiments, the camera head signal processing circuit 26 of the camera head portion C1 is moved to the base station portion C3 side, and at the same time. The system conversion circuit 28 is provided on the side of the base station unit C3 to convert the viewfinder signal from the HD, ATV, etc. system to the existing NTSC, etc. system. The signal is input to the switching circuit 29,
It is switched to the return signal and input to the base station signal processing circuit 27 as a return input. After being processed by the base station signal processing circuit 27, it is sent to the second transmission circuit 25, transmitted to the first transmission circuit 24 on the camera head side, and further output to the viewfinder 23. That is, the first transmission circuit 24 is the preprocessing circuit 2
Transmit the 2 signal as it is (as it is in the next-generation broadcasting system),
The second transmission circuit 25 is adapted to transmit a signal of the current NTSC system or the like. In this case, the return signal is also in the current system (NTSC, PAL system, etc.).

By doing so, the viewfinder 2
As for No. 3, the current NTSC, PAL, etc. can be used. Further, even if the scale of the preprocessing circuit 22 on the camera head section C1 side increases, the camera head signal processing circuit 26 moves to the base station section C3 side, so the overall circuit scale of the camera head section C1 is A camera for the next generation can be realized without increasing the number. The operations of the camera head signal processing circuit 26 and the base station signal processing circuit 27 are the same as those in the conventional example, the first and second embodiments, except for the high-speed processing, and the details are omitted.

As described above, in the third embodiment, the first and
Similar to the second embodiment, the circuit scale and power consumption on the camera head C1 side are not increased, the same housing as the conventional camera head can be used, and no heat countermeasure is required. Finder is also the current NTSC, P
The third one that can be used for AL system etc. and can reduce cost
Has the effect peculiar to the embodiment.

(Fourth Embodiment) FIG. 4 is a block diagram showing the arrangement of an image pickup apparatus according to the fourth embodiment of the present invention. In FIG. 4, D1 is a camera head part, and D2 is
Is a transmitter unit, and D3 is a base station unit. 3
Reference numeral 1 is an M-FIT type image pickup device, 32 is a pre-processing circuit for performing preamplifier processing, black balance processing, white balance processing, pre-gamma processing, prinny processing and the like, 33 is a camera head for performing processing such as gamma, auto knee, matrix and enhancer Signal processing circuit, 34 is a first line rearrangement circuit for rearranging the odd-numbered and even-line signals of the viewfinder signal output from the camera head signal processing circuit 33 in a normal order, and 40 is the first line rearrangement circuit. A monitor switching circuit for switching the output signal of the circuit 34 and the return signal sent from the base station unit D3, and 35 is a viewfinder for displaying the signal output from the monitor switching circuit 40.

Reference numeral 38 is a second line rearrangement circuit for rearranging the signals of the odd-numbered and even-numbered lines of the main line system transmitted from the camera head signal processing circuit 33 of the camera head portion D1 through the transmission device portion D2 in a regular order, and 39. Processes the output signal of the second line rearrangement circuit 38 such as a process for outputting a video signal to a video tape recorder or another imaging device, an audio signal, a signal (return signal) from another imaging device, and the like. It is a base station signal processing circuit. The base station signal processing circuit 39 has an input interface for a return signal and a sound signal from another image pickup device or the like.

36 is a first transmission circuit arranged on the camera head D1 side, 37 is a second transmission circuit arranged on the base station D3 side, and 36A and 37A are the first and second transmission circuits 36. , 37 between them. The first transmission circuit 36 includes the main signals (R, G, and G) obtained from the camera head signal processing circuit 33 on the camera head D1 side.
B signal or luminance signal and two color difference signals)
Processing for transmitting to the second transmission circuit 37 through 6A, and base station signal processing circuit 39 transmitted from the second transmission circuit 37 through the transmission line 37A
It has a function of processing the return signal, the audio signal, etc., and supplying them to the monitor switching circuit 40. Second transmission circuit 37
Is processing for returning the output signal of the camera head signal processing circuit 33 transmitted from the first transmission circuit 36 through the transmission path 36A to a signal which can be processed by the second line rearrangement circuit 38, and the base station signal processing circuit 39.
It has a function of performing processing for transmitting the return signal, the voice signal, etc. of the above to the first transmission circuit 36.

