JP2008289136A - Video signal processing device, integrated circuit, and imaging apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a video signal processing device that can reduce power consumption within an analog signal processing unit, not only during an invalid frame period of a video signal but also during a blanking period within a valid frame period, thus enabling further reduction in power consumption. <P>SOLUTION: The video signal processing device that performs signal processing on an analog video signal inputted from the outside includes an analog signal processing unit 104, including a CDS/AGC unit 101 that samples the analog video signal and amplifies the sampled analog video signal; and an ADC unit 102, that converts the analog video signal outputted from the CDS/AGC unit 101 into a digital video signal, and a timing control unit 105, that controls the analog signal processing unit 104 to switch between operating mode and standby mode. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a video signal processing apparatus that performs signal processing on an analog video signal, and more particularly to video signal processing in an imaging apparatus such as a digital still camera or a video camera.

  Conventionally, in an imaging apparatus such as a digital still camera or a video camera, an analog signal processing unit in the subsequent stage is operated during an effective frame period in which a video signal is output from an image sensor, and analog signal processing is performed during an invalid frame period in which no video signal is output. There is a technique for reducing power consumption by stopping the unit (see Patent Document 1).

An analog signal processing unit 404 in the imaging apparatus of Patent Document 1 will be described with reference to FIG. The analog signal processing unit 404 includes a CDS (correlated double sampling) / AGC (analog gain control) unit 401, an ADC unit 402, and an analog clamp unit 403, and is controlled by a control signal input from the timing control unit 405. The timing control unit 405 outputs an OB clamp signal S404 and a power control signal S406 indicating an OB (Optical Black; black reference) period. When the analog video signal S401 output from the image sensor (not shown) is input to the CDS / AGC unit 401, the analog clamp unit 403 displays the OB value (black reference) of the analog video signal in the period indicated by the OB clamp signal S404. The clamp voltage S405 for controlling the level of the analog video signal in the CDS / AGC unit 401 is output to the CDS / AGC unit 401 so that the level) matches the target value. The analog video signal S402 subjected to the OB correction in this way is input to the ADC unit 402, and is output to the outside of the analog signal processing unit 404 as a digital video signal S403. The power control signal S406 output from the timing control unit 405 turns on the power of the analog signal processing unit 404 during the valid frame period and turns off during the invalid frame period. In this manner, power consumption is reduced by controlling power supply to the analog signal processing unit 404.
JP 2001-145029 A

  In the imaging apparatus of Patent Document 1, power consumption can be reduced by stopping the analog signal processing unit 404 during the invalid frame period. However, the intermittent control of the analog signal processing unit 404 is performed in units of frames, and the function stop / operation control in a period in which the analog signal processing in the effective frame is unnecessary, for example, a blanking period (vertical erasing period and horizontal erasing period). Is not sufficient in terms of low power consumption.

  Here, it may be possible to further reduce power consumption by turning off the power supply to the analog signal processing unit 404 even during the blanking period. However, in the technique of Patent Document 1, when the power to the analog signal processing unit 404 is switched from OFF to ON, a preliminary operation time is required until the analog signal processing unit 404 recovers to a potential at which it can be stably operated. . Therefore, if power supply to the analog signal processing unit 404 is stopped at the start of the blanking period, the blanking period ends before the analog signal processing unit 404 resumes normal operation, and the next effective period begins. There is a problem of end. That is, in the power saving by the power ON / OFF control as in Patent Document 1, it is difficult to reduce the power consumption in the blanking period, and there is a problem that the power consumption cannot be further reduced.

  In the present invention, the power consumption in the analog signal processing unit is reduced not only in the invalid frame period of the video signal but also in the blanking period within the valid frame period, thereby further reducing power consumption. It is an object of the present invention to provide a low power consumption video signal processing device, an imaging device, and the like.

  In the video signal processing device and the imaging device of the present invention, the function stop of the analog signal processing unit is realized by switching to the standby state instead of powering down. That is, the power consumed by the analog signal processing unit is reduced by stopping the function (operation called analog signal processing) while maintaining the power supply voltage supplied to the analog signal processing unit and the internal voltage of the analog signal processing unit. As a result, the transition of the standby state / operation state can be performed at a higher speed than the switching of the power ON / OFF, so that the analog signal processing unit does not generate a delay not only in the invalid frame period but also in the blanking period of the effective frame. It is possible to switch between the function stop / operation and further reduce power consumption.

