JP2000358220A - Reproduction device, reproduction method, recording and reproducing device, recording and reproducing method, and computer-readable storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a user to easily understand contents of a reproduced picture by reproducing the picture at a proper reproduction speed in response to the motion of the picture in the case of search reproduction of an image recording and reproducing device. SOLUTION: An image signal from a camera signal processing section 102 receives discrete cosine orthogonal transform, quantization and motion compensation via a memory 103 and variable length coding and a motion detection section 126 detects inter-frame motion information. The coded image data and the motion information are multiplexed and a disk 113 records the multiplexed data. In the case of search reproduction, the motion information is detected from the data reproduced from the disk 113. Reproduced image data to be displayed at a prescribed time interval are selected and outputted based on the motion information.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reproducing apparatus, a reproducing method, a recording / reproducing apparatus, a recording / reproducing method suitable for use in a camera-integrated recorder system using a recording medium such as a disk, and a computer readable recording medium used for them. It relates to a simple storage medium.

[0002]

2. Description of the Related Art As the capacity of disk media has rapidly increased, there has been proposed an apparatus for recording and reproducing not only audio but also video signals for a long time. For example, a recording format based on high-efficiency encoding processing such as MPEG is adopted, and 4M
Technologies capable of realizing an image recording / reproducing apparatus for 1 hour or more at a compressed data rate of about 10 bps to 10 Mbps have been developed at a consumer level. Further, with respect to the disk medium itself, there is a trend of steadily reducing the size and increasing the capacity, and the density of the image recording / reproducing apparatus is being further increased.

[0003] Conventionally, as such a device, MPEG
An image recording / reproducing apparatus using such a device is known. This device converts an image into a digital signal at the time of recording, converts the image from a spatial axis to a frequency axis by DCT (Discrete Cosine Orthogonal Transform) or the like, compresses the data by quantization and encoding processing,
It is recorded on a medium such as a magnetic tape or a disk. In addition, at the time of reproduction, the reproduction data from the medium is detected and EC
C (error correction), decoding, inverse quantization, and inverse DCT are performed to output a video signal on the spatial axis, and the video signal is viewed on various monitors.

In such an image recording / reproducing apparatus,
There is a special reproduction function, and when viewing an image, the recorded content can be viewed at a high speed or a rewind (hereinafter collectively referred to as a search) by changing the speed.

[0005]

However, the search function of the conventional image recording / reproducing apparatus extracts a predetermined reproduced image at fixed time intervals irrespective of a scene change (movement) or a scene change. And monitor output in a time series.

FIG. 8 shows the situation. FIG. 8A shows time-series data in which image data encoded by the MPEG method and recorded on a recording medium is reproduced, and a GOP (Group Of Picture) composed of a predetermined number of frames is shown.
Several frames forming the head part of e) are sequentially displayed as the video of FIG. 8B.

In the search in this case, since only the first few frames of the GOP serving as a delimiter of the image can be displayed, the update cycle of the display screen becomes coarse for an image having a scene change or movement, and a series of image correlation of the search image is performed. And the user could not clearly confirm the recorded contents. On the other hand, when a search is made for an image with little motion, the change in the image is small, giving the user unnecessary waiting time, and it is possible to appropriately and quickly know the "video break" and the "scene change" that should be originally checked. There was a problem that it was not possible.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and it is an object of the present invention to obtain an appropriate reproduction speed in which the contents of a reproduced image can be easily grasped during special reproduction such as search. The purpose is.

[0009]

In order to achieve the above object, in a reproducing apparatus according to the present invention, reproducing means for reproducing, from a recording medium, image data and motion data indicating the motion of an image related to the image data. And control means for selecting and outputting a partial screen from the reproduced image data based on the reproduced motion data.

In another reproducing apparatus according to the present invention, a reproducing means for reproducing image data and motion data indicating the motion of an image relating to the image data from a recording medium, and a speed corresponding to the time of recording by the reproducing means. A normal mode in which the image data is reproduced and the entire screen of the reproduced image data is output, and the image data is reproduced by the reproducing means at a speed higher than the normal mode, and based on the motion data, There is provided mode setting means for switching a mode between a search reproduction mode for selecting and outputting a part of screens in the reproduction image data.