The fourth embodiment differs from the conventional example in that the line rearrangement circuit is a camera head unit D1.
Side and the base station section D3 side, the first line rearrangement circuit 34 is on the camera head section D1 side, and the second line rearrangement circuit 38 is on the base station section D3 side. The other circuits are the same as those of the conventional example, and the description of the operation thereof is omitted.

The first line rearrangement circuit 34 on the side of the camera head D1 is only a monitor signal and is a field memory for one channel. Base station section D3
The second line rearrangement circuit 38 on the side is composed of a field memory for three channels for main line signals. That is, in the fourth embodiment, MF
In the progressive-motion imaging device using the IT type image pickup device 31, the line rearrangement circuit necessary for using the M-FIT type image pickup device 31 is limited to the monitor on the camera head part D1 side, and the main line system is the base station part D3. It is arranged on the side. By doing so, the circuit scale on the camera head D1 side can be reduced. For example, M-
When the number of effective pixels of the FIT type image pickup device 31 is about 950 horizontally and 485 vertically and the number of processing bits is 10 bits, about 2.5.
If a memory having a capacity of about M bits is divided into fields for reading and writing for one channel, four memories are required. Therefore, if there are three channels of R, G, and B, there will be twelve, but with the configuration of the fourth embodiment, four for monitoring on the camera head D1 side is sufficient, and M- F
In the image pickup apparatus using the IT type image pickup device 31, it is possible to provide the effect peculiar to this embodiment that the circuit scale on the camera head portion D1 side can be reduced and the camera head portion D1 can be downsized.

[0055]

According to the image pickup apparatus of the present invention, a camera head signal processing circuit for performing camera head signal processing is provided in the base station section, and a viewfinder signal and a return signal of the camera head signal processing circuit are provided. In addition to switching as a return input to the base station unit, a return signal is supplied from the base station unit to the viewfinder of the camera head unit through the transmission device unit, so there is no camera head signal processing circuit from the camera head unit. The circuit scale of the camera head unit can be reduced.

According to another aspect of the image pickup apparatus of the present invention, a camera head signal processing circuit for performing camera head signal processing is provided in the base station section, and a circuit for switching between a viewfinder signal and a return signal of the camera head signal processing circuit. Since the base station signal processing circuit supplies the return signal from the base station signal processing circuit to the viewfinder of the camera head section through the first and second transmission circuits. Therefore, the signal processing circuit for the camera head is eliminated, and the circuit scale of the camera head unit can be reduced.

According to a third aspect of the present invention, in an image pickup apparatus, a line rearrangement circuit for performing line rearrangement processing of output signals of a preprocessing circuit and a camera head signal processing circuit for performing camera head signal processing are provided in a base station section, and a camera is provided. The viewfinder signal and the return signal of the head signal processing circuit are switched by the switching circuit and added as the return input of the base station signal processing circuit, and the return signal from the base station signal processing circuit is passed through the first and second transmission circuits to the camera. Since it is supplied to the viewfinder of the head unit, the line rearrangement circuit and the signal processing circuit for the camera head are eliminated from the camera head unit, and the circuit scale of the camera head unit can be reduced, and the M-FIT type image sensor High performance for next generation broadcasting system using Even in the case of a high-quality image pickup device or the like, in which the circuit scale is increased, it is possible to use a housing of a camera head part having a size similar to that of an image pickup device using a normal image pickup element. It is not necessary to take heat measures.

According to another aspect of the image pickup apparatus of the present invention, a camera head signal processing circuit for performing camera head signal processing and a system conversion circuit for performing system conversion of viewfinder signals of the camera head signal processing circuit are provided in the base station section. A viewfinder signal of the system conversion circuit and a return signal are switched by a switching circuit and added as a return input of the base station signal processing circuit, and the return signal from the base station signal processing circuit is passed through the first and second transmission circuits. Since it is supplied to the viewfinder of the head section, the camera head section does not need the camera head signal processing circuit and system conversion circuit, and the circuit size of the camera head section can be reduced, and the next-generation broadcasting system is supported. High-performance, high-quality image pickup device, etc. Even if the number of cases is increased, a camera head body that is about the same size as an image pickup device using an ordinary image pickup element can be used, and it is not necessary to take heat measures. A viewfinder compatible with the current broadcast system can be used even in a high-performance, high-quality image pickup device compatible with the next-generation broadcast system, which is inexpensive.

