Information processing method and apparatus, program and recording medium

• US 20020145702A1
• Filed: 12/21/2001
• Published: 10/10/2002
• Est. Priority Date: 04/21/2000
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Kato, Motoki, Hamada, Toshiya
• Granted Patent: US 7,941,033 B2
• Time in Patent Office: Days
• US Class Current: 352/1
• CPC Class Codes: G11B 20/10 Digital recording or reproducing
• CPC Class Codes: G11B 20/1217 on discs
• CPC Class Codes: G11B 2020/10537 Audio or video recording
• CPC Class Codes: G11B 2020/10944 Real-time recording or reproducing, e.g. for ensuring seamless playback of AV data
• CPC Class Codes: G11B 2220/2541 Blu-ray discs; Blue laser DVR discs
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/329 on a disc [VTOC]
• CPC Class Codes: H04N 9/7921 for more than one processing mode
• CPC Class Codes: H04N 9/8042 involving data reduction

Abstract

In case continuous reproduction is commanded from a first AV stream to a second AV stream, a third AV stream, made up of a preset portion of the first AV stream and a preset portion of the second AV stream, is generated. The third AV stream is reproduced when reproduction is switched from the first AV stream to the second AV stream. As information pertinent to the third AV stream, the address information of a source packet of the first AV stream at a time of switching from the first AV stream to the third AV stream and the address information of a source packet of the second AV stream at a time of switching from the third AV stream to the second AV stream, are generated. This enables reproduction such as to maintain continuity between separately recorded AV streams.

Claims

1. An information processing apparatus, comprising:

a generator operable to generate, when continuous reproduction from a first AV stream to a second AV stream is commanded, a third AV stream and address information as information pertinent to said third AV stream, said third AV stream including a preset portion of said first AV stream and a preset portion of said second AV stream and being reproduced when reproduction is switched from said first AV stream to said second AV stream, said address information including information on an address of a source packet of said first AV stream at a time of switching of reproduction from said first AV stream to said third AV stream, and information on an address of a source packet of said second AV stream at a time of switching of reproduction from said third AV stream to said second AV stream; and

a recorder operable to record said third AV stream and said address information generated by said generator.

2. The information processing apparatus according to claim 1, wherein an arrival time stamp of said source packet of said first AV stream is continuous with an arrival time stamp of a source packet located at a leading end of said third AV stream, and an arrival time stamp of said source packet of said second AV stream is continuous with an arrival time stamp of a source packet located at a trailing end of said third AV stream.

3. The information processing apparatus according to claim 2, wherein a sole discontinuous point exists in said arrival time stamp of said source packet in said third AV stream.

4. The information processing apparatus according to claim 2, wherein said address is determined so that a data portion of an AV stream previous to a source packet specified by said information on said address of said source packet of said first AV stream is located in a continuous area of not less than a preset size on a recording medium.

5. The information processing apparatus according to claim 2, wherein said address is determined so that a data portion of an AV stream subsequent to a source packet specified by said information on said address of said source packet of said second AV stream is located in a continuous area of not less than a preset size on a recording medium.

6. The information processing apparatus according to claim 2, wherein said third AV stream is generated so that said third AV stream is located in a continuous area of not less than a preset size on said recording medium.

7. An information generating method, comprising:

generating, when continuous reproduction from a first AV stream to a second AV stream is commanded, a third AV stream including a preset portion of said first AV stream and a preset portion of said second AV stream, said third AV stream being reproduced when reproduction is switched from said first AV stream to said second AV stream, and

generating address information as information pertinent to said third AV stream, said address information including information on an address of a source packet of said first AV stream at a time of switching of reproduction from said first AV stream to said third AV stream, and information on an address of a source packet of said second AV stream at a time of switching of reproduction from said third AV stream to said second AV stream.

8. A recording medium having recorded thereon a computer-readable program for generating information, said program comprising:

generating, when continuous reproduction from a first AV stream to a second AV stream is commanded, a third AV stream including a preset portion of said first AV stream and a preset portion of said second AV stream, said third AV stream being reproduced when reproduction is switched from said first AV stream to said second AV stream, and

generating address information as information pertinent to said third AV stream, said address information including information on an address of a source packet of said first AV stream at a time of switching of reproduction from said first AV stream to said third AV stream, and information on an address of a source packet of said second AV stream at a time of switching of reproduction from said third AV stream to said second AV stream.