A recording / reproducing apparatus according to the present invention is a recording / reproducing apparatus for recording / reproducing image data picked up by an image pickup means, which records the image data and control data indicating a recording start point of the image data. Recording means for recording on a medium, reproducing means for reproducing the image data and the control data from the recording medium, and control for selecting and outputting a partial screen in the reproduced image data based on the control data Means are provided.

Also, in the reproducing method according to the present invention,
A reproduction procedure of reproducing image data and motion data indicating the motion of an image related to the image data from a recording medium, and selecting a part of the screen from the reproduced image data based on the reproduced motion data; And a control procedure for outputting.

In another reproduction method according to the present invention, image data and motion data indicating the motion of an image related to the image data are reproduced from a recording medium at a speed corresponding to the time of recording, and the reproduced image data is displayed on a full screen. And reproducing the image data and the motion data from the recording medium at a faster speed than the normal mode and displaying a part of the screen in the reproduced image data based on the reproduced motion data. A reproduction procedure of the search reproduction mode for selecting and outputting the data and a mode setting procedure for switching between the normal mode and the search reproduction mode are provided.

Further, in the recording / reproducing method according to the present invention, a recording procedure for recording, on a recording medium, image data picked up by an image pickup means and control data indicating a recording start point of the image data; A reproduction procedure for reproducing the image data and the control data, and a control procedure for selecting and outputting a part of the screen in the reproduced image data based on the control data are provided.

Further, in the storage medium according to the present invention,
A reproduction process of reproducing image data and motion data indicating the motion of an image related to the image data from a recording medium, and selecting a partial screen from the reproduced image data based on the reproduced motion data; A program for executing a control process to be output is stored.

In another storage medium according to the present invention, image data and motion data indicating the motion of an image related to the image data are reproduced from the recording medium at a speed corresponding to the time of recording, and the entire screen of the reproduced image data is reproduced. And reproducing the image data and the motion data from the recording medium at a higher speed than the normal mode and displaying a part of the screen in the reproduced image data based on the reproduced motion data. A program for executing a reproduction process of a search reproduction mode to be selectively output and a mode setting process of switching between the normal mode and the search reproduction mode are stored.

In another storage medium according to the present invention, there is provided a recording process for recording, on a recording medium, image data captured by an imaging means and control data indicating a recording start point of the image data. A program for executing a reproduction process of reproducing the image data and the control data and a control process of selecting and outputting a part of the screen in the reproduced image data based on the control data is stored. I have.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) FIGS. 1 and 2 are block diagrams showing a camera-integrated recorder system as a recording / reproducing apparatus according to a first embodiment of the present invention. FIG. 1 shows a recording unit. Reference numeral 2 denotes a reproducing unit.

In the recording unit shown in FIG. 1, reference numeral 100 denotes an optical system such as a lens, 101 denotes an optical control system such as a diaphragm, focus, zoom, etc., 102 denotes a camera signal processing unit including a CCD (charge imaging device), 103 denotes a memory, 104 is a DCT unit, 10
5 is a quantization unit, 106 is a switch, 107 is a subtractor, 1
08 is an encoding unit, 109 is a multiplexing unit, 110 is an ECC
Unit, 111 is a modulation unit, 112 is a recording / reproducing head, 1
Reference numeral 13 denotes a recording medium, in which a disk 113 is used. 120 is an inverse quantization device, 121 is an inverse DCT device, 1
22 is an adder, 123 is a Zero data provider, 124
Is a memory, 125 is a motion compensation prediction unit, 126 is a motion detection unit, 127 is a CPU, 128 is a shooting start switch, 12
9 is a switch.

Next, the operation will be described. The subject image is
An optical signal whose predetermined brightness, angle of view, focus, and the like are controlled by the optical system 100 and the optical control system 101 is input to the camera signal processing unit 102. Where the optical signal is C
The signal is converted into an electric signal by a CD, further digitized, and subjected to signal processing such as appropriate gain adjustment, color separation, gradation correction, and white balance adjustment.