According to a fifth aspect of the present invention, in the camera head section, only the first line rearrangement circuit having a simple structure for rearranging the lines of the viewfinder signals is arranged.
Since the second line rearrangement circuit having a complicated structure for rearranging the main signals is arranged in the base station unit, a high-performance and high-quality image pickup device for the next-generation broadcasting system using the M-FIT type image pickup device, etc. In, the circuit scale of the camera head unit can be reduced.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an image pickup apparatus according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of an image pickup device according to a second embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of an image pickup device according to a third embodiment of the present invention.

FIG. 4 is a block diagram showing a configuration of an image pickup device according to a fourth embodiment of the present invention.

FIG. 5 is a block diagram showing a configuration of a conventional imaging device.

FIG. 6 is a schematic diagram illustrating the configuration of an M-FIT type image pickup device shown in the conventional image pickup apparatus.

FIG. 7 is a schematic diagram showing input / output signals of the M-FIT type image sensor shown in the conventional image pickup apparatus.

[Explanation of symbols]

 A1, B1, C1, D1 Camera head part A2, B2, C2, D2 Transmission device part A3, B3, C3, D3 Base station part 1 Image sensor 2 Pre-processing circuit 3 Viewfinder 4 First transmission circuit 5 Second Transmission circuit 6 Signal processing circuit for camera head 7 Base station signal processing circuit 8 Switching circuit 11 M-FIT type image sensor 12 Pre-processing circuit 13 Viewfinder 14 First transmission circuit 14A Transmission line 15 Second transmission circuit 15A Transmission line 16 line rearrangement circuit 17 camera head signal processing circuit 18 base station signal processing circuit 19 switching circuit 21 imaging device 22 preprocessing circuit 23 viewfinder 24 first transmission circuit 24A transmission line 25 second transmission circuit 25A transmission line 26 camera Head signal processing circuit 27 Base station Solution signal processing circuit 28 system conversion circuit 29 switching circuit 31 M-FIT type image sensor 32 preprocessing circuit 33 camera head signal processing circuit 34 first line rearrangement circuit 35 viewfinder 36 first transmission circuit 36A transmission line 37th 2 transmission circuit 37A transmission line 38 second line rearrangement circuit 39 base station signal processing circuit

Claims (5)

