JPH09259504A - Optical disk-reproducing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical disk-reproducing apparatus which can simply select required reproduction information from an optical disk. SOLUTION: An optical disk 2 is driven by a CD mechanical drive 3, whereby image information recorded in the optical disk 2 is reproduced in the optical disk-reproducing apparatus. The reproducing apparatus is provided with a memory means 31 for storing image data of a plurality of menu screens read out from the optical disk 2 to respective predetermined areas, and a display data- generating means 32 for generating image data of a multi screen displaying menu screens altogether from the image data of the plurality of menu screens stored in the memory means 31. The reproducing apparatus also has a control means 9 which designates the CD mechanical drive 3 each recording position for the menu screen in the optical disk 2 and lets the drive 3 read out image data of the menu screen to be stored in the memory means 31. Moreover, when image information is selected from the multi screen, the control means designates the recording position of the selected image information in the optical disk 2, so that the image data of the image information is read out. In this constitution, all the image information recorded in the optical disk 2 is presented on one screen.

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk reproducing apparatus for reproducing an optical disk such as a video CD, and more particularly, it is constructed so that information to be reproduced can be easily selected from the optical disk.

2. Description of the Related Art Compact discs (CDs) are used not only for recording music but also for karaoke C where music and moving pictures are recorded.
Video CD software, which extends the standard of D and karaoke CD and adds a still image playback and a simple interactive function (interactive function), has been produced and used in various fields. In a video CD, moving image data is compressed by the MPEG1 method in order to reduce the amount of moving image data. This MP
In EG1, an image frame of a moving image includes an I picture that is predictively coded using image data in the frame, a P picture that is predictively coded using image data of a preceding frame, and image data of preceding and following frames. Then, the optical disc reproducing apparatus reads the image data compressed and encoded into the B picture to be predictively encoded and recorded by the optical disc reproducing apparatus, decompresses and decodes the image data, and reproduces the moving image on the display. . As shown in FIG. 5, the disc of the video CD has the disc information for control recorded on the outermost track 1 (21) and the inner track 2 thereof.
A moving image, a still image, or the like is recorded in 99 (22). The control track 1 includes tracks 2 to 9 as shown in FIG.
The video CD information section in which the IDs and addresses of the moving images and still images recorded in 9 and the playback procedure in the playback control (PBC) for realizing the interactive function are recorded, and the menu screen for selecting the playback information. A segment play section for storing still image and moving image data used for is provided in a part thereof. Further, time code information indicating the recording position of the information is recorded in parallel on the track in order to locate the recorded information. This time code information is shown in FIG.
As shown in the part on the left side of, the absolute time is recorded in units of 1/100 second and is used as an address indicating an information position. As shown in FIG. 8, an optical disk reproducing device for reproducing a video CD includes a CD mechanical drive 3 that drives the optical disk 2 to read digital data by a head, and an error correction for the digital data read from the optical disk 2. And a CD-ROM decoder 5 for decoding the digital data output from the CD decoder 4 to discriminate the type of the data and distributing the data according to the type.
Compressed video decoder 6 to which compressed video data distributed by decoder 5 is applied, compressed audio decoder 7 to which compressed audio data is applied, CPU 9 to which control data is applied, and this control data It is driven by a RAM 8 for storing, an instruction device 12 such as a key for inputting instruction data to the CPU 9, a remote controller, a display device 10 for displaying the output of the compressed video decoder 6, and an output of the compressed audio decoder 7. Speaker 11
And In this apparatus, when the optical disc 2 of the video CD is set, the optical disc 2 is first driven to read the disc information recorded on the track 1. This disc information is error-corrected by the CD decoder 4,
-It is sorted by the ROM decoder 5 and stored in the RAM 8. Next, when the user instructs the ID of the track desired to be reproduced by the instruction device 12, the CPU 9 causes the RA
The address of the designated track is read by referring to the disc information stored in M8, and the reproduction position is instructed to the CD mechanical drive 3. The CD mechanical drive 3 has a CPU 9
The optical disc 2 is driven based on the control of
Read the data from the commanded position of. The read data is error-corrected by the CD decoder 4, and the CD-RO
The M decoder 5 distributes the image data to the compressed video decoder 6 and the audio data to the compressed audio decoder 7. The compressed video decoder 6 decompresses / decodes this image data and outputs it to the display 10, and a moving image or a still image is displayed on the display 10. Further, the compressed audio decoder 7 expands / decodes the distributed audio data, outputs the expanded audio data to the speaker 11, and the speaker 11 emits sound. The set optical disc 2 is a PBC
In the case of a function compatible video CD, the reproduction procedure in the PBC is stored in the RAM 8 by reading the information of the track 1 of the video CD. In this case, the CP
The U9 first reproduces the menu screen recorded in the segment play section of the track 1 in response to an instruction from the user's instruction device 12. Now, it is assumed that still images of the six menu screens shown in FIGS. 7A to 7F are recorded in the segment play section. CPU 9
If the user controls the reading of the CD mechanical drive 3 so that the first menu screen of “1, Hokkaido Travel” is displayed on the display 10, and the user performs the “forward” operation,
The reading of the CD mechanical drive 3 is controlled so that the next "2, Tohoku region trip" is displayed. In this way, the menu screen is sequentially changed and displayed on the display 10 in accordance with the user's “forward” or “return” operation. Looking at this menu screen, the user, for example, "2, a trip in the Tohoku region"
When "22, Tohoku region in summer" is selected, the CPU 9
Referring to the disk information stored in the RAM 8, "22,
The address of the track position where the information of "the summer Tohoku region" is recorded is read, and the reproduction position is instructed to the CD mechanical drive 3. In addition, a moving image may be recorded in the segment play portion of the video CD as the menu screen. At this time, the moving images for the menu are sequentially displayed on the display 10, and the user gives a selection instruction when the moving image of the desired portion is displayed. In response to this instruction, the CPU 9 specifies the reproduction position of the selected information and causes the CD mechanical drive 3 to read the information. In this way, the user can reproduce desired information by selection from the menu screen.