9. A program for having a computer execute a program for generating information, said program comprising:

generating, when continuous reproduction from a first AV stream to a second AV stream is commanded, a third AV stream including a preset portion of said first AV stream and a preset portion of said second AV stream, said third AV stream being reproduced when reproduction is switched from said first AV stream to said second AV stream, and

generating address information as information pertinent to said third AV stream, said address information including information on an address of a source packet of said first AV stream at a time of switching of reproduction from said first AV stream to said third AV stream, and information on an address of a source packet of said second AV stream at a time of switching of reproduction from said third AV stream to said second AV stream.

10. An information processing apparatus, comprising:

a reproducing unit operable to reproduce a recording medium having recorded thereon a first AV stream, a second AV stream, a third AV stream including a preset portion of said first AV stream and a preset portion of said second AV stream, and address information as information pertinent to said third AV stream, said third AV stream being reproduced when reproduction is switched from said first AV stream to said second AV stream, said address information including information on an address of a source packet of said first AV stream at a time of switching of reproduction from said first AV stream to said third AV stream, and information on an address of a source packet of said second AV stream at a time of switching of reproduction from said third AV stream to said second AV stream; and

a controller operable to control said reproducing unit for switching reproduction from said first AV stream read out from said first AV stream to said third AV stream and from said third AV stream to said second AV stream, based on said information pertinent to said third AV stream, read out from said second unit.

11. An information processing method, comprising:

reproducing a recording medium having recorded thereon a first AV stream, a second AV stream, a third AV stream including a preset portion of said first AV stream and a preset portion of said second AV stream, and address information as information pertinent to said third AV stream, said third AV stream being reproduced when reproduction is switched from said first AV stream to said second AV stream, said address information including information on an address of a source packet of said first AV stream at a time of switching of reproduction from said first AV stream to said third AV stream, and information on an address of a source packet of said second AV stream at a time of switching of reproduction from said third AV stream to said second AV stream; and

controlling said reproducing step for switching reproduction from said first AV stream readout-controlled from said first readout controlling step to said third AV stream and from said third AV stream to said second AV stream, based on said information pertinent to said third AV stream, readout-controlled in said second readout controlling step.

12. A recording medium having recorded thereon a computer-readable program for processing information, said program comprising:

reproducing a recording medium having recorded thereon a first AV stream, a second AV stream, a third AV stream including a preset portion of said first AV stream and a preset portion of said second AV stream, and address information as information pertinent to said third AV stream, said third AV stream being reproduced when reproduction is switched from said first AV stream to said second AV stream, said address information including information on an address of a source packet of said first AV stream at a time of switching of reproduction from said first AV stream to said third AV stream, and information on an address of a source packet of said second AV stream at a time of switching of reproduction from said third AV stream to said second AV stream; and

controlling said reproducing step for switching reproduction from said first AV stream readout-controlled from said first readout controlling step to said third AV stream and from said third AV stream to said second AV stream, based on said information pertinent to said third AV stream, readout-controlled in said second readout controlling step.

13. A program for a having a computer execute a program for processing information, said program comprising:

reproducing a recording medium having recorded thereon a first AV stream, a second AV stream, a third AV stream including a preset portion of said first AV stream and a preset portion of said second AV stream, and address information as information pertinent to said third AV stream, said third AV stream being reproduced when reproduction is switched from said first AV stream to said second AV stream, said address information including information on an address of a source packet of said first AV stream at a time of switching of reproduction from said first AV stream to said third AV stream, and information on an address of a source packet of said second AV stream at a time of switching of reproduction from said third AV stream to said second AV stream; and

controlling said reproducing step for switching reproduction from said first AV stream readout-controlled from said first readout controlling step to said third AV stream and from said third AV stream to said second AV stream, based on said information pertinent to said third AV stream, readout-controlled in said second readout controlling step.

14. A recording medium having recorded thereon address information, comprising:

when continuous reproduction from a first AV stream to a second AV stream is commanded, a third AV stream including a preset portion of said first AV stream and a preset portion of said second AV stream, said third AV stream being reproduced when reproduction is switched from said first AV stream to said second AV stream; and

address information as information pertinent to said third AV stream, said address information including information on an address of a source packet of said first AV stream at a time of switching of reproduction from said first AV stream to said third AV stream, and information on an address of a source packet of said second AV stream at a time of switching of reproduction from said third AV stream to said second AV stream.