Recording/playback device, recording/playback method and digital broadcast viewing history recording system

• US 8,005,343 B2
• Filed: 05/17/2007
• Issued: 08/23/2011
• Est. Priority Date: 05/17/2006
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Mizuno, Hiroyuki, Sato, Makoto, Sumiyoshi, Kazunari, Ono, Nobuhiro
• Primary Examiner(s): NGUYEN, HUY THANH
• Application Number:
  US11/749,830
• Publication Number:
  US 20070269184A1
• Time in Patent Office: 1,559 Days
• Field of Search: 386/200, 386/241, 386/248, 386/278
• US Class Current: 386/241
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/329 on a disc [VTOC]
• CPC Class Codes: H04N 2005/91328 the copy protection signal being a copy management signal, e.g. a copy generation management signal [CGMS]
• CPC Class Codes: H04N 5/76 Television signal recording
• CPC Class Codes: H04N 5/781 on disks or drums
• CPC Class Codes: H04N 5/85 on discs or drums
• CPC Class Codes: H04N 9/8042 involving data reduction

Abstract

A recorded data storing unit previously stores recorded content data. An index information storing unit stores index information corresponding to portions being grouped depending on attributes of the recorded content from the outside. A playlist creating unit creates a playlist presenting editing targets for the attributes according to specified information specified by a user for the attributes using the specified information and index information appended to the portions of the recorded content depending on the attributes. A playlist storing unit stores the playlist created by the playlist creating unit. A content editing unit edits the editing targets in recorded content in the recorded data storing unit according to the index information in the index information storing unit and the playlist in the playlist storing unit.

Claims

1. A recording/playback device comprising:

a recorded data storing unit configured to previously store recorded content;

an index information storing unit configured to store index information corresponding to portions being grouped depending on attributes of the recorded content supplied from the outside;

a playlist creating unit configured to create a playlist presenting editing targets for the attributes according to specified information specified by a user for the attributes using the specified information and index information appended to the portions of the recorded content depending on the attributes;

a playlist storing unit configured to store the playlist created by the playlist creating unit; and

a content editing unit configured to edit portions equivalent to deletion targets or playback targets as the editing targets in the recorded content being recorded in the recorded data storing unit and to delete the deletion targets and retain the playback targets according to the index information stored in the index information storing unit and the playlist stored in the playlist storing unit, wherein the content editing unit comprises;

a subdividing unit configured to subdivide the recorded content stored in the recorded data storing unit into pre-determined division units and assign index numbers to subdivided portions;

an identifying unit configured to identify deletion target portions in the recorded content using the index numbers based on the index information stored in the index information storing unit and the playlist stored in the playlist storing unit; and

a deleting unit configured to delete the recorded content portions identified as the deletion target portions based on the index numbers.

2. The recording/playback device according to claim 1 further comprising,

an index information input unit configured to select and input only index information corresponding to user-desired recorded content when index information is inputted from the outside and to supply the information to the index information storing unit.

3. The recording/playback device according to claim 1 wherein:

the recorded content is recorded video content;

the attribute is information indicating whether the portion is a CM or program content in the recorded video content of digital broadcast; and

the specified information is information specifying whether the portion is a playback target or a deletion target.

4. A recording/playback method comprising:

previously storing recorded content in a recorded data storing unit;

storing index information in an index information storing unit, in which the index information corresponds to portions being grouped depending on attributes of the recorded content supplied from the outside;

creating a playlist presenting editing targets for the attributes according to specified information specified by a user for the attributes using the specified information and index information appended to the portions of the recorded content depending on the attributes;

storing the created playlist in a playlist storing unit; and

editing portions equivalent to deletion targets or playback targets as the editing targets in the recorded content being recorded in the recorded data storing unit and deleting the deletion targets and retaining the playback targets according to the index information stored in the index information storing unit and the playlist stored in the playlist storing unit,

wherein the editing comprises;

subdividing the recorded content stored in the recorded data storing unit into pre-determined division units and assigning index numbers to subdivided portions;

identifying deletion target portions in the recorded content using the index numbers based on the index information stored in the index information storing unit and the playlist stored in the playlist storing unit; and

deleting the recorded content portions identified as the deletion target portions based on the index numbers.

