JP2001218156A - Image recording and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image recording and reproducing device by which a user can extract one still picture preferred by the user among a plurality of recorded still pictures and fully appreciate it. SOLUTION: In the case of executing a consecutive shot recording function, an index image generating circuit 116 generates an index image on the basis of consecutive shot still pictures in parallel with recording of a plurality of the consecutive shot still pictures onto a magnetic tape 101 by a recording signal processing circuit 108. A user selects a representative still picture among the index images displayed on a display section 110. A controller 113 controls to records a representative still picture pack to sub code sectors of a tape on which the selected representative still picture is recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image recording / reproducing apparatus for recording and reproducing a still image or the like on a tape-shaped recording medium such as a magnetic tape, and more particularly to an image recording / reproducing apparatus having a continuous shooting function. The present invention relates to an apparatus for improving a reproduction operation.

[0002]

2. Description of the Related Art In recent years, in an image recording / reproducing apparatus for a tape-shaped recording medium (hereinafter, referred to as a magnetic tape) such as a video camera, there is a need for not only a moving image recording / reproducing function but also a still image recording / reproducing function. Became higher. In particular, in a consumer digital VCR (hereinafter referred to as DV), which has recently become the mainstream of home video cameras, high image quality and high functionality have been realized, and a still image recording / reproducing function has become an essential function. ing.

In order to meet this need, a conventional image recording / reproducing apparatus uses a one-frame image taken by a video camera or the like as a still image on a magnetic tape, for example, a 7-frame image.
It repeats over the tape section of the order of seconds, that is, the same image is continuously recorded. This takes into account the convenience of the user in reproducing the still image recorded on the magnetic tape, and records the time during which the user can sufficiently appreciate the still image in normal reproduction.

[0004] In this still image recording, it can be effectively used when taking a commemorative photograph or scenery. However, it is difficult to press the operation button for recording a still image particularly for a moving subject, so that it is difficult to use it later. When I tried to reproduce it, I often experienced failures such as recording of a still image that deviated from the timing intended by the user. In addition, once the operation button for recording a still image is pressed, an instruction from a new user is not valid until the recording of the still image is completed (about 7 seconds). However, there is an inconvenience that recording of a still image becomes impossible, for example, when a more optimal timing comes immediately after pressing the operation button.

In order to solve these problems, an image recording / reproducing apparatus such as a video camera equipped with a continuous image recording function has been developed recently. As an example, the continuous shooting function is a function of continuously recording a still image on a magnetic tape while updating a still image at 0.7-second intervals while the user keeps pressing the operation button for recording a still image. With this function, the user can obtain a favorite still image from the magnetic tape from a plurality of continuously-recorded still images by using a frame advance reproduction function or the like after recording.

Here, an outline of the DV standard will be described. FIG. 7 is a diagram schematically showing a track pattern, wherein 1 indicates a magnetic tape as a tape-shaped recording medium, arrow 2 indicates the direction in which the tape runs, and arrow 3 indicates that the head scans over the magnetic tape 1. 4 indicates the direction and ITI (Insert a
5 is an audio sector, 6 is a video sector, and 7 is a subcode sector.
In the case of the 525/60 system, one frame of video / audio data is composed of 10 tracks, and the track numbers are 0 to 9.

Each area has a sync block unit. The number of valid sync blocks is 14 sync blocks per track in the audio sector, and 149 in the video sector.
In a sync block and a subcode sector, there are 12 sync blocks. One sync block is 90 bytes in the audio and video sectors, and 12 in the subcode sector.
It becomes bytes.

FIG. 8 is a diagram schematically showing the structure of a video sector. Effective areas of the video sector are sync block numbers 19 to 167. Reference numeral 11 denotes an area in which a predetermined sync pattern is recorded, which is 2 bytes for each sync block. Reference numeral 12 denotes an area where ID data is recorded, which is 3 bytes for each sync block. 1
Reference numeral 3 denotes an area in which VAUX (auxiliary data relating to video data) is recorded.
77 bytes of data are recorded in 0 and 156 sync blocks.

Reference numeral 14 denotes video data, and 77 bytes of data are recorded in sync blocks having sync block numbers 21 to 155, respectively. Reference numeral 15 denotes a parity for error correction. The parity is recorded in the last eight bytes of each sync block and the area of sync block numbers 157 to 167.

The area where VAUX is recorded is 77 bytes per sync block, but the data to be recorded has a pack structure in which 5 bytes constitute one pack.
Actually, 75 bytes (= 15 packs) are used, and 45 packs can be recorded per track.

In the case of the track having an odd track number, the first six packs of the VAUX area of the sync block number 19 are provided.
The latter six packs of the VAUX area of the sync block number 156 are set as the main area, and predetermined packs are written. The VAUX area other than the main area is an optional area, and a pack can be freely written in principle. The optional area is 39 packs per track, thus 390 packs per frame.

FIG. 9 is a diagram schematically showing the structure of a subcode sector. Reference numeral 21 denotes an area in which a predetermined sync pattern is recorded, which is 2 bytes for each sync block. 22 is an area where ID data is recorded,
Each sync block has 3 bytes. Reference numeral 23 denotes an area in which subcode data is recorded. The area is 5 bytes per sync block. This area also has a pack structure like VAUX, so that each sync block has one pack. 24 is a parity for error correction.

In the sub-code data, areas having sync block numbers of 3, 4, 5, 9, 10, and 11 are main areas, in which information such as time code and recording date and time is recorded, and the remaining areas are recorded. Is an optional area, in which packs can be freely recorded in principle. Of the 10 tracks constituting one frame, in the first five tracks, the same pack for each track is rearranged and recorded repeatedly.
Similarly, the same packs are rearranged and recorded repeatedly in the latter five tracks.

FIG. 10 shows a method of recording the subcode data. The optional area is shown in katakana, the main area is shown in hiragana, and the same pack is recorded where the same kana is added. Twelve types of packs can be recorded in the optional area per frame.

[0015] The DV standard includes MIC (Memory In Memory).
There is a non-volatile memory attached to the cassette that stores the magnetic tape, and the TOC (Table Of
Contents) It is possible to manage information and the like. The memory mounted on the cassette includes a power supply, G
It has four terminals: ND, clock, and data, and performs 2-wire serial communication. The communication protocol uses I2C. For recording data in the memory, a pack structure is used in the same manner as subcode data and VAUX, and the main area in which predetermined data must be recorded is the first 16 bytes of the memory. It is an optional area, and you can record packs freely in principle.

The above is a brief description of the DV standard. For details, see "Specification of Consumer-Use Digital VCRs usi" issued by HD DIGITAL VCR CONFERENCE.
ng 6.3mm magnetic tape ".

[0017]

The conventional image recording / reproducing apparatus is configured as described above. By continuously recording a still image in a short time unit, it is possible to effectively take a photo opportunity for a moving subject. However, there is an advantage that a user can obtain a favorite still image from a plurality of continuously shot recorded still images. However, when a continuously shot still image is normally reproduced, the continuously shot still image is Switching is performed in a short time (every 0.7 seconds), and the images are reproduced one after another, so that the user cannot slowly appreciate the same recorded still image. This is a major drawback in an image recording / reproducing apparatus using a magnetic tape, in which a user usually reproduces and displays a normal reproduction.