  That is, the video signal processing apparatus according to the present invention is a video signal processing apparatus that performs signal processing on an analog video signal that is input from the outside, and is a CDS / AGC that performs sampling and amplification on the analog video signal. And an analog signal processing unit having an AD conversion unit that converts an analog video signal output from the CDS / AGC unit into a digital video signal, and switching the analog signal processing unit between operating and a standby state And a timing control unit that performs control. Thereby, when the analog signal processing is unnecessary, the power supply to the analog signal processing unit is not turned off but is set in the standby state, so that power consumption can be reduced even in a blanking period which is an extremely short time.

  Here, the analog signal processing unit further includes an analog clamp unit that outputs a clamp voltage for making the black reference level of the analog video signal constant, and the CDS / AGC unit is based on the clamp voltage. The analog video signal may be sampled and amplified, and the analog signal processing unit may further sample a value in a black reference period for the digital video signal output from the AD conversion unit. A black reference correction unit for obtaining a digital black reference correction value for making the black reference level constant, and the analog signal processing unit further calculates the digital black reference correction value obtained by the black reference correction unit. A DA converter for converting to an analog black reference correction value, and the analog clamp unit is a digital output from the DA converter. Based on the black reference correction value may be configured to output the clamp voltage. This is because even when components of the analog signal processing unit are added, it is possible to reduce power consumption in the standby state.

  More specifically, the analog signal processing unit stops the analog signal processing while holding the internal signal in the standby state. For this purpose, for example, the analog signal processing unit holds the internal signal in the standby state, the power supply voltage supplied to the analog signal processing unit, the clamp voltage output from the analog clamp unit, the AD conversion unit At least one of a reference voltage generated inside and a reference voltage generated inside the DA converter is held. Alternatively, in the standby state, the analog signal processing unit cuts off the clock supply without cutting off the power supply to the CDS / AGC unit, the AD conversion unit, the analog clamp unit, and the DA conversion unit.

  Accordingly, the timing control unit can perform the control so that the analog signal processing unit is in a standby state a plurality of times in one frame period of the analog video signal. In addition, the timing control unit performs the control so that the analog signal processing unit is in a standby state during an invalid frame period of the analog video signal and a blanking period in the effective frame period of the analog video signal. You can also.

  The present invention can be realized not only as the video signal processing apparatus as described above, but also as a semiconductor integrated circuit such as an LSI or the like equipped with the video signal processing apparatus having the above configuration, the lens, and the lens. As an imaging device such as a digital camera comprising: an image sensor that converts light transmitted through the image sensor into an analog video signal; and a video signal processor as described above that performs signal processing on the analog video signal output from the image sensor It can also be realized.

  Not only the operation / stop of the analog signal processing unit in units of frames, but also a video that realizes even lower power consumption by stopping the analog signal processing unit during a period shorter than one frame, for example, a blanking period of an effective frame. A signal processing device can be provided. Further, it is possible to provide a low power consumption LSI and an imaging apparatus equipped with such a video signal processing apparatus.

  In particular, in the present day when battery-driven portable devices equipped with an imaging device have become widespread, the present invention can further reduce the power consumption of portable devices, and its practical value is extremely high.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
First, the video signal processing apparatus according to the first embodiment of the present invention will be described.

  FIG. 1 is a diagram showing a configuration of a video signal processing apparatus according to the present embodiment. This video signal device is a semiconductor integrated circuit such as an LSI that performs signal processing such as noise removal, amplification, and A / D conversion on an analog video signal input from the outside (imaging device). And a timing control unit 405.

  The analog signal processing unit 104 is a circuit that performs various kinds of signal processing on an analog video signal S101 output from an image sensor represented by a CCD or MOS sensor and outputs a digital video signal S103. The CDS / AGC unit 101 ADC section 102 and analog clamp section 103 are provided.

  The CDS / AGC unit 101 includes two circuits for sampling and amplifying the analog video signal S101, that is, CDS and AGC. The CDS is a correlated double sampling circuit that suppresses the influence of reset noise by sampling the difference between the reset level of the image sensor indicated by the input analog video signal S101 and the pixel level. The AGC is an analog gain control circuit that functions as a variable gain amplifier that amplifies the output signal from the CDS according to the magnitude thereof.

