JP4376758B2 - Video recording / reproducing method and video recording / reproducing apparatus - Google Patents

Description

  The present invention relates to a video recording / reproducing apparatus such as a video camera and a video deck capable of recording and reproducing a video signal to and from a recording medium simultaneously in parallel, and a video recording / reproducing method for such an apparatus, and more Specifically, the present invention relates to a video recording / reproducing apparatus capable of so-called chasing reproduction and a video recording / reproducing method for such an apparatus.

  In recent years, video recording / reproducing apparatuses using a randomly accessible recording medium such as a hard disk and a DVD have become widespread. In this type of apparatus, the data writing and reading speed for a hard disk, DVD, etc. used as a recording medium is sufficiently faster than the recording / reproducing speed of the video signal. For example, a TV broadcast video signal is recorded on the recording medium. At the same time, it is possible to realize a so-called chasing playback function for playing back a video signal being recorded from a certain point in time (see Patent Document 1).

On the other hand, some video recording / reproducing apparatuses as described above are configured to be able to separately record a video signal being recorded or reproduced as a still image. In particular, with the development of digital still camera technology in recent years, products capable of recording still images with sufficiently high image quality have been put into practical use in video cameras that are usually used for recording moving images. Yes. However, if a still image is shot during moving image shooting with a conventional video camera, the recording of the moving image is often adversely affected, such as being temporarily interrupted at the moment the still image is shot. In order to solve such problems, Patent Document 2 clearly separates a configuration for shooting (recording) a moving image and a configuration for shooting (recording) a still image as separate systems, An invention of a configuration that enables simultaneous shooting of a moving image and a still image is disclosed.
JP 2002-101391 A JP 2004-248156 A

  However, the invention disclosed in Patent Document 2 described above is used for both the purpose of shooting (recording) one video displayed on a monitor as a moving image and shooting (recording) as a still image. Therefore, it is necessary for the user to constantly monitor the video so as not to miss a so-called photo opportunity for shooting a still image during shooting of a moving image. Such an operation for judging the optimum moment as a still image while recording a moving image and recording it as a still image requires a high level of skill and judgment. It's difficult, and in many cases, you miss a photo opportunity. For this reason, it is possible to perform an operation of taking out a desired moment as a still image while replaying a video signal once taken as a moving image at a later date. There is a lot of waste of time because it is necessary to play back time.

  The present invention has been made in view of the circumstances as described above. During recording of a video signal (moving image), it is possible to record a still image without affecting the recording of the video signal. The main object of the present invention is to provide a video recording / playback apparatus and a video recording / playback method therefor that can be recorded as a still picture without fail, ie, without missing a photo opportunity.

  In short, the present invention records a video signal (moving image) on a recording medium and reproduces it with a delay of an appropriate time, in other words, automatically performs a follow-up reproduction with a delay of an appropriate time. For this purpose, the video signal read from the recording medium is separately recorded as a still image.

The video recording / playback method according to the present invention is an operation for recording a video signal on a recording medium, playing the video signal recorded on the recording medium for display on a display device, and accepting an operation of a still image recording instruction. Means for recording an image extracted from the video signal as a still image on the recording medium, a first video signal for displaying the video signal being recorded on the recording medium on a display device Is output as a second video signal for displaying on the display device a video signal reproduced from the recording medium with a predetermined time delay, and is stopped by the operation means. An image extracted from the second video signal displayed on the display device when an image recording instruction operation is received is recorded as a still image on the recording medium.

In such a video recording / reproducing method of the present invention, the first video signal output for displaying the video signal being recorded on the recording medium on the display device and the video signal being recorded on the recording medium are recorded from the recording medium. The second video signal reproduced with a delay of a predetermined time is output, and the image displayed when the still image recording instruction operation is accepted is recorded as a still image out of the second video signal. Recorded on the medium.

An image recording / reproducing apparatus according to the present invention records an image signal on a recording medium, reproduces the image signal recorded on the recording medium for display on a display device, and accepts an operation of a still image recording instruction. Means for recording an image extracted from the video signal as a still image on the recording medium, a video signal acquisition means for acquiring the video signal, and a video signal acquired by the video signal acquisition means. First display control means for outputting for display on a display device; video signal recording means for writing to the recording medium to record the video signal obtained by the video signal obtaining means; and recorded on the recording medium. Video signal reproducing means to read out the video signal being reproduced, and the video signal reproducing means to output the video signal read from the recording medium for display on the display device That the second display control means, and a still image recording means for writing in the recording medium to record the image extracted from the video signal as a still image, the video signal reproducing means, said video signal recording means The video signal written to the recording medium is read from the recording medium with a predetermined time delay from the time when the video signal recording means writes the recording medium, and is supplied to the second display control means. Is configured to write an image extracted from the second video signal displayed on the display device as a still image on the recording medium when the operation means accepts an operation for recording a still image. It is characterized by.