Also, the continuous shooting recording function originally means that the user likes one of a plurality of still images recorded continuously.
The purpose is to be able to extract a single still image, and the still image other than the single still image that the user liked is unnecessary and meaningless to the user, but the user can select the single still image that the user liked. In order to fully appreciate
Unnecessary still images must be checked while being played back one by one using the frame-by-frame playback function, and it is necessary to arrive at the target still image, which has a problem that the user is forced to perform very troublesome operations. In addition, this troublesome operation must be executed every time reproduction is performed, and this also has a problem that this is a serious drawback.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. Only a still image (hereinafter, referred to as a representative still image) that a user likes from a plurality of still images shot by the continuous shooting function is provided. It is an object of the present invention to provide an image recording / reproducing apparatus which can sufficiently watch the video without complicated operation during reproduction.

[0020]

According to a first aspect of the present invention, there is provided an image recording / reproducing apparatus which converts an input video signal into a tape-like image by using at least two or more temporally continuous still images as continuous still images. Continuous shooting instructing means for instructing recording on a recording medium, from the continuous shooting still images, a representative still image determining means for determining a representative representative still image, and following the instructions from the continuous shooting instructing means, The input video signal is recorded on the tape-shaped recording medium together with the first identifier as the continuous shot still image, and the representative still image is recorded at a tape position corresponding to the representative still image determined by the representative still image determining means. Recording means for recording a second identifier indicating that the first identifier is detected, and detecting the first identifier from the tape-shaped recording medium when reproducing a video signal from the tape-shaped recording medium. If the second identifier is detected, the video signal being reproduced is a representative still image in the continuous still image when the second identifier is detected. And a reproducing means for identifying and reproducing the image.

According to a second aspect of the present invention, there is provided the image recording / reproducing apparatus according to the first aspect, wherein the reproducing means is configured to output the first signal while reproducing the video signal from the tape-shaped recording medium. When the second identifier is not detected and the second identifier is not detected, the output of the reproduced video signal is stopped. When both the first identifier and the second identifier are detected, the reproduced video signal is detected. It outputs a signal.

According to a third aspect of the present invention, there is provided an image recording / reproducing apparatus according to the first aspect, further comprising output mode switching means for switching between a normal output mode and a representative still image output mode. The above-mentioned reproduction means,
If the instruction of the normal output mode is received from the output mode switching means while the video signal is being reproduced from the tape-shaped recording medium, all of the continuously shot still images reproduced together with the first identifier are output. When the instruction for the representative still image output mode is received from the output mode switching means, the first identifier is detected, and when the second identifier is not detected, the output of the reproduced video signal is stopped. And
When both the first identifier and the second identifier are detected, a reproduced video signal is output.

According to a fourth aspect of the present invention, in the image recording / reproducing apparatus according to the first aspect, the representative still image recorded on the tape-shaped recording medium by the recording means is invalidated. An invalid instructing means for outputting an instruction, wherein the recording means, when receiving the invalid instruction from the invalid instructing means, erases the second identifier recorded on the tape-shaped recording medium.

According to a fifth aspect of the present invention, there is provided the image recording / reproducing apparatus according to the fourth aspect, further comprising a change instructing means for outputting an instruction to change the representative still image. The means, upon receiving the change instruction from the change instructing means, erases the second identifier recorded on the tape-shaped recording medium, and then deletes the representative still image newly determined by the representative still image determining means. The second identifier is recorded at the tape position corresponding to.

[0025]

Embodiment 1 Hereinafter, an image recording / reproducing apparatus according to Embodiment 1 of the present invention will be described with reference to the drawings. FIG. 1 is a camera-integrated DV (hereinafter, referred to as an image recording / reproducing apparatus) according to a first embodiment of the present invention.
FIG. 2 is a block diagram showing an entire configuration of the digital camera (hereinafter simply referred to as DV). In FIG. 1, reference numeral 101 denotes a magnetic tape, which is a tape-shaped recording medium for magnetically recording and reproducing video data, audio data, AUX data, and subcode data. Data is recorded, and at the time of reproduction, each of the above data is reproduced via the reproduction head 103.

Reference numeral 104 denotes an input signal processing circuit which inputs a video signal from a camera unit (not shown) when a camera operation mode such as a normal recording mode or a standby mode is input from a controller 113 described later. The input video signal is quantized, digital signal processing such as DV compression is performed, and output to the memory write control circuit 105 and the index image creation circuit 116 as video data.
Further, the input signal processing circuit 104 includes the controller 1
When the operation mode of the continuous shooting recording mode is input from the controller 13, video data is output at a timing when a still image update command is input from the controller 113. Also, the input signal processing circuit 104 stops outputting video data when the controller 113 inputs a STOP mode, a normal playback mode, or a VTR operation mode that does not use a camera unit such as a subcode insert. .

Reference numeral 106 denotes an image memory for signal processing, which is a frame memory for temporarily storing video data, and includes two frames, a frame memory A and a frame memory B. A memory write control circuit 105 stores the input video data alternately one frame at a time among the two frame memories of the signal processing image memory 106, and write frame information indicating which frame memory is currently being written. Is a memory read control circuit 1
07.

Reference numeral 107 denotes a memory read control circuit.
The write frame information is inputted from the memory write control circuit 105, and the video data of the frame memory which is not indicated by the write frame information among the two frame memories of the signal processing image memory 106, ie, the frame memory which is not currently being written. And outputs it to a recording signal processing circuit 108 and a display signal processing circuit 109 described later.

Reference numeral 108 denotes a recording signal processing circuit, which receives video data and audio signals input from the memory read control circuit 107 when a recording system operation mode such as a normal recording mode or a continuous recording mode is input from the controller 113. Audio data input from a processing circuit (not shown) and AUX /
After adding data for error correction to the subcode data, the data is recorded on each sector of the magnetic tape 101 via the recording head 102 according to the tape format shown in FIGS. When a standby mode, a STOP mode, or a reproduction system operation mode is input from the controller 113, the recording signal processing circuit 108 stops the recording process.

Reference numeral 109 denotes a display signal processing circuit which converts video data input from the memory read control circuit 107 into D
Display signal processing such as V expansion and inverse quantization is performed, converted into a displayable video signal, and output to a display unit 110 described later.
The display unit 110 is a liquid crystal panel or a viewfinder, and displays a video signal from the display signal processing circuit 109. Further, the display unit 110 may be an external monitor used by being connected from outside the apparatus.

Reference numeral 111 denotes a reproduction signal processing circuit. When a reproduction system operation mode such as a normal reproduction mode or a reverse reproduction mode is input from the controller 113, the reproduction head 103
The reproduction data obtained through the AUX is subjected to reproduction signal processing such as error correction, and video data, audio data and AUX
/ Subcode data, video data to the memory write control circuit 105 and an index image creation circuit 116 described later, audio data to the audio signal processing circuit, and AUX / subcode data to the controller 1.
13 is output. Also, the reproduction signal processing circuit 1
Numeral 11 stops the reproduction process when a STOP mode, a standby mode, or a recording system operation mode is input from the controller 113. Also, the reproduction signal processing circuit 111
When the output stop command is received from the controller 113 while the operation mode of the reproduction system is being input, the output of the video data is stopped. The key input unit 112 outputs a command from the user as a key signal. Controller 113
Inputs the key signal from the key input means 112 and the AUX / subcode data from the reproduction signal processing circuit 111,
The AUX / subcode data is generated during recording and output to the recording signal processing circuit 108 while controlling the entire system.

Reference numeral 113 denotes a controller which outputs a continuous recording mode as an operation mode.
A still image update command is output to the input signal processing circuit 104 at 0.7 second intervals. Further, the controller 113 outputs an index image creation command and an index image output command to the index image creation circuit 116 and an output stop command to the reproduction signal processing circuit 111 as necessary.

