JP2005063627A5 - - Google Patents

Claims (20)

A data processing apparatus capable of synchronously reproducing the video and the audio from an optical disk in which video data representing the video and audio data representing the audio are recorded in different areas, wherein the area is 1 It consists of the above unit areas,
A reproduction control unit that instructs the reproduction of the video and the audio based on the readout of the video data and the audio data, and the read data;
A head for reading data for each unit area based on an instruction;
An audio buffer memory for storing the read audio data;
A video buffer memory for storing the read video data, and the reproduction control unit instructs the audio buffer memory to read the audio data from a predetermined unit area, and then the head moves. (n + 2) times between when that Yosu: first time corresponding to (n 2 or more integer), and, reproducible the video for a second time required for reading the audio data for the next unit area A data processing device for instructing to read data from the n unit areas to the video buffer memory. The data amount of the video data necessary for reproduction and display over the first time and the second time is equal to or greater than the product of the sum of the first time and the second time and the reading speed of the video data. The data processing apparatus according to claim 1, wherein The data length of the unit area in which the video data is stored is equal to or greater than a value obtained by dividing a product of a third time, which is a total time required for reading the video data, and a read speed of the video data by n. The data processing apparatus according to claim 1, wherein the video and the audio are reproduced in synchronization from an optical disc. During when the head that takes to move is the time required to move between the innermost and outermost of the optical disk, the data processing apparatus according to claim 1. Wherein one of the video data and the audio data, in the recording area of the optical disc, are recorded in the area of the central portion relates radially, while when the head is that takes to move, the innermost circumference of the optical disc The data processing apparatus according to claim 1, wherein the time is approximately half of the time required for movement between the outermost periphery and the outermost periphery. The minimum length of the unit area in which the video data is stored is a time required for reading the video data until the accumulation of the video data that can be reproduced over at least the time required for the head to move, and the video The data processing apparatus according to claim 1, wherein the video and the audio are reproduced synchronously from the optical disc that is equal to or higher than a product of a data reading speed. The data processing apparatus according to claim 1, wherein a data length of each unit area for recording the video data and the audio data is equal to or greater than a predetermined minimum length defined for each of the video data and the audio data. 2. The data processing device according to claim 1, wherein a data amount of the audio data read out at the second time is between 1 and 2 times a minimum length of the unit area in which the audio data is stored. A data processing apparatus capable of recording audio data representing audio on an optical disc,
The optical disc has a first area composed of a plurality of first unit areas, and video data representing video is recorded in the first area,
An audio buffer memory for storing the audio data;
A recording control unit that secures a second area composed of a plurality of second unit areas and instructs the second area to record the audio data;
A head for writing and reading data for each unit area based on instructions;
The recording control unit includes a fourth time corresponding to (n + 2) times (n: an integer equal to or greater than 2) times of the time required for the head to move, and the n first unit areas. A data processing device that specifies a value equal to or greater than the data amount of the audio data that can be reproduced over a fifth time required for reading the video data as the data length of the second unit area, and secures the second area. A playback control unit for instructing reading of the video data, and instructing playback of the video based on the read video data;
A video buffer memory for storing the read video data;
The reproduction control unit further includes a sixth time corresponding to three times the time required for the head to move, and a volume of audio data corresponding to twice the data length of the second unit area. The video data that can be played back over a seventh time required for reading is instructed to be accumulated while performing reading and playback instructions from the n or less first unit areas to the video buffer memory. 9. A data processing apparatus according to 9. The data processing device according to claim 9, wherein the recording control unit instructs each of the second unit areas to record the audio data continuously. The recording control unit generates reproduction control information that specifies the reproduction timing of each of the video data and audio data, and instructs the recording of the reproduction control information in an area different from the first area and the second area The data processing apparatus according to claim 11. The data processing device according to claim 12, wherein the reproduction control unit is capable of reproducing the video data and the audio data in synchronization based on the reproduction control information. The data processing apparatus according to claim 9, wherein one of the first area and the second area is provided at a position substantially half of a recording area of the optical disc with respect to a radial direction of the optical disc. The optical disc has a third area composed of a plurality of third unit areas, and at least one of video data and audio data is recorded in the third area, and at least one third unit area is recorded. Are arranged physically adjacent to at least one first unit region,
The recording control unit is configured to store the audio data that can be reproduced over the fourth time, the fifth time, and an eighth time required to read the data in the n third unit areas. The data processing device according to claim 9, wherein a data length of the second unit area is specified based on a data amount, and the second area is secured. A data processing apparatus capable of recording video data representing video and audio data representing audio on an optical disc,
The optical disc has a continuous first area composed of a plurality of first unit areas and a continuous second area composed of a plurality of second unit areas,
Securing the first area and instructing the first area to record the video data;
A recording control unit for securing the second area and instructing recording of the audio data in the second area;
A head for writing and reading data for each unit area based on instructions
The recording control unit secures at least one first unit area and at least one second unit area that are physically adjacent to each other, and the position of the second area in which the audio data is written A data processing apparatus that obtains position information for specifying the position and instructs writing to the optical disc. The video data is stored as one data file,
The data processing apparatus according to claim 16, wherein the recording control unit records the position information in association with the data file. The audio data is stored as one data file,
The data processing apparatus according to claim 16, wherein the recording control unit records the position information in association with the data file. On the optical disc, playlist information that defines the playback timing of the video and the audio is recorded as a playlist file,
The data processing apparatus according to claim 16, wherein the recording control unit stores the position information in the playlist file. The data processing apparatus according to claim 16, wherein the recording control unit generates the position information for each of the second unit areas in which the audio data is written.