JP3621579B2 - Image recording / playback device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement in an image recording / reproducing apparatus for recording / reproducing image data on / from a recording medium capable of recording a large amount of data.
[0002]
[Prior art]
As is well known, in recent years, optical discs are widely used as digital information recording media. And this optical disc is currently trending to further increase in capacity with the improvement of the performance of optical pickups by the development of laser light with a short wavelength and the progress of high-density recording technology and data compression technology. Therefore, the amount of information that can be recorded has increased dramatically.
[0003]
For example, a CD (Compact Disk) records about 650 MB (Mega Bytes) of digital information on a 12 cm diameter disk using a laser beam having a wavelength of 780 nm, whereas a DVD is the same as a CD. Using a laser beam having a wavelength of 650 nm, digital information of about 4.7 GB (Giga Bytes), which is approximately 7 times as large as a CD, can be recorded on one size of disk.
[0004]
The amount of recorded information on such an optical disc can be further increased by using a data compression technique based on MPEG (Moving Picture Image Coding Experts Group) 2 which is an international standard for media-integrated video compression. The number of moving image data, audio data, and sub-image data representing subtitles and the like corresponding to a movie for about 2 hours is increased.
[0005]
In addition, this optical disc is not limited to a read-only one, and a disc capable of writing data, such as a DVD-RAM (Random Access Memory), has been developed. For this reason, in the future, it is expected that a recording / reproducing apparatus using this type of optical disk as a recording medium will replace the current VCR (Video Cassette Recorder) using a magnetic tape as a recording medium.
[0006]
Thus, by replacing the sequential access tape as a recording medium with a random access disk, the time required for data search can be greatly reduced. That is, in general, in a VCR, a CISS flag is realized by recording a VISS flag on a tape at the time of recording and searching the VISS flag by reproducing the tape at high speed.
[0007]
For this reason, the VCR sometimes searches from one end of the tape to the other end, and a considerably long time is required to reach the target position. If a VISS flag is recorded at a plurality of locations on a single tape, the VISS flag is sequentially searched to search for a target position, so that a long time is required for the search.
[0008]
On the other hand, on an optical disc, data is recorded in units of sectors, and the address of a sector that can be a target position is registered in a TOC (Table of Contents) area. Therefore, the optical disk recording / reproducing apparatus can perform a quick search by moving the optical pickup toward the target position in the radial direction of the optical disk while reading the address.
[0009]
Further, in this type of recording / reproducing apparatus, even if a plurality of target position addresses are registered in the TOC area of the optical disc, if the user selects a predetermined target position address, another target position is searched. Therefore, it is possible to search only the target position selected by the user, and it is possible to realize a quick search in this respect.
[0010]
By the way, in a conventional recording / reproducing apparatus having a search function for an optical disc as described above, a user inputs, for example, a title of a recorded program as character information as a search information, and when searching, By selecting a desired title from a plurality of titles displayed in a list on the screen, an address of a desired destination position registered in the TOC area is selected.
[0011]
However, in the conventional recording / reproducing apparatus, since all the titles to be used at the time of searching must be input by the user with character codes, there is a problem that the input operation becomes complicated when the number of titles increases. In addition, since all titles are displayed in the form of characters, even if a user records a plurality of programs such as movies and dramas from a television broadcast on an optical disc and sets a search title for each program. Therefore, it is difficult to accurately select a target program from the title display of only characters, and there is a disadvantage that erroneous selection is likely to occur.
[0012]
[Problems to be solved by the invention]
As described above, the conventional recording / reproducing apparatus has a problem that the input operation becomes complicated as the number of titles increases because the user has to input the search titles one by one. Further, since the title is set only by characters, there is a problem that the user is unsuitable for selecting a program mainly composed of images, and an error is likely to occur in the selection.
[0013]
Therefore, the present invention has been made in consideration of the above circumstances. A cut is detected from an image recorded on a recording medium, automatically set as a search title, and a desired program is selected by looking at the title of the cut image. It is an object of the present invention to provide an extremely good image recording / reproducing apparatus that makes it possible to select titles and facilitates the input operation of titles and enables a user to select a desired program accurately.