Numeral 114 denotes a tape drive circuit, which controls the magnetic tape 1 in accordance with a drive command from the controller 113.
01 is driven. An index image memory 115 is an image memory capable of storing n (n is a natural number, n ≦ N) video data having a data amount of 1 / N (N is a positive real number) of one frame. With capacity. 116
Is an index image creation circuit, and the controller 11
3, while the index image creation command is being input, the input signal processing circuit 104 or the reproduction signal processing circuit 11
1 is converted to reduced image data in which the video data input from any one of the frames is reduced to a data amount of 1 / N (N is a positive real number) frame by frame, and index image memory 11
5 sequentially. When the index image output circuit receives an index image output command from the controller 113, the index image creation circuit 116
5 is output to the memory write control circuit 105 as index image data.

In FIG. 1, the recording means includes an input signal processing circuit 104, a memory write control circuit 105, a signal processing image memory 106, a memory read control circuit 107, a recording signal processing circuit 108, a recording head 102, a tape The drive unit includes a drive circuit 114 and a controller 113. The playback means includes a tape drive circuit 114, a playback head 103, a playback signal processing circuit 111, a memory write control circuit 105, a signal processing image memory 106, and a memory read control circuit 107. And a controller 113. The representative still image determining means includes an index image creating circuit 116, an index image memory 11
5, key input means 112. Further, the continuous shooting instruction means, the output mode switching means, the invalidation instruction means, and the change instruction means are realized by key signals from the key input means 112.

The operation of the image recording / reproducing apparatus configured as described above will be described below. Description of Operation (1) Recording Operation of Continuously Shot Still Image First, a recording operation of a continuously shot still image will be described with reference to FIG. FIG. 2 is a schematic diagram showing the recorded contents of a video sector and a sub-code sector when a continuously shot still image is recorded on the magnetic tape 101. For convenience of description, the recording of the moving image MV1 has been completed up to the current tape position p2, and the recording of a continuously shot still image is started from p2.
The write frame information output by the memory write control circuit 105 is a frame memory A. Also,
The current operation mode output from the controller 113 is a standby mode.

At the tape position p2 in FIG. 2, when the controller 113 receives the key signal of the continuous recording key from the key input means 112, the controller 113 outputs the continuous recording mode as the operation mode, and sends the still image to the input signal processing circuit 104. An update command is output, and a drive command for normal recording is output to the tape drive circuit 114. Tape drive circuit 114
When a drive command for normal recording is received, the magnetic tape 101 starts driving at the tape speed for normal recording. When a still image update command is input while the continuous shooting recording mode is input as an operation mode from the controller 113, the input signal processing circuit 104 inputs a video signal from the camera unit and performs digital signal processing such as quantization and DV compression. And outputs as video data. That is, the input signal processing circuit 104 receives the video signal of the continuously shot still image PV1 from the camera unit and outputs the video data of the continuously shot still image PV1. When the video data is input from the input signal processing circuit 104, the memory write control circuit 105 writes the video data in the frame memory A of the signal processing image memory 106.

When the writing to the frame memory A is completed, the memory write control circuit 105 changes the write frame information to the frame memory B and outputs it to the memory read control circuit 107. The memory read control circuit 107 reads the video data from the frame memory of the signal processing image memory 106 not indicated by the write frame information, and outputs the video data to the recording signal processing circuit 108 and the display signal processing circuit 109, respectively.

At present, since the writing frame information indicates the frame memory B, the video data of the frame memory A, that is, the video data of the continuously shot still image PV1 is read. When the continuous shooting recording mode is input as an operation mode from the controller 113, the recording signal processing circuit 108 inputs video data from the memory reading control circuit 107, AUX / subcode data from the controller 113, and adds error correction data. , The video data in the video data area of the video sector of the magnetic tape 101, the AUX data in the AUX area of the video sector,
The recording head 10 stores the subcode data in the subcode sector.
Record via 2. Here, while the controller 113 is outputting the continuous shooting recording mode as the operation mode, the continuous shooting still image pack (the first still image pack) indicating that the video data recorded on the magnetic tape 101 is a continuous shooting still image. The identifier is output to the recording signal processing circuit 108 in order to record the identifier in the optional area of the subcode sector.

In order to record the continuous still image pack (pack header = F1h) in the optional area, a maker code pack (pack header = F0) is required.
h). Fig. 3 shows MAKE C
FIG. 4 is a schematic diagram showing an example of the contents of the ODE pack, and FIG. MAKER CODE of FIG.
In the pack, reference numeral 301 denotes a pack header, which is fixed at F0h. Reference numeral 302 denotes a maker code, which contains a code of a DV maker using the option area. Here, the maker code 302 is temporarily set to 02h. 303
Is an area for storing the total number of packs.
The area occupied by the manufacturer indicated by 02 is this MAKE
This indicates how many R CODE packs follow, and since the subcode sector is completed in one frame, it is possible to continue up to 11 packs.

Numerals 304 and 305 are empty areas according to the DV standard, and all bits are filled with 1. This MAKE
In the area after the R CODE pack is recorded (if it is a subcode sector, it is limited to the same frame)
The OPTION pack can be arranged freely within the range specified by the maker specified by the maker code 302 in the total pack number data 303. The OPTION pack is a pack whose pack header is F1h to FEh. In the continuous shot still image pack shown in FIG. 4, reference numeral 401 denotes a pack header, which is fixed at F1h.

The maker code 302 shown in FIG. 3 and the pack header 401 shown in FIG. Reference numeral 402 stores a continuous shooting number, that is, a serial number of a continuous shooting still image. The continuous shooting number is assigned from 1 for each continuous shooting record, and is incremented by 1 each time a continuously shot still image is updated at 0.7 second intervals. 403
Reference numeral 405 denotes a reserved area in which all bits are filled with 1. Here, in the following description, when it is described as a continuous shooting still image pack, it is assumed that a MAKE CODE pack is also included at the same time.

Since the first continuously shot still image is to be recorded on the magnetic tape 101 at present, the controller 11
Reference numeral 3 denotes a continuous shooting still image pack PP1 whose continuous shooting number is "1", which is output to the recording signal processing circuit 108.

With the above operation, the video data of the continuously shot still image PV1 and the continuously shot still image pack PP1 whose continuous shooting number is "1" are recorded for one frame from the tape position p2.

On the other hand, the display signal processing circuit 109 outputs the continuously shot still image PV1 input from the memory read control circuit 107.
The video data is subjected to display signal processing such as DV expansion and inverse quantization, and is converted into a video signal that can be displayed on the display unit 110. As a result, the display unit 110 displays the continuously shot still image PV1
Is displayed.

The controller 113 includes the input signal processing circuit 1
A new still image update command is output 0.7 seconds after the still image update command is output to 04. That is, since the input signal processing circuit 104 does not input a new still image update command from the controller 113 until 0.7 seconds have elapsed, the video data obtained by digitally processing the video signal from the camera unit is transmitted to the memory write control circuit 105. Do not output. The memory write control circuit 105 includes an input signal processing circuit 104
, No new video data is input, so that no video data is stored in the signal processing image memory 106, and the write frame information output to the memory read control circuit 107 also indicates the frame memory B. . Since the memory read control circuit 107 does not change the write frame information from the frame memory B,
For 0.7 seconds, the video data of the frame memory A, that is, the video data of the continuously shot still image PV1 is continuously output. The recording signal processing circuit 108 also includes a continuously shot still image pack P1 from the memory read control circuit 107 and a continuously shot still image pack P with a continuous shot number "1" from the controller 113.
P1 is continuously recorded on the magnetic tape 101 via the recording head 102. Also in the display unit 110, 0.7
For a second, the continuous shooting still image PV1 is continuously displayed.
By the above operation, the video data of the continuous shot still image PV1 and the continuous shot still image pack PP1 with the continuous shot number “1” are recorded at the tape positions p2 to p3 and displayed on the display unit 110.

