Apparatus and method for recording and reproducing video data

• US 20020054755A1
• Filed: 11/07/2001
• Published: 05/09/2002
• Est. Priority Date: 11/08/2000
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Unno, Hiroaki
• Granted Patent: US 7,171,109 B2
• Time in Patent Office: Days
• US Class Current: 386/94
• CPC Class Codes: G11B 19/04 Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions
• CPC Class Codes: G11B 20/00086 Circuits for prevention of unauthorised reproduction or copying, e.g. piracy indicating unauthorised use of record carriers in general G11B23/28; scrambling for television signal recording H04N5/913; network architectures or network protocols for network security H04L63/00; cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
• CPC Class Codes: G11B 20/00768 wherein copy control information is used, e.g. for indicating whether a content may be copied freely, no more, once, or never, by setting CGMS, SCMS, or CCI flags
• CPC Class Codes: G11B 2220/2562 DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/105 of operating discs
• 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 5/913 for scrambling ; for copy protection
• CPC Class Codes: H04N 9/8042 involving data reduction
• CPC Class Codes: H04N 9/8063 using time division multiplex of the PCM audio and PCM video signals
• CPC Class Codes: H04N 9/8227 the additional signal being at least another television signal

Abstract

When a video source, which is not limited in the number of copying operations thereof, has been recorded, a reduced image thereof is created and stored in a recording medium. Upon thumbnail image display (upon execution of a thumbnail function), the reduced image is displayed at a high speed. On the other hand, when a video source, only one-generation recording of which is enabled, has been recorded, no reduced image is created (stored) so as to avoid “copy limitation violation”. When the only-one-generation-copy-enabled video source mage has been recorded, the thumbnail display function is realized by storing, in the recording medium, a pointer indicative of the position of the original image of a thumbnail image in video data.

Claims

1. A recording/reproducing apparatus comprising:

a video data storing section storing video data and a copy control information in a recording medium;

a determination section determining, on copy control information, whether the image data is only-one-generation-copy-enabled data or copy-unrestricted-enabled data;

a reduced-image storing section reducing a designated image contained in the video data and storing the reduced image in the recording medium, if the determination section determines that the image data is the copy-unrestricted-enabled data;

a inhibition section inhibiting a storage operation of the reduced-image storing section, if the determination section determines that the video data is the only-one-generation-copy-enabled data; and

a video data reproduction section reproducing the video data stored in the recording medium by the video data storing section, based on the reduced image designated.

2. The recording/reproducing apparatus according to claim 1, further comprising a position information storing section storing, in the recording medium, position information indicative of a storage position of the designated image contained in the stored video data, if the determination section determines that the video data is the only-one-generation-copy-enabled data, and wherein the video data reproduction section reproduces the video data stored in the recording medium based on one of the position information and reduced image designated.

3. The recording/reproducing apparatus according to claim 1, further comprising a displaying section displaying a message that the reduced image cannot be stored, if the determination section determines that the video data is the only-one-generation-copy-enabled data.

4. A method for recording and reproducing video data, comprising the steps of;

storing video data and a copy control information in a recording medium;

determining whether the video data is only-one-generation-copy-enabled data or copy-unrestricted-enabled data, based on the copy control signal;

reducing a designated image contained in the video data and storing the reduced image in the recording medium, if the video data is determined to be the copy-unrestricted-enabled data;

inhibiting storage of the reduced image if the video data is determined to be the only-one-generation-copy-enabled data; and

reproducing the video data stored in the recording medium when the reduced image has been designated.

5. The method according to claim 4, further comprising the step of storing, in the recording medium, position information indicative of a storage position of the designated image contained in the stored video data, if the video data is determined to be the only-one-generation-copy-enabled data.

6. The method according to claim 4, further comprising the step of displaying a message that the reduced image cannot be stored, if the video data is determined to be the only-one-generation-copy-enabled data.

7. An information recording medium including a program, the program comprising:

storing video data and a copy control information in a recording medium;

determining, on the copy control information, whether the video data is only-one-generation-copy-enabled data or copy-unrestricted-enabled data;

reducing a designated image contained in the video data and storing the reduced image in the recording medium, if the video data is determined to be the copy-unrestricted-enabled data;

inhibiting storage of the reduced image if the video data is determined to be the only-one-generation-copy-enabled data; and

reproducing the video data stored in the recording medium based on the reduced image designated.