In such a video recording / reproducing apparatus according to the present invention, the first display control means outputs the video signal acquired by the video signal acquisition means on the display device, and the video signal recording means writes it on the recording medium. Record by. The video signal reproducing means reads out the video signal written on the recording medium by the video signal recording means from the recording medium in order to display the video signal on the display device with a predetermined time delay from the time when the video signal recording means writes it on the recording medium. Of the video signals read out from the recording medium by the video signal reproducing means, the image displayed at the time when the still image recording instruction operation is accepted is displayed by the still image recording means. Write to the recording medium as a picture.

  The video recording / reproducing apparatus according to the present invention is the video recording / reproducing apparatus according to the present invention, wherein the recording medium is a moving image recording medium for the video signal recording means to write a video signal, and the still image recording means is stationary. And a still image recording medium for writing an image.

  In such a video recording / reproducing apparatus according to the present invention, in the above video recording / reproducing apparatus invention, the video signal recording means writes the video signal to the moving picture recording medium, and the still picture recording means is a still picture recording medium. Write.

  The video recording / reproducing apparatus according to the present invention is the above-described video recording / reproducing apparatus, wherein the first display control means displays a video signal as the display device, and the second display. The control means includes a second display device for displaying a video signal.

  In such a video recording / reproducing apparatus according to the present invention, in the video recording / reproducing apparatus described above, the first display control means displays the video signal on the first display apparatus, and the second display control means is the second. The video signal is displayed on the display device.

  Furthermore, the video recording / reproducing apparatus according to the present invention is the above video recording / reproducing apparatus, wherein the video signal displayed by the first display control means and the video signal displayed by the second display control means are on one screen. A video signal synthesizing unit for synthesizing the images so as to be displayed in parallel is provided.

  In such a video recording / reproducing apparatus according to the present invention, the video signal displayed by the first display control means and the video signal displayed by the second display control means are synthesized in the video recording / reproducing apparatus invention described above. They are displayed side by side on the screen of one display device.

  Still further, the video recording / reproducing apparatus according to the present invention is the video recording / reproducing apparatus according to any one of the above aspects, wherein the video signal acquisition means includes an optical system for acquiring an optical image and an optical image acquired by the optical system. And a video signal generating means for generating a video signal.

  In such a video recording / reproducing apparatus according to the present invention, a video signal is generated from the optical image acquired by the optical system in the invention of any one of the video recording / reproducing apparatuses described above, and is input from the video signal input means.

  Furthermore, the video recording / reproducing apparatus according to the present invention is characterized in that, in the invention of any one of the above video recording / reproducing apparatuses, the video signal acquisition means is a TV tuner for receiving a TV broadcast.

  In such a video recording / reproducing apparatus according to the present invention, a video signal is obtained from a TV tuner that receives a TV broadcast in the invention of any one of the above video recording / reproducing apparatuses.

  Furthermore, the video recording / reproducing apparatus according to the present invention is characterized in that, in the invention of any one of the above video recording / reproducing apparatuses, the video signal acquisition means is an input terminal for inputting a video signal.

  In such a video recording / reproducing apparatus according to the present invention, the video signal is acquired from the input terminal for inputting the video signal in the invention of any one of the video recording / reproducing apparatuses described above.

  According to the video recording / reproducing method and apparatus of the present invention as described above, a still image can be recorded from the second video signal reproduced with a predetermined time delay from the first video signal. The still image can be recorded without affecting the first video signal being recorded on the recording medium.

  According to the video recording / reproducing apparatus of the present invention, in the above video recording / reproducing apparatus, the moving image is recorded on the moving image recording medium and the still image is recorded on the still image recording medium. As a result, it is possible to use a removable recording medium.

  Furthermore, according to the video recording / reproducing apparatus of the present invention, in the above video recording / reproducing apparatus, the first video signal is displayed on the first display device, and the second video signal is displayed on the second display device. Therefore, after confirming the moment when the video displayed on the first display device is desired to be recorded as a still image, it is possible to record the still image from the video displayed on the second display device. There is less risk of missing a photo opportunity when recording a still image.

  Furthermore, according to the video recording / reproducing apparatus of the present invention, in the above video recording / reproducing apparatus, the video signal displayed by the first display control means and the second display control means are displayed on the screen of one display device. Since the video signals to be synthesized are combined and displayed in parallel, it is possible to record a still image from the reproduced video after confirming the video being recorded on one display device.

