JPH08237597A - Disk player - Google Patents

Abstract

PURPOSE: To provide a video CD player which is capable of selecting a designated picture within a short time when the edition or copy of a desired image scene is performed. CONSTITUTION: A video CD player is provided with a data reading part 2 reading image data from a video CD in which the compressed digital image data composed of each picture of I, P and B is recorded by an MPEG format, a data processing part 3 performing a signal processing for read image data, an MPEG decoder 7 performing an MPEG decoding of the image data for which the signal processing is performed, an image display part 13 displaying the image data for which the MPEG deciding is performed and a control part 5 controlling operations. In this video CD player, the search of the I picture is immediately made possible at the time of the image edition for which the display screen of the image display part 13 is used by displaying which of the I, P and B pictures the display screen which is displayed on the image display part 13 is on the part of the display screen of the image display part 13 or the display screen of the display part provided separately.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a video compact disc (CD) player and a digital video disc (D).
VD) Disc players such as players, especially when performing image editing or image copying on the display screen of the image display unit, based on the specified I picture, P picture, B picture, a desired image scene within a short time. Disc player that enables selection of.

[0002]

2. Description of the Related Art Recently, a CD having a diameter of 12 cm and a CD-R
A video CD has been developed in which the compressed digital image data and the compressed digital audio data for a maximum of 74 minutes are recorded in time division by the OM format, and a video CD player for reproducing the compressed digital data recorded on the video CD is also available. Already developed.

Therefore, the outline of this known video CD will be described with reference to the drawings.

First, FIG. 5 is an explanatory view showing the disc structure of such a video CD.

As shown in FIG. 5, the disk configuration is
Lead-in area (LIN) and track 1 (TR1)
And track 2 (TR2) to track N (TRN)
And a lead-out area (LOUT). Here, the lead-in area (LIN) is various T
Track 1 is an area where OC information is recorded.
(TR1) is an area in which a file management information section (PVD) conforming to ISO9660, a karaoke information section, a video CD information section, a segment play item section, and a CD-I application section are sequentially recorded. Track 2 (TR2) to track N (TRN) are all MPEG1 (Moving Pictu).
The re-Experts Group 1) is an area where compressed digital image data and compressed digital audio data according to the method are recorded, respectively, and a lead-out area (L
OUT) is an area in which information indicating the end of recording various data is recorded.

Next, FIG. 6 is an explanatory view showing the structure of tracks and sectors in such a video CD.
(A) shows a track configuration, and (b) shows a sector configuration.

As shown in FIG. 6A, each track (for example, track number n, where n =
2, 3, ..., N) are provided with a pause margin (150 sectors or more) for searching by track number at the beginning, followed by a front margin (15 sectors or more), and then MPEG. A data section is provided, and a rear margin (15 sectors or more) is provided at the end. An index number 00 is attached to the pause margin, and index numbers 01 to 9 are assigned to the front margin, the MPEG data section, and the rear margin.
9 is attached.

Further, as shown in FIG. 6 (b), each sector is provided with a pack header (PHD) at the head portion, followed by pack data (PDT). Sectors make up one pack (2324 bytes). And pack data (PDT)
Is equipped with a packet (packet)
et) comprises a packet header (PCH) and packet data (PCD). In this case, a start code, a reference clock, a transfer rate, etc. are recorded in the pack header (PHD). In the packet (packet), the start code,
Stream type (image data / audio data distinction), reproduction start time, decode start time, etc. are recorded, and packet data (PCD) contains at least one screen of compressed image data and / or one frame of compressed image data. Audio data and other data are recorded. Note that about 1.2 Mb / sec is assigned to the image data, and 0.2 Mb / sec is assigned to the audio data.

FIG. 7 is an explanatory diagram showing an example of a hierarchical structure of compressed image data in the MPEG format.