If 0.7 seconds have elapsed since the start of recording of the continuous shooting still image PV1 and the key signal of the continuous shooting recording key is continuously input from the key input means 112, the controller The recording signal processing circuit 108 outputs a still image update command to the input signal processing circuit 104 again, and adds 1 to the previous continuous shooting number, that is, the continuous shooting still image pack PP2 having the continuous shooting number “2”. Start output to Upon input of the still image update command, the input signal processing circuit 104 inputs a new video signal from the camera unit and outputs video data subjected to digital signal processing. That is, the input signal processing circuit 104 receives the video signal of the continuously shot still image PV2 from the camera unit and outputs the video data of the continuously shot still image PV2. When the video data of the continuously shot still image PV2 is input from the input signal processing circuit 104, the memory write control circuit 105 writes the video data in the frame memory B of the image memory 106 for signal processing. When the writing to the frame memory B is completed, the memory write control circuit 105 changes the write frame information to the frame memory A and outputs it to the memory read control circuit 107. The memory read control circuit 107 reads video data from the frame memory B not indicated by the write frame information, that is, video data of the continuously shot still image PV2, and outputs the video data to the recording signal processing circuit 108 and the display signal processing circuit 109, respectively.

Since the recording signal processing circuit 108 keeps inputting the continuous shooting recording mode as the operation mode from the controller 113, the video data of the continuous shooting still image PV2 input from the memory read control circuit 107 and the input from the controller 113 The error correction data is added to the AUX / subcode data including the continuous shooting still image pack PP2 having the continuous shooting number “2”, and is recorded on the magnetic tape 101 via the recording head 102. Display signal processing circuit 10
9 converts the video data of the continuously shot still image PV2 input from the memory read control circuit 107 into a displayable video signal and causes the display unit 110 to display the video signal.

Here, similarly to the case of the previous continuous still image, the new still image update command is output from the controller 113 at the tape position p4 0.7 seconds after the tape position p3. In the meantime, the continuously shot still image PV2 and the continuously shot still image pack PP2 are continuously recorded. By repeating the above operation, the recording of the video data of the continuously shot still image PVn and the continuously shot still image pack PPn whose continuous shooting number is “n” is completed at the tape position p10.

When the continuous recording key from the key input means 112 is released during the recording at the tape positions p9 to p10,
After completing the recording up to the tape position p10, the controller 113 outputs the standby mode as the operation mode and outputs a STOP drive command to the tape drive circuit 114. The tape drive circuit 114 includes a controller 113
Receiving the STOP drive command from the
Stop driving. When the standby mode is input as the operation mode, the input signal processing circuit 104 inputs a video signal from the camera unit at the same cycle (about 33.3 ms) as in the normal recording mode, performs digital signal processing, and outputs video data.

The memory write control circuit 105 has about 33.
Video data is input at intervals of 3 ms, and the video data is alternately stored in the frame memories A and B of the image memory 106 for signal processing. At the same time, the memory write control circuit 105 sets and outputs the write frame information so as to indicate the frame memory being written. Further, the memory read control circuit 107 continues to output the video data of the frame memory not indicated by the write frame information. The display signal processing circuit 109 performs display signal processing on the video data input from the memory read control circuit 107, and keeps displaying the video signal on the display unit 110.

On the other hand, after the standby mode is input from the controller 113, the recording signal processing circuit 108
The video data input from the memory read control circuit 107 is not recorded on the magnetic tape 101. With the above operation, as shown in FIG. 2A, the continuously shot still images PV1 to PVn are recorded together with the continuously shot still image packs PP1 to PPn over the section of the tape positions p2 to p10.

Description of Operation (2) Operation of Determining Representative Still Image Next, an operation of determining a representative still image from the continuously shot still images recorded in the operation description (1) will be described. Here, as an example of a method for determining a representative still image, a continuously shot still image that is continuously shot and recorded is converted into a reduced image, and a plurality of reduced images are displayed side by side on the display unit 110 and simultaneously displayed (hereinafter, referred to as an index image). FIG. 2 shows a method in which the user determines a representative still image by key input of the key input means 112 while checking the displayed reduced image.
This will be described with reference to FIG. 5B and FIG. FIG. 5 shows a conceptual diagram when an index image is displayed on the display unit 110. In this example, up to the process of converting a continuously shot still image that has been continuously shot and recorded into a reduced image and storing the reduced image in the index image memory 115, the recording operation of the continuously shot still image described in the above operation description (1) is performed in parallel. Be executed.

When the controller 113 receives the key signal of the continuous recording key from the key input means 112 at the tape position p2 in FIG. 2, it outputs the continuous recording mode as the operation mode and updates the still image to the input signal processing circuit 104. At the same time as outputting the command, the index image creation circuit 11
6, an index image creation command is output.

The input signal processing circuit 104 receives the above-mentioned still image update command, inputs a video signal of the continuously shot still image PV1 from the camera unit, performs digital signal processing, and outputs it as video data of the continuously shot still image PV1. . The video data of the continuously shot still image PV1 is stored in the memory write control circuit 1
05 and the index image creation circuit 1
16 is also input. The video data input to the memory write control circuit 105 is thereafter processed as described in the recording operation of a continuously shot still image in the operation description (1).

Each time an index image creation command is input from the controller 113, the index image creation circuit 116 inputs video data and creates reduced image data whose data amount is reduced to 1 / N. The index image creation circuit 116 stores the created reduced image data of the continuously shot still image PV1 in the area 1 of the index image memory 115.

Thereafter, the recording signal processing circuit 108
When the controller 113 confirms that the continuous shooting still image PV1 is recorded up to the tape position p3 in FIG. 2 and that the key signal of the continuous shooting recording key is continuously input from the key input unit 112, the input signal processing is performed again. At the same time as outputting a still image update command to the circuit 104, it outputs an index image creation command to the index image creation circuit 116.

The input signal processing circuit 104 receives the still image update command, inputs the video signal of the continuously shot still image PV2 from the camera unit, performs digital signal processing, and performs the continuous shot still image P
Memory write control circuit 10 as V2 video data
5 and output to the index image creation circuit 116. When receiving an index image creation command from the controller 113, the index image creation circuit 116 creates reduced image data in which the data amount of the input continuously shot still image PV2 is reduced to 1 / N, and stores the reduced image data in the area 2 of the index image memory 115. Store.

By repeating the above processing, when recording of video data of continuously shot still images up to the tape position p10 is completed, the continuously shot still images PV1 to continuously shot still images are stored in the areas 1 to n of the index image memory 115. Image PV
This means that n reduced image data are stored. The processing up to this is the part that is executed in parallel with the continuous shooting still image recording operation described in the operation explanation (1).

When the continuous recording key from the key input means 112 is released and the processing of the standby mode is executed as the operation mode, the controller 113 outputs the index image display mode as the operation mode,
An index image output command is output to the index image creation circuit 116. When the input signal processing circuit 104 recognizes that the operation mode has changed from the standby mode to the index image display mode, it stops outputting video data to the memory write control circuit 105. Upon receiving the index image output command, the index image creation circuit 116 outputs all the reduced image data stored in the index image memory 115 to the memory write control circuit 105 as index image data. Here, the index image data is such that “image 1”, “image 2”,. . . , And the character data of "image n" are added to the reduced image data. In the index image data, the reduced image data stored in the area 1 of the index image memory 115 is arranged at the position of “image 1”, and the reduced image data stored in the area 2 is arranged at the position of “image 2”. ,. . . , Are created so that the reduced image data stored in the area n is arranged at the position of “image n”.

