JP2009038426A - Double resolution video camera and double resolution data recording and reproducing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a means for expanding a monitoring visual field range to the extent of being able to specifying who an individual is when stopping monitoring video, displaying a photographed image and showing the face of the individual in close-up. <P>SOLUTION: A video camera and a consecutive photographing camera are synchronized on the basis of a synchronizing signal generated by a synchronizing signal generating apparatus to perform photographing. Photographed data is recorded in a recording and playback apparatus so as to clarify a synchronous relation. Even though spatial resolution of the video camera is inferior to that of the consecutive photographing camera, the video camera photographs an image (frame) every 1/30 second and performs Mpeg compression of 15 frames as GOP (Group of Picture). The consecutive photographing camera is synchronized with the first I frame of GOP to photograph an image every 1/2 second with high spatial resolution. The recording and reproducing apparatus plays back a video image, stops at an I frame, enables a user to look at an image of the I frame, and can present an image photographed by being synchronized with the I frame and having high spatial resolution as necessary. Consequently, a monitoring visual field can be expanded to the extent that the face of the individual can be specified. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The technical field of the present invention is an invention related to a photographing apparatus and a recording / reproducing apparatus in the fields relating to video and photography such as surveillance cameras and home video cameras.

(1) About digital video cameras and digital cameras Digital video cameras that shoot continuously with a time resolution of about 1/30 second (frame rate 30 fps) that humans can see as moving images without a sense of incongruity are commercially available. Yes. In the DV format of the video camera standard, the screen size is 720 x 480 pixels (Full
In the case of D1), the compression method is Mpeg1 or Mpeg2. Even high-definition models with a large number of pixels are 1440 x 1080 pixels. The recording compression method is generally Mpeg2.

  Digital cameras, on the other hand, have a large number of pixels instead of a low time interval of 1/3 to several seconds until the next image is taken. For example, a product with 10 million pixels (3648 x 2736 pixels) is commercially available. Yes.

  In general, because the amount of data transferred by the CCD has a limit per hour, with the same data transfer capability, a digital video camera can set the number of pixels instead of continuously shooting with a high time resolution of 1/30 seconds. There is a trade-off relationship that digital cameras can only shoot at a low time resolution of 1/3 second instead of having a high pixel count of 10 million pixels.

  To compensate for this trade-off, digital video cameras are commercially available that can take pictures with a large number of pixels with the same CCD. However, even if a CCD with a high pixel count is used, video is shot with a low number of pixels in the video shooting mode, and is shot with a high number of pixels in the photo mode. In addition, S company's DVD camera, etc. has a function that can take up to 3 photos of up to 3 million pixels even during movie shooting, but it transfers photo data after movie shooting is finished. There is no function to shoot.

  To compensate for this trade-off, digital cameras are also available on the market that can shoot video with a reduced number of pixels. However, when the video mode is set, photography cannot be performed. There is nothing in the video mode that takes a series of photos at the same time.

  As described above, a digital video camera is characterized by being a video shooting means that has excellent temporal resolution for continuous shooting but has a small number of pixels and low spatial resolution. A digital camera has a large number of pixels. This is a continuous photography means that is excellent in spatial resolution but inferior in time resolution for continuous photography.

(2) Data compression method In general, data captured by a digital video camera is compressed by Mpeg, and data captured by a digital camera is compressed by Jpeg.

  Mpeg compression is a standard for moving images, and there are many explanatory documents. Commentary literature can be easily found on the Internet, and is described in, for example, Non-Patent Document 1.

Mpeg has a GOP (Group of Picture) structure in which several pieces of image data are grouped independently. 1GOP is normally set to 0.5 seconds (15 images). One image (I frame) at the head of the GOP is Jpeg-compressed, and the remaining 14 images are temporal differences in the forward direction or differences predicted from the front and back. Therefore, the I frame at the head of the GOP has the best image quality, and the other 14 images are generally predicted difference images, and the image quality is generally slightly inferior. In addition, there is a high-speed playback method in which only the first I frame of the GOP is played back when playing back at a high speed. In this way, the GOP I image is compressed by the same compression method as the photo shoot even though it is a video shoot, and it is an independent photo, convenient for playback, and image data such as fast forward playback and time skip playback is saved. It can also be used for a representative reference image.
Note that one video image is called one frame or one frame.

(3) Example of realizing a photograph and monitor having the same viewpoint and the same field of view using a half mirror Patent Document 1 describes an example of realizing a monitor having the same viewpoint and the same field of view using a half mirror. Yes. Utilizing the fact that half mirrors have the property of traveling half light straight and reflecting half light, and sharing the optical system before the half mirror with both, the monitor has the same viewpoint and the same as the photograph I tried to be in the field of view.

(4) Example in which part of image data is separately stored as still image data and used for searching for an image In Patent Document 2, when image data is recorded and stored on a video tape, a target image is searched later Since it takes time and effort to reproduce and view the videotape, a part of the frame image of the image data is extracted as a still image representative of the image and recorded for reference so that the relationship with the image can be understood. The method used for searching for images is described. When this method is used, a still image representative of the image can be viewed and fast-forwarded to the position of the video tape in which the image is stored, and the image can be reproduced. However, since a part of the frame of the image data is extracted from the still image, the resolution is the same as that of the image in which the image is stopped, and no further information can be obtained even if it is desired to look at the details rather than the image. Even if you want to see a suspicious person by looking at the image and want to look good with your face up, you can't observe more than the spatial resolution at the time the image was taken.

(5) Example in which camera and video camera are simultaneously photographed, combined and recorded In Patent Document 3, the resolution of a video camera is generally inferior to that of a camera. And how to save it. It is described that even if one frame of image data captured by a video camera is printed out, the resolution is poor, and when a camera image synthesized with the image is printed out, an image with good resolution can be obtained. However, in the method of Patent Document 3, there is no contrivance to synchronize an image frame captured by the video camera every 1/30 seconds and a photographing time of a photograph taken by the photo camera every second. There are no devices that have the same viewpoint and field of view. In this state, 29 frame images of the video camera and composite data with 30 frames are created by reducing the photographic image and substituting it as one frame of the image data. When reproducing the image, this composite data is reproduced. Therefore, one of the 30 frames is a heterogeneous image in which the viewpoint and field of view deviated from the photograph and a difficult-to-see image is reproduced. Even if the idea of making the viewpoint and the field of view the same is used, since the brightness and the hue are generally different, the video is still difficult to see. Moreover, when such different images are mixed, the compression rate is generally inferior in the Mpeg compression, and the image quality is deteriorated when the compression is forced.
JP-A-8-271976 JP 2001-320700 A JP 2004-80354 A http://www.macdtv.com/TVRecording/MPEG/GOP.html

  With conventional technology, when monitoring is performed based on video shot with a digital video camera that can be viewed as a movie, human movement can be captured, but even if a suspicious person is recognized, the frame is stopped and the face is raised In many cases, the number of pixels is small and it is not known who the person is.