  The timing control unit 105 receives an OB clamp signal S104 indicating an OB period and a standby signal S106 that is a control signal for switching between operating the analog signal processing unit 104 or setting the standby state (that is, indicating a standby period). And outputs each signal to the analog signal processing unit 104. Note that the standby period is a period in which analog signal processing is not required. In this embodiment, an invalid frame period, which is a frame period in which no analog video signal is output from the image sensor, and an analog video signal is output from the image sensor. It is a blanking period in an effective frame period which is a frame period. The invalid frame period is a frame period that occurs when frames are thinned at regular intervals to generate a video signal with a low frame rate, intermittent shooting is performed, or shooting is performed only when instructed by the user. It is. As shown in FIG. 2, the blanking period includes a vertical blanking period and a horizontal blanking period. Further, as shown in FIG. 2, the OB period is a period in which a black reference signal is output from the image sensor, and includes a vertical OB period and a horizontal OB period.

  The analog clamp unit 103 is a circuit that outputs a clamp voltage for making the black reference level of the analog video signal S102 output from the CDS / AGC unit 101 constant, specifically, a period indicated by the OB clamp signal S104. The clamp voltage S105 for controlling the level of the analog video signal in the CDS / AGC unit 101 is output to the CDS / AGC unit 101 so that the OB value at 1 matches the target value. As a result, the analog video signal S102 subjected to the OB correction is input to the ADC unit 102.

  The ADC unit 102 converts the input analog video signal S102 into a digital video signal S103, and outputs it to the outside of the analog signal processing unit 104.

  In the video signal processing apparatus having the above configuration, the function stop of the analog signal processing unit 104 is realized as follows. The standby signal S106 is the timing at which an invalid period in which the analog video signal S101 is not output from the image sensor, that is, a period in which analog signal processing is unnecessary (in this embodiment, an invalid frame period and a blanking period in the valid frame period) starts. Is output from the timing control unit 105 to the analog signal processing unit 104. In response to the standby signal S106, each block of the analog signal processing unit 104, the CDS / AGC unit 101, the ADC unit 102, and the analog clamp unit 103 immediately stop their functions (operation called analog signal processing) and switch to the standby state. .

  The standby state in this embodiment means that the analog signal processing unit 104 stops the analog signal processing while holding the internal signal. Here, the analog signal processing unit 104 generates the power supply voltage supplied to the analog signal processing unit 104, the clamp voltage output from the analog clamp unit 103, and the ADC unit 102 as holding of the internal signal in the standby state. Hold at least one of the reference voltages. In the present embodiment, the analog signal processing unit 104 holds the power supply voltage to the analog signal processing unit 104, the reference voltage generated from the power supply voltage, and the clamp voltage S105.

  FIG. 3 is a diagram illustrating an example of a method for realizing the standby state. Here, it is shown that the analog signal processing unit 104 cuts off the clock supply without cutting off the power supply to each of the blocks 101 to 103 in the standby state. In other words, the analog signal processing unit 104 does not cut off the supply of the power supply voltage VDD from the power supply 120 to each of the blocks 101 to 103 during the period in which the standby signal S106 indicates the standby period. By disconnecting the switch 122 such as a gate circuit connected to the gates 103 to 103, the supply of the clock signal to each of the blocks 101 to 103 is cut off.

  FIG. 4 is a diagram illustrating another example of a method for realizing the standby state. Here, it is shown that the AGC of the CDS / AGC unit 101 stops functioning (here, amplification) in the standby state. That is, the AGC of the CDS / AGC unit 101 has a differential amplifier circuit including load resistors 130a and 130b, a pair of MOS transistors 131a and 131b whose sources are coupled, a constant current source 132, and a switch 133. The switch 133 is a MOS transistor or the like, and is turned off during a period when the standby signal S106 indicates a standby period. In this way, the CDS / AGC unit 101 stops its operation without interrupting the power supply to the internal circuit.

  Thereafter, immediately before the invalid period ends, the standby signal S106 is canceled, and the analog signal processing unit 104 immediately switches from the standby state to the operating state. Since the switching between the standby state and the operation state is performed at high speed, the operation of the analog signal processing unit 104 can be resumed without delay at the timing when the video signal is switched to the valid period. When blanking occurs intermittently multiple times in the effective frame, the standby state / operating state is switched each time.