The memory write control circuit 105 stores the index image data input from the index image creation circuit 116 in the frame memory indicated by the write frame information. Here, assuming that the writing frame information indicates the frame memory B for convenience of explanation, it is assumed that the index image data is written to the frame memory B of the signal processing image memory 106.
When the writing of the index image data is completed, the memory writing control circuit 105 changes the writing frame information to “frame memory A”. Since the write frame information indicates the frame memory A, the memory read control circuit 107 reads and outputs the video data of the frame memory B, that is, the index image data.

Upon receiving the index image data from the memory read control circuit 107, the display signal processing circuit 109 converts the index image data into a video signal that can be displayed on the display unit 110. As a result, the image of the display content shown in FIG. 5 is displayed on the display unit 110.

After that, the user refers to the index image displayed on the display unit 110 and operates the key input unit 1.
For example, a representative still image is selected by operating a number key, for example, a number key. Hereinafter, for convenience of explanation, the description will be made assuming that the user has selected the image m as the representative still image.

When an operation mode is the index image display mode and a key signal of “numeral m” is inputted through the key input means 112, the controller 113 outputs a reverse reproduction mode as an operation mode, and drives the tape drive. A drive command for reverse reproduction is output to the circuit 114. Then, when a drive command for reverse reproduction is input, the tape drive circuit 114 drives the magnetic tape 101 to rewind from the tape position p10 toward the tape start end. When the playback signal processing circuit 111 inputs the reverse playback mode as the operation mode, the playback signal processing circuit 111 performs playback signal processing such as error correction on the video data obtained from the magnetic tape 101 via the playback head 103, and outputs the video data to the memory write control circuit 105. Output to AUX
The / subcode data is output to the controller 113.

The controller 113 extracts a continuously shot still image pack from the subcode data input from the reproduction signal processing circuit 111, and detects a continuously shot still image pack whose continuous shot number is "numerical number m-1". , The reverse playback mode is continued. Then, the controller 113 detects the continuous shooting still image pack having the continuous shooting number “numeral m−1”, that is, when the playback position moves toward the tape start end from the tape position p5, switches the operation mode to the normal playback mode. At the same time, a drive command for normal reproduction is output to the tape drive circuit 114. Then, when a drive command for normal reproduction is input, the tape drive circuit 114 drives the magnetic tape 101 so as to reproduce the magnetic tape 101 in the tape end direction.

When the controller 113 reaches the tape position p5, the controller 113 switches the operation mode to the subcode insert mode, sends a drive command for normal recording to the tape drive circuit 114, and sends the recording signal processing circuit 108 the sequence number " A continuous still image pack PPm of number m ″ and a representative still image pack RP1 (second identifier) are output. Here, the tape position p5 is detected, for example, by storing ABST data indicating the absolute tape position recorded in the subcode sector in the DV standard in the reverse playback mode,
It can be recognized by monitoring the ABST during normal reproduction. Also, the subcode insert mode is
In this mode, only the subcode sector is recorded, and the other video sectors and the like are operated in the reproduction mode. The representative still image pack (pack header = F2h) indicates a representative still image in a series of continuously shot still images, and is recorded in the optional area of the subcode sector.

FIG. 6 is a schematic diagram showing an example of a representative still image pack.
Recorded with the CODE pack. In FIG. 6, 6
01 is a pack header, which is fixed at F2h. The maker code 302 in FIG. 3 and the pack header 601 in FIG. 6 indicate that the pack is a representative still image pack. 602-
A reserved area 605 has all bits filled with “1”.
Here, in the following description, when it is described as a representative still image pack, it is assumed that a MAKE CODE pack is also included at the same time.

The recording signal processing circuit 108 is the controller 1
Since the sub-code insert mode is input as the operation mode from 13, the continuous shooting still image pack PPm and the representative still image pack RP 1 with the continuous shooting number “numeral m” input from the controller 113 are recorded in the sub-code sector.
It is not recorded in the video sector and audio sector.

The controller 113 continues the subcode insertion, and outputs a standby mode as an operation mode when it reaches the tape position p6. When the recording signal processing circuit 108 enters the standby mode, the recording signal processing circuit 108
The subcode insertion operation to 01 is stopped. With the above operation, the operation of determining the representative still image is completed, and the magnetic tape 101 is recorded as shown in FIG.

Description of Operation (3) Reproduction Operation of Continuously Captured Still Image Next, the reproduction operation of the representative still image determined in the above operation description (2) will be described. Here, as an example of a method of reproducing a representative still image, an operation in which the user switches a continuous still image reproduction method by the controller 113 in response to a key signal of a normal output / representative image output switch by the user via the key input unit 112 is shown in FIG. This will be described with reference to FIG.

For convenience of explanation, it is assumed that the current tape position is p1 and the reproducing operation is started from p1. The write frame information output by the memory write control circuit 105 is a frame memory A. The current operation mode output from the controller 113 is ST
OP mode is set.

First, the reproduction operation in the case where the normal output / representative image output switch in the key input means 112 is set to the normal output will be described. At the tape position p <b> 1 in FIG. 2, the controller 113 continuously inputs the key signal of the normal output from the key input unit 112. Thereafter, the controller 113 operates the key input unit 1
When the key signal of the normal reproduction key is received from 12, the normal reproduction mode is output as the operation mode, and a drive command for normal reproduction is output to the tape drive circuit 114. When the tape drive circuit 114 receives the drive command for normal reproduction, the tape drive circuit 114 starts driving the magnetic tape 101 at the tape speed for normal reproduction. When a normal playback mode is input as an operation mode from the controller 113, the playback signal processing circuit 111 performs playback signal processing such as error correction on playback data at the tape position p1 obtained via the playback head 103, and thereafter, Video data, audio data, and AUX / subcode data are separated, video data is output to the memory write control circuit 105, audio data is output to the audio signal processing circuit, and AUX / subcode data is output to the controller 113. . When the video data is input from the reproduction signal processing circuit 111, the memory write control circuit 105 writes the video data into the frame memory A of the signal processing image memory 106. When the writing to the frame memory A is completed, the memory write control circuit 105 changes the write frame information to the frame memory B and outputs it to the memory read control circuit 107. Memory read control circuit 1
07 reads video data from the frame memory of the signal processing image memory 106 not indicated by the write frame information, and outputs the video data to the recording signal processing circuit 108 and the display signal processing circuit 109. At present, since the write frame information indicates the frame memory B, the video data in the frame memory A, that is, the tape position p in the moving image MV1 is displayed.
One video data is read. The recording signal processing circuit 108 receives video data from the memory read control circuit 107. However, since the normal reproduction mode is input as the operation mode from the controller 113, the recording processing is not performed. On the other hand, the display signal processing circuit 10
9 performs display signal processing such as DV expansion and inverse quantization on the video data input from the memory read control circuit 107,
It is converted into a video signal that can be displayed on the display unit 110, and the display unit 1
Output to 10 Thereby, the display unit 110 displays the moving image M
This means that the video signal at the tape position p1 at V1 has been displayed.

The above process is repeated while driving the magnetic tape 101 in the normal reproduction operation, and the memory write control circuit 105 alternates video data in the frame memories A and B of the signal processing image memory 106 one frame at a time. And the memory read control circuit 1
07 alternately reads video data from the frame memory to which the memory write control circuit 105 is not writing, that is, the frame memory to which the write frame information does not indicate. Up to this point, the moving image MV1 is reproduced and displayed.