As shown in FIG. 7, the compressed image data is composed of a sequence layer, a GOP (Group of Picture) layer and a picture layer. In the sequence layer, many sequences are continuously formed, and each sequence starts with a sequence header (H
D) is provided, a plurality of GOPs are continuously provided after that, and a sequence end code is provided at the end, and these constitute one sequence. The GOP layer is first provided with a GSC (Group Start Code) serving as a GOP header (HD), and then I,
P, B multiple pictures, preferably 15 pictures I ₃ , B ₁ , B ₂ , P ₆ , B ₄ , B ₅ , P ₉ , P
_7, B _8, in which _{P 12, B 10, B 11} , P 15, B 13, B 14 are provided, it constitutes a 1 GOP.
Furthermore, the picture layer firstly includes a picture header (H
PSC (Picture Start Code) which is D) is provided,
After that, coded data is provided, and these form one picture. In this case, I,
In each of the P and B pictures, the I picture is an intra-frame coded image and can be independently decoded by itself, and has the largest data amount compared to the P picture and the B picture. The P picture is an inter-frame predictive coded image, and is the latest past I picture or P picture.
It is predictively coded based on a picture, and has a smaller data amount than an I picture and a larger data amount than a B picture. B picture is MPE
A picture specific to G, which is the latest past I picture or P picture and the next I picture or P picture
It is interframe predictive coded from both pictures, and has the smallest data amount compared to the other two pictures.

Further, FIG. 8 shows three types of I, P, and B.
FIG. 3 is an explanatory diagram showing an original picture order (playback order) of the picture of FIG.

As shown in FIG. 8, for 15 pictures of three types of I, P, and B, the original picture order is B ₁ , B ₂ ,
_{I 3, B 4, B 5} , P 6, B 7, B 8, P 9, B 10, B
Video CD if ₁₁ , P ₁₂ , B ₁₃ , B ₁₄ , P ₁₅
The recording order when recorded on is slightly different from the original picture order, I ₃ , B ₁ , B ₂ , P ₆ , B ₄ , B ₅ , P ₉ , B ₇ , B.
₈ , P ₁₂ , B ₁₀ , B ₁₁ , P ₁₅ , B ₁₃ , B ₁₄ in that order,
The playback order from the video CD is the same as the original order B ₁ , B
₂ , I ₃ , B ₄ , B ₅ , P ₆ , B ₇ , B ₈ , P ₉ ,
B ₁₀ , B ₁₁ , P ₁₂ , B ₁₃ , B ₁₄ , and P ₁₅ . As described above, the reason why the recording order to the video CD and the reproduction order from the video CD are different for the 15 types of I, P, and B pictures is to reduce the capacity of the frame memory of the decoder as much as possible. This is because.

And, 15 kinds of three kinds of I, P and B
Cha I₃, B₁, B₂, P₆, B_Four, B_Five, P₉,
B₇, B₈, P₁₂, B_Ten, B₁₁, P_Fifteen, B₁₃, B₁₄Is M
When PEG-decoded, I₃
A picture is MPEG-decoded by itself, but P₆
Picture is MPEG decoded I₃With pictures
MPEG-decoded, P₉Picture is MPEG deco
P₆MPEG decoded using picture
And P₁₂Picture is MPEG decoded P₉Picchi
MPEG-decoded using_FifteenPicture is MP
EG decoded P ₁₂MPEG deco using picture
Is what is read. Also, B₁Picture, B₂Piku
All of the teas are MPEG-decoded I₃Picchi
And the MPEG-decoded P in the previous GOP._Fifteen
MPEG decoded using a picture, B_FourPicchi
B, B_FiveAll pictures are MPEG decoded
I₃Picture and decoded P₆With pictures
MPEG decoded, and so on₇Picchi
B, B₈Picture, B_TenPicture, B₁₁Picture, B₁₃
Picture, B₁₄Pictures are also MPEG decoded
Of.

As described above, in the known video CD player, a moving picture is composed of three types of pictures, which are I picture, P picture, and B picture. In order to newly edit or copy such moving picture, Displays an image on the image display section of a video CD player, and edits or copies a moving image desired by the user while viewing the displayed image.

[0015]

The known video CD player edits or copies the image scene desired by the user while watching the image displayed on the image display section of the video CD player. When editing or copying such an image scene, the user must first select the I picture and then select the P picture and the P picture because of the unique nature of the compressed digital image data recorded on the video CD. B picture must be selected.