  It is well known that a resolution of about 2 mm is usually required to project a person's face to a level that can be recognized by someone. When shooting with DV format 720-pixel digital video, if you do not view the range of about 1.4m, you will not be able to identify the individual with face up. Also, even in the HDV1080i system with a large number of pixels, the individual cannot be identified with the face up unless the horizontal width is 1440 pixels and the horizontal width is about 3 m.

  On the other hand, in the case of a digital camera that shoots with a width of 2800 pixels, the resolution is 2 mm when shooting a field of view of 5.6 m, so that the image can be recognized as a human face. This is a size suitable for places where many people can freely come and go, such as sidewalks and entrances to large buildings. However, since continuous shooting with a digital camera is as slow as 1/3 to several seconds, even if these images are flipped and displayed continuously, Is not a natural video, it becomes tired when viewed, and is inappropriate as a surveillance video.

  The present invention extends the surveillance field of view with a resolution that can be specified when someone stops the surveillance video and raises the person's face to a range that can be captured by a digital camera with a higher pixel count than that of a normal digital video, and The purpose of the surveillance video is to provide a means for monitoring as a video having the same smooth motion as that of a normal video camera.

  Note that the above means are not only for monitoring, but also for needs such as when you want a still picture of the quality of a digital camera with a beautiful face when you stop watching a child in a video for home use. It can respond.

  As a basic means for solving the above problems, the present invention is as follows. (1) A digital video camera that captures a picture that allows a human to see a video without a sense of incongruity and a digital camera that continuously captures images with a high number of pixels. (2) Save the video camera and the digital camera data that is continuously shot so that the synchronization relationship is known, play back the video shot with the digital camera, and synchronize with the digital camera when stopped Then, it stops at the shot frame, and can display the pixels of the digital camera shot in sync with that frame, if necessary.

  According to the present invention, an image can be viewed as a moving image without a sense of incongruity, and an image can be viewed with higher resolution than the image when the moving image is stopped if necessary. is there.

  Embodiments of the present invention will be described below with reference to the drawings. The present invention can take the form of a recording / reproducing apparatus such as a digital video camera, a surveillance camera, and an HDD.

  FIG. 1 is a configuration diagram in Embodiment 1 of the present invention. The configuration will be described below.

  The dual resolution digital video camera 101 of the present invention comprises a video camera 102, a continuous shooting camera 103, and a synchronization signal generator 104. When the synchronization signal generator 104 receives the shooting start signal from the controller 105, the synchronization signal generator 104 generates a signal indicating the timing of taking a video frame every 1/30 seconds and a signal indicating the timing of an I frame every 1/2 seconds.

  The video camera 102 shoots every 1/30 seconds based on the timing signal generated by the synchronization signal generator 104, and Mpeg-compresses every 1/2 seconds, that is, 15 frames as a group of processing units (GOP). Data can be sent to the recording / reproducing apparatus 107. In addition, the video camera 102 transmits an image taken every 1/30 seconds as an NTSC signal, and the display device 106 that has received the image can view the video captured by the video camera 102 in real time. The continuous shooting camera 103 can continuously take pictures every 1/2 second based on the timing signal generated by the synchronization signal generation device 104 and send the Jpeg-compressed data to the recording / playback device 107.

  When the recording / reproducing apparatus 107 receives a recording start signal from the controller 108, the recording / reproducing apparatus 107 receives data sent from both the video camera 102 and the continuous shooting camera 103 and records the data so that the synchronization relationship can be understood. When the playback start signal is received from the controller 108, the recorded video data is played back and the video is output to the display device 109. When a playback stop signal is received from the controller 108, the video playback is stopped and a still image is output. Based on a control signal issued from the controller 108, the video is skipped to an I frame and shot in synchronization with the I frame. Images taken by the continuous shooting camera can be output. When the PC 110 is connected to the recording / reproducing apparatus 107, the PC 110 can suck data from the recording / reproducing apparatus 107.

  FIG. 2 is an internal configuration diagram of the video camera 102. The light collected by the lens 201 is light-adjusted by the aperture 202 and an optical system is formed in which an image is formed by the video CCD 211. The electronic shutter 203 allows light to pass through for a predetermined time, for example, 1/600 second every 1/30 second based on the signal generated by the synchronization signal generator 104. The video CCD 211 causes the A / D 212 to sequentially read the charges stored in each pixel at 1/30 second intervals based on the signal generated by the synchronization signal generator 104. The A / D 212 converts the charge in each pixel of the video CCD 211 into digital information and sends it to the buffer memory 213. The buffer memory 213 temporarily stores the data sent from the A / D every 1/30 seconds based on the signal generated by the synchronization signal generator 104 as a single frame of data in order, and sequentially from the data ready to be sent. The data is sent to the Mpeg encoder 214 and the NTSC signal generation / output unit 216.

  The Mpeg encoder 214 Mpeg-compresses 15 frames of data as a batch of processing unit (GOP) data every 1/2 second based on the signal generated by the synchronization signal generator 104, and sends the compressed data to the output interface 215. send. The output interface 215 transmits the received data to the recording / reproducing apparatus 107 based on a predetermined communication format, for example, IEEE1394. The NTSC signal generation / output unit converts the received image data into an NTSC signal by analog conversion and transmits the image data so that the display device 106 can display an image. The digital signal may be transmitted without being converted into the NTSC signal.

  FIG. 3 is a diagram illustrating a configuration of the continuous shooting camera 103. The light collected by the lens 301 is light-adjusted by the diaphragm 302, and an optical system that forms an image by the image CCD 311 is formed. The electronic shutter 303 passes light for a predetermined time, for example, 1/600 second every 1/30 second based on the signal generated by the synchronization signal generator 104. The image CCD 311 causes the A / D 312 to sequentially read charges stored in each pixel at 1/30 second intervals based on the synchronization signal generated by the synchronization signal generator 104. The A / D 312 converts the charge in each pixel of the image CCD 311 into digital information and sends it to the buffer memory 313. The buffer memory 313 temporarily stores data sent from the A / D every 1/30 seconds based on the signal generated by the synchronization signal generator 104 as a single frame of data in order, and sequentially starts from the ready data. Send to Jpeg encoder 314.