[0014]
[Means for Solving the Problems]
The image recording / reproducing apparatus according to the present invention is intended for recording and reproducing moving image data on a recording medium. Then, a cut in which the image changes greatly between successive screens from the moving image data is detected, and a cut detection holding unit that holds image data corresponding to the detected cut, and a plurality of pieces held in the cut detection holding unit Each image data corresponding to the cutRecording means for recording on the recording medium, and reading each image data corresponding to a plurality of cuts recorded by the recording means from the recording medium,Display means for displaying on a multi-screen as a menu for selection is provided.
[0015]
According to the configuration as described above, a cut in which an image changes greatly between continuous screens from moving image data is detected, and image data corresponding to the detected cut is detected.While recording on a recording medium,Since the menu for selection is displayed on a multi-screen, even if the recording medium is large and many programs are recorded, it is easy to input the title and the program desired by the user can be selected. It becomes possible to select accurately.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In FIG. 1, reference numeral 11 denotes an optical head having a function of writing and reading data on an optical disk (not shown). First, reproduction of an optical disc will be described. Data read from the optical disk by the optical head 11 is supplied to the data processor circuit 12, subjected to demodulation and error correction processing, and then supplied to the separation circuit 13.
[0018]
As will be described in detail later, the output of the data processor circuit 12 is a pack format data string that constitutes a time-division multiplexed MPEG2 program stream, as shown in FIG. Then, the separation circuit 13 divides the input data string into a main image pack composed of main image data, a sub image pack composed of sub image data, an audio pack composed of audio data, and a control pack composed of control data. Divided into four.
[0019]
Thereafter, the separation circuit 13 refers to the transfer time and ID (Identifier) data indicating the type of data included in each of the main image, sub image, audio, and control data, and the main image, sub image, and audio. Are transferred to the main image decoder 14, the sub image decoder 15 and the audio decoder 16, respectively, and the control data is transferred to a memory 18 that can be referred to by a system CPU (Central Processing Unit) 17.
[0020]
Here, the main image decoder 14 decodes the input main image data and outputs the result to the image processing circuit 19. The sub image decoder 15 decodes the input sub image data and outputs it to the image processing circuit 19. The image processing circuit 19 generates image data obtained by mixing the main image data decoded by the main image decoder 14 and the sub image data decoded by the sub image decoder 15.
[0021]
The image data generated by the image processing circuit 19 is analogized by a D / A (Digital / Analogue) conversion circuit 20 and then supplied to a monitor (not shown) via an output terminal 21 for image display. Is done. The audio decoder 16 performs a decoding process on the input audio data. The audio data decoded by the audio decoder 16 is converted into an analog signal by the D / A conversion circuit 22 and then supplied to a speaker (not shown) via the output terminal 23 to be played.
[0022]
Next, data recording on the optical disc will be described. That is, the signals corresponding to the main image, audio, and sub-image to be recorded on the optical disc are obtained from an external television receiver, video camera, etc. (not shown), respectively, and are input via input terminals 24, 25, and / D (Analogue / Digital) conversion circuit 27, 28, 29 is supplied. These A / D conversion circuits 27, 28, and 29 digitize signals input through the input terminals 24, 25, and 26 or program data selected by the television tuner 30, respectively. .
[0023]
The main image data output from the A / D conversion circuit 27 is encoded by the main image encoder 31 and supplied to the multiplexing circuit 32. The audio data output from the A / D conversion circuit 28 is encoded by the audio encoder 33 and supplied to the multiplexing circuit 32. Further, the sub image data output from the A / D conversion circuit 29 is encoded by the sub image encoder 34 and supplied to the multiplexing circuit 32.
[0024]
The multiplexing circuit 32 packetizes and packs the main image, audio, and sub-image data encoded by the main image encoder 31, the audio encoder 33, and the sub-image encoder 34, respectively. As a sub-image pack, time division multiplexing is performed so as to form an MPEG2 program stream.
[0025]
The data string output from the multiplexing circuit 32 is supplied to the file formatter 35, converted into a file conforming to a file structure that can be recorded and reproduced by the recording / reproducing apparatus, and then supplied to the volume formatter 36. The data format conforms to the volume structure that can be recorded / reproduced by the recording / reproducing apparatus. Here, the volume formatter 36 adds reproduction control information and the like for reproducing the data filed by the file formatter 35.
[0026]
Thereafter, the data output from the volume formatter 36 is supplied to a disk formatter 37, converted from a logical formatter in the file formatter 35 and the volume formatter 36 into a physical formatter for recording on an optical disk, and the optical head 11 Is written on the optical disc.