When reaching the tape position p 2, the controller 113 outputs the AUX input from the reproduction signal processing circuit 111.
Although the continuous shot still image pack PP1 is detected from the / subcode data, the key signal of the normal output is continuously input, so that the reproduction is performed in the same manner as the reproduction of the moving image MV1.

When the above operation is repeated and the reproduction is performed up to the tape position p10, the display unit 110 reproduces and displays the moving image MV1 from the tape position p1, and then displays the still images PV1, PV
2,. . . , PVn are continuously reproduced and displayed for 0.7 seconds each.

Next, a description will be given of a reproducing operation when the normal output / representative image output switch is set to the representative image output in the key input means 112. For convenience of explanation, it is assumed that the current tape position is p1 and the reproducing operation is started from p1. The write frame information output by the memory write control circuit 105 is a frame memory A. The current operation mode output from the controller 113 is a STOP mode.

At the tape position p 1 in FIG. 2, the controller 113 keeps periodically inputting a key signal for representative image output from the key input means 112. Thereafter, upon receiving the key signal of the normal reproduction key from the key input means 112, the controller 113 outputs the normal reproduction mode as the operation mode and outputs a drive command for normal reproduction to the tape drive circuit 114. When the tape drive circuit 114 receives the drive command for normal reproduction, the tape drive circuit 114 starts driving the magnetic tape 101 at the tape speed for normal reproduction.

Thereafter, the reproducing operation up to the tape position p2 is as follows.
Processing is performed in the same manner as when the normal output / representative image output switch is set to the key signal for normal output. When reaching the tape position p2, the controller 113
Detects the continuous shooting still image pack PP1 from the AUX / subcode data input from the reproduction signal processing circuit 111, and also outputs a key signal for representative image output. Is output. When the reproduction signal processing circuit 111 receives the output stop command, the reproduction signal processing circuit 111 continuously reproduces each data on the magnetic tape 101 via the reproduction head 103, but stops outputting the video data. Therefore, the memory write control circuit 105 stops storing video data in the signal processing image memory 106. That is, immediately before the tape position p2, the video data is not input until the last one frame of video data of the moving image MV1 is stored in the signal processing image memory 106. Here, for convenience of explanation, the memory write control circuit 105 currently has the frame memory A
Complete writing to movie (last one frame of movie MV1)
It is assumed that the write frame information of the frame memory B is output.

Since the controller 113 continues to output the output stop command until it reaches the tape position p5, no new video data is stored in the signal processing image memory 106. That is, the video of the last frame of the moving image MV1 is continuously displayed on the display unit 110.

When the tape position p5 is reached, the controller 113 cancels the output stop command which has been continuously output to the reproduction signal processing circuit 111 in order to input the representative still image pack RP1 from the reproduction signal processing circuit 111. Then, the reproduction signal processing circuit 111 resumes the output of the video data because the output stop command has been released. The video data output at this time is video data of a continuously shot still image PVm that is a representative still image. The memory writing control circuit 105 writes the video data of the representative still image into the frame memory B, and outputs the writing frame information of the frame memory A when the writing is completed. Since the write frame information indicates the frame memory A, the memory read control circuit 107 reads the video data of the representative still image stored in the frame memory B. The video data of the representative still image is displayed on the display unit 110 via the display signal processing circuit 109.

When the above is repeatedly executed from the tape position p5, the controller 113 at the tape position p6.
Represents the representative still image pack R from the reproduction signal processing circuit 111.
Stops inputting P1. The controller 113 outputs an output stop command to the reproduction signal processing circuit 111 again. When the reproduction signal processing circuit 111 receives the output stop command, the reproduction signal processing circuit 111 stops outputting the video data as in the previous case.
In the memory write control circuit 105, the signal processing image memory 106, the memory read control circuit 107, the display signal processing circuit 109, and the display unit 110, the video data immediately before the tape position p6, that is, the continuous still image PVm that is the representative still image. The video data will continue to be processed.

Since the controller 113 does not detect the representative still image pack until the tape position p10, the controller 113 keeps outputting the output stop command. Therefore, the display unit 110 continues to display the representative still image PVm. Controller 11
In the case of No. 3, the output stop command is released and the normal reproduction is performed as in the case of the moving image MV1 (tape positions p1 and p2), since the continuous shooting still image pack is not detected after the tape position p10. By the above operation, normal reproduction is performed while updating the display other than the continuously shot still images while updating the display, and only the representative still image PVm is displayed during the playback of the continuously shot still images.

Description of Operation (4) Invalidation Operation of Representative Still Image Next, an operation when the user invalidates the representative still image determined in the above operation description (2) will be described. Here, as an example of a method of invalidating the representative still image, a method of invalidating the user by operating the representative invalid key of the key input unit 112 will be described with reference to FIGS. 2A and 2B. I do. For convenience of explanation, it is assumed that each data on the magnetic tape 101 is recorded as shown in FIG. 2B, and the current tape position is p3. The current operation mode is the STOP mode.

At the tape position p3 in FIG. 2, when the key signal of the representative invalid key is input from the key input means 112, the controller 113 outputs a reverse reproduction mode as an operation mode and sends a reverse reproduction mode to the tape drive circuit 114. Outputs a drive command. The tape drive circuit 114 receives the drive command for reverse reproduction and drives the magnetic tape 101 to rewind in the tape start direction. The reproduction signal processing circuit 111 reproduces each data from the magnetic tape 101 via the reproduction head 103 when the reverse reproduction operation mode is input from the controller 113.

The controller 113 controls the reproduction signal processing circuit 1
From the AUX / subcode data input from step 11, the recording start point of the continuously shot still image, that is, the tape position p2 is detected. The detection of the recording start point of the continuously shot still images can be realized by detecting the time point at which the continuously shot still image pack PP1 changes from detection to undetection. When detecting the recording start point of the continuously shot still images, the controller 113 outputs a normal reproduction mode as an operation mode, and outputs a drive command for normal reproduction to the tape drive circuit 114. And the tape drive circuit 11
Numeral 4 receives a drive command for normal reproduction and drives the magnetic tape 101 to reproduce it in the tape end direction. When a normal reproduction operation mode is input from the controller 113, the reproduction signal processing circuit 111 reproduces each data from the magnetic tape 101 via the reproduction head 103.

When the tape position p5 is reached again, the controller 113 outputs the subcode insert mode as the operation mode, and also issues a normal recording drive command to the tape drive circuit 114 and the representative still image pack RP1 to the recording signal processing circuit 108. Outputs the subcode data from which is deleted. The sub-code data includes a continuously shot still image PPm.

The tape drive circuit 114 drives the magnetic tape 101 at the normal recording tape speed in response to the normal recording drive command. The recording signal processing circuit 108 is the controller 1
When the operation mode of the subcode insert mode is received from the controller 13, only the subcode data input from the controller 113 is transferred to the magnetic tape 10 via the recording head 102.
Record in one subcode sector.

The controller 113 continues the above subcode insert operation for 0.7 seconds, that is, up to the tape position p6, and thereafter outputs the STOP mode as an operation mode to complete the subcode insert operation.

As described above, at the tape positions p5 to p6, the representative still image pack RP1 is erased by overwriting and recording the subcode data of only the continuously shot still image pack PVm in the subcode insert mode. Each data on the magnetic tape 101 is as shown in FIG.

