JP2009284199A - Television camera - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a television camera provided with a recorder which creates data related to flash and records them with video signals to record video signals that are easily editable at a studio when recording video signals into recording media, such as flash memory or hard disk. <P>SOLUTION: The television camera has a video system DSP12 which processes video signals from a solid-state image sensor 11, a flash determination circuit 13 which detects whether output signals of the video system DSP12 include flash video of a still-image camera, and generates a trigger signal indicating that there is flash and outputs data related to the flash if the flash video is included, a CPU 14 which creates data related to the flash of the output video data of the video system DSP12 based on the trigger signal from the flash determination circuit 13, and records and controls them with the output video data, and a recording medium 15 which records the output from the CPU 14. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a television camera to which a recording medium such as a hard disk for recording an imaging signal is mounted. Specifically, when a flash video from a still image camera is included in a subject video when shooting with the television camera, the imaging signal relates to a flash. The present invention relates to a television camera that records data on a recording medium.

  In the production of TV broadcast news programs, a recording medium with video recorded by a TV camera is brought into the editorial department, and editing of the video data recorded on the recording medium is shortened in order to quickly report the occurrence of the incident. It must be done reliably on time. In a television broadcast news program, you may watch a video that uses a still camera. In many cases, the video where the flash is cooked is the core of the report. For example, an image of a cameraman's still image camera with a flash can be used to confirm the face of the suspect in the incident on the vehicle. It is done. Such a video with a flash is a part where the core part of the news or incident was filmed, and it is also a scene often used for newspaper reports.

  In a news program, a video taken by a television camera during an incident or the like is recorded on a recording medium, and the video data of the recording medium is used for editing and broadcasting. The video data to be broadcast is recorded on a recording medium. In incidents and the like, flash video often enters broadcast video signals. Therefore, in editing work, it is possible to discriminate the video of the core part of the incident from the flash video.

  There is a video generation device that can perform editing work from a flash video. As shown in FIG. 9, a conventional video generation apparatus for selecting a core part from a flash video has a television camera 1 for photographing a surrounding situation in which only the flash video can be extracted, and a broadcast television camera for photographing a subject. 3, the video captured by the former television camera 1 is analyzed by the flash amount analysis unit 2, is determined to be a flash video, a trigger is generated, and the core is captured by the broadcast television camera 3 at the trigger generation timing. There is a technique for generating a partial video by the representative still video generation unit 4, which is effective for broadcast broadcasting of sports competitions such as sumo competition and soccer (for example, see Patent Document 1).

JP 2002-238010 A

  Usually, before broadcasting a news program, you can play back the video taken by the news cameraman from the recording medium and check the whole video data to see which part is the flash video of the core part of the incident. Therefore, it takes time to determine the image of the core part, and it is not easy to search within a limited time. The above-mentioned video generation device analyzes the flash video based on the frequency of the flash and searches for the core part. In sports broadcasts such as sumo, there are scenes where the flash is cooked all at once. Then, the brightness of the white part due to the flash becomes high, and can be easily determined by the flash amount analysis unit of the video generation device. For example, in addition to a television camera for sports broadcasting, a television camera that captures the surrounding situation is prepared, and by shooting the audience seats with the latter television camera, it is possible to shoot images where the flash is cooked in various places. You can pick up and edit important scenes from this video. However, at press conferences and incidents, flashes are often produced sparsely and not so often. In the conventional video generation device, a portion where the brightness of the white portion due to the flash is noticeable is analyzed by the flash amount analysis unit, and it may be difficult if the flash is single shot or sparsely cooked. That is, the flash is instantaneous, and when the flash video is recorded in one frame or the like, it may be difficult for the flash amount analysis unit to search for the flash video for a very short time. It was difficult to analyze with a quantity analysis unit.

  The present invention has been made in view of the above problems. When recording a video signal on a recording medium such as a flash memory or a hard disk, data relating to the flash is created and recorded together with the video signal. An object of the present invention is to provide a television camera having a recording medium that can facilitate the editing operation.