  The Jpeg encoder 314 receives one frame of data from the buffer 313 based on the synchronization signal of the synchronization signal generator 104, Jpeg compresses it, and sends the compressed data to the output interface 315. The output interface 315 transmits the received data to the recording / reproducing apparatus 107 based on a predetermined communication format, for example, IEEE1394.

  FIG. 4 is a diagram showing the configuration of the synchronization signal generator 104. The clock 401 sends a clock signal having a constant period, for example, 30 Khz, to the counter 402. When the interface 404 receives the imaging start signal from the controller 105, the interface 404 outputs a voltage indicating an ON state that can be counted by the counter 402, for example, 1v. When the counter 402 receives an ON-state voltage indicating that counting can be performed from the interface 404, the value of the internal count memory is incremented by 1 each time the clock signal generated by the clock 401 is received, and the value of the count memory is set to 1000. When it exceeds, the count value is reset to 0 and a pulse is output. As a result, this pulse becomes a timing signal generated every 1/30 seconds, and is sent to the counter 403 and the video camera 102. The counter 403 counts 1/30 second pulse signals output from the counter 402. When the value of the internal counter memory exceeds 15, when the counter memory is reset to 0, a pulse is generated. As a result, this pulse becomes a timing signal generated every 1/2 second, and is sent to the video camera 102 and the continuous shooting camera 103. The video camera 102 and the continuous shooting camera 103 can perform shooting based on the timing signal.

  Further, when the interface 404 receives a photographing end signal from the controller 105, the interface 404 outputs a voltage indicating an OFF state that cannot be counted by the counter 402, for example, 0v. When the counter 402 receives an OFF state voltage indicating that it cannot be counted from the interface 404, the counter 402 does not count and does not generate a subsequent timing signal, and the video camera 102 and the continuous shooting camera 103 receive the timing signal. There is nothing, and the shooting operation ends.

  FIG. 5 is a diagram showing a configuration of the recording / reproducing apparatus 107. Upon receiving the recording start signal from the controller 108, the interface 503 issues a recording start interrupt signal to the processor 504, and the processor 504 executes the recording program from the program memory 505. When the processor 504 executes the recording program, the data received by the interface 501 and the interface 502 is transferred to the data memory 506 via the data memory 506 and further passed to the hard disk driver 508. At this time, the sector information is written into the sector management memory 507 so that the synchronization relationship between the Mpeg data of the video camera 102 received by the interface 501 and the Jpeg data of the continuous shooting camera 103 received by the interface 502 is also obtained. Then, these data and sector information indicating a place to write are sent to the disk driver 508.

The disk driver 508 writes data to a predetermined location on the hard disk 509 based on the data sent via the data memory 506 and the sector information. When the interface 503 receives a playback menu signal from the controller 108, the processor 504 is interrupted to start playback, and the playback menu program is read from a predetermined position in the program memory 505, and the playback menu program is executed. The shooting date / time information of the stored data is extracted from the management memory 507, processed into image information on the output screen, and the image information is passed to the NTSC signal generation output unit 511 via the data memory 506.
The NTSC signal generation / output unit 511 outputs the received image information as an NTSC signal. The display device 109 receives the NTSC signal generated by the NTSC signal generation output unit 511 and displays a menu image on the screen.

  When the operator views the menu screen displayed on the display screen 109 and operates the controller 108 so as to select the data desired to be reproduced, the controller 108 transmits a corresponding control signal to the interface 503, and further the predetermined data in the data memory 506. Information indicating the desired reproduction data is transmitted to the location. Further, when the interface 503 receives a playback start signal from the controller 108, the interface 503 interrupts the processor 504 to start playback, and the processor 504 calls the playback program from a predetermined position in the program memory 505 to execute the playback program, and the data The desired video image data is extracted from the hard disk 509 with reference to the information of the reproduction data stored in the predetermined location of the memory for use 506, and the image data is passed to the decoder 510 via the data memory 506.

  The video data extracted from the hard disk 509 is Mpeg-compressed data. The decoder 510 decompresses the Mpeg compression and sequentially sends image data for video to the NTSC signal generation / output unit 511. The NTSC signal generation / output unit 511 sequentially The image data is output as an NTSC signal, and as a result, the video captured by the video camera 102 is reproduced on the display device 109.

  Similarly, when the interface 503 receives a fast-forward signal or a rewind signal from the controller 108, the interface 503 forwards or returns the position of data read from the hard disk 509. Also, when the interface 503 receives a playback stop signal from the controller 108 during image playback, the processor 504 controls each device and consequently stops playback of the moving image, and the display device 109 displays the still image at that time. In addition, when the skip signal is received in the I frame, the skipped I frame image is displayed, and when the photo presentation signal is received, the photograph data taken in synchronization with the I frame is read from the sector management memory 507 to the hard disk. The decoder 510 is extracted from the storage location 509 by Jpeg decompression, and the NTSC signal generation output unit 511 continues to flow the photographic image as the NTSC signal, and as a result, the photograph can be displayed on the display device 109.

  Further, when the interface 503 receives a recording end signal from the controller 108, it outputs a recording end interrupt signal to the processor 504, and the processor 504 stops the operation of the recording program and the recording ends.

  The recording / reproducing apparatus 107 can transfer data to the hard disk 509 to the PC 110 through the IEEE1394 interface 512. As means for transferring data to the PC 110, the same means as when a commercially available hard disk, video camera, digital camera, etc. transfer data to the PC 110 can be used.

  FIG. 6 is a diagram showing the configuration of the decoder 510. The buffer memory 601 writes the data transferred from the data memory 506 for one image if it is Jpeg data, and writes it to the GOP input memory if it is Mpeg data. By changing the roles of the memory for writing and reading, the memory that has been written so far is used for reading, and the memory that has been used for reading so far is used for writing, so that writing and reading can be performed simultaneously.

  The Jpeg decoding arithmetic chip 602 determines whether the data stored in the memory banked for reading from the buffer memory 601 is Jpeg or Mpeg, and determines whether the data is Jpeg data. Output to the memory 604. If the data stored in the memory banked for reading from the buffer memory 601 is Mpeg data, the code operation chip 603 by Mpeg performs Mpeg decompression operation and outputs the result to the buffer memory 604. The buffer memory 604 can sequentially send data to the NTSC signal generation output unit 511 from the memory that has been input and is ready for output. The NTSC signal generation / output unit 511 sequentially extracts data necessary for generating the NTSC signal from the buffer memory 604 and converts it into the NTSC signal, and the display device 106 receives the signal and displays a video or an image.