Description of Operation (5) Changing Operation of Representative Still Image Next, an operation when the user changes the representative still image determined in the above-described operation description (2) will be described. Here, as an example of a method of changing the representative still image, a method of changing the representative still image by operating the representative change key of the key input unit 112 will be described with reference to FIGS. 2B and 2C. I do. For convenience of explanation, each data on the magnetic tape 101 is recorded as shown in FIG. 2B, and the current tape position is p3. It is assumed that the current operation mode is the STOP mode.

When the key signal of the representative change key is input from the key input means 112 to the controller 113 at the tape position p3 in FIG. 2, first, the invalid operation of the representative still image described in the operation explanation (4) is performed. In the subcode insert mode, the tape positions p5 to p6 in FIG.
Over the entirety of the representative still image pack RP1.

Thereafter, from the tape position p6, the controller 113 outputs a drive command for reverse playback mode and reverse playback.
The controller 113 performs reverse playback up to a tape position beyond the tape position p2 at which the continuous shot still image pack is no longer input from the playback signal processing circuit 111, and then outputs a drive command for normal playback mode and normal playback. Again tape position p
When the number reaches 2, the controller 113 detects the continuous-shot still image pack PP1.
6, an index image creation command is output. The index image creation circuit 116 receives the index image creation instruction, inputs video data from the reproduction signal processing circuit 111, and creates reduced image data in the same manner as the representative still image determination operation described in the operation explanation (2). , In the area 1 of the index image memory 115. Here, the reduced image data stored in the index image memory 115 is the reduced image data of the continuously shot still image PV1.

Thereafter, when the normal reproduction operation is continued, the controller 113 inputs the continuous photographing still image pack PP2 having the consecutive photographing number "2" different from the previous photographing at the tape position p3.
The index image creation command is output again. Upon receiving the index image creation command, the index image creation circuit 116 creates reduced image data from the video data of the continuously shot still image PV2 input from the reproduction signal processing circuit 111 and stores the reduced image data in the area 2 of the index image memory 115. I do.

By repeating the above operation up to the tape position p10, reduced image data of the continuously shot still images PV1 to PVn are stored in the areas 1 to n of the index image memory 115, respectively.

When the tape reaches the tape position p10, the controller 113 converts the continuously shot still image pack into the reproduced signal processing circuit 11
Therefore, the index image display mode is output as the operation mode, the STOP drive command is output to the tape drive circuit 114, and the index image output command is output to the index image creation circuit 116. Upon receiving the index image output command, the index image creation circuit 116 outputs all the reduced image data stored in the index image memory 115 to the memory write control circuit 105 as index image data. The index image data is stored in the memory write control circuit 1
05, the image memory 106 for signal processing, the memory read control circuit 107, and the display signal processing circuit 109 are displayed on the display unit 110. Here, the display screen of the display unit 110 displays the image shown in FIG.

Thereafter, the user selects a representative still image by operating, for example, a numeric key of the key input means 112. Here, for convenience of explanation, it is assumed that the user has selected the continuous shot still image q as the representative still image.
When a key signal of “numerical q” is input to the controller 113 via the key input unit 112, the above operation description (2)
Similarly to the operation of determining the representative still image described in the above section, the representative still image pack RP2 and the continuous still image pack PPq are recorded in the subcode sector at the tape positions p7 to p8 in the subcode insert mode. With the above operation, the operation of changing the representative still image is completed, and the magnetic tape 101 is moved to the state shown in FIG.
It will be recorded as follows.

As described above, according to the present embodiment, in addition to the continuous still image pack (first identifier) indicating that the video data being recorded is a continuous still image, Since the representative still image pack indicating the representative still image is recorded in the optional area of the subcode sector, only the still image that the user likes from the plurality of still images is easily taken out for viewing. be able to.

In the first embodiment, the representative still image is determined by storing the index image data in the index image memory 115 in parallel with the recording of the continuously shot still image, and the continuous shooting at the tape position p10. The index image data is displayed on the display unit 1 when the recording of the still image is completed.
10, the user selects a representative still image while referring to the displayed index image.
During recording of continuously shot still images, only recording on the magnetic tape 101 may be performed, and at the time of reproduction or the like, an index image may be created by an instruction from a user and a representative still image may be selected. The operation in this case can be realized by performing the same operation as after the deletion of the representative still image pack described in the operation of changing the representative still image in the operation description (5).

As another method, a continuous still image is temporarily stored in a memory when a continuous still image is recorded, and a representative still image is determined by a user. The continuously shot still images stored in the memory may be recorded on the magnetic tape 101. In this case, it can be easily realized by adding a memory for storing the continuously shot still images.

Further, in the present embodiment, the multi-screen display of the continuously shot still images is performed by creating the index image data, and the user determines the representative still image while referring to the multi-screen still images. Means, for example, one continuous still image at fixed time intervals or at the instruction of the user.
You may comprise so that it may display by a sheet and may determine a representative still image.

In the present embodiment, when a large number of continuously shot still images are recorded at one time, the index image data created from the reduced image data is divided into several screens, and the index image data is sequentially stored. It may be configured to display on the display unit 110.

In the present embodiment, the continuous shot still image pack and the representative still image pack are recorded in the subcode sector.
Any configuration may be used as long as the continuously shot still image and the representative still image can be distinguished, such as by recording in a UX area. Further, the tape position data on which the representative still image is recorded may be stored in the DV standard MIC.

In the present embodiment, the representative still image determining means, the invalidity instructing means, the change instructing means, and the output mode switching means are based on an instruction from the user via the key input means 112. Controller 11
3 may be followed. In this case, the controller 113 gives the various instructions according to a program described in advance in a ROM or the like.

Also, in the present embodiment, one representative still image is selected from a series of continuously shot still images, but a plurality of still images are selected from a series of continuously shot still images. You may comprise so that it may be selected as a representative still image. In this case, each time the controller 113 detects a representative still image pack while reproducing a series of continuously shot still images, the display unit 110 displays a video signal that is a representative still image.

In the present embodiment, after the representative still image pack is detected and the representative still image is reproduced and displayed, a section in which a series of continuously shot still images is recorded (the tape position in FIG. 2B). It is assumed that the representative still image is continuously reproduced and displayed only during the passage of the section from p6 to p10). For example, when a representative still image is detected, the representative still image is always reproduced and displayed for a specified time (for example, 7 seconds). With such a configuration, a stable reproduction and display time can be ensured regardless of the tape position where the representative still image is recorded for a series of continuously shot still images, which is very easy for the user to use. While the representative still image is being displayed for the specified time, it can be easily realized by performing processing such as stopping the drive of the magnetic tape 101.

Further, in the present embodiment, the recording time of a continuously shot still image is set to 0.7 seconds (21 frames), but may be set to, for example, one frame or several frames. Furthermore, in the present embodiment, the representative still image selected from the series of continuously shot still images is reproduced and displayed. However, the present invention is not limited to only the reproduction display, and may be, for example, an automatic print function of the representative still image. Can be applied and can be used with a wide range of functions.

[0106]

As described above, according to the image recording / reproducing apparatus according to the first aspect of the present invention, an input video signal is converted into at least two or more temporally continuous still images by a continuous shooting still image. As continuous shooting instruction means for instructing to record on a tape-shaped recording medium, and from among the continuous shooting still images,
In accordance with an instruction from the representative still image determining means for determining a representative representative still image and an instruction from the continuous shooting instruction means, an input video signal is recorded as the continuous shooting still image together with a first identifier on the tape-shaped recording medium. Recording means for recording a second identifier indicating a representative still image at a tape position corresponding to the representative still image determined by the representative still image determining means; and a video signal from the tape-shaped recording medium. When playing back, when the first identifier is detected from the tape-shaped recording medium, the video signal being played back is identified as a continuously shot still image, and when the second identifier is detected, Reproducing means for recognizing that the video signal being reproduced is a representative still image in the continuous-shot still image, and reproducing the video signal. When a still image is recorded, the first identifier is also recorded at the same time, the representative still image is determined by the representative still image deciding means from the continuous still images, and the tape position corresponding to the representative still image is determined by the recording means. Since the second identifier is further recorded on the tape-shaped recording medium, the still image and the representative still image can be identified from the tape-shaped recording medium, and the still image desired by the user can be easily displayed. Is obtained.