The present invention achieves the above-mentioned problems, and the invention of claim 1 is a video signal processing means for processing a video signal from a solid-state imaging device and outputting video data;
Detects whether or not the video data output by the video signal processing means includes a flash video from a still image camera, and if the flash video is included, outputs a trigger signal indicating that the video data is flashed Flash discrimination means to
Recording control means for creating flash information of the video data and outputting together with the video data by the trigger signal from the flash discrimination means;
And a recording medium for recording an output from the recording control means.

  According to a second aspect of the present invention, in the television camera according to the first aspect, the flash information includes a presence / absence of a flash, the number of flashes in a clip, and a frame value with a flash.

  According to a third aspect of the present invention, the recording control unit acquires the frame value based on a delay time based on a processing time of the flash discriminating unit when acquiring the frame value given in order of each frame of the video data. The television camera according to claim 1.

According to a fourth aspect of the present invention, the flash discrimination means calculates a representative value for one frame;
Holding means for holding the representative value for at least one frame;
The television camera according to claim 1, further comprising a comparison unit that compares a difference value between the calculated representative value and the representative value held by the holding unit with a predetermined value.

  The invention of claim 5 is the television camera according to claim 4, wherein the representative value of the one frame is an average value of all pixels of one frame.

The invention of claim 6 is characterized in that the representative value of the one frame is an adder that adds the pixel of the input frame and the calculated value of the pixel immediately before the pixel of the input frame;
5. The television camera according to claim 4, wherein the television camera is calculated by an arithmetic means comprising a shift arithmetic unit that halves the output of the adder.

According to the first aspect of the present invention, video signal processing means for processing a video signal from the solid-state imaging device and outputting video data (digital video signal after the video DSP);
Detects whether or not the video data output by the video signal processing means includes a flash video from a still image camera, and if the flash video is included, outputs a trigger signal indicating that the video data is flashed Flash discrimination means to
Recording control means (CPU) for creating flash information of the video data and outputting together with the video data by the trigger signal from the flash discrimination means;
Since the television camera is characterized by comprising a recording medium for recording the output from the recording control means, the flash information is recorded on the recording medium in addition to the video data. There is an advantage that video data including flash (flash video) can be easily searched from the flash information, the video of the core part can be easily searched, and editing work can be processed efficiently.

  According to a second aspect of the present invention, the flash information is made up of presence / absence of flash, the number of flashes in a clip (video data between designated frames), and a frame value with flash. Therefore, the video of the core part can be easily retrieved from the number of flashes of the flash information and the frame value with flash, and the broadcast video signal can be easily edited. Also, by recording the number of flashes of the image data in the clip of the frame and the frame value with flash, the frame values (numbers) are given in order from the start to the end of shooting. There is an advantage that the cueing of the video of the part becomes easy and the editing work becomes easy.

According to a third aspect of the invention, the recording control means obtains the frame value based on a delay time due to a processing time of the flash discriminating means when obtaining the frame value given in the order of each frame of the video data. The television camera according to claim 1, wherein accurate editing data can be created and stored without erroneously acquiring the frame value of video data including a flash. There is an advantage that the determination with the flash can be made reliably. Note that a processing time is required until the video signal from the video signal processing means is input to the flash discrimination means and the trigger signal is output from the flash discrimination means, and the processing time is a delay time.
Alternatively, the frame number is recorded by the video signal output from the video signal processing means being input to the recording control means (CPU) and automatically assigned with the frame number in the order of the frame. It is input to the means (CPU). The delay time is a processing time from when a video signal of a frame to be determined as to whether flash is present or not is input to the recording control unit until a trigger signal is input from the flash determination unit.

  In the invention of claim 4, the flash discriminating means includes a representative value calculating means for calculating a representative value of one frame, a holding means for holding the representative value for at least one frame, the calculated representative value, and the 2. The television camera according to claim 1, further comprising a comparison unit that compares a difference value with the representative value held by the holding unit with a predetermined value. It can be determined relatively easily by the difference value between the frames, and by holding only one frame, the presence or absence of flash can be easily determined by the representative value between adjacent frames. In addition, even when there is a flash, it is possible to determine the presence or absence of flash by holding at least one frame of information by the holding means, and it is also possible to compare across multiple frames. Can be accurately determined.