  Furthermore, according to the video recording / reproducing apparatus of the present invention, in any one of the video recording / reproducing apparatuses described above, the video signal can be acquired by generating a video signal from the optical image acquired by the optical system. Therefore, it can be realized as a video camera.

  Furthermore, according to the video recording / playback apparatus of the present invention, in any one of the video recording / playback apparatus inventions described above, the video signal can be obtained from the TV tuner, so that it can be realized as a video deck. become.

  Furthermore, according to the video recording / playback apparatus of the present invention, in any one of the video recording / playback apparatus inventions described above, the video signal can be obtained from the input terminal, so that it is realized as a video camera or a video deck. The same effect as described above can be obtained by inputting a video signal from the outside to the video recording / reproducing apparatus according to the present invention.

  Hereinafter, the present invention will be described in detail with reference to the drawings showing embodiments thereof. FIG. 1 is a schematic perspective view showing the appearance of a video camera as an embodiment of a video recording / reproducing apparatus according to the present invention. FIG. 1 (a) is from the left rear and FIG. 1 (b) is from the left front. Each state is shown. The video signal recording / reproducing apparatus according to the present invention can be realized not only as a video camera but also as a video deck as described later.

  The video camera 1 as the video recording / reproducing apparatus according to the present invention is similar in appearance to a general video camera, and the objective lens 11L of the optical system 11 is exposed at the upper front end, and the upper rear end. Is provided with a viewfinder 19. Further, a monitor 18 using a liquid crystal display panel is attached to the left side portion so as to be openable and closable by being pivotally supported with respect to the main body at the front end portion. Reference numeral 18S denotes a screen of the monitor 18, and 19S denotes a screen of the viewfinder 19. Reference numeral 20 denotes a speaker for reproducing sound.

  Further, on the left side surface of the video camera 1 exposed when the monitor 18 is opened, the user operates the video camera 1 and performs various settings (including settings such as a moving image mode and a still image mode described later). For this purpose, an operation unit 25 provided with various switches, buttons and the like necessary for the operation is provided. Further, a moving image shooting button 25M for shooting a moving image is provided on the back of the video camera 1, and a still image shooting button 25S for shooting a still image is also provided on the upper part. The arrangement positions of the operation unit 25, the moving image shooting button 25M, the still image shooting button 25S, and the like are merely examples, and may be included in other portions of the video camera 1.

  The moving image shooting button 25M is a button for shooting and recording a video signal as a moving image by being turned on (specifically, being pressed by the user) when the moving image mode is set. It is also possible to lock. The still image shooting button 25S is turned on (specifically, pressed by the user) when the still image mode is set, so that the video signal at that time is shot and recorded as a still image. Although it is a button and cannot be locked in the ON state, so-called continuous shooting at a predetermined time interval is possible by continuing the ON operation.

  Further, when the moving image mode is set and the moving image shooting button 25M is turned on, that is, when the image signal is recorded as a moving image, the still image shooting button 25M is turned on as a still image. The fact that it can be recorded is the same as that of a conventional device of this type. However, in this type of conventional apparatus, when recording a still image during moving image shooting, that is, while recording a video signal as a moving image, the video signal being recorded as a moving image is recorded as a still image. Then, as will be described in detail later, the video signal once recorded as a moving image is delayed for a predetermined time, and the reproduced video signal is recorded as a still image.

  Note that a still image memory 21M, which is a recording medium for still images, is mounted near the lower left portion of the back of the video camera 1. Specifically, the still image memory 21M is a non-volatile recording medium that can be attached to and detached from a reader / writer as a still image recording unit 21R (see FIG. 2) built in the video camera 1, such as a stick or card. A semiconductor memory, an ultra-small hard disk drive, and the like are mounted in a state of being inserted into a reader / writer slot provided on the back of the video camera 1. Needless to say, the still image memory 21M can be detached from the video camera 1 when the user presses an eject button (not shown). However, it may be configured to be used also as a randomly accessible moving image recording medium 23 (see FIG. 2) such as a hard disk drive described later without providing the still image memory 21M.

  FIG. 2 is a block diagram showing an internal configuration example of the video camera 1 as the video recording / reproducing apparatus according to the present invention shown in FIG. The video recording / playback apparatus according to the present invention whose internal configuration is shown in FIG. 2 is configured as a so-called digital video camera 1, but the processing after acquiring the video signal is basically the same as that of the video deck. Therefore, the video recording / reproducing apparatus according to the present invention can be configured not only as a video camera but also as a video deck. In the block diagram shown in FIG. 2, the video / audio signal is indicated by a solid line and the control signal is indicated by a broken line.