[Claims] 1. A camera head unit for obtaining an image pickup signal by an image pickup device or the like and displaying a viewfinder signal on a viewfinder, and processing the signal of the camera head unit and supplying it to video recording means such as a video tape recorder, A base station unit for inputting a return signal from another imaging device and the like, and a transmission device unit for transmitting a signal between the camera head unit and the base station unit are provided. Gamma, auto knee, matrix, enhancer, etc. The camera head signal processing circuit for performing the processing of 1) is provided in the base station section, and the viewfinder signal and the return signal obtained from the camera head signal processing circuit are switched and added to the base station section as a return input. From the base station section, An image pickup apparatus characterized in that the image is supplied to a viewfinder of the camera head section via a sending section. 2. An image pickup device comprising a camera head unit, a base station unit, and a transmission device unit, wherein the camera head unit converts an optical signal into an electric signal, and a signal of the image pickup device is subjected to low-pass filtering.
The base station section includes a pre-processing circuit for performing amplification processing and a view finder for displaying a view finder signal, and the base station section outputs gamma, auto knee, matrix and enhancer to the output signal of the pre-processing circuit. And the like, and outputs a main signal and a viewfinder signal, and a main signal output from the camera head signal processing circuit is supplied to video recording means such as a video tape recorder. A base station signal processing circuit for performing an encoding process for supplying the return input signal to the viewfinder through the transmission device section, and for the viewfinder output from the camera head signal processing circuit. Output from signals and other image pickup devices And a switching circuit for switching the return signal to be supplied to the return input of the base station signal processing circuit, wherein the transmission device section is provided on the camera head section side, and the base station section is provided. A second transmission circuit provided on the side and a transmission line connecting the first and second transmission circuits, wherein the first transmission circuit outputs the output signal of the preprocessing circuit to the second transmission circuit. A signal transmitted from the first transmission circuit to the viewfinder, and a process for transmitting the return signal transmitted from the second transmission circuit to the viewfinder. To a signal that can be processed by the camera head signal processing circuit, and a return signal output from the base station signal processing circuit, An image pickup apparatus, wherein processing for transmission to the first transmission circuit is performed. 3. A camera head unit, a base station unit, and a transmission device unit, wherein the camera head unit converts an optical signal into an electric signal.
The base station unit includes a FIT type image pickup device, a preprocessing circuit for performing low-pass filter processing and amplification processing on the signal of the M-FIT type image pickup device, and a viewfinder for displaying a viewfinder signal. Line rearrangement circuit for rearranging the output signal of the pre-processing circuit transmitted through the unit in the order of normal lines, and gamma, auto knee, matrix,
A signal processing circuit for a camera head that performs processing such as an enhancer and outputs a main signal and a signal for a viewfinder, and supplies the main signal output from the signal processing circuit for the camera head to video recording means such as a video tape recorder A base station signal processing circuit for performing an encoding process for supplying the return input signal to the viewfinder through the transmission device section, and the viewfinder output from the camera head signal processing circuit. And a switching circuit that switches between a return signal output from another imaging device and the like and supplies the return signal to the return input of the base station signal processing circuit, and the transmission device section is provided on the camera head section side. Installed on the side of the first transmission circuit and the base station. And a transmission line connecting the first and second transmission circuits, the first transmission circuit transmitting the output signal of the preprocessing circuit to the second transmission circuit. And a process for supplying the return signal transmitted from the second transmission circuit to the viewfinder, and the second transmission circuit transmits the signal transmitted from the first transmission circuit to the viewfinder. An image pickup apparatus, which is configured to perform a process of converting into a signal that can be processed by a line rearrangement circuit and a process of transmitting a return signal output from the base station signal processing circuit to the first transmission circuit. 4. A next-generation broadcasting system image pickup device comprising a camera head unit, a base station unit, and a transmission device unit, wherein the camera head unit converts an optical signal into an electric signal, and the next-generation broadcasting system image pickup device. The base station unit includes a pre-processing circuit that performs low-pass filter processing, amplification processing, and the like on the signal, and a view finder that displays a view finder signal. , A signal processing circuit for a camera head that outputs a main signal and a viewfinder signal by performing processing such as auto knee, matrix, and enhancer, and a video tape recorder or the like for the main signal output from the camera head signal processing circuit. Encode processing for supplying to video recording means and return input Signal from the base station signal processing circuit for performing processing for supplying the signal to the viewfinder through the transmission device section and the signal for the viewfinder output from the signal processing circuit for the camera head from the signal of the next generation broadcasting system to NTSC. A system conversion circuit for converting the signal to a current system signal and the output signal of the system conversion circuit and a return signal output from another imaging device are switched and supplied to the return input of the base station signal processing circuit. And a second transmission circuit provided on the camera head unit side, a second transmission circuit provided on the base station unit side, and the first and second transmission circuits. The first transmission circuit transmits the output signal of the preprocessing circuit to the second transmission circuit. And a process for supplying a return signal transmitted from the second transmission circuit to the viewfinder, the second transmission circuit transmitting the signal transmitted from the first transmission circuit to the viewfinder. It is characterized in that processing for converting into a signal that can be processed by the signal processing circuit for camera head and processing for transmitting the return signal output from the base station signal processing circuit to the first transmission circuit are performed. Imaging device. 5. An M- that comprises a camera head unit, a base station unit, and a transmission device unit, wherein the camera head unit converts an optical signal into an electric signal.
A FIT type image pickup device, a preprocessing circuit for subjecting the signal of the M-FIT type image pickup device to low-pass filter processing, amplification processing, etc., and gamma, auto knee,
A signal processing circuit for a camera head that outputs a main signal and a signal for a viewfinder by performing processing such as matrix and enhancer, and a viewfinder for rearranging the viewfinder signals output from the camera head signal processing circuit in a regular line order. A second line rearrangement circuit for rearranging the output signal of the camera head signal processing circuit transmitted by the base station unit through the transmission device unit in a regular line order. And an encoding process for supplying the main signal in the normal line order output from the second line rearrangement circuit to the video recording means such as a video tape recorder, and the return input signal to the transmission device section. For displaying on the viewfinder through A base station signal processing circuit for performing the above-mentioned operation, wherein the transmission device section includes a first transmission circuit provided on the camera head section side, a second transmission circuit provided on the base station section side, and the first and second transmission circuits. And a process for transmitting the main signal output from the camera head signal processing circuit to the first transmission circuit by the first transmission circuit, and the transmission line connecting the second transmission circuits. The return signal transmitted from the second transmission circuit can be processed by the viewfinder, and the second transmission circuit can process the signal transmitted from the first transmission circuit by the second line rearrangement circuit. Processing for converting into a signal and processing for transmitting the return signal output from the base station processing circuit to the first transmission circuit. And an image pickup device.