The image signals thus obtained are temporarily stored in the memory 103 and rearrange the screen. In the present embodiment, each frame of image data is divided into three pictures of an I picture, a P picture, and a B picture according to the encoding mode.
Each of these pictures is divided into three types, and an I picture is placed at the head, a P picture is placed at every third frame, and two B pictures are arranged between P pictures to form a GOP consisting of a total of 15 frames. Then, rearrangement is performed by controlling the output order of the data of each picture from the memory 103.

The state of the rearrangement will be described with reference to FIG. Input images to the memory 103 in FIG. 3A are Bzn−1,
Bzn, Ia0, Ba0, Ba1, Pa0, Ba2, B
a3, Pa1,..., the output image of the memory 103 in FIG. 3B is Ia0, Bzn-1, Bzn, P
a0, Ba0, Ba1, Pa1, Ba2, Ba3, Pa
2 ...

In FIG. 1, the switch 106 selects the a side when the image data is an I picture, and selects the b side when the image data is a P picture or a B picture. Therefore, when a blocked I picture is input, the switch 106 is selected to the a side and the DCT unit 104
Connected to. The DCT unit 104 performs DCT on the input image data in units of blocks composed of a plurality of pixels, converts the data into data on the frequency axis, and transmits the data to the quantization unit 105 in the next stage.

The quantization section 105 quantizes the frequency axis data so as to obtain a predetermined recording rate, and
8 and the inverse quantizer 120. Encoding unit 108
Performs variable-length encoding processing by Huffman encoding and run-length encoding, and transmits the result to the multiplexing unit 109.

On the other hand, the inverse quantization unit 120 inversely quantizes the input quantized data, and the inverse DCT unit 121 performs an inverse DCT process. The output signal of the inverse DCT unit 120 is supplied to the adder 122, and in the case of an I picture signal, the switch 129 selects the b side and outputs the Zero data
Obtain 3 to 0 data. In this case, the same value as when nothing is added, that is, the same value as the input image data is output from the adder 122 as the addition result. The result of this addition is stored in the memory 124.

Next, encoding of a P picture will be described. When image data of a P picture is input from the memory 103, the motion compensation prediction unit 125 reads the data of the I picture from the memory 124 and supplies the data of the I picture to the subtracter 107. The subtracter 107 subtracts the data from the memory 124 and the data of the input P picture in the memory 103 and supplies the data to the b side of the switch 106. At the time of encoding a P picture, the switch 106 is connected to the b side, and the subtraction output is supplied to the DCT unit 104 as an inter-frame difference signal, and thereafter undergoes an encoding process sequentially.

At this time, a side of the switch 129 is selected, and the motion compensation prediction unit 125 outputs prediction data from the I picture data from the memory 124 and supplies the prediction data to the a side of the switch 129. At the time of encoding a P picture, the switch 129 is set to the a side. Therefore,
The adder 122 adds the prediction data on the a side of the switch 129 and the output of the inverse quantization unit 121, and
4 is performed.

Next, encoding of a B picture will be described. When encoding a B picture, the switches 106 and 12
9 selects the same a side as the encoding of the P picture. What is characteristic here is that the motion compensation prediction unit 125
That is, motion prediction can be performed from both the I picture and the P picture from the data stored in the memory 29. Further, the motion detection unit 126 includes a motion compensation prediction unit 125
, The sum of the absolute values of the motion vectors obtained from is calculated and transmitted to the CPU 127 as motion information of the image.

The photographing start trigger switch 128 controls the CPU 127 to control the start or end of the photographing scene.
To perform mode transition of the system. CPU1
27 transmits the change point or the motion information from the motion detecting unit 126 to the multiplexing unit 109. The multiplexing unit 109 multiplexes scene switching (scene change) information or motion information with the data from the encoding unit 108 and transmits the data to the next ECC unit 110. ECC unit 1
In 10, a predetermined parity is added and sent to the modulation unit 111, and the modulation unit 111 supplies modulation data for recording on the disk 113 to the head 112.

In the above description, the motion information is obtained based on the prediction result of the motion compensation prediction unit 125. However, the motion information may be obtained from the result of camera shake correction processing.