  FIG. 7 is a diagram illustrating the configuration of the controller 105. When the operator presses the shooting start switch 701 and the shooting end switch 702, the switch I / O 711 generates a control signal corresponding to each switch and sends the respective signals to the synchronization signal generator 104. For example, when the shooting start switch 701 is pressed, a ++ -------------------------------------------- signals are sent from the transmission start signal +-++-++-+- When the photographing end switch is pressed, a ++ ----- + signal is sent to the transmission start signal +-++-+-++-to make a photographing end signal.

When the synchronization signal generator 104 receives the shooting start signal, it generates a synchronization signal, and the double resolution digital video camera 101 starts shooting. Similarly, when the synchronization signal generation device 104 receives the shooting end signal, it does not generate a simultaneous signal, and the dual resolution digital video camera 101 ends shooting.

  FIG. 8 is a diagram illustrating the configuration of the controller 108 for recording and reproduction. A recording start switch 801, a recording end switch 802, a playback menu selection switch 803, a playback stop fast forward rewind switch 804, an I frame skip switch 805, and a photo presentation switch 806 are switched by the switch I / O 811 when the operator presses each switch. A control signal corresponding to the state is generated, the control signal is sent to the recording / reproducing apparatus 107, and the recording / reproducing apparatus 107 performs an operation corresponding to each. For example, when the recording start switch 801 is pressed, the switch I / O 811 outputs a recording start signal with a ++ ------ signal at the transmission start signal +-++-++-+-, and the recording end switch When the user presses 802, a recording stop signal with a ++ --- ++ signal is output at the transmission start signal +-++-++-++-.

  In addition, the playback menu selection switch 803 receives a playback menu signal from the switch I / O 811 when the center is pressed, and a signal for selecting data desired to be played when the left and right are pressed. Similarly, when the upper side of the playback stop fast forward / rewind switch 804 is pressed, the playback start signal is pressed, when the left side is pressed, the rewind signal is pressed, when the right side is pressed, the fast forward signal is pressed, and when the lower side is pressed, the stop signal is sent from the switch I / O 811. Sent. When the I frame skip switch 805 is pressed, a signal for skipping to the I frame is sent from the switch I / O 811 when the photo presentation switch 806 is pressed. The configuration of the first embodiment of the present invention and the operation of each device have been described above.

  Next, FIG. 13 shows a timing diagram in which the timing of the synchronization signal generated by the synchronization signal generation device 104 that enables the synchronized shooting that is a feature of the present invention is known.

  A pulse 1301 emitted every 1/30 seconds shown in FIG. 13 is emitted from the counter 402. When there are 15 pulses 1301 emitted every 1/30 second, a group of pulses 1302 forming a group of GOPs is obtained. A pulse 1303 emitted every 1/2 second in synchronization with the first pulse of the pulse group 1302 forming the GOP is emitted from the counter 403. The continuous shooting camera 103 takes a picture based on a pulse 1303 emitted every 1/2 second. The video camera 102 captures each frame image based on a pulse 1301 emitted every 1/30 second, knows the head of the GOP based on a pulse 1303 emitted every 1/2 second, and collects a group of Mpeg processing data. Create

  15, 16, and 21 show the sectors written in the sector management memory 507 so that the recording / reproducing apparatus 107 can record the synchronously captured data, which is a feature of the present invention, so that the synchronous relationship can be understood. It is a figure which shows the various tables which showed management information.

  FIG. 21 is a diagram showing a table 2100 indicating sector numbers to be recorded next and addresses in the sectors. The actual value is stored at a predetermined address in the sector management memory 507, and the processor 504 can write the data to an appropriate place on the hard disk by referring to this value. The moving image Mpeg data coming from the video camera 102 is a series of moving images with the sector number 2101 where the moving image data is to be recorded next and the sector number and address written in the address 2102 in the sector where the moving image data is to be recorded next as the head. When data for one GOP is written to the hard disk 509 and writing of data for one GOP is completed, the sector number 2101 for recording moving image data next and the address in the sector for recording moving image data next are recorded. The contents of 2102 are updated by the amount of written information so that the sector to be written next and the sector internal address can be known. Further, the next GOP data is written in the same manner, and when the data writing is completed, if there is the next writing, the writing destination first sector and the sector internal address are the sector numbers where the moving image data should be recorded next. 2101, the moving image data is written in the address 2102 in the sector to be recorded next.

  Similarly, the Jpeg data of the still image coming from the continuous shooting camera 103 includes the sector number 2103 where the still image data is to be recorded next, and the sector number written in the address 2104 in the sector where the still image data is to be recorded next. Jpeg data for one still image is written to the hard disk 509 starting from the address, and when the writing is completed, the written information is updated and the next still image can be written sequentially.

  FIG. 15 is a diagram showing specific table contents of the sector management information 1501 indicating the data storage state. When the writing of information is finished in the sector number 1502 of the hard disk 509, the sector number 1503 recorded next is written. When the next recorded sector number 1503 has a value of 00000, the sector number 1502 indicates that information has not been written yet or is being written. Whether or not data is being written can be determined by looking at the contents of the memory indicating the sector number in which data is being written.

  Referring to FIG. 15, in this example, it can be seen that data is stored subsequent to sector numbers 00001, 00005, 00008, 00003, 00010. It can also be seen that sector numbers 00002 are followed by 00004, 00007, and 00009.

  FIG. 16 shows a synchronization relationship management table 1601 in which the synchronization relationship between the Mpeg data coming from the video camera 102 and the Jpeg data coming from the continuous shooting camera 103 is known. The shooting number 1602 and the shooting date and time 1603 when the shooting was started, the sector number 1604 where the moving image shot by the video camera 102 was started to be stored as Mpeg data, the address 1605 within the sector, and the continuous shooting camera 103 in synchronization therewith This is a table in which a sector number 1606 at which saving of a photographed photograph is started as Jpeg data and an address 1607 in the sector are described. As a result, data can be stored in the hard disk 509 so that the synchronization relationship between the moving image and the still image captured by the video camera 102 and the continuous shooting camera 103 in each shooting can be understood.