However, in the known video CD player, it is possible to determine whether the image displayed on the image display section is an I picture, a P picture or a B picture for the user who edits or copies. Therefore, when the user edits or copies the desired image scene, the user often selects P picture or B picture at the beginning, and the user cannot edit or copy the desired image scene. There is a problem.

Even in the known video CD player, however, it is possible to edit or copy the image scene desired by the user by first performing the repetitive picture selection operation until the I picture is selected. However, this has a problem that the user must spend a lot of time to search for an image scene desired by the user and must perform extremely inefficient work.

The present invention solves the above-mentioned problems.
An object of the present invention is to provide a disc player capable of selecting a designated picture within a short time when editing or copying a desired image scene.

[0019]

In order to achieve the above object, the present invention provides data for reading compressed digital image data from a disc in which compressed digital image data consisting of I, P and B pictures is recorded in MPEG format. A reading unit, a data processing unit for signal-processing the read compressed digital image data, an MPEG decoder for MPEG decoding the signal-processed compressed digital image data, and an image display unit for displaying the MPEG-decoded image data, In a disc player provided with a control unit for controlling the overall operation, a display screen being displayed on the image display unit is I, P on a display screen of a part of the display screen of the image display unit or a display screen provided separately. , B is displayed, the display screen of the image display unit is displayed. During the image editing it had immediately provided with a first means which enables a search for the I picture.

Further, in order to achieve the above object, the present invention comprises a data reading section for reading the compressed digital image data from a disc in which the compressed digital image data consisting of I, P and B pictures is recorded in an MPEG format.
A data processing unit for signal-processing the read compressed digital image data, an MPEG decoder for MPEG-decoding the signal-processed compressed digital image data, and an image display unit for displaying the MPEG-decoded image data. In a disc player including a control unit for controlling, when a predetermined P picture or B picture is designated at the time of image editing using the display screen of the image display unit, first, a GOP including the designated picture is included.
Within the GOP, the I-picture in the GOP is searched, the rotation speed of the disc is increased, and the P-picture in the GOP is searched and decoded to reach a specified P-picture or a specified B-picture. When the P picture immediately before is reached, a second means is provided for restoring the rotational speed of the disk to the normal rotational speed and performing decoding.

[0021]

According to the disc player according to the first means, the display screen being displayed on the image display unit is I, P, or a part of the display screen of the image display unit or the display screen of the display unit provided separately. Since the picture of B is displayed, the user sees the display image on the image display unit together with the display indicating that the display image is the I picture, so that the user desires it. I-pictures in an image scene can be selected in real time, which allows a user to edit or copy his or her desired image scene in a short time.

Further, according to the disc player of the second means, when a predetermined P picture or B picture is designated at the time of image editing using the display screen of the image display unit, first, the designated predetermined I picture in the GOP including the picture is searched, then the rotation speed of the disk is increased to a speed commensurate with the maximum decoding processable speed of the MPEG video decoder, and the P pictures in the GOP are sequentially processed at high speed. When the search and decoding are performed and the designated P picture is reached, or when the P picture immediately before the designated B picture is reached, the disc rotation speed is returned to the normal rotation speed for decoding. Since I am doing so, I-picture selection in the user's desired image scene followed by P-picture or B-picture Automatically and the selection of, it can be performed at high speed, the user is enabled to be executed in a short time to edit or copy of its desired image scene thereby.

[0023]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of the first embodiment of the disc player according to the present invention, and shows an example in which the disc player is a video CD player.

In FIG. 1, 1 is a CD drive device and 2 is a CD drive device.
Is a data reading unit, 3 is a data processing unit, 4 is a random access memory (RAM), 5 is a control unit, 6 is a servo circuit,
7 is an MPEG video decoder, 8 is a first dynamic random access memory (DRAM), 9 is a first digital-analog converter (D / A), 10 is an MPEG audio decoder, 11 is a second dynamic random access memory (DRAM). , 12 is a second digital-analog converter (D / A), 13 is an image display unit, 14 is a voice emitting unit (speaker), 15 is an operating unit, and 15a is an editing operation key.