Next, the reproducing section shown in FIG. 2 will be described. In FIG. 2, reference numeral 112 denotes the head of FIG. 1, and reference numeral 113 denotes the disk of FIG. 201 is a reproduction preamplifier, 202 is a demodulation unit, 203 is an ECC unit, 204 is a decoder unit, 205 is a memory, 206 is a motion detection unit, 207 is an operation unit, 208
Denotes a CPU, 209 denotes a buffer control unit, 210 denotes a buffer, and 211 denotes a disk drive unit.

Next, the operation will be described. Disk 11
3 is reproduced by the head 112 and amplified by the preamplifier 201 to a predetermined level. The demodulation unit 202 performs data detection and demodulation,
Reproduction demodulated data is obtained. After the ECC unit 203 performs error correction processing on the reproduced image data,
05 is written. The decoder unit 204 includes the memory 20
A predetermined decoding process is performed on the compressed image data stored in No. 5 according to the encoding at the time of recording. At this time, the motion detection unit 206 detects “motion information” multiplexed at the time of recording from the decoded output, and supplies this motion information to the CPU 208. The image data decoded by the decoding unit 204 is output via the buffer 210.

The memory 205 can store several GOPs (10 GOPs in this embodiment) of compressed image data.
The buffer 210 can store several frames (20 frames in the present embodiment) of decoded image data. The buffer control circuit 209 controls writing and reading of image data to and from the buffer 210 based on a control signal from the CPU 208.

First, the operation during normal reproduction will be described. When there is an instruction of the normal reproduction mode from the operation unit 207,
The CPU 208 controls the disk drive unit 211 to rotate the disk 113 at a speed according to the time of recording. And
Image data reproduced from the disk 113 by the pickup 112 is transmitted to a preamplifier 201, a demodulation unit 202, and an EC.
The data is written to the memory 205 via C203.

The CPU 208 operates in the memory 2 during normal reproduction.
The decoding unit 204 is controlled to read and decode the image data written in 05 in the order of reproduction, and the image data decoded by the decoding unit 204 is written to the buffer 210.

In the normal reproduction mode, the CPU 208 controls the buffer control unit 209 to
4 so as to read and output all the image data in the input order.

Next, the operation in the search reproduction mode will be described. When a search reproduction mode is instructed from the operation unit 207, the CPU 208 controls the disk drive unit 211 to rotate the disk 113 at a speed 10 times or more that of the normal reproduction mode, and at a speed of 10 times or more that of the normal reproduction mode. To make data reproducible. The image data reproduced from the disk 113 by the pickup 112 is supplied to the preamplifier 201, the demodulation unit 202, and the ECC 20 as described above.
3. The data is written to the memory 205 via the decoding unit 204.

In the search reproduction mode, the CPU 208 controls reading of the encoded image data from the memory 205 and writing and reading of the image data in the buffer 210 in accordance with the motion information of each frame obtained from the motion detecting section 206. .

That is, based on the image data of 10 GOPs (150 frames) written in the memory 205, the CPU 208 buffers only the image data of the frame with a large motion from the image data of 10 GOPs stored in the memory 205. Decoding unit 20 so as to write to
4 and the buffer control unit 209 are controlled.

For example, when 10 × speed reproduction is to be performed in the search reproduction mode, the 10G
Of the image data for OP (150 frames),
The buffer control unit 209 is controlled so that 15 frames of image data, which is / 10, are selected and extracted in accordance with the movement, and written into the buffer 210.

This operation will be described with reference to FIG. FIG.
(A) shows image data stored in the memory 205,
(B) shows the state of the motion information of each image data in (a), and (c) shows the video to be displayed. CPU 20
Reference numeral 8 controls the buffer control unit 209 so as to store 15 frames of image data centered on the frame with the largest motion among the image data of several GOPs. FIG.
In (b), the image data of the frame in the range of the dotted line is written into the buffer 210.

Then, the CPU 208 controls the buffer 210
The buffer control unit 209 is controlled to read out the image data of each frame written in (1) at a timing corresponding to a normal time axis (30 frames / second).

As described above, in the present embodiment, at the time of search reproduction, all the image data recorded on the disc are read at high speed, and the image data is read from all the reproduced image data read at high speed in accordance with the movement. Is selected, it is possible to provide comfortable search reproduction according to the movement of the reproduced image.

In the present embodiment, the capacities of the memory 205 and the buffer 210 are set to 10 GOP and 20 frames, respectively, but these can be appropriately changed depending on the search reproduction speed.