  FIG. 5A is a timing chart showing the standby operation of the video signal processing apparatus according to this embodiment, and FIG. 5B is a timing chart showing the standby operation of the conventional apparatus.

  As shown in FIG. 5A, the standby signal S106 output from the timing control unit 105 becomes Low during the invalid frame period and the blanking period of the effective frame period as the standby period. The analog signal processing unit 104 holds the power supply voltage to the analog signal processing unit 104, the reference voltage generated from the power supply voltage, and the clamp voltage S105 regardless of the state of the standby signal (High / Low). Only when it is Low, the operation of each block 101 to 103 (analog signal processing) is stopped by cutting the clock signal supplied to each block 101 to 103 or cutting the constant current source in the amplifier circuit. .

  On the other hand, according to the conventional apparatus, as shown in FIG. 5B, the standby signal becomes Low only during the invalid frame period as the standby period, and power supply to the analog signal processing unit is performed only during that period. Stopped.

  As described above, according to the video signal processing apparatus in the present embodiment, the analog signal processing unit 104 can be stopped during the blanking period of not only the invalid frame but also the valid frame, thereby further reducing power consumption. .

  In the present embodiment, the analog signal processing unit 104 includes the analog clamp unit 103, but the analog signal processing unit according to the present invention does not necessarily include the analog clamp unit. This is because, regardless of the presence or absence of the analog clamp unit 103, low power consumption can be achieved by setting the analog signal processing unit in the standby state not only during the invalid frame period but also during the blanking period of the effective frame period. .

(Second Embodiment)
Next, a video signal processing apparatus according to the second embodiment of the present invention will be described.

  FIG. 6 is a diagram illustrating the configuration of the video signal processing apparatus according to the present embodiment. This video signal device is a semiconductor integrated circuit such as an LSI that performs signal processing such as noise removal, amplification, and A / D conversion on an analog video signal input from the outside (imaging device). And a timing control unit 205 and an OB correction unit 206. Also in the video signal processing apparatus according to the present embodiment configured as shown in FIG. 6, it is possible to reduce the power consumption as in the first embodiment.

  The analog signal processing unit 204 is a circuit that performs various kinds of signal processing on the analog video signal S201 output from an image sensor represented by a CCD or a MOS sensor and outputs a digital video signal S203, and the CDS / AGC unit 201. ADC section 202, analog clamp section 203, and DAC section 207.

  The CDS / AGC unit 201 has the same function as the CDS / AGC unit 101 in the first embodiment, and after performing correlated double sampling on the analog video signal S201, the amplified signal is analogized. The video signal S202 is output.

  The ADC unit 202 has the same function as the ADC unit 102 in the first embodiment, converts the analog video signal S202 output from the CDS / AGC unit 201 into a digital signal, and converts the analog video signal S202 into a digital video signal S203 as an OB correction unit. It outputs to 206.

  As in the first embodiment, the timing control unit 205 generates an OB clamp signal S204 indicating an OB period and a standby signal S206 indicating a standby period. In this embodiment, the timing control unit 205 generates an OB clamp signal S204 as an OB. The standby signal S206 is output to the correction unit 206 to the analog signal processing unit 204.

  When the digital video signal S203 from the ADC unit 202 is input, the OB correction unit 206 performs OB correction so that the video signal in the period indicated by the OB clamp signal S204 matches the OB value indicated by the OB level target value S210 given in advance. A value is calculated, and the calculated OB correction value is output as a digital OB correction value S208.

  The DAC unit 207 is a D / A converter, converts the digital OB correction value S208 output from the OB correction unit 206 into an analog OB correction value S209, and feeds it back to the analog clamp unit 203.

  The analog clamp unit 203 basically has the same function as the analog clamp unit 103 in the first embodiment. However, in this embodiment, the analog clamp unit 203 is based on the analog OB correction value S209 output from the DAC unit 207. The CDS / AGC unit 201 controls the level of the analog video signal so that the OB value in the period indicated by the OB clamp signal S204 matches the target value.

  The analog video signal S202 output from the CDS / AGC unit 201 is converted into a digital video signal S203 by the ADC unit 202 and output. The digital video signal S203 output from the ADC unit 202 is output as a corrected digital video signal S207 via the OB correction unit 206.