  Further, in the invention of claim 5, since the representative value of the one frame is an addition average value of all pixels of one frame, the television camera according to claim 4 can be used. Since the video level with the flash is higher than the video level without the frame, as a result, the level of the addition average value is also increased.

  According to a sixth aspect of the invention, the representative value of the one frame is an adder that adds the pixel of the input frame and the operation value of the pixel immediately before the pixel of the input frame, and the output of the adder 5. The television camera according to claim 4, wherein the calculation is made by an arithmetic means comprising a shift arithmetic unit that halves, so that a representative value of one frame is calculated by an adder and a shift arithmetic unit. As a result, the processing time can be shortened compared to obtaining the average value of all the pixels of the frame, and the number of parts used for the calculation can be reduced. Thus, there is an advantage that the entire structure can be made compact. The camera also has the advantage that it can be implemented with few additional parts.

  The best mode for carrying out the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a television camera according to an embodiment of the present invention. FIG. 2 is an explanatory diagram of flash discrimination by two frames in the present embodiment. FIG. 3 is an explanatory diagram of flash discrimination by three frames in the present embodiment. FIG. 4 is an explanatory diagram of flash discrimination by three frames different from FIG. FIG. 5 is a configuration diagram of the flash discrimination circuit in the present embodiment. FIG. 6 is a configuration diagram of a one-frame representative value calculation circuit in the present embodiment. FIG. 7 is a diagram showing a configuration example of flash information recorded on the recording medium in the present embodiment. FIG. 8 is a diagram showing a configuration example of editing data.

  As shown in FIG. 1, this embodiment includes a solid-state imaging device 11, a video system DSP (Digital Signal Processor) 12, a flash discrimination circuit 13, a CPU 14, and a recording medium 15. First, the operation of each unit will be described. The solid-state image sensor 11 is, for example, a CCD (Charge Coupled Device). The video DSP 12 performs general processing such as knee or gamma processing on the image signal obtained from the solid-state imaging device 11 for image correction such as knee camera and gamma processing, and outputs a digital video signal as a CPU (Central Processing Unit). ) 14 and the flash discriminating circuit 13. The flash discriminating circuit 13 determines whether or not a flash is included in the video signal obtained by the video DSP 12, and if it is included, a flash trigger signal (flash confirmation trigger) is sent to the CPU 14 as having flash. Output. The CPU 14 converts the video data into a recording format and records it on the recording medium 15, reads it as data from the recording medium 15, or creates flash data and records it as editing data on the recording medium 15. The recording medium 15 is a flash memory or a hard disk.

  Further, since the flash trigger has a processing time because it is processed by the flash discriminating circuit, there is a time difference between the time when the flash trigger occurs and the input video data. When the CPU 14 processes the frame value (or frame position information). I can't match. Therefore, the input video data is delayed in accordance with this processing time to give a frame number, or the delay time due to this time difference is roughly the processing time of the flash discrimination, and the frame number assigned by the CPU 14 in the order of the video frames is The delay time is taken into consideration, and the control is performed to match the frame values to eliminate the time difference. The frame value is frame position information, and frame numbers are given sequentially in order of consecutive video frames from the start to the end of shooting.

