Time shift reproduction method and device and bookmark being used in same

• US 20030021582A1
• Filed: 07/26/2002
• Published: 01/30/2003
• Est. Priority Date: 07/27/2001
• Status: Active Grant

• Current Assignee: NEC Personal Computers, Ltd.
• Original Assignee: NEC Corporation
• Inventors: Sawada, Hideki
• Granted Patent: US 7,546,022 B2
• Time in Patent Office: Days
• US Class Current: 386/46
• CPC Class Codes: G11B 2220/2562 DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
• CPC Class Codes: G11B 2220/61 wherein solid state memory is used for storing A/V content storing computer data in solid state memories G06F
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/11 by using information not detectable on the record carrier
• CPC Class Codes: H04N 5/76 Television signal recording
• CPC Class Codes: H04N 9/8042 involving data reduction
• CPC Class Codes: H04N 9/8205 involving the multiplexing of an additional signal and the colour video signal

Abstract

A method for reproducing a scene by a time shift is provided in which, by transferring a bookmark created by one viewer to an other viewer, the other viewer can also see a scene that the one viewer desires to see and the scene that the one viewer desires to see can be seen commonly together with the other viewer. To reproduce a recorded moving picture, a scene worthy of note is accessed by using the bookmark. When moving picture information is recorded, picture recording time of a specified screen region is stored in a manner that picture recording actual time of a desired scene is associated with the bookmark and, when reproduction is made, access is made to the scene based on time between picture recording actual time of the scene and of the specified picture screen region and image information of the specified picture screen.

Claims

1. A time shift reproduction method comprising:

a step of, while moving pictures are recorded on a specified storage medium, storing actual time of recording of at least one frame of a specified moment scene out of said moving pictures being recorded at present on said storage medium;

a step of creating a bookmark indicating actual time of recording of a frame of a scene desired to be seen out of said moving pictures having been recorded on said storage medium; and

a step of, when said scene desired to be seen is to be reproduced, obtaining access to or jumping to said frame of said scene desired to be seen by using said bookmark.

2. The time shift reproduction method according to claim 1, wherein reproduction is made by obtaining access to said frame of said scene desired to be seen based on time between actual time of recording of said frame of said specified moment scene and actual time of recording of said frame of said scene desired to be seen and on information about a place where said frame of said specified moment scene is stored.

3. The time shift reproduction method according to claim 2, wherein said scene desired to be seen is identified and accessed by using a time code serving as said information about a place where said scene desired to be seen is stored and being provided to synchronize a video with a voice and by adding said time to said time code.

4. The time shift reproduction method according to claim 2, wherein said scene desired to be seen is identified and accessed by using a cumulative number of bits as said information about a place where said scene desired to be seen is stored and by adding a value obtained by multiplying said time by a bit rate to said cumulative number of bits.

5. The time shift reproduction method according to claim 2, wherein said scene desired to be seen is identified and accessed by using a cumulative number of frames as said information about a place where said scene desired to be seen is stored and by adding a value obtained by multiplying said time by a frame rate to said cumulative number of frames.

6. The time shift reproduction method according to claim 2, wherein actual time of recording of pictures being associated with said bookmark is used when reproduction is made.

7. A bookmark to be used for a time shift reproduction method, said method comprising:

a step of, while moving pictures are recorded on a specified storage medium, storing actual time of recording of at least one frame of a specified moment scene out of said moving pictures being recorded at present on said storage medium;

a step of creating said bookmark indicating actual time of recording of a frame of a scene desired to be seen out of said moving pictures having been recorded on said storage medium; and

a step of, when said scene desired to be seen is to be reproduced, obtaining access to or jumping to said frame of said scene desired to be seen by using said bookmark.

8. A time shift reproduction device for reproducing a recorded moving picture by obtaining access to a specified scene using a bookmark comprising:

a storing unit to store, when said moving picture is recorded, actual time of recording of at least one frame of a specified moment scene out of said moving;

a bookmark storing section to store actual time of recording of a frame of a scene desired to be seen in a manner that said actual time is associated with said bookmark;

an accessing unit to obtain access to said scene desired to be seen; and

wherein said accessing unit obtains access to said frame of said frame of said scene desired to be seen based on time between said actual time of recording of said frame of said specified moment scene and actual time of recording of said frame of said scene desired to be seen and on said information about a place where said frame of said specified moment scene is stored.

9. The time shift reproduction device according to claim 8, wherein said accessing unit identifies said scene desired to be seen by using a time code serving as said information about a place where said scene desired to be seen is stored and being provided to synchronize a video with a voice and by adding said time to said time code.

10. The time shift reproduction device according to claim 8, wherein said accessing unit identifies said frame of said scene desired to be seen by using a cumulative number of bits as said information about a place where said frame of said scene desired to be seen is stored and by adding a value obtained by multiplying said time by a bit rate to said cumulative number of bits.

11. The time shift reproduction device according to claim 8, wherein said accessing unit identifies said frame of said scene desired to be seen by using a cumulative number of frames as said information about a place where said frame of said scene desired to be seen is stored and by adding a value obtained by multiplying said time by a frame rate to said cumulative number of frames.

12. The time shift reproduction device according to claim 8, wherein actual time of recording of pictures being associated with said bookmark is used when reproduction is made.

13. A bookmark to be used for a time shift reproduction device for reproducing a recorded moving picture by obtaining access to a specified scene using said bookmark, said device comprising:

a storing unit to store, when said moving picture is recorded, actual time of recording of at least one frame of a specified moment scene out of said moving;

a bookmark storing section to store actual time of recording of a frame of a scene desired to be seen in a manner that said actual time is associated with said bookmark;

an accessing unit to obtain access to said scene desired to be seen; and

wherein said accessing unit obtains access to said frame of said frame of said scene desired to be seen based on time between said actual time of recording of said frame of said specified moment scene and actual time of recording of said frame of said scene desired to be seen and on said information about a place where said frame of said specified moment scene is stored.