[0027]
Here, in FIG. 1, reference numeral 38 denotes a time measuring circuit, which counts date data such as year, month, day, hour, minute, second and day of the week. Reference numeral 39 denotes a cut image holding circuit which holds image data of a scene (cut) in which an image changes greatly between successive screens. When executing logical formatter processing, the cut image data is stored in the file formatter 35. Output. The cut image holding circuit 39 can also hold cut image data designated by the user.
[0028]
Further, in FIG. 1, reference numeral 40 denotes a recording start position holding circuit which temporarily holds information indicating the position where program recording has been started on the optical disc, and is stored in the file formatter 35 when executing the logical formatter processing. Recording start position data is output. Reference numeral 41 denotes a key input unit operated by the user.
[0029]
FIG. 2 shows a packed data string output after the data recorded on the optical disk is read by the optical head 11 and subjected to demodulation and error correction processing by the data processor circuit 12. The pack row includes a control pack, a main image pack including main image data (main image packet), an audio pack including audio data (audio packet), a sub image pack including sub image data (sub image packet), and menu data. And a menu pack including a playback position pointer.
[0030]
Of these packs, except for the control pack, a padding packet for complementing the pack is added when the pack size is smaller than the specified pack size. The control pack includes a DSI (Data Search Information) packet including search information used for data search and the like, and a PCI (Presentation Control Information) packet including control information for reproduction data.
[0031]
FIG. 3 shows details of the main image encoder 31. In FIG. 3, reference numeral 42 denotes an input terminal to which main image data output from the A / D conversion circuit 27 is supplied. The main image data supplied to the input terminal 42 is subjected to an encoding process for compressing the data amount by the encoding circuit 43, and a data format after compression is generated by the multiplexing circuit 44. The transmission data amount is processed so as to be kept constant, dummy bits are inserted and error correction codes are added in the transmission code circuit 46, and then output to the multiplexing circuit 32 via the output terminal 47.
[0032]
FIG. 4 shows details of the encoding circuit 43. That is, the main image data supplied to the input terminal 42 is supplied to the subtraction circuit 48 and the cut detection circuit 49, respectively. Of these, the subtracting circuit 48 performs a subtracting process, which will be described later, and its output is compression-coded by the orthogonal transform circuit 50 and the quantizing circuit 51 and supplied to the multiplexing circuit 44 via the output terminal 52. . Note that the orthogonal transform circuit 50 and the quantization circuit 51 are controlled by an encoding control circuit 53.
[0033]
The output of the quantization circuit 51 is returned to the image data before the orthogonal transformation by the inverse quantization circuit 54 and the inverse orthogonal transformation circuit 55, and then the subtraction circuit 48 through the prediction memory 56 and the in-loop filter 57. Subframe coding processing is performed by subtracting from the main image data at the input terminal 42 and supplying the difference to the orthogonal transform circuit 50.
[0034]
Further, the image data read from the prediction memory 56 is supplied to the cut detection circuit 49. The cut detection circuit 49 detects the cut screen by comparing the main image data supplied to the input terminal 42 with the image data read from the prediction memory 56, and outputs the cut image data to the output terminal 58. To the memory 18.
[0035]
FIG. 5 is a flowchart for explaining the cut image recording operation in the recording / reproducing apparatus shown in FIG. In this recording / reproducing apparatus, an optical disk capable of recording / reproducing is mounted, and the system CPU 17 acquires the recorded contents of the optical disk and the unrecorded area start position in advance when the power is turned on or the optical disk is mounted. To do.
[0036]
First, when a recording request from the user is generated and started (step S1), the system CPU 17 indicates the unrecorded area start position on the optical disc or the recording start position designated by the user in step S2. Data is stored in the recording start position holding circuit 40.
[0037]
Thereafter, the system CPU 17 obtains channel data from the television tuner 30 at the start of recording of the television program in step S3. Each data encoded by the main image encoder 31, the audio encoder 33, and the sub image encoder 34 is supplied to the multiplexing circuit 32 and converted into a pack / packet format as shown in FIG. A data column is created.
[0038]
Next, the system CPU 17 displays one or more main image packs containing cut images [I picture (intra-frame encoded image)] automatically detected by the main image encoder 31 in step S4, for example, in FIG. The data is converted into a VOBU (Video Object Unit) format as shown, and stored in the cut image holding circuit 39 as cut image data.