However, since the optical disk reproducing apparatus sequentially displays the menu screens recorded on the video CD one by one, it takes time to select desired information. There is. When selecting the most desired information from the information recorded on the video CD, all menu screens are sequentially reproduced to check the most desired information, and then the newly checked information is selected. However, there is a problem that the selection operation is troublesome. Also, in this device, C
If D does not support the PBC function, there is a problem in that selection from the menu screen cannot be performed.
The present invention solves such conventional problems, and an object of the present invention is to provide an optical disc reproducing apparatus capable of easily selecting desired reproduction information from an optical disc.

Therefore, in the present invention, C
In the optical disc reproducing apparatus for driving the optical disc by the D mechanical drive to reproduce the image information recorded on the optical disc, storage means for storing image data of a plurality of menu screens read from the optical disc in predetermined areas, respectively, and Display data generating means for generating multi-screen image data for displaying a list of the menu screens from the image data of the plurality of menu screens stored in the storage means, and each recording position of the menu screen on the optical disc in the CD mechanical drive. Is specified to read the image data of the menu screen to be stored in the storage means, and when the image information is selected from the multi-screen, the recording position of the selected image information on the optical disc is specified, A control means for reading the image data of the image information is provided. Further, when the image of the menu screen recorded on the optical disc is a moving image, the control means controls the CD mechanical drive so as to maintain a pause state at each recording position of the menu screen on the optical disc, and the storage means: The image data of each menu screen read in the paused state is stored. Further, in the optical disc reproducing apparatus for driving the optical disc by the CD mechanical drive to reproduce the image information recorded on the optical disc, the image data of the initial screen of the plurality of image information read from the optical disc is stored in respective predetermined areas. Storage means, display data generation means for generating multi-screen image data for displaying a list of the initial screens from image data of the initial screens of a plurality of image information stored in the storage means;
Specify the recording start position of each image information recorded on the optical disc to the mechanical drive, read the image data of the initial screen to be stored in the storage means in the pause state, and select the image information from the multi-screen. And a control unit for designating the recording position of the selected image information on the optical disc and reading the image data of the image information when the disc is opened. With such a configuration, the image information recorded on the optical disc is comprehensively introduced on one screen, and when desired information is selected from this multi-screen, the information is quickly reproduced.

BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIG. 1, an optical disc reproducing apparatus according to an embodiment of the present invention comprises a CD mechanical drive 3 for driving an optical disc 2 to read digital data by a head, and a digital drive read from the optical disc 2.・
A CD decoder 4 for performing error correction on data,
A CD-ROM decoder 5 that decodes the digital data output from the CD decoder 4 to determine the type of data and distributes the data according to the type, a RAM 31 that stores image data for a menu screen, and a RAM 31 A display data generation unit 32 for generating the image data stored in the display data into display data for multi-screen, a compressed video decoder 6 for decompressing / decoding compressed video data, and a compressed audio for decompressing / decoding compressed audio data. A decoder 7, a RAM 8 for storing control data read from the optical disc 2, a CPU 9 for controlling the CD mechanical drive 3, the CD-ROM decoder 5, and the display data generation unit 32.
A key for inputting instruction data to the CPU 9, an instruction device 12 such as a remote controller, a display device 10 for displaying the output of the compressed video decoder 6, and a compressed audio signal.
A speaker 11 driven by the output of the decoder 7 is provided. In this device, the set optical disc 2 is a PBC.
If the video CD corresponds to the function, this video C
All the information on the menu screen recorded in the track 1 of D is read out and stored in the RAM 31, and the display data generation unit 32
Generates multi-screen image data for displaying each menu screen in a list. If the set optical disc 2 is a video CD that does not support the PBC function, the data on the initial screen of each track on this CD is read out, stored in the RAM 31, and then the display data generation unit 32 causes the display data generation unit 32 to read the data. , Multi-screen image data for information selection for displaying a list of initial screens stored in the RAM 31 is generated. The operation of this device will be described in detail with reference to the flowchart of FIG. Step 1: When the optical disc 2 is set in the CD mechanical drive 3, the CPU 9 commands the reading of the disc information recorded on the track 1 of the disc. The read disk information is stored in the RAM 8. The CPU 9 determines the set optical disc 2 based on this disc information.
Is a PBC-enabled video CD.
When the optical disc 2 is a PBC compatible video CD, the step 2: the CPU 9 searches the disc information for the recording position of the menu screen on the track 1, and the step 3: when the type of the menu screen is a still image, Step 4: The recording position of each still image menu screen is sequentially designated to the CD mechanical drive 3, and the reading of each still image menu screen is instructed. Further, the CPU 9 is a CD-ROM
The decoder 5 is instructed to output the read image data of the still image menu screen to the RAM 31. As a result, the image data of each still image menu screen is stored in RAM
It is stored in each of the 31 determined areas. Step 5: In step 3, when the menu screen type is a moving image, the CPU 9 causes the CD mechanical drive 3
Then, the recording position of each moving image menu image is sequentially designated, and an instruction is issued to maintain the pause state at that position. Step 6: The CPU 9 commands the CD-ROM decoder 5 to output the image data read in the respective pause states to the RAM 31. As a result, the image data of one screen extracted from each moving image menu image is stored in each of the determined areas of the RAM 31. Step 7: The CPU 9 instructs the display data generation unit 32 to make the menu screen multi-display, and the display data generation unit 32
Performs the data processing for reading the image data stored in the RAM 31, reducing the size of the image data, and forming a multi-screen. The image data output from the display data generation unit 32 is decompressed and decoded by the compressed video decoder 6 and then displayed on the display 10.
Will be displayed. By such processing, when the still picture menu screens of FIGS. 7A to 7F are recorded on the track 1 of the video CD, as shown in FIG. The combined multi-screen is displayed. Step 8: When the user selects one information number from the multi-displayed menu screen by the indicating device 12, Step 9: The CPU 9 refers to the disk information stored in the RAM 8 and designates the specified number. The recording position of the information corresponding to is searched and the reproduction position is instructed to the CD mechanical drive 3. The CD mechanical drive 3 drives the optical disc 2 and reads data from a designated position on the track of the optical disc 2. In this way, the information specified by the user from the multi-displayed menu screen is reproduced. On the other hand, when the set optical disc 2 is not a PBC-compatible video CD in step 1, step 10: It is identified whether or not the optical disc 2 is a PBC-incompatible video CD. Optical disk 2
If is not a video CD (for example, an audio CD), this operation ends. Optical disc 2 is PBC
If it is a non-compatible video CD, step 11: the CPU 9 searches the disc information for the recording start position of each moving image information recorded on the track, and
The mechanical drive 3 is instructed to sequentially specify the positions and maintain the pause state at the positions. Step 12: The CPU 9 commands the CD-ROM decoder 5 to output the image data read in the respective pause states to the RAM 31. As a result, the image data of the first screen of each moving image information is stored in each determined area of the RAM 31. Step 13: The CPU 9 instructs the display data generation unit 32 to make the information selection screen multi-display, and the display data generation unit 32.
Performs the data processing for reading the image data stored in the RAM 31, reducing the size of the image data, and forming a multi-screen. The image data output from the display data generation unit 32 is decompressed and decoded by the compressed video decoder 6 and then displayed on the display 10.
Will be displayed. By such processing, as shown in FIG. 4, a multi-screen in which the first screen of each moving image information (here, the case where the title is inserted at the beginning of each moving image information is shown as an example) is put together. Is displayed. Step 14: When the user selects one piece of information from the multi-displayed information selection screen by the indicating device 12, Step 15: The CPU 9 refers to the disk information stored in the RAM 8 to display the specified information. The recording position is searched and the reproduction position is instructed to the CD mechanical drive 3. CD
The mechanical drive 3 drives the optical disc 2 and reads data from a designated position on the track of the optical disc 2.
In this way, the information specified by the user on the multi-displayed information selection screen is reproduced.