  Referring to FIG. 16, in this example, the sector number 1604 where the storage of the moving image described in No. 1 of the shooting number 1602 is started is 00001, and the address 1605 in the sector is 000000000000. In addition, the sector number 1606 at which storage of a still image taken in synchronization with this is started is 00002, and the address 1607 in the sector is 000000000000. The storage start sector number 1604 of the moving image described in the second shooting number 1602 is 00001, and the address 1605 in the sector is 115321522.

  In addition, the storage start sector number 1606 of the still image taken in synchronization with this is 00002, and the address 1607 in the sector is 14113384. The processor 504 can extract desired data for each shooting from the hard disk 509 with reference to the above table values. When writing is started, a table 2100 indicating the sector number to be recorded next and the address in the sector described in FIG. Information can be written, and moving image and still image data can be written from a predetermined sector and address of the hard disk 509.

  FIG. 17 is a diagram schematically illustrating the relationship between a moving image and a still image displayed on the display device 109. The moving image 1701 is a group of 15 frames (GOP 1702), and each frame is an image taken every 1/30 seconds. The first frame of the GOP 1702 is called an I frame 1703. With Mpeg compressed data, only this I frame 1703 in the GOP 1702 is Jpeg compressed, and the image quality is better than the other 14 frames.

  In Embodiment 1 of the present invention, a continuous still image 1705 is captured in synchronization with an I frame 1703 having a particularly good image quality in a moving image. The continuously captured still images 1704 have a synchronous relationship with the moving image 1701, and each I frame of the moving image 1701 has a still image captured in synchronization therewith. In the above embodiment, in addition to displaying a predetermined I frame of the moving image 1701, a still image taken in synchronization with this can be displayed as necessary.

  As described above, in the first embodiment of the present invention, the moving image shot by the video camera 102 and the still image continuously shot by the continuous shooting camera 103 are shot synchronously, and are recorded and saved so that the synchronization relationship can be understood. Can play.

  A configuration diagram according to the second embodiment of the present invention is the same as FIG. Further, the configuration diagrams of the respective devices shown in FIGS. 2, 3, 5, 6, 7, and 8 are the same. FIG. 20 is a configuration diagram of the synchronization signal generator 104, and FIG. 14 is a schematic diagram illustrating timing of pulses generated by the synchronization signal generator 104. Others are the same as Example 1 of this invention.

  In Embodiment 1 of the present invention, the video camera 102 takes a frame image every 1/30 seconds, forms a GOP with 15 frames, and the continuous shooting camera 103 takes a picture in accordance with the head of the GOP. The second embodiment of the present invention is an embodiment in which the continuous shooting camera 103 captures images every 2 seconds.

  FIG. 20 is a diagram illustrating a configuration of the synchronization signal generation device 104 according to the second embodiment of the present invention. Compared with FIG. 4 showing the configuration of the synchronization signal generator 104 according to the first embodiment of the present invention, a counter 2004 is added, and the synchronization signal from the counter 2004 is sent to the continuous shooting camera 103. Others are the same as FIG. The counter 2004 emits a timing signal every time the timing signal issued every 1/2 second from the counter 403 is counted four times. As a result, a timing signal is sent to the continuous shooting camera 103 every 2 seconds.

  FIG. 14 is a timing chart schematically showing pulses of various synchronization signals generated by the counter 403 of the second synchronization signal generator 104 of the present invention. Compared to the first timing diagram of the present invention of FIG. 13, there is a difference that there is a pulse 1404 emitted every 2 seconds. Others are the same. The pulse 1404 emitted every 2 seconds is synchronously emitted once every four pulses 1303 emitted every 1/2 second. For this reason, the continuous shooting camera 103 that captures a pulse 1404 emitted every 2 seconds as a timing signal captures every four photos in synchronization with the I frame of the video camera 102.

  As described above, in the second embodiment of the present invention, a photograph synchronized with the I frame is obtained for every four GOPs. For this reason, it is possible to cope with the case where the upper limit of the speed at which the continuous photographing camera 103 can continuously photograph with a high number of pixels is 2 seconds.

  FIG. 9 is a configuration diagram in Embodiment 3 of the present invention. Compared with FIG. 1 which is a configuration diagram of the first embodiment of the present invention, the camera controller 105 and the recording / reproducing controller 108 are the same except that the common controller 920 is used.

  FIG. 10 is a configuration diagram of the common controller 920. There are all the switches (701, 702, 801 to 806) of the controller 105 for the camera and the controller 108 for recording / playback, and the switch I / O 1011 generates a control signal corresponding to each switch when the switch is pressed. Then, the signals are passed to the synchronization signal generating device 104 and the recording / reproducing device 107, respectively. Since the signal to be generated is the same as that of the first embodiment of the present invention, the same operation as that of the first embodiment of the present invention is performed.

  The third embodiment of the present invention has an advantage that the number of controllers is reduced.

  Note that the connection from the common controller 920 to the synchronization signal generating device 104 and the recording / reproducing device 107 is not limited to a connection as shown in the figure, but may be a so-called remote control connection by a connection using commercially available infrared communication. it can.

  FIG. 11 is a configuration diagram according to the fourth embodiment of the present invention. Compared to FIG. 9 which is a configuration diagram in the third embodiment of the present invention, the recording / reproducing apparatus 107 is different only in the built-in dual resolution digital video camera 101, and the others are the same. The built-in recording / reproducing apparatus 1107 has the same configuration as the recording / reproducing apparatus 107.

  That is, the fourth dual-resolution digital video camera 1101 of the present invention has the built-in recording / reproducing device 1107 inside, and when the dual-resolution digital video camera 1101 is carried, there is no recording / reproducing device outside at the carrying destination. However, there is an advantage that recording can be performed internally.

  In addition, the PC 110 can draw data from the built-in recording / playback device 1107, and the PC 110 can display and stop video with predetermined software corresponding to this data, frame-by-frame I frame, and high-speed playback in the I frame. In addition, photographic images corresponding to I frames can be presented.

  The block diagram in Example 5 of this invention is FIG. Compared with FIG. 11 which is a configuration diagram in the fourth embodiment of the present invention, the common controller 920 and the display device 106 are different only in a built-in double resolution digital video camera 1101, and the others are the same.

  That is, the fifth dual-resolution digital video camera 1201 of the present invention has a controller 1220 attached to the main body and a display device 1206 attached to the main body, and when the dual-resolution digital video camera 1201 is carried, Thus, there is an advantage that display can be performed without an external display device.

  The configuration of the controller 1220 attached to the main body is the same as that of the common controller 920.

  In addition, the display device 1206 attached to the main body switches the signal coming from the video camera 102 and the signal coming from the built-in recording / playback device 1107 so that both can be displayed appropriately so that the image displayed on the display device 109 can also be displayed. The dual resolution digital video camera 1201 can be provided with a switch.