According to the image recording / reproducing apparatus of the second aspect of the present invention, in the image recording / reproducing apparatus of the first aspect, the reproducing means reproduces a video signal from the tape-shaped recording medium. When the first identifier is detected and the second identifier is not detected, the output of the reproduced video signal is stopped. When both the first identifier and the second identifier are detected, the reproduction is stopped. Since the selected video signal is output, only the representative still image determined by the representative still image determination means in the continuously shot still images is reproduced and displayed, and necessary still images are not reproduced and displayed. The effect that only an image can be appreciated is obtained.

An image recording / reproducing apparatus according to a third aspect of the present invention is the image recording / reproducing apparatus according to the first aspect, further comprising output mode switching means for switching between a normal output mode and a representative still image output mode, The above-mentioned reproduction means,
If the instruction of the normal output mode is received from the output mode switching means while the video signal is being reproduced from the tape-shaped recording medium, all of the continuously shot still images reproduced together with the first identifier are output. When the instruction for the representative still image output mode is received from the output mode switching means, the first identifier is detected, and when the second identifier is not detected, the output of the reproduced video signal is stopped. And
When both the first identifier and the second identifier are detected, the reproduced video signal is output. Therefore, during the operation of reproducing the continuously shot still image recorded on the tape-shaped recording medium, the normal output is performed. When the mode is set, all continuous shot still images are played back and displayed, and when the representative still image output mode is set, switching can be performed so that only the representative still image is played back and displayed. can get.

According to a fourth aspect of the present invention, in the image recording and reproducing apparatus according to the first aspect, the representative still image recorded on the tape-shaped recording medium by the recording means is invalidated. Invalid instruction means for outputting an instruction indicating that when the invalid instruction is received from the invalid instruction means, the recording means erases the second identifier recorded on the tape-shaped recording medium. Therefore, an effect is obtained that the previously determined representative still image can be invalidated.

According to a fifth aspect of the present invention, there is provided the image recording / reproducing apparatus according to the fourth aspect, further comprising change instruction means for outputting an instruction to change the representative still image, When receiving the change instruction from the change instruction means, the recording means deletes the second identifier recorded on the tape-shaped recording medium, and then deletes the representative newly determined by the representative still image determining means. Since the second identifier is recorded at the tape position corresponding to the still image, an effect is obtained that the representative still image can be changed from a previously determined still image to another continuously shot image. .

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an overall configuration of a DV which is an image recording / reproducing device according to a first embodiment of the present invention.

FIG. 2 is a diagram for explaining a state of a magnetic tape when a continuously shot still image is recorded in the image recording / reproducing apparatus.

FIG. 3 MAKER C recorded on a DV magnetic tape
FIG. 4 is a diagram for explaining the contents of an ODE pack

FIG. 4 is a diagram for explaining the contents of a continuously shot still image pack recorded on a DV magnetic tape.

FIG. 5 is a diagram illustrating an example of a display screen of an index image displayed on a display unit of a DV.

FIG. 6 is a diagram for explaining the contents of a representative still image pack recorded on a DV magnetic tape.

FIG. 7 is a diagram schematically showing a track pattern of a DV.

FIG. 8 is a diagram schematically showing a structure of a DV video sector.

FIG. 9 is a diagram schematically showing a structure of a DV subcode sector.

FIG. 10 is a diagram schematically showing a recording format of DV subcode data.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Magnetic tape 2 Tape running direction 3 Head scanning direction 4 ITI sector 5 Audio sector 6 Video sector 7 Subcode sector 11 Sync pattern recording area in video sector 12 ID data recording area in video sector 13 VAUX in video sector Recording area of video data in video sector 15 recording area of parity in video sector 21 recording area of subcode sector sync pattern 22 recording area of subcode sector ID data 23 recording area of subcode sector subcode data 24 sub Code sector parity recording area 101 Magnetic tape 102 Recording head 103 Playback head 104 Input signal processing circuit 105 Memory write control circuit 106 Image memory for signal processing 107 Memory read control circuit 108 recording signal processing circuit 109 a display signal processing circuit 110 display unit 111 the reproduction signal processing circuit 112 key input means 113 controller 114 tape drive circuit 115 index image memory 116 index image creation circuit

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hidemi Oka 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Shinjiro 1006 Kazuma Kadoma, Kadoma City Osaka Pref. Terms (reference) 5C018 HA02 HA09 5C022 AA11 AA13 AC00 AC03 AC12 AC69 5C053 FA07 FA21 GA10 GB06 GB09 HA33 JA21 KA24 LA01

Claims (5)

[Claims] 1. A continuous shooting instruction means for instructing an input video signal to record at least two or more temporally continuous still images as continuous shooting still images on a tape-shaped recording medium; A representative still image determining means for determining a representative representative still image from among the still images; and a tape together with a first identifier as the continuous shooting still image according to an instruction from the continuous shooting instruction means. Recording means for recording a second identifier indicating a representative still image at a tape position corresponding to the representative still image determined by the representative still image determining means, while recording the second identifier on the tape-shaped recording medium; When playing a video signal from a flat recording medium,
When the first identifier is detected from the tape-shaped recording medium, the video signal being reproduced is identified as a continuously shot still image. When the second identifier is detected, the video signal being reproduced is detected. An image recording / reproducing apparatus comprising: reproducing means for recognizing and reproducing a representative still image in the continuous shot still images. 2. The image recording / reproducing apparatus according to claim 1, wherein the reproducing means detects a first identifier while reproducing a video signal from the tape-shaped recording medium, and determines that the second identifier is not present. At the time of detection, the output of the reproduced video signal is stopped, and when both the first identifier and the second identifier are detected,
An image recording / reproducing apparatus for outputting a reproduced video signal. 3. The image recording / reproducing apparatus according to claim 1, further comprising output mode switching means for switching between a normal output mode and a representative still image output mode, wherein said reproducing means reproduces a video signal from a tape-shaped recording medium. In the case where the instruction for the normal output mode is received from the output mode switching means, all of the continuously shot still images reproduced together with the first identifier are output, and the output of the representative still image is output from the output mode switching means. When the mode instruction is received, the first identifier is detected, and when the second identifier is not detected, the output of the reproduced video signal is stopped, and the first identifier and the second identifier are stopped. An image recording / reproducing apparatus for outputting a reproduced video signal when both of the identifiers are detected. 4. The image recording / reproducing apparatus according to claim 1, further comprising invalidation instruction means for outputting an instruction to invalidate the representative still image recorded on the tape-shaped recording medium by said recording means, wherein said recording means comprises: An image recording / reproducing apparatus, wherein upon receiving the invalid instruction from the invalid instruction means, erases the second identifier recorded on the tape-shaped recording medium. 5. The image recording / reproducing apparatus according to claim 4, further comprising change instruction means for outputting an instruction to change the representative still image, wherein the recording means receives the change instruction from the change instruction means. Erasing the second identifier recorded on the tape-shaped recording medium and then recording the second identifier at a tape position corresponding to the representative still image newly determined by the representative still image determining means. Characteristic image recording / reproducing device.