  Next, the discrimination process by the flash discrimination circuit 13 will be described with reference to FIG. The figure shows two consecutive frames, where N frame is video data not including a flash and N + 1 frame is video data including a flash video F. The flash discriminating circuit 13 discriminates the presence or absence of the flash from the two frames according to the following procedure. First, in the procedure (1), a representative value of N + 1 frames is obtained. This representative value is, for example, an average value of all pixels. Subsequently, in the procedure of (2), a difference value is obtained by calculation processing of the representative value of the N frame obtained in advance and the representative value of the N + 1 frame. The representative value of N frames is an average value of N frames, and is temporarily stored in a buffer memory or the like. Next, in the procedure (3), it is determined whether or not the difference value obtained in the procedure (2) is larger than a predetermined value. If the difference value is larger than the predetermined value, it is determined that the video data has changed. Outputs a flash trigger signal. The flash trigger signal can determine that N + 1 frame is flashed. In addition, instead of the addition average value of all the pixels of the frame, the addition average value may be calculated by averaging the pixels in the predetermined image area (block) in which the flash video F of the predetermined frame may exist. When processing is performed in such a block, the delay time required for the comparison processing when determining the presence or absence of flash can be shortened, and the editing operation can be performed quickly.

  The flash discriminating circuit 13 includes representative value calculating means for calculating a representative value (addition average value of all pixels) of each frame, representative value storing means for sequentially storing representative values obtained by the representative value calculating means, and N + 1 frames. Difference processing means for calculating a difference value between the representative value of the N frame which is the previous frame and the representative value of the N + 1 frame from the representative value storage means, and the difference processing means Comparing and determining means for comparing the difference value with a predetermined value to determine whether or not the difference value is larger than the predetermined value. The procedure (1) is processed by the representative value calculation means, the procedure (2) is processed by the difference processing means, and the procedure (3) is processed by the comparison determination means. If it is determined that the difference value is larger than the predetermined value, the comparison determination means outputs a flash trigger signal to determine that the N + 1 frame is flashed. The flash discriminating circuit 13 is provided with a control unit that sequentially operates each unit based on the horizontal / vertical synchronization signal to perform flash discrimination processing and output a flash trigger signal. When the flash discriminating circuit 13 outputs a flash trigger signal, it is determined that there is a flash video F in the frame, and it is determined that there is a flash. If the flash trigger signal is not output at a predetermined timing, it is determined that there is no flash. The determination of the presence / absence of the flash is performed by the flash discrimination circuit 13, while the encoding of the presence / absence of the flash is performed by the CPU 14 based on the flash trigger signal.

  Next, another discrimination process by the frame discrimination circuit 13 will be described with reference to FIG. The figure shows determination of flash presence / absence by three consecutive frames, N frame is video data not including flash, and N + 1 frame and N + 2 frame are video data including flash video F. Frame discrimination by three frames is performed according to the following procedure. A representative value of each frame of the video data is obtained at a predetermined timing. This representative value is, for example, an average value of all pixels. First, the presence / absence of flash is determined by the procedure of (1), and a representative value of N + 1 frames is obtained and held. Subsequently, a difference value is obtained by a difference process between the representative value of N frame and the representative value of N + 1 frame held in advance in the procedure of (2). Data temporarily stored in a buffer memory or a register is used as a representative value of N frames (for example, an average value of all pixels). Next, in the procedure (3), whether or not the difference value obtained in the procedure (2) is larger than a predetermined value is determined by a comparison process between the difference value and the predetermined value, and the difference value is larger than the predetermined value. Then, it is determined that there is a change in the video data, and a flash trigger signal is output so that the N + 1 frame can be determined as having flash. Subsequently, the representative value of the N + 2 frame is obtained by the procedure of (4), and the representative value of the N + 2 frame obtained by the procedure of (4) and the N + 1 frame obtained by the procedure of (3) are obtained in the procedure of (5). Difference processing with the representative value of is performed. In the procedure of (6), if the difference value between the N + 1 and N + 2 frames obtained in the procedure of (5) is smaller than a predetermined value, it is determined that there is no change and the N + 2 frame is flushed. Then, a flash trigger signal is output.

  As another procedure of the above (6), a difference process between the stored representative value of the N frame and the representative value of N + 2 is performed, and it is determined whether or not the difference value is larger than a predetermined value. When it is determined that the value is larger than the predetermined value, a flash trigger signal is output to determine that there is a change and the N + 2 frame is flashed.

  Further, in the flash discrimination method using three frames, as shown in FIG. 4, it is assumed that N frames and N + 2 frames are video data not including a flash, and N + 1 frames are video data including a flash video F. Even in such a case, the flash discriminating circuit 13 can determine the presence or absence of the flash in the following procedure.