The output of the CD drive device 1 is connected to the input of the data reading unit 2, and the output of the data reading unit 2 is connected to the input of the data processing unit 3. The data processing unit 3 is connected to the RAM 4 and outputs the data to the control unit 5.
Connected to. The control unit 5 controls the CD via the servo circuit 6.
It is connected to the drive device 1 and also to the image display unit 13. The video output of the control unit 5 is connected to the input of the MPEG video decoder 7, and the audio output of the control unit 5 is
It is connected to the input of the MPEG audio decoder 10.
The MPEG video decoder 7 is connected to the first DRAM 8 and outputs the first digital-analog converter 9
Connected to the input of. MPEG audio decoder 10
Is connected to the second DRAM 11 and its output is connected to the input of the second digital-analog converter 12.
The output of the first digital-analog converter 9 is connected to the image display unit 13, and the second digital-analog converter 12 is connected.
Has its output connected to the vocalizer 14. The operation unit 15 includes at least an editing operation key 15a inside, and the control unit 5
It is connected to the.

FIG. 2 is an explanatory diagram showing an example of the display of the types of pictures displayed corresponding to the display image on the image display section in the first embodiment shown in FIG.

The operation of the first embodiment having the above construction will be described with reference to FIG.

When the CD drive device 1 is driven by the servo circuit 6 after a video CD (not shown) is loaded, the loaded video CD rotates. The data reading unit 2 reads the compressed digital image data recorded on the rotationally driven video CD, amplifies the read compressed digital image data and shapes the waveform, and supplies it to the next data processing unit 3. The data processing unit 3 performs a first digital process including a demodulation process, an error detection process, a correction process, and the like on the input compressed digital image data, and a RAM.
2 is used to perform demodulation processing of MPEG data in the CD-ROM format, error detection and correction processing, second digital processing including address information (time information) extraction processing, and the like, and supplies it to the control unit 5. The servo circuit 6 includes the control unit 5
When the CD drive device 1 reads compressed digital image data from a video CD based on the control of 1., various servo controls in the CD drive device 1, for example, rotary servo,
Controls focusing servo, tracking servo, feed servo, etc.

Next, when the compressed digital image data that has been digitally processed is supplied from the data processing unit 3, the control unit 5 separates the compressed digital video data and the compressed digital audio data, and the compressed digital video data is M
The compressed digital audio data is supplied to the PEG video decoder 7, and the compressed digital audio data is supplied to the MPEG audio decoder 10. At this time, the MPEG video decoder 7 uses the first DR
The AM8 is used to decode the input compressed digital video data by the MPEG method, and the MPEG decoded digital video signal is supplied to the first (D / A) 9 that follows. The first (D / A) 9 converts the MPEG-decoded digital video signal into an analog video signal,
The converted analog video signal is supplied to the image display unit 13 and is displayed as an image there. On the other hand, the MPEG audio decoder 10 uses the second DRAM 11 to decode the input compressed digital audio data by the MPEG method, and supplies the MPEG decoded digital audio signal to the next second (D / A) 12. . Second
The (D / A) 12 converts the MPEG-decoded digital audio signal into an analog audio signal, supplies the converted analog audio signal to the voice emitting unit 15, and is emitted there.

In this case, based on the compressed digital image data supplied from the data processing unit 3, the control unit 5 displays the display image (frame) on the image display unit 13 as an I picture or a P picture. It is determined whether or not there is a B picture, and a display signal indicating the type of picture of the display image (frame) is matched with the timing of supply of the display image (frame) to the image display unit 13, and the image is displayed. It is supplied to the display unit 13. Here, the display signal indicating the type of picture is a PCT (Pictur) in the picture layer.
e Coding Type) can be discriminated by reading the code: I code when the code is 001, P picture when the code is 010, B picture when the code is 011 and D picture when the code is 100.
Picture, and other codes 000, 101 to 1
11 is a reserve state. As a result, as shown in FIG. 2, when the picture type of the display image (frame) is an I picture, a part of the image display unit 13 (for example, the lower left corner) is an I picture. If the type of the picture of the display image (frame) is a P picture, a message indicating that it is a P picture is displayed on a part of the image display unit 13 (for example, the lower left corner). When the display is performed and the picture type of the display image (frame) is a B picture, a display indicating that the B picture is displayed is displayed on a part of the image display unit 13 (for example, the lower left corner). Be seen.