(Second Embodiment) FIG. 5 shows a second embodiment of the present invention.
FIG. 3 is a block diagram showing a playback unit of the camera-integrated recorder system according to the embodiment of the present invention. Parts corresponding to those in FIG. The configuration of the recording unit is the same as that of FIG. In FIG. 5, reference numeral 212 denotes a motion variance determination unit.

Next, the operation will be described. As in the case of FIG. 2, the image data recorded on the disk 113 is reproduced by the head 112, amplified, detected, demodulated, and corrected for errors.
05, a predetermined decoding process of the compressed data is performed. The motion variance determination unit 211 determines variance in the time axis direction based on the motion information detected from the decoded output.

Next, the operation in the search reproduction mode will be described. When a search reproduction mode is instructed from the operation unit 207, the CPU 208 controls the disk drive unit 211 to rotate the disk 113 at a speed 10 times or more that of the normal reproduction mode, and at a speed of 10 times or more that of the normal reproduction mode. To make data reproducible. The image data reproduced from the disk 113 by the pickup 112 is supplied to the preamplifier 201, the demodulation unit 202, and the ECC 20 as described above.
3. The data is written to the memory 205 via the decoding unit 204.

In the search reproduction mode, the CPU 208 controls reading of coded image data from the memory 205 and writing and reading of image data to and from the buffer 210 in accordance with the motion variance information obtained from the motion variance determination unit 212.

This operation will be described with reference to FIG. FIG. 6 shows the state of the reproduced image data, (b) shows the state of the motion information of each frame, and (c) shows the video to be displayed. In the motion variance determination unit 211, in units of 10 GOPs,
In this 10 GOP image data, a period σ where the value of the motion information exceeds a predetermined value A is detected and output to the CPU 208. The CPU 208 determines the position of the σ in the 10 GOP, the period of the σ, and the search / reproduction speed.
5. Select the frame to be written to 5.

That is, in FIG. 6, σ is 3 of the second GOP.
Assuming that the frame extends from frame 7 to frame 7 of the fourth GOP, the CPU 208 controls the buffer control unit 209 so that image data for 15 frames is selected and written to the buffer 210 at even intervals during this period. .

Therefore, when the period of the motion variance σ is long, the frame period of the image data written in the memory 205 is long, and when the period of σ is short, the memory 20
5, the frame period of the image data to be written becomes shorter.

The 10 GOP stored in the memory 205
If the number of frames whose motion information value exceeds the predetermined value A is 15 frames or less in the image data of
As in the first embodiment, 15 frames of image data are written in the buffer 210 at each of 7 frames before and after the frame with the largest motion as the center.

As described above, in the present embodiment, the variance of the motion is detected based on the motion information, and the reproduced image data is selected and output according to the variance of the motion. Search can be performed.

(Third Embodiment) FIG. 7 shows a third embodiment of the present invention.
FIG. 6 is a block diagram showing a playback unit of the camera-integrated recorder system according to the embodiment, and parts corresponding to those in FIGS. 2 and 5 are denoted by the same reference numerals, and redundant description is omitted. The configuration of the recording unit is the same as that of FIG. In FIG.
Is a scene detection unit.

Next, the operation will be described. As in the case of FIG. 2, the image data recorded on the disk 113 is reproduced by the head 112, amplified, detected, demodulated, and corrected for errors.
05, a predetermined decoding process of the compressed data is performed.
The scene detection unit 213 extracts information indicating a scene change such as “shooting start” or “shooting stop” multiplexed in the decode output.

Next, the operation in the search reproduction mode will be described. When a search reproduction mode is instructed from the operation unit 207, the CPU 208 controls the disk drive unit 211 to rotate the disk 113 at a speed 10 times or more that of the normal reproduction mode, and at a speed of 10 times or more that of the normal reproduction mode. To make data reproducible. The image data reproduced from the disk 113 by the pickup 112 is supplied to the preamplifier 201, the demodulation unit 202, and the ECC 20 as described above.
3. The data is written to the memory 205 via the decoding unit 204.

In the search / reproduction mode, the CPU 208 reads out coded image data from the memory 205 and writes image data into the buffer 210 according to scene change information obtained from the scene detection unit 213.
Controls reading.