  First, in the procedure (1), the representative value calculation means obtains the representative value of the N + 1 frame, and in the procedure (2), the difference processing means obtains the difference value between the representative value of the N frame and the representative value of the N + 1 frame. Subsequently, the procedure proceeds to the procedure (3), and the flash discriminating unit determines whether or not the difference value obtained in the procedure (2) is larger than a predetermined value. The flash discriminating means outputs a flash trigger signal. That is, it can be determined that there is a change in the frame between adjacent neighbors and that the N + 1 frame is flashed. Subsequently, the procedure proceeds to the procedure of (4), the representative value of the N + 2 frame is obtained by the representative value calculation means, and the procedure proceeds to the procedure of (5), where the difference value between the representative value of the N + 1 frame and the representative value of the N + 2 frame is subjected to difference processing. The procedure proceeds to step (6). The procedure of (6) is processing by the flash discriminating means. When it is determined that the difference value obtained in the procedure of (5) is larger than a predetermined value, the flash trigger signal (there is a change between frames and there is no flash). Is not output. In this case, it can be determined that the N + 2 frame has no flash. Further, as another determination means, a difference value between the N frame and the N + 2 frame is obtained, and when the difference value is smaller than a predetermined value, it can be determined that there is no change between the frames, and the N + 2 frame is determined to have no flash. can do.

  In the present embodiment, the video signal of the first frame is reference data for determining whether or not the flash is present, and when the TV camera is turned on, the first frame is captured by photographing a scene without flash. The video data may be used as reference data with no flash. In addition, a video signal corresponding to a subject image without flash is stored as reference data in a storage device built in the TV camera in advance, and the reference data is read from the storage device as a video signal at the start of shooting and is forcibly stored on a recording medium. It may be stored as frame number 1. Furthermore, when the power is turned on, a one-frame pseudo video signal corresponding to a subject video without flash may be forcibly output from the flash discrimination circuit 13 to the CPU 14.

  An example of the flash discrimination circuit 13 of this embodiment will be described in more detail with reference to FIG. The flash discriminating circuit 13 in the figure includes a frame representative value calculator 51, a register 52, a subtractor 53, and a comparator 54, and is provided with control means for controlling these. The control means operates the frame representative value calculator 51, the register 52, the subtractor 53, and the comparator 54 in accordance with the horizontal / vertical synchronization signal at the timing of each frame so that the representative value of each frame is sequentially calculated and flashed. The presence or absence is determined. The frame representative value calculator 51 calculates a pixel representative value for each frame. As a representative value, for example, all pixels are set as an average value. The register 52 holds the representative value calculated by the frame representative value calculator 51. This register 52 holds a representative value of one frame. The subtractor 53 performs a calculation process of the difference value between the representative values. The comparator 54 determines whether or not the difference value of the representative value that is the output of the subtractor 53 is greater than a predetermined value.

  The embodiment of FIG. 5 is detection of the presence / absence of flash in the case of 2 frames, but in the case of 3 frames or more, the number of registers is increased, representative values are sequentially read from the registers, and arithmetic processing is performed to determine whether flash is present or not. It is possible to cope with a plurality of frames. For example, by setting the number of detected frames to 3 frames or more, it is possible to improve the accuracy of detecting the presence or absence of a flash even when shooting a press conference or the like where flashes are frequently cooked.

