Data recording device and method, program storage medium, and program

• US 20040234237A1
• Filed: 12/10/2003
• Published: 11/25/2004
• Est. Priority Date: 04/10/2002
• 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 7,369,745 B2
• Time in Patent Office: Days
• US Class Current: 386/52
• CPC Class Codes: G11B 2220/20 Disc-shaped record carriers
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/329 on a disc [VTOC]

Abstract

This invention relates to a data recording apparatus, a data recording method, a program storage medium, and a program whereby data recorded on an information recording medium is edited and reproduced in a suitably controlled manner. Where an AV stream file including PlayItems is edited, the preceding PlayItem is considered to include an Imaginary Extent 111P as part of a frame data Extent designated by an OUT_point of the item, the Imaginary Extent 111P being reproduced within the preceding PlayItem, and the current PlayItem is considered to have an Imaginary Extent 111C as part of a frame data Extent indicated by an IN_point of the item, the Imaginary Extent 111C being reproduced within the current PlayItem. A control unit of a DV recording/reproducing apparatus compares each of the Imaginary Extents 111P and 111C with a minimum Extent size in order to establish connection_condition information. This invention may be applied advantageously to DV recording/reproducing apparatuses for recording video data to an optical disk.

Claims

1. A data recording apparatus for recording video data to an information recording medium in predetermined recording units, said data recording apparatus comprising:

generating means which, when said video data recorded on said information recording medium is edited, generates connection information about each of a plurality of items arranged in a temporally serial manner to form list information serving as a unit for reproducing the edited video data, each of said items designating a predetermined temporal Extent of said video data; and

recording means for recording said video data, said list information, and said connection information to said information recording medium;

wherein said generating means generates said connection information based on first information obtained by extracting material data that is read in accordance with said items from said video data constituted by a series of data blocks having continuous logical addresses on said information recording medium.

2. A data recording apparatus according to claim 1, further comprising determining means for determining whether each of two sets of said first information which are adjacent to a connection point connecting two of said items has a data amount in excess of a predetermined amount;

wherein said generating means generates said connection information based on a result of the determination by said determining means.

3. A data recording apparatus according to claim 2, wherein said connection information indicates either a guarantee of temporally continuous reproduction of said edited video data, or failure of said guarantee.

4. A data recording apparatus according to claim 3, wherein, if said connection information indicates the failure of said guarantee of temporally continuous reproduction of said edited video data, then said recording means copies said first information about the adjacent but temporally discontinuous two items so as to generate second information and records said second information to a blank area of said information recording medium.

5. A data recording apparatus according to claim 1, wherein said video data have frames each with data encoded therein.

6. A data recording apparatus according to claim 1, wherein said video data have frames each with data in a fixed amount.

7. A data recording method for use with a data recording apparatus for recording video data to an information recording medium in predetermined recording units, said data recording method comprising the steps of:

when said video data recorded on said information recording medium is edited, generating connection information about each of a plurality of items arranged in a temporally serial manner to form list information serving as a unit for reproducing the edited video data, each of said items designating a predetermined temporal Extent of said video data; and

controlling the recording of said video data, said list information, and said connection information to said information recording medium;

wherein said generating step generates said connection information based on information obtained by extracting material data that is read in accordance with said items from said video data constituted by a series of data blocks having continuous logical addresses on said information recording medium.

8. A program storage medium which stores a computer-readable program for use with a computer controlling a data recording apparatus for recording video data to an information recording medium in predetermined recording units, said computer-readable program comprising the steps of:

when said video data recorded on said information recording medium is edited, generating connection information about each of a plurality of items arranged in a temporally serial manner to form list information serving as a unit for reproducing the edited video data, each of said items designating a predetermined temporal Extent of said video data; and

controlling the recording of said video data, said list information, and said connection information to said information recording medium;

wherein said generating step generates said connection information based on information obtained by extracting material data that is read in accordance with said items from said video data constituted by a series of data blocks having continuous logical addresses on said information recording medium.

9. A program for use with a computer controlling a data recording apparatus for recording video data to an information recording medium in predetermined recording units, said program causing said computer to execute the steps of:

when said video data recorded on said information recording medium is edited, generating connection information about each of a plurality of items arranged in a temporally serial manner to form list information serving as a unit for reproducing the edited video data, each of said items designating a predetermined temporal Extent of said video data; and

controlling the recording of said video data, said list information, and said connection information to said information recording medium;

wherein said generating step generates said connection information based on information obtained by extracting material data that is read in accordance with said items from said video data constituted by a series of data blocks having continuous logical addresses on said information recording medium.

