JPH0628780A - Disk and device for reproducing disk - Google Patents

Abstract

PURPOSE:To synchronize completely the outputs of a sound and an image by recording an image flag in a sound area on a disk. CONSTITUTION:An image output flag for outputting the image synchronizing with the sound is recorded on sub data in a sound data area on the disk 1. When a reproducing track number is inputted from an input means 36, by a data read means 31, image data corresponding to the track number is read and stored in an image data storage means 19. Then, when sound data is reproduced, by an image output flag detection means 34, the image output flag is detected and the image corresponding to the sound is outputted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to video and music such as compact discs and subcode graphics, and CD-RO.
The present invention relates to a data disc and a disc reproducing device in which data such as M is mixed in one disc and recorded together with its management information.

[0002]

2. Description of the Related Art In recent years, with the spread of compact discs and the like, discs on which not only music but also image data and the like are recorded have been used, and demands for more advanced usage are increasing.

FIG. 4 shows a recording structure of a conventional disk. Reference numeral 1 is a disk, 2 is a lead-in area in which management information of a data area 3 is recorded in sub-data, 3 is a control data area 5 and an image. 3 of data area 6 and voice data area 7
A data area 4 composed of three areas is a lead-out area. Control data is recorded in the main data of the control data area 5, image data is recorded in the main data of the image data area 6, and audio data is recorded in the main data of the audio data area 7. Further, in the sub data of the data area 3, addresses of continuous main data are recorded.
The audio data is divided into tracks for each song. The control data is composed of a control program for outputting an image as well as arrangement information of image data and reproduction of sound. The management information recorded in the lead-in area 2 includes the number of tracks, the recording time of the data area, and the start time of each track.

FIG. 5 shows a block diagram of a conventional disc reproducing apparatus. Reference numeral 12 is an optical pickup for extracting a reproduction signal 13 from the disc 1, and 14 is processing the reproduction signal 13 and separating and outputting the main data into image data 18 and audio data 15,
Address 25, management information, control data 26 from sub data
Signal processing means for separating and outputting the audio data, 16 is a voice DA converting means for converting the voice data 15 from digital to analog, 1
Reference numeral 9 denotes an image data storage means for storing the image data 18, 2
Reference numeral 0 is an image DA converting means for converting the image data for one screen stored in the image data storing means 19 from digital to analog, and 22 is an analog signal by the image DA converting means 20 by a control signal from the image output managing means 38. An image output means for outputting the generated image signal to an image output terminal, 37 is a data reading means 31, an address decoding means 32, a storage means 3
3, an initial setting means 35, an image output management means 38, a time information output means 39, a control means composed of 6 blocks,
Reference numeral 31 is a data reading means for reading the data recorded on the disk 1, 32 is an address decoding means for decoding an address from the sub-data of the read data, and 33 is the management information and control data area 5 recorded in the lead-in area. Storage means for storing the control data recorded on the recording medium, reference numeral 35 for initializing means for initializing before the reproducing operation, 38 for image output managing means for measuring the time and managing and controlling the output of the image, and 39 for time information. Time information output means for outputting
Is an input means for inputting the track number to be reproduced.

A conventional disk reproducing operation of the conventional disk reproducing apparatus will be described. FIG. 6 shows a flowchart when a conventional disc is reproduced by a conventional disc reproducing apparatus.

The conventional disc is set in the conventional disc reproducing apparatus and the power is turned on. The optical pickup 12 reproduces the lead-in area 2 and outputs a reproduction signal 13 according to a command from the initial setting means 35. The reproduction signal 13 output from the optical pickup 12 is separated into main data and sub data by the signal processing means 14. The management information recorded in the sub data of the lead-in area 22 is read (step 5
1). The read management information is stored in the storage unit 33. Further, the control data recorded in the control data area 5 is read (step 52). The read control data is stored in the storage unit 33. First from the input means 36
The track number 1 is input to instruct the reproduction of the tune (step 53). The data reading means 31 is an input means 36.
When the reproduction command of the track number 1 is received from the control unit, the control data stored in the storage unit 33 is referred to, and a command is given to the motor driving unit 28 and the optical pickup driving unit 30.
The optical pickup 12 is moved to the address position of the image data area 6 corresponding to the track number 1 to read the image data of the disc 1.

The signal 13 obtained by reading the disk 1 with the optical pickup 12 is processed by the signal processing means 14 into the address 25 recorded in the sub data and the image data 18 recorded in the main data and output. The address decoding means 32 decodes the address 25 output from the signal processing means 14 and sends it to the data reading means 31. The data reading means 31 confirms that it is the address of the image data corresponding to the first track and reads all the image data (step 54). All image data 1 corresponding to the read first track
8 is stored in the image data storage means 19 (step 5).
5).