[0039]
In this case, the cut image data is created as one or more VOBUs having a playback unit of about 0.5 seconds during normal playback. This VOBU is configured by arranging a control pack at the head, and subsequently arranging a plurality of main image packs and one or more sub-image packs.
[0040]
As described above, the control pack is composed of a DSI packet including search information used for data search and the like, and a PCI packet including control information for reproduction data. The main image pack always includes an I picture that is an intra-frame encoded image constituting the cut image.
[0041]
Next, in step S5, the cut image data previously stored in the cut image holding circuit 39 is converted into a file such as “TITLE — 01.PIC” as shown in FIG. In step S6, the recording start position data stored in the recording start position holding circuit 40 in step S2 is converted into a file such as “TITLE — 01.PTR” as shown in FIG. Further, in step S7, the data sequence time-division multiplexed by the multiplexing circuit 32 in step S3 is converted into a title data file such as “VTS — 01_1.VOB” as shown in FIG.
[0042]
In step S8, the data filed in the file formatter 35 is formed in a directory structure as shown in FIG. 7 by the volume formatter 36, and is logically formatted to be compatible with this recording / reproducing apparatus. Thereafter, in step S9, the data logically formatted by the volume formatter 36 is converted into a physical format by the disk formatter 37, recorded on the optical disk via the optical head 11, and the process is terminated (step S10).
[0043]
Here, automatic detection of cut images in the cut detection circuit 49 will be described. That is, in the image as shown in FIG. 8, an 8 × 8 or 16 × 16 macroblock is set, and a difference value of each pixel is calculated between the original image data and the image data of the previous frame.
D (x, y) = Σ_{i, j = 1}  ^{N, N}  | Original image data-Previous image data |
(Range: horizontal direction i = 1 to N, vertical direction j = 1 to N, N = 8 or 16)
Further, in each image, a difference value in the entire image is calculated.
[0044]
AD = Σ₁  ^N  D (x, y)
Here, when the value of AD is larger than the predetermined threshold value, it is determined that the scene has changed greatly in the images before and after the continuous image, and the image data is stored in the cut image holding circuit 39.
[0045]
Depending on the threshold value, there may be a case where the number of change points is too large or too small. Therefore, the threshold value can be set by the user. Furthermore, the threshold value can be automatically changed so as to become a certain number of change points within a certain time.
[0046]
Next, FIG. 9 shows a flowchart for explaining the reproducing operation of the optical disc in which the cut image is recorded as a file as described above. That is, when the optical disk is loaded in the recording / reproducing apparatus shown in FIG. 1 and started (step S11), the system CPU 17 reads the recorded contents of the optical disk in step S12, and at the time of recording, as shown in FIG. A cut image file (such as TITLE — 01.PIC) and a recording start position file (such as TITLE — 01.PTR) registered in the optical disc with a simple directory structure are searched.
[0047]
In step S13, the system CPU 17 displays all cut image files registered in the optical disc on the monitor as user selection menus. In this case, the system CPU 17 thins the cut image data and reduces the display size to an appropriate size for multi-screen display on the monitor.
[0048]
If there are many cut image files and they cannot be displayed on a single screen even if they are displayed on multiple screens, for example, as shown in FIG. 10, a plurality of screens containing four cut images in one screen are generated. The menu configuration is such that each screen is switched and displayed.
[0049]
Thereafter, in step S14, when the user selects a desired cut image by operating, for example, an arrow key or a numeric key of the key input unit 41, and determines by operation of the enter key or the like, the system CPU 17 determines in step S15. Then, the program corresponding to the cut image selected and determined by the user is reproduced from the start position described in the recording start position file, and is ended (step S16).
[0050]
Here, the directory structure shown in FIG. 7 will be described. Under the root directory hierarchy, there are three directories “VIDEO_TS”, “TITLE_PIC”, and “TITLE_PTR”. In the “VIDEO_TS” directory, an information file “VIDEO_TS.IFO” in which control information related to the entire information file recorded on the optical disc is recorded, and an information file “Recording control information etc. for each file” VTS — 01 — 0.IFO ”and reproduction data“ VTS — 01 — 1.VOB ”,“ VTS — 01 — 2.VOB ”, and the like are included.
