Video recording medium, video recording apparatus and video retrieving method

• US 6,560,402 B1
• Filed: 03/25/1999
• Issued: 05/06/2003
• Est. Priority Date: 03/27/1998
• Status: Expired due to Fees

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Ueyama, Hirokazu, Misawa, Ikuo
• Primary Examiner(s): Tran, Thai
• Assistant Examiner(s): ONUAKU, CHRISTOPHER O
• Application Number:
  US09/275,890
• Time in Patent Office: 1,503 Days
• Field of Search: 386/45, 386/68, 386/70, 386/81-83, 386/95, 386/105-106, 386/125-126, 360/78.02, 360/78.03, 360/84-85, 360/90-95, 360/134
• US Class Current: 386/241
• CPC Class Codes: G11B 15/087 by sensing recorded signals
• CPC Class Codes: G11B 2220/90 Tape-like record carriers
• CPC Class Codes: G11B 27/107 of operating tapes
• CPC Class Codes: G11B 27/3027 used signal is digitally coded
• CPC Class Codes: G11B 27/3063 Subcodes
• CPC Class Codes: G11B 27/322 used signal is digitally coded
• CPC Class Codes: G11B 27/326 used signal is a video-frame or a video-field (P.I.P.)
• CPC Class Codes: G11B 27/328 on a tape [TTOC]
• CPC Class Codes: H04N 5/78263 for recording on tracks inclined relative to the direction of movement of the tape
• CPC Class Codes: H04N 5/9261 involving data reduction

Abstract

A video recording medium comprising a first region for recording plural video scenes, and a second region for recording representative images of each scene of the plural video scenes as picture contents, in which picture contents retrieval information for retrieving the picture contents is recorded in the second region or in a third region provided in the vicinity thereof, which is proposed together with a video recording medium and video retrieving method capable of retrieving at high speed by searching the picture contents retrieval information.

Claims

1. A video recording medium comprising a first region for recording plural video scenes intermittently, and a second region for recording representative video data extracted from said plural video scenes, and picture contents retrieval information for retrieving one of said plural video scenes in said first region formed intermittently.

2. A video recording medium according to claim 1, further comprising a plurality of said first regions and a plurality of said second region, each of said second regions being separated from another one of said second regions by one of said first regions.

3. A video recording medium comprising a first region for recording plural video scenes intermittently, and a second region for recording representative video data extracted from said plural video scenes, and picture contents retrieval information for retrieving one of said plural video scenes in said first region formed intermittently, and a third region disposed near said second region for recording optional audio signal or cue signal.

4. A video recording medium according to claim 3, further comprising a plurality of said first regions and a plurality of said second region, each of said second regions being separated from another one of said second regions by one of said first regions.

5. A video recording medium comprising a first region for recording plural video scenes intermittently, and a second region for recording representative video data extracted from said plural video scenes disposed between the adjacent first regions, and a third region of recording picture contents retrieval information for retrieving one of said plural video scenes disposed near said second region for recording optional audio signal or cue signal.

6. A video recording medium according to claim 5, further comprising a plurality of said first regions and a plurality of said second region, each of said second regions being separated from another one of said second regions by one of said first regions.

7. A video recording apparatus comprising compression and expansion circuit means for compressing and expanding video signals expressing plural video scenes, picture contents information generating circuit means for obtaining picture contents information signal by extracting representative video information in each video scene of said plural video scenes from the compressed video and audio signal obtained from said means, picture contents retrieval information generating circuit means for generating picture contents retrieval information signal showing presence or absence of said picture contents information depending on a picture contents record request signal from said picture contents information generating circuit means, rotary magnetic head means for recording a signal in a magnetic tape, fixed magnetic head means, and tape running means for driving said magnetic tape, wherein said magnetic tape includes a first region for recording said plural video scenes, a second region formed intermittently with said first region, and a third region disposed near said second region for recording optional audio signal or cue signal, and while driving said magnetic tape by said tape running means, said compressed video and audio signal is recorded in said first region by said magnetic head means in said magnetic tape, a representative video data extracted from said plural video scenes and a picture contents information signal being recorded in said second region, and said picture contents retrieval information signal is recorded in said second region.

8. A video recording apparatus comprising compression and expansion circuit means for compressing and expanding video signals expressing plural video scenes, picture contents information generating circuit means for obtaining picture contents information signal by extracting representative video information in each video scene of said plural video scenes from the compressed video and audio signal obtained from said means, picture contents retrieval information generating circuit means for generating picture contents retrieval information signal showing presence or absence of said picture contents information depending on a picture contents record request signal from said picture contents information generating circuit means, rotary magnetic head means for recording a signal in a magnetic tape, fixed magnetic head means, and tape running means for driving said magnetic tape, wherein said magnetic tape includes a first region for recording said plural video scenes, a second region formed intermittently with said first region, and a third region disposed near said second region for recording optional audio signal or cue signal, and while driving said magnetic tape by said tape running means, said compressed video and audio signal is recorded in said first region by said magnetic head means in said magnetic tape, a representative video data extracted from said plural video scenes and a picture contents information signal being recorded in said second region, and said picture contents retrieval information signal is recorded in said third region.

9. A video retrieving method comprising magnetic head means for reproducing recorded signals from a magnetic tape, picture contents retrieval information detecting circuit means for detecting a picture contents retrieval information signal from the signals reproduced by said magnetic head, and tape running means for driving said magnetic tape, wherein said magnetic tape includes a first region for recording said plural video scenes, and a second region for recording a representative video data extracted from said plural video scenes, a picture contents information signal and said picture contents retrieval information signal, said second region being formed intermittently with said first region, and by driving said magnetic tape by said tape running means, the recorded position of the picture contents information recorded in said second region is found out by detecting by said picture contents retrieval information detecting circuit means.

10. A video retrieving method comprising magnetic head means for reproducing recorded signals from a magnetic tape, picture contents retrieval information detecting circuit means for detecting a picture contents retrieval information signal from the signals reproduced by said magnetic head, and tape running means for driving said magnetic tape, wherein said magnetic tape includes a first region for recording said plural video scenes, and a second region for recording a representative video data extracted from said plural video scenes, and a picture contents information signal, said second region being formed intermittently with said first region, and a third region for recording said picture contents retrieval information signal, and by driving said magnetic tape by said tape running means, the recorded position of the picture contents information recorded in said third region is found out by detecting by said picture contents retrieval information detecting circuit means.