As described above, according to the first embodiment, for each display image (frame) displayed on the image display unit 13, the type of picture of the display image is also displayed, so that the image display is performed. When performing image editing or image copying on an image scene desired by the user based on the display image (frame) displayed on the unit 13, the user displays the display image (frame) displayed on the image display unit 13.
And the display indicating that the displayed image (frame) is an I picture, and if they match, the editing operation key 15a is operated to display the I picture in the image scene desired by the user in real time. It is possible to make a selection, which allows the user to perform image editing or image copying of his / her desired image scene in a short time.

In the first embodiment, the type of picture of the display image (frame) displayed on the image display unit 13 is displayed on a part of the image display unit 13. However, the display location of the type of picture according to the present invention is not limited to the image display unit 13, but the operation unit 1
It is also possible to provide another display section for displaying the picture type together with the editing operation key 15a in 5 and display the picture type on the display section.

Next, FIG. 3 shows a video C according to the present invention.
It is a block block diagram which shows the structure of the 2nd Example of D player.

In FIG. 3, reference numeral 15b is a display unit, and the same components as those shown in FIG. 1 are designated by the same reference numerals.

The difference in structure between the second embodiment and the first embodiment is that the second embodiment has an operation section 15 provided with editing operation keys 15a and a display section 15b. On the other hand, the first embodiment has the operation unit 15 having only the editing operation keys 15a, and the second embodiment has the connection between the control unit 5 and the image display unit 13. In contrast to this, the first embodiment only has a connection between the control unit 5 and the image display unit 13, and in addition, between the second embodiment and the first embodiment. There is no structural difference. Therefore, further description of the configuration of the second embodiment will be omitted.

FIG. 4 is an explanatory diagram showing the operation when a picture is designated in the second embodiment.
(A) shows an operation executed when a P picture is specified, and (b) shows an operation executed when a B picture is specified.

The operation of the second embodiment will now be described with reference to FIG.
A description will be given by using (a) and (b) together. However, some of the operations of the second embodiment are the same as the operations of the first embodiment already described, but here, including the portion overlapping the operation of the first embodiment, The overall operation of the second embodiment will be described.

When the CD drive device 1 is driven by the servo circuit 6 after a video CD (not shown) is loaded, the loaded video CD rotates. The data reading unit 2 reads the compressed digital image data recorded on the rotationally driven video CD, amplifies the read compressed digital image data and shapes the waveform, and supplies it to the next data processing unit 3. The data processing unit 3 performs a first digital process including a demodulation process, an error detection process, a correction process, and the like on the input compressed digital image data, and a RAM.
2 is used to perform demodulation processing of MPEG data in the CD-ROM format, error detection and correction processing, second digital processing including address information (time information) extraction processing, and the like, and supplies it to the control unit 5. The servo circuit 6 includes the control unit 5
When the CD drive device 1 reads compressed digital image data from a video CD based on the control of 1., various servo controls in the CD drive device 1, for example, rotary servo,
Controls focusing servo, tracking servo, feed servo, etc.

Next, when the compressed digital image data which has been digitally processed is supplied from the data processing unit 3, the control unit 5 separates the compressed digital video data and the compressed digital audio data, and the compressed digital video data is M
The compressed digital audio data is supplied to the PEG video decoder 7, and the compressed digital audio data is supplied to the MPEG audio decoder 10. At this time, the MPEG video decoder 7 uses the first DR
The AM8 is used to decode the input compressed digital video data by the MPEG method, and the MPEG decoded digital video signal is supplied to the first (D / A) 9 that follows. The first (D / A) 9 converts the MPEG-decoded digital video signal into an analog video signal,
The converted analog video signal is supplied to the image display unit 13 and is displayed as an image there. On the other hand, the MPEG audio decoder 10 uses the second DRAM 11 to decode the input compressed digital audio data by the MPEG method, and supplies the MPEG decoded digital audio signal to the next second (D / A) 12. . Second
The (D / A) 12 converts the MPEG-decoded digital audio signal into an analog audio signal, supplies the converted analog audio signal to the voice emitting unit 15, and is emitted there.