10. A data recording apparatus for recording video data to an information recording medium in predetermined recording units, said data recording apparatus comprising:

generating means which, when said video data recorded on said information recording medium is edited, generates connection information about each of a plurality of items arranged in a temporally serial manner to form list information serving as a unit for reproducing the edited video data, each of said items designating a predetermined temporal Extent of said video data; and

recording means for recording said video data, said list information, and said connection information to said information recording medium;

wherein said generating means generates said connection information based on first information obtained by extracting material data that is read in accordance with said items from said video data constituted by a series of data blocks having continuous logical addresses on said information recording medium;

wherein, if said connection information indicates failure of a guarantee of temporally continuous reproduction of said edited video data, then said recording means copies said first information about adjacent but temporally discontinuous two of said items so as to generate second information and records said second information to a blank area of said information recording medium; and

wherein, if said second information is recorded by said recording means, then said generating means changes said connection information into information indicating the guarantee of temporally continuous reproduction of said edited video data.

11. A data recording method for use with a data recording apparatus for recording video data to an information recording medium in predetermined recording units, said data recording method comprising the steps of:

when said video data recorded on said information recording medium is edited, generating connection information about each of a plurality of items arranged in a temporally serial manner to form list information serving as a unit for reproducing the edited video data, each of said items designating a predetermined temporal extent of said video data; and

controlling the recording of said video data, said list information, and said connection information to said information recording medium;

wherein said generating step generates said connection information based on first information obtained by extracting material data that is read in accordance with said items from said video data constituted by a series of data blocks having continuous logical addresses on said information recording medium;

wherein, if said connection information indicates failure of a guarantee of temporally continuous reproduction of said edited video data, then said recording control step copies said first information about adjacent but temporally discontinuous two of said items so as to generate second information and records said second information to a blank area of said information recording medium; and

wherein, if said second information is recorded in said recording control step, then said generating step changes said connection information into information indicating the guarantee of temporally continuous reproduction of said edited video data.

12. A program storage medium which stores a computer-readable program for use with a computer controlling a data recording apparatus for recording video data to an information recording medium in predetermined recording units, said computer-readable program comprising the steps of:

when said video data recorded on said information recording medium is edited, generating connection information about each of a plurality of items arranged in a temporally serial manner to form list information serving as a unit for reproducing the edited video data, each of said items designating a predetermined temporal extent of said video data; and

controlling the recording of said video data, said list information, and said connection information to said information recording medium;

wherein said generating step generates said connection information based on first information obtained by extracting material data that is read in accordance with said items from said video data constituted by a series of data blocks having continuous logical addresses on said information recording medium;

wherein, if said connection information indicates failure of a guarantee of temporally continuous reproduction of said edited video data, then said recording control step copies said first information about adjacent but temporally discontinuous two of said items so as to generate second information and records said second information to a blank area of said information recording medium; and

wherein, if said second information is recorded in said recording control step, then said generating step changes said connection information into information indicating the guarantee of temporally continuous reproduction of said edited video data.

13. A program for use with a computer controlling a data recording apparatus for recording video data to an information recording medium in predetermined recording units, said program causing said computer to execute the steps of:

when said video data recorded on said information recording medium is edited, generating connection information about each of a plurality of items arranged in a temporally serial manner to form list information serving as a unit for reproducing the edited video data, each of said items designating a predetermined temporal extent of said video data; and

controlling the recording of said video data, said list information, and said connection information to said information recording medium;

wherein said generating step generates said connection information based on first information obtained by extracting material data that is read in accordance with said items from said video data constituted by a series of data blocks having continuous logical addresses on said information recording medium;

wherein, if said connection information indicates failure of a guarantee of temporally continuous reproduction of said edited video data, then said recording control step copies said first information about adjacent but temporally discontinuous two of said items so as to generate second information and records said second information to a blank area of said information recording medium; and

wherein, if said second information is recorded in said recording control step, then said generating step changes said connection information into information indicating the guarantee of temporally continuous reproduction of said edited video data.