  The internal configuration of the video camera 1 is roughly divided into a photographing system, a recording / reproducing system, and a control system. The photographing system includes an optical system 11, a camera signal processing unit 12, an NTSC (PAL) signal processing unit 13, a monitor 18, a viewfinder 19, a speaker 20, and the like.

  The optical system 11 inputs an optical image of a subject from the objective lens 11L in order to capture a video, acquires an analog video signal by an imaging device 11D such as a CCD, and outputs the analog video signal to the camera signal processing unit 12. It is. The camera signal processing unit 12 converts an analog video signal output from the optical system 11 into a digital video signal, and also converts an analog audio signal input from a microphone (not shown) into a digital audio signal for digital video / audio. Output as a signal.

  The NTSC (PAL) signal processing unit 13 includes two internal circuits. The first system converts the digital video signal output from the camera signal processing unit 12 into an NTSC (or PAL) analog composite signal, and converts the digital audio into an analog audio signal to convert the viewfinder. It functions as a first display control means for outputting to the display 19. As will be described later, the other system of the NTSC (PAL) signal processing unit 13, that is, the second system, converts the reproduced video read from the recording medium 23 into an NTSC (or PAL) analog composite signal. At the same time, the digital audio signal is converted into an analog audio signal and output to the monitor 18 to function as a first display control means.

  The viewfinder 19 as the first display device and the monitor 18 as the second display device display the NTSC (PAL) analog composite signal converted and output by the NTSC (PAL) signal processing unit 13. The speaker 20 outputs an analog audio signal converted and output by the NTSC (PAL) signal processing unit 13. It should be noted that audio is reproduced from the speaker 20 during recording of a video signal, such as a moving image mode (a mode in which a video signal is captured as a moving image) and a still image mode (a mode in which a video signal is captured as a still image) described later. I can't.

  The recording / reproducing system includes a video / audio encoding unit 14, a video / audio decoding processing unit 15, a recording buffer 16, a reproducing buffer 17, an optical pickup 22, and a moving image recording medium 23 composed of a hard disk drive. Has been. The recording medium 23 is not limited to a hard disk drive, and may be any randomly accessible recording medium. For example, a combination of a DVD drive and a DVD may be used. In particular, when a DVD drive and a DVD are combined and used as a moving image recording medium 23, the DVD itself as a recording medium is used as a video camera even if it is used as a still image memory 21M that is a still image recording medium. 1 can be taken out.

  The video / audio encoding unit 14 is a control unit based on an encoding method such as MPEG2 for recording a digital video signal among the digital video / audio signals output from the camera signal processing unit 12 on the recording medium 23. The digital audio signal is encoded according to the control signal from the control unit 24 by an encoding method such as PCM for recording the digital audio signal on the recording medium 23 and output to the recording buffer 16. . The recording buffer 16 once buffers the encoded video / audio signal output from the encoded video / audio encoding unit 14 and then outputs it to the optical pickup 22.

  The optical pickup 22 writes and records the encoded video / audio signal buffered in the recording buffer 16 on the recording medium 23 according to the control signal from the control unit 24, and conversely, the code recorded on the recording medium 23. The video / audio signal is read and reproduced according to the control signal from the control unit 24 and output to the video / audio decoding processing unit 15.

  The reproduction buffer 17 buffers the encoded video / audio signal read from the recording medium 23 by the optical pickup 22 and then outputs it to the video / audio decoding processing unit 15. The video / audio decoding processing unit 15 decodes the encoded video / audio signal buffered in the reproduction buffer 17 into a digital video / audio signal in accordance with a control signal from the control unit 24, and an NTSC (PAL) signal processing unit. 13 to output. Note that the NTSC (PAL) signal processing unit 13 includes two internal circuits as described above, and the second system is a digital video / audio signal output from the video / audio decoding processing unit 15. Process.

  Since the digital video / audio signal decoded by the video / audio decoding processing unit 15 is supplied to the NTSC (PAL) signal processing unit 13 described above, the encoded video / audio signal read from the recording medium 23 is also final. Specifically, it is displayed on the monitor 18 and the viewfinder 19 and can be reproduced and output from the speaker 20.

  Furthermore, the video camera 1 is provided with a still image recording unit 21R for recording a still image in the still image memory 21M. The still image memory 21M and the still image recording unit 21R may be built in the apparatus as an integrated configuration. However, as described above, the still image memory 21M is attached to and detached from the still image recording unit 21R such as a reader / writer. It is desirable to be a portable stick-like or card-like recording medium. The still image recording unit 21R is connected to the NTSC (PAL) signal processing unit 13, and in accordance with a control signal from the control unit 24, the NTSC system (or PAL system) for one frame converted by the NTSC (PAL) signal processing unit 13 is used. ) Analog composite signal is recorded as still image data in the still image memory 21M.