5. A digital broadcast viewing history recording system comprising:

a service center configured to distribute index information;

a recording/playback device comprising;

a recorded data storing unit configured to previously store recorded content;

an index information storing unit configured to store index information corresponding to portions being grouped depending on attributes of the recorded content supplied from the outside;

a playlist creating unit configured to create a playlist presenting editing targets for the attributes according to specified information specified by a user for the attributes using the specified information and index information appended to the portions of the recorded content depending on the attributes;

a playlist storing unit configured to store the playlist created by the playlist creating unit; and

a content editing unit configured to edit portions equivalent to deletion targets or playback targets as the editing targets in the recorded content being recorded in the recorded data storing unit and to delete the deletion targets and retain the playback targets according to the index information stored in the index information storing unit and the playlist stored in the playlist storing unit, wherein the content editing unit comprises;

a subdividing unit configured to subdivide the recorded content stored in the recorded data storing unit into pre-determined division units and assign index numbers to subdivided portions;

an identifying unit configured to identify deletion target portions in the recorded content using the index numbers based on the index information stored in the index information storing unit and the playlist stored in the playlist storing unit; and

a deleting unit configured to delete the recorded content portions identified as the deletion target portions based on the index numbers; and

an image display unit and an audio output unit configured to, respectively, output video and audio played back by the recording/playback device.

6. A recording/playback device comprising:

a recorded data storing unit configured to previously store recorded content;

an index information storing unit configured to store index information corresponding to portions being grouped depending on attributes of the recorded content supplied from the outside;

a playlist creating unit configured to create a playlist presenting editing targets for the attributes according to specified information specified by a user for the attributes using the specified information and index information appended to the portions of the recorded content depending on the attributes;

a playlist storing unit configured to store the playlist created by the playlist creating unit; and

a content editing unit configured to edit portions equivalent to deletion targets or playback targets as the editing targets in the recorded content being recorded in the recorded data storing unit and to delete the deletion targets and retain the playback targets according to the index information stored in the index information storing unit and the playlist stored in the playlist storing unit,

wherein the content editing unit comprises;

an extracting unit configured to extract the playback targets in the recorded content recorded in the recorded data storing unit to create unreplicable intermediate data, according to the index information stored in the index information storing unit and the playlist stored in the playlist storing unit;

a deleting unit configured to delete the recorded content previously stored in the recorded data storing unit after creating the intermediate data; and

a validating unit configured to validate the intermediate data after deleting the recorded content to change the data into viewable data.

7. The recording/playback device according to claim 6, further comprising an index information input unit configured to select and input only index information corresponding to user-desired recorded content when index information is inputted from the outside and to supply the information to the index information storing unit.

8. The recording/playback device according to claim 6, wherein;

the recorded content is recorded video content;

the attribute is information indicating whether the portion is a CM or program content in the recorded video content of digital broadcast; and

the specified information is information specifying whether the portion is a playback target or a deletion target.

9. A recording/playback method comprising:

previously storing recorded content in a recorded data storing unit;

storing index information in an index information storing unit, in which the index information corresponds to portions being grouped depending on attributes of the recorded content supplied from the outside;

creating a playlist presenting editing targets for the attributes according to specified information specified by a user for the attributes using the specified information and index information appended to the portions of the recorded content depending on the attributes;

storing the created playlist in a playlist storing unit; and

editing portions equivalent to deletion targets or playback targets as the editing targets in the recorded content being recorded in the recorded data storing unit and deleting the deletion targets and retaining the playback targets according to the index information stored in the index information storing unit and the playlist stored in the playlist storing unit,

wherein the editing comprises;

extracting the playback targets in the recorded content recorded in the recorded data storing unit to create unreplicable intermediate data, according to the index information stored in the index information storing unit and the playlist stored in the playlist storing unit;

deleting the recorded content previously stored in the recorded data storing unit after creating the intermediate data; and

validating the intermediate data after deleting the recorded content to change the data into viewable data.

10. A digital broadcast viewing history recording system comprising:

a service center configured to distribute index information;

a recording/playback device comprising;

a recorded data storing unit configured to previously store recorded content;

an index information storing unit configured to store index information corresponding to portions being grouped depending on attributes of the recorded content supplied from the outside;

a playlist creating unit configured to create a playlist presenting editing targets for the attributes according to specified information specified by a user for the attributes using the specified information and index information appended to the portions of the recorded content depending on the attributes;

a playlist storing unit configured to store the playlist created by the playlist creating unit; and

a content editing unit configured to edit portions equivalent to deletion targets or playback targets as the editing targets in the recorded content being recorded in the recorded data storing unit and to delete the deletion targets and retain the playback targets according to the index information stored in the index information storing unit and the playlist stored in the playlist storing unit, wherein the content editing unit comprises;

an extracting unit configured to extract the playback targets in the recorded content recorded in the recorded data storing unit to create unreplicable intermediate data, according to the index information stored in the index information storing unit and the playlist stored in the playlist storing unit;

a deleting unit configured to delete the recorded content previously stored in the recorded data storing unit after creating the intermediate data; and

a validating unit configured to validate the intermediate data after deleting the recorded content to change the data into viewable data; and

an image display unit and an audio output unit configured to, respectively, output video and audio played back by the recording/playback device.