[0051]
The “TITLE_PIC” directory includes cut image data files “TITLE — 01.PIC” and “TITLE — 02.PIC”, which are cut image data registered by the recording / reproducing apparatus. Further, in the “TITLE_PTR” directory, there are recording start position data files “TITLE — 01.PTR”, “TITLE — 02.PTR”, etc. each describing the recording start position of each cut image registered in the “TITLE_PIC” directory. include.
[0052]
Further, in FIG. 7, the PIC file in the “TITLE_PIC” directory and the PTR file in the “TITLE_PTR” directory have a one-to-one correspondence, and the file names are “TITLE — 01.PIC”, “TITLE — 02. PIC "and" TITLE_03.PIC "are regularly added, and corresponding PTR files are also named according to the same rule, such as" TITLE_01.PTR "," TITLE_02.PTR "," TITLE_03.PTR ". Is granted.
[0053]
When displaying a menu screen combining a plurality of cut images during reproduction, PIC files are sequentially extracted from the “TITLE_PIC” directory and displayed on the screen. For example, when a user designates a reduced image of a cut image to be reproduced by a remote controller or the like, the PTR file corresponding to the PIC file is taken out from the “TITLE_PTR” directory, and the reproduction is started from the designated cut image by the time information in the PTR file. Start.
[0054]
FIG. 10 described above shows an example in which four cut images are displayed as menus on the same screen. In this case, the four cut image files “TITLE — 01.PIC” to “TITLE — 04.PIC” shown in FIG. 7 are the car 1, the airplane 2, the Shinkansen 3, Each character cut image is registered on the optical disc.
[0055]
The system CPU 17 retrieves this optical disk when it is loaded, thereby confirming the number of recorded files (cuts), and storing the numerical data in the memory 18 via the data processor circuit 12. Thereafter, the main image pack and the sub image pack output from the separation circuit 13 are decoded by the main image decoder 14 and the sub image decoder 15, respectively, and then the data is stored in the frame memory or the like built in the image processing circuit 19. As a result, the menu screen shown in FIG. 10 is displayed on the monitor.
[0056]
In addition, the head image data for each cut is actually searched only by using the recording start position file (TITLE — 01.PTR) without using the cut image file (TITLE — 01.PIC, etc.) registered in the directory structure as shown in FIG. The new picture shown in FIG. 10 can be displayed on the monitor in the same manner as described above by executing I picture still picture or VOBU unit same picture reproduction.
The present invention is not limited to the above-described embodiment, and can be variously modified and implemented without departing from the scope of the invention.
[0057]
【The invention's effect】
As described above in detail, according to the present invention, a cut is detected from an image recorded on a recording medium, automatically set as a search title, and a desired program can be selected by looking at the title of the cut image. By doing so, it is possible to provide a very good image recording / reproducing apparatus that facilitates the input operation of the title and enables the user to accurately select the desired program.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an embodiment of an image recording / reproducing apparatus according to the present invention.
FIG. 2 is a view for explaining a packed data string output from the data processor circuit according to the embodiment;
FIG. 3 is a block configuration diagram showing details of a main image encoder in the embodiment.
FIG. 4 is a block configuration diagram showing details of an encoding circuit in the main image encoder.
FIG. 5 is a flowchart for explaining a cut image recording operation according to the embodiment;
FIG. 6 is a view for explaining cut image data converted into a VOBU format according to the embodiment;
FIG. 7 is a view for explaining a directory structure of data recorded on the optical disc in the embodiment;
FIG. 8 is a view for explaining automatic detection of a cut image according to the embodiment.
FIG. 9 is a flowchart for explaining a cut image reproduction operation according to the embodiment;
FIG. 10 is a view for explaining an example of a menu screen in the embodiment.
[Explanation of symbols]
11 ... Optical head,
12: Data processor circuit,
13: separation circuit,
14: Main image decoder,
15 ... Sub-picture decoder,
16: Audio decoder,
17 ... System CPU,
18 ... Memory,
19: Image processing circuit,
20 ... D / A conversion circuit,
21 ... Output terminal,
22 ... D / A conversion circuit,
23: Output terminal,
24-26 ... input terminals,
27-29 ... A / D conversion circuit,
30 ... Television tuner,
31. Main image encoder,
32 ... Multiplex circuit,
33 ... Audio encoder,
34. Sub-image encoder,
35 ... File formatter
36 ... Volume formatter
37 ... Disc formatter,
38 ... Timing circuit,
39: Cut image holding circuit,
40. Recording start position holding circuit,
41 ... Key input part,
42 ... input terminal,
43 ... Encoding circuit,
44. Multiplexing circuit,
45 ... transmission buffer,
46: Transmission code circuit,
47 ... Output terminal,
48 ... subtraction circuit,
49. Cut detection circuit,
50. Orthogonal transformation circuit,
51 ... Quantization circuit,
52 ... Output terminal,
53. Encoding control circuit,
54 ... Inverse quantization circuit,
55. Inverse orthogonal transform circuit,
56 ... Predictive memory,
57 in-loop filter,
58: Output terminal.