  In the above-described configuration, analog adjustment by the analog clamp unit 203 and digital OB level fine adjustment by the OB correction unit 206 are possible with respect to the OB level, so that OB level control with higher accuracy is possible.

  In the video signal processing apparatus having the above configuration, the function stop of the analog signal processing unit 204 is executed as follows. The standby signal S206 is the timing at which an invalid period in which the analog video signal S201 is not output from the image sensor, that is, a period in which analog signal processing is unnecessary (in this embodiment, an invalid frame period and a blanking period in the valid frame period) starts. Is output from the timing control unit 205 to the analog signal processing unit 204. In response to the standby signal S206, each block of the analog signal processing unit 204, the CDS / AGC unit 201, the ADC unit 202, the analog clamp unit 203, and the DAC unit 207 immediately stop the function (operation called analog signal processing) Switch to standby mode.

  The standby state in the present embodiment is that the analog signal processing unit 204 stops the analog signal processing while holding the internal signal, as in the first embodiment. Here, the analog signal processing unit 204 generates the power supply voltage supplied to the analog signal processing unit 204, the clamp voltage output from the analog clamp unit 203, and the ADC unit 202 as holding of the internal signal in the standby state. At least one of the reference voltage and the reference voltage generated inside the DAC unit 207 is held. In the present embodiment, the analog signal processing unit 204 holds the power supply voltage to the analog signal processing unit 204, the reference voltage generated from the power supply voltage, and the clamp voltage S205. A specific method for realizing the standby state is the same as that in the first embodiment.

  Thereafter, immediately before the invalid period ends, the standby signal S206 is canceled, and the analog signal processing unit 204 immediately switches from the standby state to the operating state. Since the switching between the standby state and the operation state is performed at high speed, the operation of the analog signal processing unit 204 can be resumed without delay at the timing when the video signal is switched to the valid period. When blanking occurs intermittently multiple times in the effective frame, the standby state / operating state is switched each time.

  As described above, according to the video signal processing apparatus in the present embodiment, the analog signal processing unit 204 can be stopped during the blanking period of not only the invalid frame but also the valid frame, thereby further reducing power consumption. Become.

  The above-described embodiment is merely an example of the present invention, and the present invention is not limited to the first and second embodiments. Forms obtained by making various modifications to the above embodiment and forms realized by arbitrarily combining the components in the above embodiment are also included in the present invention.

  For example, a means for enabling setting of an OB clamp signal and an OB level target value for each operation mode and type of the image sensor may be provided. The means for setting the analog signal processing unit to the standby state may be realized in any way.

  As described above, according to the present invention, in the standby state, the internal voltage of the analog signal processing unit is held, and the standby frame / operation state is switched at high speed. During the blanking period, the function of the analog signal processing unit can be stopped, and power consumption can be reduced as compared with the conventional case.

  The present invention can be realized not only as a video signal processing apparatus as in the above-described embodiment but also as an imaging apparatus such as a digital camera. FIG. 7 shows a configuration of an imaging apparatus 300 that mounts the video signal processing apparatus according to the first embodiment and realizes low power consumption. The imaging device 300 includes a lens 301, an imaging element 302, a memory 303, a digital signal processing unit 304, and a display device 305 in addition to the video signal processing device in the first embodiment.

  The lens 301 is an optical element that collects light. The imaging element 302 is a CCD, C-MOS sensor, or the like that converts light transmitted through the lens 301 into an analog video signal. The memory 303 is a DRAM or the like that stores images. The display device 305 is an LCD (liquid crystal display device) or the like that displays an image. The digital signal processing unit 304 generates image data by performing signal processing such as color adjustment and compression on the digital video signal S103 output from the analog signal processing unit 104, and stores the image data in the memory 303 or a display device It has a DSP (digital signal processor) 304a that outputs to 305, and a CPU 304b that controls each component.

  Such an imaging apparatus 300 can stop the function of the analog signal processing unit 104 not only during the invalid frame but also during the blanking period of the effective frame, and consumes less power than the conventional one.

  Note that the video signal processing device mounted on the imaging device is not limited to the video signal processing device in the first embodiment, and may be a video signal processing device in the second embodiment or a modification thereof. Needless to say, it is good.