In this case, the control unit 5 determines whether the display image (frame) displayed on the image display unit 13 is an I picture or a P picture based on the compressed digital image data supplied from the data processing unit 3. Whether or not it is a B picture is determined, and a display signal indicating the type of picture of the display image (frame) is matched with the timing of supply of the display image (frame) to the image display unit 13. It is supplied to the display unit 15b in the operation unit 15.
As a result, as shown in FIG. 2, when the picture type of the display image (frame) is the I picture,
The display unit 15b displays an I-picture, and when the display image (frame) has a P-picture type, the display unit 15b displays a P-picture. Further, when the type of picture of the display image (frame) is a B picture, the display unit 15a displays that the picture is a B picture.

Further, in the second embodiment, in order to edit or copy an image of a desired image scene, the user operates the editing operation key 15a to display a display image (frame) indicating the desired image scene. ) Is specified.

By designating this display image (frame),
If a predetermined I picture, for example, an I ₃ picture in a GOP is selected, the selected I picture is selected.
_If a GOP including ₃ pictures is searched, the searched I ₃ picture is used, and then the P picture and the B picture related to the I ₃ picture are decoded, a desired image scene is obtained within a short time. Image editing or image copying can be performed.

If a predetermined P picture, for example, a P ₁₂ picture is selected as shown in FIG. 4A by designating the display image (frame),
The immediately preceding I ₃ picture in the GOP including the selected P ₁₂ picture is searched, and thereafter, the rotation speed of the video CD is increased to the maximum speed that can be decoded by the MPEG video decoder 7, only P-pictures of the inner, i.e., sequentially searches each picture of P _6, P _9, P _12, each picture of P _6, P ₉ and high speed decoding, upon decoding of said selected P ₁₂ pictures, Video C
If the rotation speed of D is returned to the normal rotation speed, image editing or image copying for a desired image scene can be performed within a short time.

Further, by designating the display image (frame), a predetermined B picture, for example, FIG. 4B.
As shown in FIG. 3, if the B ₁₀ picture is selected, the immediately preceding I ₃ picture in the GOP including the selected B ₁₀ picture is searched, and then the video CD is searched.
The rotation speed of P is increased to the maximum speed that can be decoded by the MPEG video decoder 7, and only P pictures in the GOP, that is, P ₆ , P ₉ , and P ₁₂ pictures are sequentially searched, and P ₉ , Each P ₁₂ picture is decoded at high speed, and when the P ₉ picture immediately before the selected B ₁₀ picture is decoded, the rotation speed of the video CD is
If the normal rotation speed is restored and the P ₁₂ picture is decoded and the selected B ₁₀ picture is searched, it is possible to perform image editing or image copying for a desired image scene within a short time. .

As described above, according to the second embodiment, no matter what kind of picture is designated, it is possible to edit or copy an image of a desired image scene within a short time. It will be possible.

In the second embodiment, an example in which the picture type of the display image (frame) displayed on the image display section 13 is displayed on the display section 15b has been described. The display is as in the first embodiment,
The configuration may be changed so that the image is displayed on a part of the image display unit 13, or the type of the picture may not be displayed.

In the first and second embodiments, the case where the disc player is a video CD player has been described as an example, but the disc player according to the present invention is not limited to the video CD player. , As well as other similar disc players, such as digital video disc (DVD) players.

[0049]

As described above in detail, according to the disc player of the first or second aspect of the present invention, a part of the display screen of the image display unit 13 or a dedicated display unit 15b provided separately is provided. Since the display screen is configured to display which of I, P, and B pictures is being displayed on the image display unit 13, the user can display the image displayed on the image display unit 13 and the displayed image. By combining with the display that the image is an I-picture, the I-picture in the image scene desired by the user can be selected in real time so that the user can edit or copy the image scene desired by the user. The effect is that it can be executed within a short time.

