File generation apparatus, method, program, and recording medium

• US 20070094290A1
• Filed: 06/09/2004
• Published: 04/26/2007
• Est. Priority Date: 06/11/2003
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Furukawa, Takashi, Katsuo, Satoshi, Oka, Takeshi
• Granted Patent: US 8,204,919 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G11B 20/10 Digital recording or reproducing
• CPC Class Codes: G11B 20/12 Formatting, e.g. arrangement of data block or words on the record carriers within interface between computers and data recorders G06F3/06
• CPC Class Codes: G11B 2020/10592 specifically adapted for recording or reproducing multichannel signals
• CPC Class Codes: G11B 27/031 Electronic editing of digitised analogue information signals, e.g. audio or video signals
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence

Abstract

The present invention aims at improving the usability of recording media and providing efficient read and write processes. A header control portion 53 generates a header arranged at the beginning of a file. A footer control portion 52 generates a footer arranged at the end of the file. A filler control portion 54 generates a filler so that the data amount of a body, the header, or the footer of the file corresponds to an integral multiple of an ECC block on an optical disk by adding the filler to the body, the header, or the footer. A KLV encoder 55 KLV-encodes a filler for the body according to the KLV structure. The present invention can be applied to a disk apparatus that records video data or audio data on optical disks.

Claims

1. A file generation apparatus for generating a file of first data to be recorded on a recording medium, the file generation apparatus comprising:

first generation means for generating second data to be arranged at the beginning of the file;

second generation means for generating third data to be arranged at the end of the file; and

third generation means for generating fourth data which allows the data amount of the first, second, or third data to be an integral multiple of a unit of reading or writing to the recording medium by adding the fourth data to the first data, the second data, or the third data.

2. The file generation apparatus according to claim 1,

wherein the first generation means generates the second data, i.e., a header of the file.

3. The file generation apparatus according to claim 1,

wherein the first generation means further comprises format conversion means for converting the first data into a KLV (Key, Length, Value) structure;

and

wherein the first generation means generates the second data composed of the file'"'"'s header, and a key and a length arranged between the header and the first data.

4. The file generation apparatus according to claim 1,

wherein the third generation means generates the fourth data by making an addition to each of N−

1 portions of the first data toward the beginning out of the first data divided into N portions, where N is an integer, so that the data amount of each of the first data divided into N−

1 portions becomes an integral multiple of a physical unit area of the recording medium and the overall data amount of the first data becomes an integral multiple of the unit of reading and writing on the recording medium.

5. The file generation apparatus according to claim 1,

wherein the third generation means generates the fourth data for the first data divided into units corresponding to specified reproduction times with video data and audio data for a plurality of channels multiplexed in accordance with the divided units so that the data amount for each of divided units of the first data corresponds to an integral multiple of the unit of reading and writing on the recording medium.

6. The file generation apparatus according to claim 5,

wherein the third generation means generates the fourth data so that the data amount totaling partition data for separating divided portions of the first data from each other, metadata contained in each of divided portions of the first data, and the video data corresponds to an integral multiple of the unit of reading and writing on the recording medium.

7. The file generation apparatus according to claim 5,

wherein the third generation means generates the fourth data so that the data amount of each of divided portions of the audio data contained in each of divided portions of the first data corresponds to an integral fraction of the unit of reading and writing on the recording medium and the overall data amount of the audio data corresponds to an integral multiple of the unit of reading and writing on the recording medium.

8. A method of generating a file of first data recorded on a recording medium, comprising:

a first generation step of generating second data to be arranged at the beginning of the file;

a second generation step of generating third data to be arranged at the end of the file; and

a third generation step of generating fourth data which allows the data amount of the first, second, or third data to be an integral multiple of a unit of reading or writing to the recording medium by adding the fourth data to the first data, the second data, or the third data.

9. A program which allows a computer to perform a file generation process of generating a file of first data, the program comprising:

a first generation step of generating second data to be arranged at the beginning of the file;

a second generation step of generating third data to be arranged at the end of the file; and

a third generation step of generating fourth data which allows the data amount of the first, second, or third data to be an integral multiple of a unit of reading or writing to the recording medium by adding the fourth data to the first data, the second data, or the third data.

10. A recording medium to record a file of first data,

wherein first additional data is added to record the first data whose data amount corresponds to an integral multiple of a unit of reading or writing to the recording medium so that a boundary of the first data matches a boundary of the unit;

wherein second data is arranged at the beginning of the file and is attached with second additional data to have the data amount corresponding to an integral multiple of the unit so that a boundary of the second data matches a boundary of the unit; and

wherein third data is arranged at the end of the file and is attached with third additional data to have the data amount corresponding to an integral multiple of the unit so that a boundary of the third data matches a boundary of the unit.