  In the embodiment, the representative value is calculated by the representative value calculator using the addition average value of all the pixels, so that the calculation amount is increased and the circuit scale is increased. FIG. 6 shows representative value calculation means 51 that can process a circuit scale for calculating a representative value with a more compact configuration. The representative value calculating means 51 in FIG. 1 includes an adder 61 and a shift multiplier 62. The adder 61 adds the operation value of the previous pixel and the operation value of the newly input pixel, and shifts the calculated value by 1 bit by the shift multiplier 62 to halve. Alternatively, since the first pixel has no previous pixel, the pixel to be added may be set to 0, or may be controlled by the control means so as not to perform a half operation only at the beginning. Such processing is not a strict addition average value, but a value approximate to the average value is obtained. Further, such arithmetic processing is a representative value obtained under the same conditions for any frame, and comparison processing of the representative value of each frame is possible. In any case, the frame representative value calculator 51 based on the average value of all pixels requires a large-capacity adder and a large divider, and thus becomes large-scale. The calculator 62 can be configured, and a simple configuration can be obtained. The adder 61 is reset by inputting a reset signal for each frame by a horizontal / vertical synchronization signal, and a representative value for each frame is calculated. The reset signal is output to the control means in synchronization with the horizontal / vertical synchronization signal. The control means controls the functional blocks of the register 52, the subtractor 53 and the comparator 54, or the adder 61 and the shift multiplier 62.

  In the television camera of this embodiment, the video signal is recorded in the video data storage area of the recording medium 15, and the flash presence / absence information of each frame is recorded in a storage area different from the video signal of the recording medium 15. As shown in FIG. 7, the recording mode of the flash presence / absence information is assigned with frame numbers in the order of each frame, and flash presence / absence is recorded in a predetermined storage area of the recording medium 15 in chronological order corresponding to each frame number. The In the recording configuration of FIG. 7, the number of frames is 300, frame numbers from 1 to 300 are assigned, and frame numbers 1 to 150 and frame numbers 181 to 300 out of frame numbers 1 to 300 are not flashed. ”And frame numbers 151 to 180 have a flash, and“ Yes ”is shown. The display of “present” or “not present” in the flash presence / absence column is not limited to “present” or “not present”, and may be a display using symbols, figures, or the like. In the storage area, code numbers corresponding to “present” and “not present” are stored, and information on the presence or absence of flash can be displayed on the display.

  Further, the storage medium 15 stores edit data of the configuration example shown in FIG. The edit data includes a shooting time, a format, the number of flashes, and frame position information. In the configuration example of the edit data in FIG. 8, the shooting time is 10 sec, and the format of the video signal is MPEG-2. In the configuration example in FIG. 7, the number of flashes is 30 (frame numbers 151 to 180), the frame position The information is frame numbers 151-180. In the editing data creation, editing data from the start to the end of shooting is automatically recorded on the recording medium 15 at the same time as the end of shooting. Further, the shooting date and the shooting time may be automatically recorded in the editing data.

  In the present embodiment, the video signal processing means (video DSP 12) for processing the video signal from the solid-state imaging device 11 and the output signal of the video signal processing means (video DSP 12) include the flash video of the still image camera. The flash discriminating means (flash discriminating circuit 13) for generating a trigger signal indicating that there is a flash when it is included, and the video signal based on the trigger signal from the flash discriminating means (flash discriminating circuit 13). A recording control means (CPU 14) for creating data relating to flashing of output video data of the processing means (video system DSP 12) and outputting together with the output video data, and a recording medium 15 for recording output from the recording control means (CPU 14). It is a TV camera equipped. When the flash discriminating means (flash discriminating circuit 13) generates a trigger signal, it can be discriminated that there is a flash, and when no trigger signal is generated, it can be discriminated that there is no flash. The determination can be made based on the presence or absence of a trigger signal. The operation timing of the flash discriminating means (flash discriminating circuit 13) corresponds to the vertical / horizontal synchronization signal. The data related to flash information includes the presence / absence of flash, the number of flashes in the clip, and the frame number of the flash, and may further include shooting date, shooting time information, and the like.

  The recording control means (CPU 14) assigns frame values (numbers) in the order of frames of the video data, and the video data is recorded in the storage medium 15 for each frame, and is determined by the flash determination means (flash determination circuit 13). When the result is recorded on the recording medium 15 as flash information, the pre-assigned frame number can be acquired in consideration of the processing time of the flash discriminating means, and the flash information can be reliably written in a predetermined frame number.

