US 2002/0159760 A1 · Endless video recording apparatus

Abstract

An endless video recording apparatus for recording digital video images in an endless fashion is disclosed. The endless video recording apparatus is configured such that it comprises video data recording means (100) for recording video data coded in accordance with the MPEG system for each particular unit formed from at least one or more GOPs into an endless recording area secured in a recording medium (12) and recording, where video data are recorded fully in the endless recording area, new video data in an overwriting relationship on the video data recorded formerly in the endless recording area, mark setting means (113) for setting marks to the particular units, mark management means (112) for recording the positions of the marks, the sizes of the particular units corresponding to the marks and the positions of AAUs corresponding to the GOPs, which form the particular units, in a coordinated relationship with the marks into a database (116), mark erasure means (114) for erasing a mark corresponding to an old particular unit which overlaps with an area into which a new particular unit should be recorded from the database (116), and playback allowing area setting means (115) for referring to the database (116) to set a playback allowing area, and that, when a mark is erased by the mark erasure means (114), the video data recording means (100) rewrites an AAU corresponding to the erased mark into a padding stream based on the relationship between the marks and the AAUs recorded in the database (116) and records the padding stream. Upon playback of endlessly recorded video images, seamless video playback can be achieved without suffering from a disorder of video images which is caused by playback of destroyed video data.

Claims21

Dependent claims

An endless video recording apparatus, characterized in that it comprises:

video data recording means (100) for recording video data coded in accordance with the MPEG system for each particular unit formed from at least one or more GOPs into an endless recording area secured in a recording medium (12) and recording, where video data are recorded fully in the endless recording area, new video data in an overwriting relationship on the video data recorded formerly in the endless recording area;
mark setting means (113) for setting marks to the particular units;
mark management means (112) for recording the positions of the marks, the sizes of the particular units corresponding to the marks and the positions of AAUs corresponding to the GOPs, which form the particular units, in a coordinated relationship with the marks into a database (116);
mark erasure means (114) for erasing a mark corresponding to an old particular unit which overlaps with an area into which a new particular unit should be recorded from said database (116);
and
playback allowing area setting means (115) for referring to said database (116) to set a playback allowing area;
and that,
when a mark is erased by said mark erasure means (114), said video data recording means (100) rewrites an AAU corresponding to the erased mark into a padding stream based on the relationship between the marks and the AAUs recorded in said database (116) and records the padding stream.

5 more elements

An endless video recording apparatus, characterized in that it comprises:

video decomposition means (215) for decomposing video data coded in accordance with the MPEG system for each particular unit formed from at least one or more GOPs;
video data recording means (200) for embedding the decomposed video data into recording units of a particular size and recording the recording units into an endless recording area secured in a recording medium (12) and for recording, where the recording units are recorded fully in the endless recording area, a new recording unit in an overwriting relationship on one of the recording units recorded formerly in the endless recording area;
and
a database (216) in which a relationship between GOPs recorded in the recording units and AAUs corresponding to the GOPs is recorded;
and that,
when a GOP recorded in an old recording unit is erased by overwriting recording on a recording unit in which new video data are embedded, said video data recording means (200) rewrites an AAU corresponding to the erased GOP into a padding stream based on the relationship between the GOPs and the AAUs recorded in said database (216) and records the padding stream.

3 more elements

An endless video recording apparatus, characterized in that it comprises:

file preparation means (315) for preparing a plurality of files in an endless recording area secured in a recording medium (12);
video data recording means (300) for successively recording video data coded in accordance with the MPEG system in a particular unit formed from at least more than one GOP for each of the files;
and
a database (316) in which a relationship between the GOPs recorded in the files and AAUs corresponding to the GOPs is recorded;
that,
when video data are recorded fully into the recording areas of all of the files, said file preparation means (315) deletes one of the plurality of files and prepares a new file;
and that,
when one of the files is deleted, said video data recording means (300) rewrites an AAU corresponding to a GOP erased upon the deletion of the file into a padding stream based on the relationship between the GOPs and the AAUs recorded in said database and records the padding 15 stream.

5 more elements

Dependencies are inferred from the claim text.

Endless video recording apparatus

Life of this patent

Endless video recording apparatus

Life of this patent

Abstract

Claims21