  Therefore, the still image memory 21M can record the same image as the image displayed on the monitor 18 or the viewfinder 19 when the control signal from the control unit 24 is given as a still image. At this time, the still image recording unit 21R encodes an NTSC (or PAL) analog composite signal for one frame supplied from the NTSC (PAL) signal processing unit 13 by a compression encoding method such as the JPEG method. To the still image memory 21M.

  The control unit 24 is a microprocessor with a built-in ROM, RAM, and the like, and controls each component of the video camera 1 described above according to a control program pre-recorded in the ROM, and needs to be temporarily generated and stored therebetween. Various data are temporarily stored in the RAM. The operation unit 25 includes various switches and buttons necessary for the user to operate the video camera 1. In response to the operation of the operation unit 25 by the user, the control unit 24 controls the video camera 1 according to a control program stored in the ROM.

  Next, the operation of the video camera 1 as the video recording / reproducing apparatus according to the present invention configured as described above will be described with reference to the flowchart of FIG.

  When the video camera 1 is powered on, the control unit 24 controls the camera signal processing unit 12, the NTSC (PAL) signal processing unit 13, and the viewfinder 19, thereby obtaining an analog video signal acquired by the optical system 11. In addition, an analog audio signal input from a microphone (not shown) is converted into digital data by the camera signal processing unit 12 and converted to an NTSC (or PAL) analog composite signal by the NTSC (PAL) signal processing unit 13. The image is converted and displayed on the viewfinder 19 (step S11). In this case, the audio signal input from the microphone is not reproduced from the speaker 20.

  The video camera 1 is provided with a moving image mode and a still image mode as shooting modes, and either mode is set by the user operating the operation unit 25. When the still image mode is set (NO in step S12), the following conventionally known still image mode processing is performed (step S13). That is, when the still image shooting button 25S of the operation unit 25 is operated, a control signal is given from the control unit 24 to the still image memory 21M, so that the view is output from the NTSC (PAL) signal processing unit 13 at that time. A signal for one frame of the image displayed on the finder 19 is output to the still image memory 21M and recorded.

  When the moving image mode is set (YES in step S12), the control unit 24 waits until the moving image shooting button 25M of the operation unit 25 is turned on (NO in step S14). When the moving image shooting button 25M is turned on (YES in step S14), the control unit 24 controls the video / audio encoding unit 14 and the optical pickup 22 to thereby output the digital video output from the camera signal processing unit 12. The video / audio encoding unit 14 encodes the signal and the audio signal, and the optical pickup 22 is started to write (record) the encoded video / audio signal to the recording medium 23 (step S15).

  Thereafter, when the moving image shooting button 25M is turned off within a predetermined time (NO in step S17, YES in S16), recording of the video signal on the recording medium 23 is stopped (step S22). The processes after step S22 will be described later.

  If the predetermined time elapses without moving image button 25M being turned off (while being turned on) (NO in step S16, YES in S17), control unit 24 performs video / audio decoding processing unit 15, optical pickup 22, and NTSC (PAL). By giving a control signal to the signal processing unit 13, a process of reproducing the recorded part of the video signal being recorded on the recording medium in real time from the beginning and displaying it on the monitor 18 is started (step S18). Specifically, the optical pickup 22 records the encoded video / audio signal buffered in the recording buffer 16 onto the recording medium 23, and the video / audio signal encoded from the recording medium 23. Are read out and buffered in the reproduction buffer 17 in a time-sharing manner.

  The encoded video / audio signal buffered in the reproduction buffer 17 in this way is decoded into a digital video / audio signal by the video / audio decoding processing unit 15 and then sent to the NTSC (PAL) signal processing unit 13. Is output. The NTSC (PAL) signal processing unit 13 converts the digital video / audio signal output from the video / audio decoding processing unit 15 into an NTSC (or PAL) analog composite signal and displays it on the monitor 18. Note that the decoding process of the video / audio signal by the video / audio decoding processing unit 15 is performed by the control unit 24 so as to be delayed by a predetermined time on the time axis with the video / audio signal encoded by the video / audio encoding unit 14. Be controlled.

  Accordingly, when the moving image shooting button 25M is operated in the on state when the moving image mode is set, the video signal acquired by the optical system 11 is displayed on the viewfinder 19 and recorded on the recording medium 23, and thereafter When the predetermined time elapses, the image being recorded starts to be reproduced in real time from the beginning and displayed on the monitor 18. As a result, the video being recorded is displayed on the viewfinder 19, and the video being recorded is displayed on the monitor 18 with a delay of a predetermined time.