  Further, the flash discriminating unit (flash discriminating circuit 13) includes an arithmetic unit (frame representative value calculator 51) that calculates a representative value of one frame, a holding unit (register 52) that holds the representative value for at least one frame, Comparing means (comparator 54) for comparing the difference value between the calculated representative value and the representative value held in the holding means (register 52) with a predetermined value. Note that the representative value of one frame is an average value of all pixels in one frame. Further, the representative value of one frame includes an adder 61 that adds the calculated value of the input pixel and the calculated value of the pixel immediately before the input pixel, and a shift calculator that halves the output of the adder 61. 62 can be calculated by a calculation means constituted by 62. As described above, the calculation of the representative value can be shortened by performing it in the clip.

  In this embodiment, when editing broadcast video in the studio, the storage medium 15 taken out from the TV camera is loaded into the editing device, the editing data is first read, and the most optimal from the frame position information (the numerical value of the frame address). It is possible to select a shooting portion, read and edit video data, and further, edit individual video data for broadcast video by specifying a frame address. Also, it is possible to specify a video to be broadcast by inputting a frame number based on the flash presence / absence information.

  In addition, since the number of flashes is recorded in the editing data, by using the data, it is possible to quickly search whether the video signal including the flash is included after the video signal currently being edited. Can be edited efficiently. Further, when this recording medium is used as an editing machine such as a VTR, it is also possible to record information on the flash at the mark point, in point or out point used for cueing.

  As an application example of the present invention, it can be used as a television camera used for broadcasting coverage, and is suitable for broadcasting coverage. It is particularly suitable for interviews such as a press conference where newspaper reporters are present.

It is a block diagram of the television camera which concerns on one Embodiment of this invention. It is explanatory drawing of the flash discrimination | determination by 2 frames in this embodiment. It is explanatory drawing of flash discrimination | determination by 3 frames in this embodiment. It is explanatory drawing of the flash | flush discrimination | determination by 3 frames different from FIG. 3 in this embodiment. It is a block diagram of the flash discrimination circuit in the present embodiment. It is a principal part block diagram of the 1 frame representative value calculation circuit in this embodiment. It is a figure which shows the structural example of the flash information recorded on the recording medium in this embodiment. It is a figure which shows the structural example of the data for editing in this embodiment. It is a block diagram of the conventional representative still picture automatic generation device.

Explanation of symbols

11 Solid-state image sensor 12 Video system DSP (Video signal processing means)
13 Flash discrimination circuit (flash discrimination means)
14 CPU (recording control means)
15 recording medium 51 frame representative value calculator (representative value calculating means, calculating means)
52 Register (holding means)
53 Subtractor 54 Comparator (Comparison means)
61 adder 62 shift multiplier

Claims (6)

Video signal processing means for processing a video signal from a solid-state image sensor and outputting video data;
Detects whether or not the video data output by the video signal processing means includes a flash video from a still image camera, and if the flash video is included, outputs a trigger signal indicating that the video data is flashed Flash discrimination means to
Recording control means for creating flash information of the video data and outputting together with the video data by the trigger signal from the flash discrimination means;
A television camera comprising: a recording medium for recording an output from the recording control means.   The television camera according to claim 1, wherein the flash information includes a presence / absence of a flash, a number of flashes in a clip, and a frame value with a flash.   2. The recording control unit according to claim 1, wherein the frame control unit acquires the frame value based on a delay time due to a processing time of the flash discriminating unit when acquiring a frame value given in order of each frame of the video data. TV camera described in 1. The flash discriminating means; representative value calculating means for calculating a representative value of one frame;
Holding means for holding the representative value for at least one frame;
The television camera according to claim 1, further comprising a comparison unit that compares a difference value between the calculated representative value and the representative value held by the holding unit with a predetermined value.   5. The television camera according to claim 4, wherein the representative value of one frame is an average value of all pixels of one frame. The representative value of the one frame is an adder that adds the pixel of the input frame and the operation value of the pixel immediately before the pixel of the input frame;
5. The television camera according to claim 4, wherein the TV camera is calculated by an arithmetic means comprising a shift arithmetic unit that halves the output of the adder.

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