The data reading means 31 refers to the start address of the first track of the management information stored in the storage means 33, and refers to the motor driving means 28 and the optical pickup driving means 3.
A command is given to 0, the optical pickup 12 is moved to the start address of the first track, and the signal of the first track of the disk 1 is read. The signal 13 obtained by reading the disc 1 with the optical pickup 12 is processed by the signal processing means 14 into the address 25 recorded in the sub data and the image data 18 recorded in the main data and output. The address decoding means 32 decodes the address 25 output from the signal processing means 14 and sends it to the data reading means 31. The data reading means 31 is the first
After confirming that the address is the address of the audio data of the track, the audio data is read (step 56). The audio data 15 recorded in the main data is converted from digital to analog by the audio DA converter 16 and output from the audio output terminal 17 as an analog audio signal.

The image output management means 38 calculates the output time of the image from the control data stored in the storage means 33 and the time information from the time information output means 39 (step 5).
7). When the reproduction of the first track is started, the image output management means 38 starts the image data storage means 19 and the image output means 2.
2 is commanded to sequentially output the image data stored in the image data storage means 19 according to the image output time. The image data stored in the image data storage means 19 is sent to the image DA conversion means 20, converted from digital to analog, and passed through the image output means 22 to the image output terminal 23.
Outputs an analog image signal corresponding to the voice (step 58).

[0010]

In such a conventional configuration, there is a problem in that an image corresponding to a voice cannot be completely synchronized because it is managed in time.

The present invention has been made in view of the above points, and an object of the present invention is to provide a disc and a disc reproducing apparatus capable of perfectly synchronizing audio and image outputs.

[0012]

In order to solve the above-mentioned problems, the disk of the present invention comprises a lead-in area, a data area, and a lead-out area in order from the inner circumference of the disk. The data is recorded in a division multiplex format, and includes a lead-in area in which the management information of the data area is recorded in the sub data, and a data area in which the control data, the image data, and the audio data are recorded in the main data. Then, the address of the main data in the data area and the image output flag corresponding to the audio data are recorded.

Further, in the disc reproducing apparatus of the present invention, the image storing means for storing the image data, the image output flag detecting means for detecting the image output flag at the time of reproducing the audio data, and the image output flag detecting means detect the image output flag. An image output unit that outputs the image data stored in the image storage unit in synchronization with the image output flag is provided.

[0014]

The present invention provides a disc and a disc reproducing apparatus having the above-mentioned structure, which records the image output flag corresponding to the audio data and detects the image output flag at the time of reproducing the audio data and at the same time outputs the image. Is.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the recording structure of a disk in the first embodiment of the present invention, in which 1 is a disk, 2 is a lead-in area in which management information of a data area 3 is recorded in sub-data, Reference numeral 3 is a data area composed of three areas of a control data area 5, an image data area 6 and an audio data area 7, and 4 is a lead-out area. Control data is recorded in the main data of the control data area 5, image data is recorded in the main data of the image data area 6, and audio data is recorded in the main data of the audio data area 7. Further, in the sub data of the data area 3, addresses of continuous main data are recorded. Further, in the sub data of the audio data area 7, an image output flag for outputting an image in synchronization with the audio is recorded. The audio data is divided into tracks for each song. The control data is composed of arrangement information of image data. The management information recorded in the lead-in area 2 includes the number of tracks, the recording time of the data area, and the start time of each track.

FIG. 2 shows a block diagram of a disk reproducing apparatus in the first embodiment of the present invention. Reference numeral 12 is an optical pickup for extracting a reproduction signal 13 from the disc 1, 14 is a reproduction signal 13 and separates and outputs main data from image data 18 and audio data 15, and sub-data from an address 25, management information and control data 26. Output signal processing means,
Reference numeral 16 is an audio DA conversion means for converting the audio data 15 from digital to analog, 19 is an image data storage means for storing the image data 18 and outputting the image data stored by the control signal of the image output flag detection means 34, and 20 is an image. An image DA converting unit for converting the image data for one screen stored in the data storing unit 19 from digital to analog, 22
Is an image output means for outputting to the image output terminal 23 the image signal converted into analog by the image DA conversion means 20 by the control signal from the image output flag detection means 34, 37 is a data reading means 31, an address decoding means 32, a storage means. 33,
A control means composed of five blocks of an initial setting means 35 and an image output flag detecting means 34, 31 is a data reading means for reading the data recorded on the disk 1, and 32 is an address for decoding the sub-data of the read data. Address decoding means, 33 is a storage means for storing the management information recorded in the lead-in area and the control data recorded in the control data area 5, 35 is an initial setting means for initializing before the reproducing operation, 34 Is an image output flag detecting means for detecting the image output flag and controlling the output of the image, and 36 is an input means for inputting the track number to be reproduced.

The reproducing operation of the disc of the present invention by the disc reproducing apparatus in the first embodiment of the present invention will be described.

FIG. 3 shows a flow chart when the disc according to the first embodiment of the present invention is reproduced by the disc reproducing apparatus of the present invention.