  The present invention relates to a video signal processing device that performs signal processing on an analog video signal and an imaging device that includes the video signal processing device, such as a digital still camera, a video camera, a television, a medical camera, etc. Useful for. In particular, it is effective in reducing power consumption in an apparatus having a long video signal invalid period such as a medical capsule camera that performs intermittent imaging.

The figure which shows the structure of the video signal processing apparatus in 1st Embodiment. Diagram explaining blanking period and OB period A diagram showing an example of a method for realizing the standby state The figure which shows another example of the implementation | achievement method of a standby state (A) is a timing chart showing the standby operation of the video signal processing apparatus in the first embodiment, (b) is a timing chart showing the standby operation of the conventional apparatus. The figure which shows the structure of the video signal processing apparatus in 2nd Embodiment. The figure which shows the structure of the imaging device in 2nd Embodiment The figure which shows the structure of the analog signal processing part of a prior art

Explanation of symbols

101, 201, 401 CDS / AGC unit 102, 202, 402 ADC unit 103, 203, 403 Analog clamp unit 104, 204, 404 Analog signal processing unit 105, 205, 405 Timing control unit 120 Power supply 121 Clock oscillation unit 122, 133 Switch 130a, 130b Load resistance 131a, 131b MOS transistor 132 Constant current source 206 OB correction unit 207 DAC unit 300 Imaging device 301 Lens 302 Imaging element 303 Memory 304 Digital signal processing unit 304a DSP
304b CPU
305 Display device S101, S201, S401 Analog video signal S102, S202, S402 Analog video signal (CDS / AGC voltage)
S103, S207, S403 Digital video signal S104, S204, S404 OB clamp signal S105, S205, S405 Clamp voltage S106, S206 Standby signal S203 Digital video signal S208 Digital OB correction value S209 Analog OB correction value S210 OB level target value S406 Power control signal

Claims (10)

A video signal processing apparatus that performs signal processing on an analog video signal input from the outside,
An analog signal processing unit having a CDS / AGC unit that samples and amplifies the analog video signal; and an AD conversion unit that converts the analog video signal output from the CDS / AGC unit into a digital video signal;
A video signal processing apparatus comprising: a timing control unit that performs control to switch between operating the analog signal processing unit or setting the analog signal processing unit to a standby state. The analog signal processing unit further includes an analog clamp unit that outputs a clamp voltage for making the black reference level of the analog video signal constant.
The video signal processing apparatus according to claim 1, wherein the CDS / AGC unit performs sampling and amplification on the analog video signal based on the clamp voltage. The video signal processing apparatus further obtains a digital black reference correction value for making the black reference level constant by sampling a value in a black reference period for the digital video signal output from the AD converter. Equipped with a black reference correction unit
The analog signal processing unit further includes a DA conversion unit that converts the digital black reference correction value obtained by the black reference correction unit into an analog black reference correction value,
The video signal processing apparatus according to claim 2, wherein the analog clamp unit outputs the clamp voltage based on a digital black reference correction value output from the DA conversion unit. The video signal processing apparatus according to claim 3, wherein the analog signal processing unit stops the analog signal processing while holding the internal signal in the standby state. The analog signal processing unit generates a power supply voltage supplied to the analog signal processing unit, a clamp voltage output from the analog clamp unit, and a reference generated inside the AD conversion unit as holding of an internal signal in the standby state. The video signal processing apparatus according to claim 4, wherein at least one of a voltage and a reference voltage generated inside the DA converter is held. In the standby state, the analog signal processing unit cuts off the clock supply without cutting off the power supply to the CDS / AGC unit, the AD conversion unit, the analog clamp unit, and the DA conversion unit. The video signal processing apparatus according to claim 4. The video signal processing apparatus according to claim 1, wherein the timing control unit performs the control such that the analog signal processing unit is in a standby state a plurality of times in one frame period of the analog video signal. The timing control unit performs the control so that the analog signal processing unit is in a standby state in an invalid frame period of the analog video signal and a blanking period in the effective frame period of the analog video signal. 2. The video signal processing apparatus according to claim 1, wherein   A semiconductor integrated circuit on which the video signal processing apparatus according to claim 1 is mounted. A lens,
An image sensor that converts light transmitted through the lens into an analog video signal;
An image pickup apparatus comprising: the image signal processing apparatus according to claim 1, wherein signal processing is performed on an analog image signal output from the image pickup element.

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