  FIG. 18 is a configuration diagram in Embodiment 6 of the present invention. Compared with FIG. 1 which is the first configuration diagram of the present invention, the first dual-resolution digital video camera 101 of the present invention is changed to the sixth single-view same-field double-resolution camera 1801 of the present invention. Others are the same.

  FIG. 19 is a configuration diagram of the same-view same-field double-resolution camera 1801 according to the sixth embodiment of the present invention. In the first configuration of the present invention, as shown in FIGS. 2 and 3, there are two lenses and diaphragms, lenses 201 and 301 and diaphragms 202 and 302. In the sixth configuration of the present invention, the lens There is only one, 1901 and a diaphragm 1902. Instead, the half mirror 1900 transmits half of the light and reflects half of the light, and the video CCD 211 and the image CCD 311 receive an image of the same field of view from the same viewpoint. Others are the same as Example 1 of this invention.

  According to the sixth embodiment of the present invention, there is an advantage that continuous pictures taken in synchronization with the video image and the I frame are also taken from the same field of view and the same viewpoint.

  FIG. 22 is a configuration diagram in the seventh embodiment of the present invention. Compared with FIG. 1 of the first embodiment of the present invention, the controller 108 is the same as the controller 2208 except for the controller 2208. FIG. 23 is a configuration diagram of the controller 2208. Compared with FIG. 8 which is a configuration diagram of the controller 108, the enlargement / reduction skip switch 2307 and the view scroll switch 2308 are added, and the others are the same. When the added switches 2307 and 2308 are pressed, the switch I / O 811 generates a unique signal corresponding to each function and sends it to the recording / reproducing apparatus 107. The configuration diagram of the recording / reproducing apparatus 107 is FIG. 5, and the configuration is the same as that of the first embodiment of the present invention. Since a program corresponding to the added function is stored in the program memory 505, the expanded function can be executed even if the hardware is the same.

  In the seventh embodiment of the present invention, as with the first embodiment of the present invention, the data recorded by the dual resolution digital video camera 101 is recorded by the recording / reproducing apparatus 107. After that, the image is reproduced by the recording / reproducing apparatus 107, stopped at the desired I frame image, and the still image taken by the continuous photographing camera 103 taken in synchronization with the I frame image is displayed on the display device 109. This is exactly the same as Example 1 of the present invention. In the seventh embodiment of the present invention, the still image displayed on the display device 109 is enlarged and displayed, the display field of view when the image is enlarged is scrolled, and the still image of the I frame taken next or before is enlarged. Added a function to skip display while maintaining the rate and display field part.

  Next, the extended function that is the feature of the seventh embodiment of the present invention will be described in detail.

  When the upper side of the enlargement / reduction skip switch 2307 in FIG. 23 is pressed, the enlargement signal advances, when the lower side is pressed, the reduction signal advances. When the left side is pressed, the skip signal returns to the previous I frame. When the right side is pressed, the skip signal advances to the next I frame. A switch I / O 811 generates a skip signal. When the left side of the visual field scroll switch 2208 is pressed, a signal for scrolling the display visual field to the left side, and when the right side, upper side, and lower side are pressed, the signal for scrolling the display visual field to the right side, upper side, and lower side respectively. appear.

  When the interface 503 of the recording / reproducing apparatus 107 shown in FIG. 5 receives a signal generated by the controller 108, the processor 504 is interrupted, and the processor 504 loads a predetermined program corresponding to the type of the signal from the program memory 505. A predetermined operation described in the program is executed.

  When the same procedure as in the first embodiment is executed and the display device 109 displays a photographic image corresponding to a desired I frame, the operator presses the upper side of the enlargement / reduction skip switch 2307 of the controller 2208 to switch I / O. When the O811 generates an enlargement signal and the interface 503 receives the enlargement signal, an enlargement interrupt is issued to the processor 504, the enlargement program is read from a predetermined position in the program memory 505, and the enlargement program is executed. When the enlargement program is executed, the value of the enlargement ratio recorded in the data memory 506 is changed to a value twice that value, and together with the parameter data of the display visual field center position recorded in the data memory 506, the decoder 510 To send these parameter data.

  When these parameters are written in a predetermined location of the buffer 601 of the decoder 601, the Jpeg decoding arithmetic chip 602 decompresses the Jpeg data in the buffer memory 601, and refers to the parameters of enlargement / reduction and visual field center position. The image data obtained by enlarging / reducing the necessary portion to fit on the screen of the display device 109 is sent to the buffer memory 604, and the NTSC signal generation / output device 511 converts the image information of the image data stored in the buffer memory 604 into the NTSC signal. Output. As a result, an image having a desired enlargement ratio and field-of-view center corresponding to the desired I-frame image is displayed on the display device 109, and continues to be displayed unless another operation is performed.

  Similarly, when the operator presses the lower side of the enlargement / reduction skip switch 2307 of the controller 2208, the value of the enlargement ratio recorded in the data memory 506 is changed to a value that is ½ of that value, and the view scrolling is performed. When the left side of the switch 2308 is pressed, the parameter data value of the display visual field center position recorded in the data memory 506 is shifted to the left by one visual field. Similarly, when the right side is pressed, the right side and the upper side are changed. When pressed, the parameter data value of the display visual field center position recorded in the data memory 506 is changed so as to move one field of view downward when the upper side is pressed. Similarly, these parameter values are passed to the decoder 510, and an image obtained by performing desired enlargement / reduction and scrolling of the display field of view is displayed on the display device 109.

  It should be noted that if an upper limit or a lower limit is set for the parameter value of the enlargement / reduction ratio or the display visual field center position so that the data to be displayed fits on the display screen, the display device 109 will not be displayed off the display screen. Can do. In addition, by setting the initial default value of these values so that the photograph appears on the screen of the display device 109 in the same size as the video image, the location of where the picture suddenly appears when the picture is displayed for the first time. It is avoided that no enlarged image is displayed.

  In addition, when the left side of the enlargement / reduction skip switch 2307 is pressed while the photographic image is being displayed on the display device 109, the photographic data corresponding to the I frame immediately before the I frame currently being viewed is stored in the sector management memory 507. The decoder 510 extracts the data from the storage location of the hard disk 509, decompresses it to Jpeg, and displays on the display device 109 the same enlargement / reduction ratio and display field center image as when the previous I frame was displayed. . In addition, when the right side of the enlargement / reduction skip switch 2307 is pressed, a photograph corresponding to the I frame that is one ahead of the I frame that is currently being viewed is displayed on the display device 109.