Claims (10)

In an image recording / reproducing apparatus for recording / reproducing moving image data on / from a recording medium,
Cut detection holding means for detecting a cut in which an image greatly changes between successive screens from the moving image data, and holding image data corresponding to the detected cut;
Recording means for recording each image data corresponding to a plurality of cuts held in the cut detection holding means on the recording medium;
An image recording / reproducing apparatus comprising: display means for reading each image data corresponding to a plurality of cuts recorded by the recording means from the recording medium and displaying the image data on a multi-screen as a menu for selection. A selection means for selecting a desired cut by an external operation from a plurality of cuts displayed on a multi-screen by the display means;
2. The image recording / reproducing apparatus according to claim 1, further comprising reproducing means for reproducing moving image data corresponding to the cut selected by the selecting means from the recording start position. A selection means for selecting a desired cut by an external operation from a plurality of cuts displayed on a multi-screen by the display means;
2. The image recording / reproducing apparatus according to claim 1, further comprising reproducing means for reproducing moving image data corresponding to the cut selected by the selecting means from the position of the selected cut. 2. The image recording / reproducing apparatus according to claim 1, wherein the recording means records each image data corresponding to a plurality of cuts held by the cut detection holding means as a file on the recording medium. In an image recording / reproducing apparatus for recording / reproducing moving image data on / from a recording medium,
Recording start position holding means for holding data indicating a recording start position of the moving image data on the recording medium;
Cut detection holding means for detecting a cut in which an image greatly changes between successive screens from the moving image data, and holding image data corresponding to the detected cut;
Recording means for recording the cut image data held in the cut detection holding means and the recording start position data held in the recording start position holding means in association with each other, and recording the recording medium;
Display means for displaying a plurality of cuts detected by the cut detection holding means based on cut image data read from the recording medium as a menu for selection on a multi-screen;
A selection means for selecting a desired cut by an external operation from a plurality of cuts displayed on a multi-screen by the display means;
Search means for searching for a recording start position on the recording medium of moving image data corresponding to the cut selected by the selection means based on the recording start position data read from the recording medium, An image recording / reproducing apparatus. In an image recording / reproducing method for recording / reproducing moving image data on / from a recording medium,
Detecting a cut in which an image greatly changes between successive screens from the moving image data, and retaining image data corresponding to the detected cut;
Recording each image data corresponding to a plurality of held cuts on the recording medium;
And a step of reading each image data corresponding to the plurality of cuts from the recording medium and displaying it on a multi-screen as a menu for selection. A step of selecting a desired cut by an external operation from a plurality of cuts displayed on a multi-screen,
7. The image recording / reproducing method according to claim 6, further comprising a step of reproducing moving image data corresponding to the selected cut from the recording start position. A step of selecting a desired cut by an external operation from a plurality of cuts displayed on a multi-screen,
7. The image recording / reproducing method according to claim 6, further comprising a step of reproducing moving image data corresponding to the selected cut from the position of the selected cut. The step of recording each image data corresponding to the plurality of cuts on the recording medium forms a file of each image data corresponding to the plurality of held cuts and records the file on the recording medium. 6. The image recording / reproducing method according to 6. In an image recording / reproducing method for recording / reproducing moving image data on / from a recording medium,
Holding data indicating a recording start position of the moving image data on the recording medium;
Detecting a cut in which an image greatly changes between successive screens from the moving image data, and retaining image data corresponding to the detected cut;
Associating the retained cut image data with the retained recording start position data, and recording the recording medium;
Based on the cut image data read from the recording medium, displaying a plurality of cuts as a menu for selection on a multi-screen,
A step of selecting a desired cut by an external operation from a plurality of cuts displayed on a multi-screen,
And a step of searching for a recording start position of the moving image data corresponding to the selected cut on the recording medium based on the recording start position data read from the recording medium. .

Images