That is, the CPU 208 detects whether or not image data of a scene change portion exists in the image data written in the memory 205 in accordance with the scene change information. The buffer control unit 209 is controlled so that image data for a frame is written into the buffer 210.

If there is no scene change, the buffer control unit 209 is controlled so that the image data of the first 1 GOP of the image data for 10 GOPs written in the memory 205 is written into the buffer 210.

As described above, in the present embodiment, the image data is selected and output according to the scene change information in the reproduced image data, so that the search reproduction according to the scene change of the reproduced image can be realized.

In each of the above-described embodiments, the disc is rotated and played back at a higher speed in the search playback mode than in the normal playback. In addition, for example, the disc is rotated once every n rotations in the normal playback. , The data may be read out n times during search reproduction without changing the rotation speed of the disk during normal reproduction.

Next, a storage medium according to another embodiment of the present invention will be described. The systems shown in FIGS. 1, 2, 5, and 7 can be configured by hardware,
It can be configured by a computer system including a CPU and a memory. When constituted by a computer system, the memory constitutes a storage medium according to the present invention. The storage medium stores a program for executing the processing procedure for controlling the operation described in each of the above embodiments.

As the storage medium, ROM, R
Semiconductor memory such as AM, optical disk, magneto-optical disk,
A magnetic medium or the like may be used, and these may be configured and used in a CD-ROM, a floppy disk, a magnetic tape, a magnetic card, a nonvolatile memory card, or the like.

Therefore, this storage medium is used in another system or apparatus other than the system or apparatus shown in FIGS. 1, 2, 5, and 7, and the system or computer is used to store the program code stored in this storage medium. By reading and executing the same, the same functions as those of the above embodiments can be realized, the same effects can be obtained, and the object of the present invention can be achieved.

An OS running on a computer
Perform part or all of the processing, or after the program code read from the storage medium is written into the memory provided in the extended function board inserted into the computer or the extended function unit connected to the computer. ,
Even when the CPU or the like provided in the above-mentioned extended function board or extended function unit performs a part or all of the processing based on the instruction of the program code, the same functions as those of the above embodiments can be realized and the same functions can be realized. The effect can be obtained, and the object of the present invention can be achieved.

[0066]

As described above, according to the present invention,
Since part of the reproduced image data is selected and output based on the motion data indicating the motion of the image data, a moving scene can be selected and output even during special reproduction such as search reproduction, and the recorded scene can be recorded. The user can easily check the contents of the image data.

According to another aspect of the present invention, since a part of the reproduced image data is selected and output based on the data indicating the recording start point of the image data, there is movement even during special reproduction such as search reproduction. The switching portion of the scene can be selected and output, and the contents of the recorded image data can be easily confirmed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a recording unit of a recording and reproducing device according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a reproducing unit of the recording / reproducing apparatus according to the first embodiment of the present invention.

FIG. 3 is a configuration diagram for explaining image rearrangement.

FIG. 4 is a configuration diagram illustrating display of a search image according to the first embodiment.

FIG. 5 is a block diagram showing a reproducing unit of a recording / reproducing apparatus according to a second embodiment of the present invention.

FIG. 6 is a configuration diagram illustrating display of a search image according to a second embodiment.

FIG. 7 is a block diagram showing a reproducing unit of a recording / reproducing device according to a third embodiment of the present invention.

FIG. 8 is a configuration diagram for explaining display of a conventional search image.

[Explanation of symbols]

 102 Camera signal processing unit 103 Memory 104 DCT unit 105 Quantization unit 106 Switch 108 Encoding unit 109 Multiplexing unit 112 Head 113 Medium 125 Motion compensation prediction unit 126 Motion detection unit 127 CPU 128 Imaging start trigger switch 202 Demodulation unit 204 Decoder unit 205 memory 206 motion detection unit 207 search command 208 CPU 209 buffer control unit 210 buffer 211 disk drive unit 212 motion distribution determination unit 213 scene detection unit

Claims (19)