  The recording / reproducing apparatus 107 has the functions described above because the video camera 102 and the continuous camera 103 can be photographed in synchronization with each other based on the synchronization signal generated by the synchronization signal generating apparatus 104. The fact is that the sector management information is recorded in the sector management memory 507 and the data is recorded and saved in the hard disk 509 so that the data of the video camera and the digital camera that continuously shoots can be synchronized. . In addition, if necessary, it is possible to display a photograph corresponding to a desired I frame, and it is possible to realize a user-friendly function as described above.

  Further, as in the sixth embodiment, when an optical system is formed such that the images captured by the video CCD 211 and the image CCD 311 have the same viewpoint and the same field of view, a photograph taken in synchronization with the I frame image of the image data The image has the same viewpoint and the same field of view, and when the video image is viewed and stopped at the I frame, when the corresponding photographic image is viewed, there is less discomfort with the video image, it is easier to see and the usability is further improved.

  The present invention may be used in all fields in which a digital video camera or a digital camera captures an image. For example, it can be used for surveillance cameras, video cameras for home use and business use, etc. In addition, there is a possibility that it can also be applied to the creation of contents such as advertisements and amusements.

FIG. 1 is an overall configuration diagram in the first and second embodiments of the present invention. FIG. 2 is a configuration diagram of the video camera 102 according to the first to fifth embodiments of the present invention. FIG. 3 is a configuration diagram of the continuous shooting camera 103 according to the first to fifth embodiments of the present invention. FIG. 4 is a configuration diagram of the synchronization signal generator 104 according to the first to third embodiments of the present invention. FIG. 5 is a configuration diagram of the recording / reproducing apparatus 107 and the built-in recording / reproducing apparatus 1107 in the embodiment of the present invention. FIG. 6 is a block diagram of the decoder 510 in the embodiment of the present invention. FIG. 7 is a configuration diagram of the controller 105 in the first, second, and sixth embodiments of the present invention. FIG. 8 is a configuration diagram of the controller 108 in the first, second, and sixth embodiments of the present invention. FIG. 9 is an overall configuration diagram in Embodiment 3 of the present invention. FIG. 10 is a configuration diagram of the common controller 920 in the third and fourth embodiments of the present invention. FIG. 11 is an overall configuration diagram in Embodiment 4 of the present invention. FIG. 12 is an overall configuration diagram in Embodiment 5 of the present invention. FIG. 13 is a timing chart of a synchronization signal generated by the synchronization signal generator 104 (FIG. 4) according to the first to third embodiments of the present invention. FIG. 14 is a timing diagram of a synchronization signal generated by the synchronization signal generator 104 (FIG. 20) according to the second embodiment of the present invention. FIG. 15 is a diagram showing sector management information indicating a data storage state written in the sector management memory 507 of the present invention. FIG. 16 shows a synchronization relationship management table written in the sector management memory 507 of the present invention. FIG. 17 is a schematic diagram showing a synchronization relationship between a moving image and a still image shot in the present invention. FIG. 18 is an overall configuration diagram in Embodiment 6 of the present invention. FIG. 19 is a block diagram of a dual-resolution video camera having the same viewpoint and same field of view according to Embodiment 6 of the present invention. FIG. 20 is a configuration diagram of a synchronization signal generating circuit in Embodiment 2 of the present invention. FIG. 21 is a diagram showing one piece of sector management information written in the sector management memory 507 of the present invention. FIG. 22 is an overall configuration diagram in Embodiment 7 of the present invention. FIG. 23 is a configuration diagram of the controller 2208 according to the seventh embodiment of the present invention.

Explanation of symbols

101 Dual Resolution Digital Video Camera 102 Video Camera 103 Continuous Shooting Camera 104 Sync Signal Generator 105 Controller 106 Display Device 107 Recording / Reproducing Device 108 Controller 109 Display Device 110 PC
201 Lens 202 Aperture 203 Electronic shutter 211 Video CCD
212 A / D
213 Buffer memory 214 Mpeg encoder 215 Output interface 216 NTSC signal generation / output device 301 Lens 302 Aperture 303 Electronic shutter 311 CCD for image
312 A / D
313 Buffer memory 314 Jpeg encoder 315 Output interface 401 Clock 402 Counter 403 Counter 404 Interface 501 Interface 502 Interface 503 Interface 504 Processor 505 Program memory 506 Data memory 507 Sector management memory 508 Disk driver 509 Hard disk 510 Decoder 511 NTSC signal generation output 512 IEEE 1394 interface 601 Buffer memory 602 Jpeg decoding arithmetic chip 603 Mpeg decoding arithmetic chip 604 Buffer memory 701 Shooting start switch 702 Shooting end switch 711 Switch I / O
801 Recording start switch 802 Recording end switch 803 Playback menu selection switch 804 Playback stop fast forward rewind switch 805 I frame skip switch 806 Photo presentation switch 811 Switch I / O
920 Common controller 1011 Switch I / O
DESCRIPTION OF SYMBOLS 1101 Double resolution digital video camera 1107 Built-in recording / reproducing apparatus 1201 Double resolution digital video camera 1206 Display apparatus attached to main body 1220 Controller attached to main body 1301 Pulse emitted every 1/30 second 1302 Pulse which forms GOP Group 1303 Pulse emitted every 1/2 second 1404 Pulse emitted every 2 seconds 1501 Sector management information indicating data storage state 1502 Sector number 1503 Next recorded sector number 1601 Synchronization relation table 1602 Shooting number 1603 Shooting date 1603 Shooting date and time 1604 Sector Number 1605 Address within sector 1606 Sector number 1607 Address within sector 1701 Video 1702 GOP
1703 I frame 1704 Continuously captured still image 1705 Still image 1801 Same viewpoint same field of view double resolution digital video camera 1900 Half mirror 1901 Lens 1902 Aperture 2004 Counter 2101 Sector number 2102 Moving image data to be recorded next Address in sector to be recorded next 2103 Sector number in which still image data is to be recorded next 2104 Address in sector in which still image data is to be recorded next 2208 Controller 2307 Enlargement / reduction skip switch 2208 View scroll switch

Claims (16)