The disc of the present invention is set in the disc reproducing apparatus of the present invention, and the power is turned on. The optical pickup 12 reproduces the lead-in area 2 and outputs a reproduction signal 13 according to a command from the initial setting means 35. Optical pickup 12
The reproduced signal 13 output from the above is separated into main data and sub data by the signal processing means 14. The management information recorded in the sub data of the lead-in area 22 is read (step 4
1). The read management information is stored in the storage unit 33. Further, the control data recorded in the control data area 5 is read (step 42). The read control data is stored in the storage unit 33. First from the input means 36
The track number 1 is input to instruct the reproduction of the tune (step 43). The data reading means 31 is an input means 36.
When the reproduction command of the track number 1 is received from the control unit, the control data stored in the storage unit 33 is referred to, and a command is given to the motor driving unit 28 and the optical pickup driving unit 30.
The optical pickup 12 is moved to the address position of the image data area 6 corresponding to the track number 1 to read the image data of the disc 1.

The signal 13 obtained by reading the disk 1 with the optical pickup 12 is processed by the signal processing means 14 into the address 25 recorded in the sub data and the image data 18 recorded in the main data and output. The address decoding means 32 decodes the address 25 output from the signal processing means 14 and sends it to the data reading means 31. The data reading means 31 confirms that it is the address of the image data corresponding to the first track and reads the image data corresponding to the first track (step 44). All the image data 18 corresponding to the read first track are stored in the image data storage means 19 (step 45). The data reading means 31 is a storage means 33.
Referring to the start address of the first track of the management information stored in, the motor drive means 28 and the optical pickup drive means 30 are instructed to move the optical pickup 12 to the start address of the first track, and Read the signal of one track. Optical pickup 12 for disk 1
The signal 13 read in step 1 is processed by the signal processing means 14 into the address 25 recorded in the sub data and the image data 18 recorded in the main data, and output. The address decoding means 32 decodes the address 25 output from the signal processing means 14 and sends it to the data reading means 31. Data reading means 31
Confirms that it is the address of the audio data of the first track and reads the audio data (step 46). The voice data 15 recorded in the main data is the voice DA conversion means 1
At 6, the signal is converted from digital to analog and output from the audio output terminal 17 as an analog audio signal.

When the reproduction of the first track is started, the image output flag detecting means 34 detects an image output flag from the sub data 26 output from the signal processing means 14 (step 47), and the image data storing means 19, Image output means 22
To sequentially output the image data stored in the image data storage means 19. Image data storage means 1
The image data stored in 9 is image DA converting means 20.
Then, the signal is converted from digital to analog and is passed through the image output means 22 and output from the image output terminal 23 as an analog image signal corresponding to sound (step 48). A code corresponding to each image is added to the image output flag, and the image output flag detecting means 34 detects the image output flag, recognizes the code of the flag, and outputs the image corresponding to the code from the image data storage means 19. Output.

[0022]

As described above, according to the present invention, the image output flag corresponding to the audio data is recorded in the sub data, and the image is output when the image output flag is detected during the reproduction of the audio data. And the image can be perfectly synchronized. Furthermore, since a code is added to the image output flag even when fast-forwarding during audio playback,
The image to be output next is output with good timing. Also,
Since it is not necessary to add a control program for outputting an image to the control data, the control data can be simplified and the disc can be easily manufactured.

[Brief description of drawings]

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

FIG. 2 is a block diagram showing the configuration of a disc reproducing apparatus in the embodiment.

FIG. 3 is a flowchart for explaining the operation of the disc reproducing apparatus in the embodiment.

FIG. 4 is a schematic diagram showing a configuration of a disc in a conventional example.

FIG. 5 is a block diagram showing a configuration of a disk reproducing device in the conventional example.

FIG. 6 is a flowchart for explaining the operation of the disc reproducing apparatus in the conventional example.

[Explanation of symbols]

 1 disk 12 optical pickup 14 signal processing means 16 audio DA conversion means 19 image data storage means 20 image DA conversion means 22 image output means 28 motor drive means 29 motor 30 optical pickup drive means 31 data reading means 32 address decoding means 33 storage means 34 image output flag detecting means 35 initial setting means 36 input means 37 control means

Claims (2)

[Claims] 1. A lead-in area, a data area, and a lead-out area are formed in order from the inner circumference of the disc, main data and sub-data are recorded by time division multiplexing, and management information of the data area is recorded in the sub-data. The lead-in area and the data area in which the control data, the image data, and the audio data are recorded in the main data, and the sub-data in the data area corresponds to the address of the main data in the data area and the audio data. A disc on which an image output flag is recorded. 2. An image storage means for storing image data, an image output flag detecting means for detecting an image output flag during reproduction of audio data, and an image output flag detected by the image output flag detecting means, A disc reproducing apparatus comprising: an image output unit that outputs the image data stored in the image storage unit.