  In this manner, the video being recorded is displayed on the viewfinder 19 and the video of a predetermined time before the video being recorded is displayed on the monitor 18. FIG. 4 is a schematic diagram showing a display state of the viewfinder 19 and the monitor 18. As shown in the schematic diagram of FIG. 4A, the animal is already out of the frame in the image being recorded displayed on the screen 19S of the viewfinder 19, but as shown in the schematic diagram of FIG. In addition, in the reproduced video displayed on the screen 18S of the monitor 18, the state before the predetermined time of the video being recorded is displayed. Therefore, the user checks the video being recorded displayed on the viewfinder 19 to confirm the video scene to be recorded as a still image, and the same scene is displayed on the monitor 18 after a predetermined time. When the still image shooting button 25S of the operation unit is turned on at the time of display, the still image is recorded in the still image memory 21M as a still image. In this way, after confirming a scene desired to be recorded as a still image by the video being recorded displayed on the viewfinder 18, the user records the still image as a video displayed with a predetermined delay on the monitor 18. Thus, the user can be released from the tension of constantly monitoring the scene to be recorded as a still image, and can record the still image without missing a photo opportunity.

  Specifically, in step S18, after the video being shot begins to be reproduced on the monitor 18 with a predetermined delay, the control unit 24 determines whether or not the moving image shooting button 25M is turned off and the still image shooting button 25S is turned on. It is monitored whether or not it has been operated (NO in step S19, NO in S20). When the moving image shooting button 25M is turned off (YES in step S19), the control unit 24 moves the process to the above-described step S22, and the subsequent processes will be described later. When the still image shooting button 25S is turned on without the moving image shooting button 25M being turned off (NO in step S19, YES in S20), the video / audio decoding processing unit 15 reads the control unit 24 from the recording medium 23 (playback). Then, the NTSC (PAL) signal processing unit 13 converts the image signal displayed on the monitor 18 after being converted into an NTSC (or PAL) analog composite signal, and gives a control signal to the still image recording unit 21R. As a result, it is recorded in the still image memory 21M (step S21).

  Thereafter, the control unit 24 returns to the process of monitoring whether or not the moving image shooting button 25S in steps S19 and S20 is turned off and whether or not the still image shooting button 25S is turned on, as described above, and the still image shooting button 25S. When is turned on, the still image is recorded in the still image memory 21M in the same manner as described above.

  When the moving image shooting button 25M is eventually turned off (YES in step S19), the control unit 24 stops recording the video on the recording medium 23 by giving a control signal to the video / audio encoding unit 14 and the optical pickup 22. (Step S22). However, after this time, until the end of the video signal recorded on the recording medium (when recording is stopped) is reproduced, in other words, from when the moving image shooting button 25M is turned off until a predetermined time has elapsed. (NO in step S23), the readout (reproduction) of the video signal by the optical pickup 22 and the video / audio decoding processing unit 15 is continued, and the reproduced video is transmitted to the NTSC system (or PAL) by the NTSC (PAL) signal processing unit 13. System) analog composite signal and displayed on the monitor 18.

  Therefore, during this period, as described above, the control unit 24 monitors whether or not the still image shooting button 25S is turned on (NO in step S24), and when the still image shooting button 25S is turned on (step S24). YES), the video currently displayed on the monitor 18 is recorded as a still image in the still image memory 21M (step S25). Then, when a predetermined time has elapsed since the moving image shooting button 25M was turned off (YES in step S23), the reproduction of the video signal to the monitor 18 is automatically stopped, and the control unit 24 proceeds to step S11. To return.

  FIG. 5 is a block diagram showing an example of the internal configuration of another embodiment of the video recording / reproducing apparatus according to the present invention, which is an example applied to a video camera as in the above-described embodiment.

  In the example shown in FIG. 5, the video signal output from the NTSC (PAL) signal processing unit 13 to the monitor 18 and the video signal output to the viewfinder 19 are input and displayed in parallel on the screen 18S of the monitor 18. A synthesizing circuit 31 is provided. Other configurations are the same as those in the block diagram of the embodiment shown in FIG.

  The synthesis circuit 31 can display the video signal being recorded on the viewfinder 19 and the reproduced video on the monitor 18 by the control signal supplied from the control unit 24, as in the above-described embodiment. Of course, the video signal being recorded and the reproduced video signal can be combined into one screen and displayed in parallel on the screen 18S of the monitor 18.

  FIG. 6 is a schematic diagram showing a state in which the video signal being recorded and the reproduced video signal are displayed in parallel on the screen 18S of the monitor 18 by the combining circuit 31 shown in FIG. In this example, the image being recorded is displayed relatively small at a position near the right side of the screen 18S of the monitor 18 as indicated by reference numeral 18S1, and similarly at a position near the left side as indicated by reference numeral 18S2. The playback image is displayed relatively large. In the example shown in FIG. 6, in consideration of user convenience, “recording” is recorded for the video 18S1 being recorded, and “playing” and “for still image capture” are recorded for the playback video 18S2. The display to call out is displayed.

