Recording format, recording device and reproducing device

• US 20030174549A1
• Filed: 03/18/2003
• Published: 09/18/2003
• Est. Priority Date: 03/31/2000
• Status: Abandoned Application

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Tanaka, Ryuichiro, Yaguchi, Yoshitaka, Kuno, Yoshiki, Yamauchi, Kenichiro, Koudo, Toshikazu
• Application Number:
  US10/240,558
• Publication Number:
  US 20030174549A1
• Time in Patent Office: Days
• US Class Current: 365/200
• CPC Class Codes: G06F 3/061 Improving I/O performance
• CPC Class Codes: G06F 3/0659 Command handling arrangements, e.g. command buffers, queues, command scheduling
• CPC Class Codes: G06F 3/0676 Magnetic disk device
• CPC Class Codes: G11B 20/10 Digital recording or reproducing
• CPC Class Codes: G11B 2020/10537 Audio or video recording
• CPC Class Codes: G11B 2220/20 Disc-shaped record carriers
• CPC Class Codes: H04N 5/775 between a recording apparatus and a television receiver
• CPC Class Codes: H04N 5/781 on disks or drums
• CPC Class Codes: H04N 5/85 on discs or drums
• CPC Class Codes: H04N 9/8042 involving data reduction

Abstract

In a conventional hard disk apparatus, as the amount of data becomes large, just as in the case of AV data, the number of times a data reading or writing command is issued increases, and the overhead of an interface increases, whereby the usability of the CPU of a microcomputer increases.

A hard disk apparatus in accordance with the present invention comprises a hard disk 5 of recording data, a hard disk controller 4 of controlling the hard disk 5, an IDE controller 103 of controlling the hard disk controller 4, and a command controller 102 of creating a command to be issued by the IDE controller 103 from a predetermined command used to reproduce or record data and transferring the command to the IDE controller 103.

Claims

1. (Amended) A recording format that is used when AV data is recorded on a disk, wherein

a disk access unit, the minimum unit for continuously gaining access to the disk, has a fixed length and is divided into a header portion and an AV data portion;

at least one of the chain information, special reproduction information and PSI information of said disk access unit is described in said header portion; and

said special reproduction information includes at least one of information on the head position, kind and length of a frame, information on a frame occurrence pattern, information on the integration value of the number of frames occurring from the start of recording and information on the number of frames included in said disk access unit.

4. (Amended) A recording format in accordance with claim 1, wherein the chain information of said disk access unit is information designating the positions of the preceding and subsequent disk access units of said disk access unit or information designating the positions of one or more subsequent disk access units of said disk access unit.

7. (Amended) A recording format in accordance with claim 1 or 4, wherein the length of said disk access unit can be changed depending on the performance of a hard disk.

2. (Deleted)

3. (Deleted)

5. (Deleted)

6. (Deleted)

8. A reproducing apparatus comprising:

reading means of reading data recorded on a recording medium,

a predetermined interface of relaying data from said reading means in fixed block units,

data selecting means of omitting unnecessary data included in said fixed blocks relayed by said interface at the time when said data to be reproduced is read from said interface thereby to have only said data to be reproduced, and

buffer means of temporarily storing said data to be reproduced that is output from said data selecting means, wherein

said data to be reproduced that is recorded in said buffer means is read by another apparatus.

9. (Deleted)

10. (Deleted)

11. A reproducing apparatus comprising:

reproducing means of reproducing data from a recording medium on which data has been recorded,

a predetermined interface of relaying control information and said data to said reproducing means,

control means of transferring said control information and said data to said interface and monitoring the state of said reproducing means, and

command control means of creating said control information from a predetermined command used to reproduce data and transferring said control information to said control means, wherein

said predetermined command is sent from a microprocessor to which said reproducing apparatus is connected,

when it is assumed that the amount of data transfer by said control means by using one command is M and that the amount of data transfer by said command control means by using one command is N, N and M satisfy N>

M,

said control means notifies the state of said reproducing means to said command control means, and

said command control means notifies the completion of the processing of said predetermined command to said microprocessor.

13. A reproducing apparatus in accordance with claim 11 or 12, wherein said control means directly transfers said data reproduced from said reproducing means and stored in said interface to a predetermined recording medium other than said recording medium.

14. A reproducing apparatus in accordance with claim 13, wherein

said reproducing means, outputting data in fixed block units, comprises:

data selecting means of omitting unnecessary data included in said fixed blocks from said interface thereby to have only said data to be reproduced, and

buffer means of temporarily storing said data to be reproduced that is output from said data selecting means, wherein

said control means directly transfers said data to be reproduced and stored in said buffer means to said other predetermined recording medium.

15. A reproducing apparatus in accordance with any one of claims 11 to 14, wherein said predetermined command is used to give a direction to gain access to a desired position on said recording medium.

16. A reproducing apparatus in accordance with any one of claims 11 to 15, wherein said predetermined command is used to give a direction to transfer data of a desired size.

12. A reproducing apparatus comprising:

reproducing means of reproducing data from a recording medium on which data has been recorded,

a predetermined interface of relaying control information and said data to said reproducing means, and

control means of transferring said control information and said data to said interface and monitoring the state of said reproducing means, wherein

to command control means of creating said control information from a predetermined command sent from a microprocessor, to which said reproducing apparatus is connected, and used to reproduce data and transferring said control information to said control means,

said control means notifies the state of said reproducing means,

said command control means notifies the completion of the processing of said predetermined command to said microprocessor, and

when it is assumed that the amount of data transfer by said control means by using one command is M and that the amount of data transfer by said command control means by using one command is N, N and M satisfy N>

M.

17. (Deleted)

18. A recording apparatus comprising:

recording means of recording data on a recording medium on which data is recorded,

a predetermined interface of relaying control information and said data to said recording means,

control means of transferring said control information and said data to said interface and monitoring the state of said recording means, and

command control means of creating said control information from a predetermined command used to record data and transferring said control information to said control means, wherein

said predetermined command is sent from a microprocessor to which said recording apparatus is connected,

when it is assumed that the amount of data transfer by said control means by using one command is M and that the amount of data transfer by said command control means by using one command is N, N and M satisfy N>

M,

said control means notifies the state of said recording means to said command control means, and

said command control means notifies the completion of the processing of said predetermined command to said microprocessor.

21. (Amended) A recording apparatus in accordance with claim 18 or 19, wherein said predetermined command is used to give a direction to gain access to a desired position on said recording medium.

22. (Amended) A recording apparatus in accordance with any one of claims 18, 19 and 21, wherein said predetermined command is used to give a direction to transfer data of a desired size.

19. A recording apparatus comprising:

recording means of recording data on a recording medium on which data is recorded,

a predetermined interface of relaying control information and said data to said recording means, and

control means of transferring said control information and said data to said interface and monitoring the state of said recording means, wherein

to command control means of creating said control information from a predetermined command sent from a microprocessor, to which said recording apparatus is connected, and used to record data and transferring said control information to said control means,

said control means notifies the state of said recording means,

said command control means notifies the completion of the processing of said predetermined command to said microprocessor, and

when it is assumed that the amount of data transfer by said control means by using one command is M and that the amount of data transfer by said command control means by using one command is N, N and M satisfy N>

M.

20. (Deleted)

23. (Deleted)

24. (Deleted)

25. (Deleted)

26. (Deleted)

27. (Deleted)

28. (Deleted)

29. (Deleted)