According to the disc player of the third or fourth aspect of the present invention, when a predetermined P picture or B picture is designated when the image is edited using the display screen of the image display unit 13, First, the I picture in the GOP including the designated predetermined picture is searched, and then the rotation speed of the disc is increased to a speed corresponding to the maximum decoding processable speed of the MPEG video decoder, and the P in the GOP is searched. When the pictures are sequentially searched and decoded at a high speed, and when the specified P picture is reached,
Alternatively, when the P picture immediately before the specified predetermined B picture is reached, the disk rotation speed is restored to the normal rotation speed and decoding is performed, so that the I picture in the image scene desired by the user is reproduced. The selection and subsequent selection of P or B pictures can be done automatically and at high speed, which allows the user to edit or copy his or her desired image scene in a short time. The effect is that you can do it.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of a first embodiment of a disc player according to the present invention.

FIG. 2 is an explanatory diagram showing an example of display of types of pictures displayed corresponding to a display image on an image display unit in the first embodiment shown in FIG.

FIG. 3 is a block diagram showing the configuration of a second embodiment of a disc player according to the present invention.

FIG. 4 is an explanatory diagram showing an operation when a picture is designated in the second embodiment shown in FIG.

FIG. 5 is an explanatory diagram showing a disc configuration of a video CD.

FIG. 6 is an explanatory diagram showing a configuration of tracks and sectors in a video CD.

FIG. 7 is an explanatory diagram showing an example of a hierarchical structure of compressed image data in the MPEG format.

FIG. 8 is an explanatory diagram showing an original picture order (playback order) and a recording order of 15 types of 15 pictures of I, P, and B.

[Explanation of symbols]

1 CD drive device 2 Data reading unit 3 Data processing unit 4 Random access memory (RAM) 5 Control unit 6 Servo circuit 7 MPEG video decoder 8 First dynamic random access memory (DRA)
M) 9 1st digital-analog converter (D / A) 10 MPEG audio decoder 11 2nd dynamic random access memory (DR
AM) 12 Second digital-analog converter (D / A) 13 Image display section 14 Voice emitting section (speaker) 15 Operation section 15a Editing operation key 15b Display section

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication H04N 7/24

Claims (6)

[Claims] 1. A data reading unit for reading the compressed digital image data from a disc in which compressed digital image data consisting of I, P, B pictures is recorded in an MPEG format, and data for performing signal processing on the read compressed digital image data. A disk player comprising a processing unit, an MPEG decoder for MPEG decoding the signal-processed compressed digital image data, an image display unit for displaying the MPEG decoded image data, and a control unit for controlling the overall operation, By displaying on the display screen of a part of the display screen of the image display unit or a display screen of a separate display unit which of I, P and B pictures is being displayed on the image display unit, Immediately search I-pictures when editing images using the display screen of the image display section A disc player that is characterized by 2. The disc player according to claim 1, wherein the separately provided display unit exclusively displays which of I, P and B pictures. 3. A data reading unit for reading the compressed digital image data from a disc in which the compressed digital image data consisting of I, P, B pictures is recorded in an MPEG format, and data for performing signal processing on the read compressed digital image data. A disk player comprising a processing unit, an MPEG decoder for MPEG decoding the signal-processed compressed digital image data, an image display unit for displaying the MPEG decoded image data, and a control unit for controlling the overall operation, When a predetermined P picture or B picture is designated at the time of editing an image using the display screen of the image display unit, first, the I picture in the GOP including the designated picture is searched, and then the rotation speed of the disc is determined. To search and decode P pictures in the GOP. When the specified P picture is reached or the P picture immediately before the specified B picture is reached, the disk rotation speed is restored to the normal rotation speed for decoding. Disc player. 4. The rotating speed of the raised disk is
4. The disc player according to claim 3, wherein the disc player meets the maximum speed that can be decoded by the MPEG decoder. 5. The disc player according to claim 1, wherein the disc player is a video compact disc (CD) player. 6. The disc player according to claim 1, wherein the disc player is a digital video disc (DVD) player.