  As described above, when the video signal being recorded and the reproduced video signal are displayed in parallel on the screen 18S of the monitor 18, the user only needs to look at the screen 18S of the monitor 18, so that, for example, the video camera 1 This is very convenient when shooting with the camera attached to a tripod.

  In the example shown in FIG. 6, the video being recorded (recording) is displayed in a small size and the video for recording a still image (reproduced video) is displayed in a large size. In addition, instead of displaying characters such as “Recording”, a mark (red circle) indicating “recording” or a mark (right-pointing triangle) meaning playback is generally used for this type of apparatus. You may make it display. Needless to say, a screen in which the video signal being recorded and the reproduced video signal displayed on the screen 18S of the monitor 18 may be displayed in parallel on the screen 19S of the viewfinder 19.

  By the way, in the video recording / reproducing apparatus according to the present invention, the optical system 11 as the video signal acquisition means is replaced with, for example, a TV tuner, and the output of two video signals from the NTSC (PAL) signal processing unit 13 is output by the synthesis circuit 31. If it is configured so that it can be synthesized and output from the video output terminal to the monitor device, and the audio signal output from the NTSC (PAL) signal processing unit 13 can be output from the audio output terminal to the monitor device or a single speaker, TV broadcasting It is realized as a video deck.

  FIG. 7 is a block diagram showing an internal configuration example when the video recording / reproducing apparatus according to the present invention is realized as a video deck for TV broadcasting, and is the same configuration as the configuration example of the video camera shown in FIG. 1 or FIG. The description is omitted by giving the same reference numerals to the elements.

  In the example shown in FIG. 7, a TV tuner 111 is provided instead of the optical system 11 in the video camera, and a TV signal processing unit 121 is provided instead of the camera signal processing unit 12. Also, the output of the two video signals from the NTSC (PAL) signal processing unit 13 is synthesized by the synthesis circuit 31 so as to be displayed in parallel on one screen and supplied to the video signal output terminal 32. The audio signal output from the NTSC (PAL) signal processing unit 13 is supplied to the audio signal output terminal 33.

  Therefore, if the video signal input terminal of the monitor device or TV set is connected to the video signal output terminal 32 and the speaker is directly connected to the audio signal output terminal 33 or the audio input terminal of the TV set is connected, FIG. The video recording / reproducing apparatus of the present invention shown in the figure functions as a video deck. When such a video recording / playback apparatus of the present invention is realized as a video deck for TV broadcasting, the user can record video signals being recorded displayed in parallel on the display screen of the monitor device or TV set, in other words, When a TV program is received and a program is viewed on a screen that is displayed in real time, and there is a scene that you want to record as a still image, the timing is displayed on the screen of the playback video that is displayed with the TV broadcast delayed by a predetermined time. What is necessary is just to record a still image.

  When the video recording / playback apparatus according to the present invention is realized as a video deck for TV broadcasting as described above, the screen displayed in real time after receiving the TV broadcast is relatively large, and the TV broadcast is predetermined. It is preferable to make the screen of the reproduced video displayed with time delay relatively small. Of course, it is needless to say that the user can arbitrarily set the size of both screens by operating the operation unit 25.

  In the configuration example shown in FIG. 7 described above, input from the TV tuner 111 is processed, but in addition to the TV tuner, other video decks (tape system, hard disk system, DVD system, etc.), cables Needless to say, an input terminal for inputting a video signal and an audio signal from a television set, a set box for receiving CS broadcasts, or the like may be provided. Furthermore, it goes without saying that the configuration example shown in FIG. 7 is also applicable to a personal computer having a TV broadcast reception function.

  As described in detail above, when the video recording / playback apparatus according to the present invention is realized as a video camera, the video being shot by the video camera is displayed on the viewfinder, and the video is played back on the monitor with a predetermined delay. Therefore, if there is a scene to be recorded as a still image in the video displayed on the viewfinder, the still image can be recorded from the video that is reproduced and displayed on the monitor after a predetermined time has elapsed. Therefore, it is possible to record a still image without adversely affecting the recording of the video being shot and without having to miss a photo opportunity by checking the video being recorded and calming down from the video that is being played back and displayed. become.