Video shooting means for shooting continuously, with excellent temporal resolution but with a small number of pixels and poor spatial resolution;
Continuous photography means that has a large number of pixels and excellent spatial resolution, but is inferior in time resolution for continuous photography,
A dual-resolution video camera, comprising: synchronous photographing means for taking a continuous picture of the continuous photograph photographing means in synchronization with a predetermined frame for photographing video by the video photographing means. The dual resolution video camera of claim 1, wherein
A dual resolution video camera comprising means for forming an optical system in which the viewpoint and field of view of images taken by the video photographing means and the continuous photograph photographing means are the same.   3. The dual resolution video camera according to claim 1, wherein shooting data to be shot by the video shooting means is compressed by Mpeg, and predetermined frames of the video shooting to be shot in synchronization with the continuous photos are recorded in the Mpeg. A dual-resolution video camera comprising synchronous photographing means for controlling timing so as to obtain a compressed I frame.   3. The dual resolution video camera according to claim 1 or 2, wherein the Mpeg compression is performed on the shooting data shot by the video shooting means, and the predetermined frame of the video shooting shot in synchronization with the continuous photo is the Mpeg. A dual-resolution video camera comprising synchronous photographing means for timing control so as to be a plurality of times of compression I frames.   3. The dual-resolution video camera according to claim 1 or 2, further comprising means for outputting each photographic data so that a synchronization relationship between the data photographed by the video photographing means and the continuous photograph photographing means is known. Features a dual resolution video camera.   3. The dual resolution video camera according to claim 1 or 2, further comprising means for storing each piece of photographed data so that a synchronization relationship between the data photographed by said video photographing means and said continuous photograph photographing means can be known. Features a dual resolution video camera. The dual resolution video camera according to claim 6,
Means for referring to the data stored so as to know the synchronization relationship, and reproducing the video imaged by the video imaging means on a display device;
When stopping the video at a desired time, video stopping means for stopping at a frame shot in synchronization with the continuous photography means;
A dual-resolution video camera comprising means for displaying a photographic image taken by the continuous photography means, which is taken in synchronization with a frame stopped by the video stop means. Video shooting means for taking pictures continuously, which has excellent time resolution but with a small number of pixels and inferior spatial resolution, and continuous photography means for taking pictures with a large number of pixels and excellent in spatial resolution but inferior in time resolution; The data output by the dual resolution video camera having the synchronous photographing means that enables the continuous photographing of the continuous photographing means to be photographed in synchronization with a predetermined frame for photographing the video by the video photographing means,
Means for storing the data so that their synchronization relationship can be understood;
Means for referring to the stored data and reproducing the video imaged by the video imaging means on a display device;
In response to an operation to stop the video shot by the video shooting means at a desired time, the video stop means stops at a frame shot in synchronization with the continuous photo shooting means,
A dual resolution data recording / reproducing apparatus comprising: means for displaying a photographic image taken by said continuous photography means in synchronization with a frame stopped by said video stop means. The dual resolution data recording / reproducing apparatus according to claim 8,
The display means includes an enlargement / reduction skip operation key and / or a view scroll operation key, and displays a photographic image taken by the continuous photography means in synchronization with a frame stopped by the video stop means. In this case, according to the operation of the enlargement / reduction skip operation key and / or the view scroll operation key, it is possible to enlarge / reduce and / or scroll the view of a photographic image having a large number of pixels and excellent spatial resolution. A dual resolution data recording / reproducing apparatus. Video shooting means for taking pictures continuously, which has excellent time resolution but with a small number of pixels and inferior spatial resolution, and continuous photography means for taking pictures with a large number of pixels and excellent in spatial resolution but inferior in time resolution; A dual-resolution video camera having a synchronous photographing unit that allows a continuous photograph of the continuous photographing unit to be photographed in synchronization with a predetermined frame for photographing a video by the video photographing unit,
Means for storing the data output from the dual resolution video camera so that the synchronization relationship between them can be understood, means for reproducing the video imaged by the video imaging means with reference to the stored data, on the display device, In accordance with the operation to stop the video shot by the video shooting means at a desired time, the video stop means stops at the frame shot in synchronization with the continuous photo shooting means, and synchronizes with the frame stopped by the video stop means. A dual-resolution video camera comprising a dual-resolution data recording / reproducing device having means for displaying photographic images taken by the continuous photography means. Video shooting means for taking pictures continuously, which has excellent time resolution but with a small number of pixels and inferior spatial resolution, and continuous photography means for taking pictures with a large number of pixels and excellent in spatial resolution but inferior in time resolution; A dual-resolution video camera having a synchronous photographing unit that allows a continuous photograph of the continuous photographing unit to be photographed in synchronization with a predetermined frame for photographing a video by the video photographing unit,
Means for storing the data output from the dual resolution video camera so that the synchronization relationship between them can be understood, means for reproducing the video imaged by the video imaging means with reference to the stored data, on the display device, In accordance with the operation to stop the video shot by the video shooting means at a desired time, the video stop means stops at the frame shot in synchronization with the continuous photo shooting means, and synchronizes with the frame stopped by the video stop means. Connected via a network to a dual resolution data recording / reproducing apparatus having means for displaying photographic images taken by the continuous photography means;
A dual resolution video camera characterized in that images of the dual resolution video camera are recorded and reproduced at a remote place. The dual resolution video camera according to claim 10 or 11,
A dual resolution video camera, characterized in that the controller of the dual resolution video camera and the controller of the dual resolution data recording / reproducing apparatus are configured as a common controller. The dual resolution video camera of claim 12,
A dual resolution video camera comprising a display device built in the dual resolution video camera. The dual resolution video camera according to any one of claims 10 to 13,
An operation key for enlargement / reduction skip and / or a view scroll operation key is provided, and enlargement / reduction skip is performed when displaying a photographic image taken by the continuous photography means in synchronization with the frame stopped by the video stop means. In accordance with the operation of the operation key and / or the visual scrolling operation key, the photographic image enlargement / reduction operation and / or the visual field scrolling operation having a large number of pixels and excellent spatial resolution can be performed. Resolution video camera. A first photographing means for photographing a first image having a small number of pixels;
A second photographing means for photographing a second image having a large number of pixels,
The second imaging unit captures the second image in accordance with a timing at which a plurality of image frames corresponding to a compression unit of the first image is captured by the first imaging unit. A dual resolution video camera. The dual resolution video camera of claim 15,
Timing generation means for generating a first timing signal and a second timing signal in which several cycles of image frames corresponding to a compression unit of the first image are longer than a cycle of the first timing signal. ,
The first photographing means photographs the first image according to the first timing signal,
The double-resolution video camera characterized in that the second photographing means photographs the second image in accordance with the second timing signal.

Images