[Claims] 1. A reproducing means for reproducing, from a recording medium, image data and motion data indicating the motion of an image related to the image data, and a part of the reproduced image data based on the reproduced motion data. A playback device, comprising: control means for selecting and outputting a screen. 2. The reproducing apparatus according to claim 1, wherein the control unit further selects the screen to be output according to a reproduction speed of the image data. 3. The reproducing apparatus according to claim 2, wherein the control means determines the number of screens to be output according to a reproduction speed of the image data. 4. The reproducing apparatus according to claim 1, wherein the control means selects the screen to be output for each predetermined amount of the reproduced image data. 5. The reproducing apparatus according to claim 4, wherein the control means has a memory, and writes only the image data of the selected screen into the memory. 6. The reproducing apparatus according to claim 4, wherein said control means selects a predetermined number of screens in the vicinity of a screen having a large motion from the predetermined amount of image data. 7. The reproducing apparatus according to claim 4, wherein said control means selects a screen having a motion magnitude of a predetermined value or more from said predetermined amount of image data. 8. The reproducing apparatus according to claim 1, wherein the control means selects the screen to be output at predetermined intervals. 9. The apparatus according to claim 8, wherein the control unit determines the predetermined interval based on the motion data.
The playback device as described in the above. 10. The reproducing apparatus according to claim 1, wherein the image data is encoded using the motion data, and further comprising decoding means for decoding the reproduced image data. 11. The reproducing apparatus according to claim 10, wherein said image data is predictively encoded at a frame interval, and said motion data is data indicating motion between said frames. 12. A reproducing means for reproducing, from a recording medium, image data and motion data indicating the motion of an image relating to the image data, wherein the reproducing means reproduces the image data at a speed corresponding to the time of recording and reproduces the image data. A normal mode in which the entire screen of the reproduced image data is output, and the reproducing means reproduces the image data at a higher speed than the normal mode, and displays a part of the screen in the reproduced image data based on the motion data. A reproduction apparatus, comprising: mode setting means for switching a mode between a selection reproduction mode and a search reproduction mode. 13. A recording / reproducing apparatus for recording / reproducing image data captured by an image capturing means, comprising: a recording means for recording the image data and control data indicating a recording start point of the image data on a recording medium; A reproducing unit that reproduces the image data and the control data from the recording medium; and a control unit that selects and outputs a partial screen in the reproduced image data based on the control data. Recording and reproducing device. 14. A playback procedure for playing back image data and motion data indicating the motion of an image related to the image data from a recording medium, wherein a part of the reproduced image data is And a control procedure for selecting and outputting a screen. 15. A normal mode reproduction procedure for reproducing image data from a recording medium and motion data indicating the motion of an image relating to the image data at a speed corresponding to the time of recording, and outputting a full screen of the reproduced image data; Search playback mode playback in which the image data and motion data are played back from the recording medium at a faster speed than in the normal mode, and a partial screen in the playback image data is selected and output based on the played back motion data. And a mode setting procedure for switching between the normal mode and the search reproduction mode. 16. A recording procedure for recording, on a recording medium, image data captured by an imaging unit and control data indicating a recording start point of the image data, and reproducing the image data and the control data from the recording medium. A recording / reproducing method, comprising: a reproducing procedure for selecting a part of screens in the reproduced image data based on the control data. 17. A reproducing process for reproducing, from a recording medium, image data and motion data indicating the motion of an image related to the image data, and performing a part of the reproduced image data on the basis of the reproduced motion data. A computer-readable storage medium storing a program for executing a control process of selecting and outputting a screen. 18. A normal mode reproduction process for reproducing image data and motion data indicating the motion of an image related to the image data from a recording medium at a speed corresponding to the time of recording, and outputting a full screen of the reproduced image data; Reproduction in search reproduction mode in which the image data and motion data are reproduced from the recording medium at a higher speed than in the normal mode, and a partial screen in the reproduced image data is selected and output based on the reproduced motion data. A computer-readable storage medium storing a program for executing a process and a mode setting process for switching between the normal mode and the search reproduction mode. 19. A recording process for recording, on a recording medium, image data captured by an imaging unit and control data indicating a recording start point of the image data, and reproducing the image data and the control data from the recording medium. A computer-readable storage medium storing a program for executing a reproducing process to perform a control process of selecting and outputting a partial screen in the reproduced image data based on the control data.