  Similarly, when the video recording / playback apparatus according to the present invention is realized as a video deck, a TV broadcast video and a video delayed by a predetermined time are displayed on one monitor in real time. When there is a scene to be recorded, a still image can be recorded from a video reproduced and displayed on the same monitor after a predetermined time has elapsed. Therefore, it is possible to record a still image without adversely affecting the recording of the video being broadcast, and from the video reproduced and displayed after confirming the video being broadcast.

1 is a schematic perspective view showing the appearance of a video camera as an embodiment of a video recording / reproducing apparatus according to the present invention. It is a block diagram which shows the example of an internal structure of the video camera as a video recording / reproducing apparatus based on this invention. It is a flowchart which shows the process sequence by the control part for demonstrating operation | movement of the video camera as a video recording / reproducing apparatus based on this invention. It is a schematic diagram which shows the display state of the viewfinder and monitor of a video camera as a video recording / reproducing apparatus according to the present invention. It is a block diagram which shows the example of an internal structure of other embodiment of the video recording / reproducing apparatus based on this invention apparatus, and is an example applied to the video camera like the above-mentioned embodiment. It is a schematic diagram which shows the state which displayed in parallel the video signal in recording and the reproduction | regeneration video signal on the screen of the monitor by the synthetic | combination circuit of other embodiment of the video recording / reproducing apparatus based on this invention apparatus. It is a block diagram which shows the example of an internal structure at the time of implement | achieving the video recording / reproducing apparatus based on this invention as a video deck for TV broadcasting.

Explanation of symbols

1 Video Camera 11 Optical System 13 NTSC (PAL) Signal Processing Unit 14 Video / Audio Coding Unit 15 Video / Audio Decoding Unit 18 Monitor 19 Viewfinder 21R Still Image Recording Unit 21M Still Image Memory 22 Optical Pickup 24 Control Unit 25 Operation Unit 31 combining unit 32 video signal output terminal 33 audio signal output terminal 111 TV tuner

Claims (8)

The video signal is recorded on a recording medium, and the video signal recorded on the recording medium is reproduced to be displayed on a display device, and has an operation means for receiving a still image recording instruction operation, and is extracted from the video signal. In a video recording / reproducing apparatus for recording an image to be recorded on the recording medium as a still image ,
Outputting a video signal being recorded on the recording medium as a first video signal for display on a display device;
Outputting a video signal that is being recorded on the recording medium, reproduced from the recording medium with a predetermined delay, as a second video signal for display on a display device;
An image extracted from the second video signal displayed on the display device when a still image recording instruction operation is accepted by the operation means is recorded as a still image on the recording medium. Recording and playback method. The video signal is recorded on a recording medium, and the video signal recorded on the recording medium is reproduced to be displayed on a display device, and has an operation means for receiving a still image recording instruction operation, and is extracted from the video signal. In a video recording / reproducing apparatus for recording an image to be recorded on the recording medium as a still image ,
Video signal acquisition means for acquiring a video signal;
First display control means for outputting the video signal acquired by the video signal acquisition means for display on a display device;
Video signal recording means for writing to the recording medium in order to record the video signal acquired by the video signal acquisition means;
Video signal reproducing means for reading out the video signal recorded on the recording medium;
Second display control means for outputting the video signal read from the recording medium by the video signal reproducing means for display on a display device;
A still image recording means for writing to the recording medium in order to record an image extracted from the video signal as a still image ,
The video signal reproducing means reads the video signal written on the recording medium by the video signal recording means from the recording medium after a predetermined time delay from the time when the video signal recording means writes the video signal on the recording medium. 2 to the display control means,
The still image recording means writes an image extracted from the second video signal displayed on the display device at the time when an operation of a still image recording instruction is accepted by the operation means to the recording medium as a still image. A video recording / reproducing apparatus characterized by that.   The recording medium includes a moving image recording medium for the video signal recording means to write a video signal, and a still image recording medium for the still image recording means to write a still image. Item 3. The video recording / reproducing apparatus according to Item 2.   As the display device, the first display control means includes a first display device that displays a video signal, and the second display control means includes a second display device that displays a video signal. The video recording / reproducing apparatus according to claim 2 or 3.   Video signal synthesizing means for synthesizing the video signal displayed by the first display control means and the video signal displayed by the second display control means so as to be displayed in parallel on one screen is provided. The video recording / reproducing apparatus according to claim 2 or 3.   6. The video signal acquisition unit according to claim 2, further comprising: an optical system that acquires an optical image; and a video signal generation unit that generates a video signal from the optical image acquired by the optical system. The video recording / reproducing apparatus as described in any one.   6. The video recording / reproducing apparatus according to claim 2, wherein the video signal acquisition unit is a TV tuner that receives a TV broadcast.   6. The video recording / reproducing apparatus according to claim 2, wherein the video signal acquisition unit is an input terminal for inputting a video signal.

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