As is apparent from the above description, the optical disk reproducing apparatus of the present invention displays a list of all menu screens and enables information selection from there. Therefore, information can be selected very quickly, and
Among all the information recorded on the disc, the first desired information can be efficiently found. In addition, a multi-screen for selecting information can be created from a video CD having no menu image, which facilitates selection of information.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an optical disc reproducing apparatus according to an embodiment of the present invention,

FIG. 2 is a flowchart showing the operation of the optical disc reproducing apparatus according to the embodiment,

FIG. 3 is an example of a menu screen generated by the optical disc reproducing apparatus according to the embodiment,

FIG. 4 is an example of an information selection screen generated by the optical disc reproducing apparatus according to the embodiment,

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

FIG. 6 is an explanatory diagram showing a track structure of a video CD,

FIG. 7 shows an example of a conventional video CD menu screen,

FIG. 8 is a block diagram showing a configuration of a conventional optical disc reproducing apparatus.

[Explanation of symbols]

 1 Optical Disc Playback Device 2 Optical Disc 3 CD Mechanical Drive 4 CD Decoder 5 CD-ROM Decoder 6 Compressed Video Decoder 7 Compressed Audio Decoder 8 RAM 9 CPU 10 Display 11 Speaker 12 Indication Device 21 Track 1 22 Track 2 to 99 31 RAM 32 Display data generator

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] March 25, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

Claims (3)

[Claims] 1. An optical disk reproducing apparatus for driving an optical disk by a CD mechanical drive to reproduce image information recorded on the optical disk, wherein image data of a plurality of menu screens read from the optical disk are stored in respective predetermined areas. Storage means, display data generating means for generating multi-screen image data for displaying a list of these menu screens from image data of a plurality of menu screens stored in the storage means; When the recording position of the menu screen is designated, the image data of the menu screen to be stored in the storage means is read out, and when the image information is selected from the multi-screen, the selected image on the optical disc is selected. Designate the information recording position to read the image data of the image information. An optical disc reproducing apparatus comprising: a control unit. 2. When the image of the menu screen recorded on the optical disc is a moving image, the control means causes the CD
The mechanical drive is controlled to maintain a paused state at each recording position on the menu screen on the optical disc,
The storage means stores image data of each menu screen read in a paused state.
An optical disc playback device according to claim 1. 3. An optical disk reproducing apparatus for driving an optical disk by a CD mechanical drive to reproduce image information recorded on the optical disk, wherein image data of an initial screen of a plurality of pieces of image information read from the optical disk are in predetermined areas. Storage means for storing the image data on the initial screen of a plurality of image information stored in the storage means, display data generating means for generating multi-screen image data for displaying a list of these initial screens; The mechanical drive specifies the recording start position of each image information recorded on the optical disc, and the image data of the initial screen to be stored in the storage means is read in a pause state, and the image information of the image information is read from the multi-screen. When the selection is made, the recording position of the selected image information on the optical disc is designated to display the image data of the image information. An optical disk reproducing apparatus comprising: a control unit for reading the data.