Encoding, producing and decoding methods of object data, and apparatuses for encoding, producing and decoding the object data, and programs for encoding and decoding the object data, and recording medium for the object data

• US 20020168086A1
• Filed: 04/18/2002
• Published: 11/14/2002
• Est. Priority Date: 04/18/2001
• Status: Abandoned Application

• Current Assignee: Victor Company of Japan Limited (JVC Kenwood Corporation)
• Original Assignee: Victor Company of Japan Limited (JVC Kenwood Corporation)
• Inventors: Sugahara, Takayuki
• Application Number:
  US10/124,768
• Publication Number:
  US 20020168086A1
• Time in Patent Office: Days
• US Class Current: 382/100
• CPC Class Codes: G06T 1/0021 Image watermarking

Abstract

When reproducing contents, which are encoded by an MPEG compressor (12) in accordance with each of a plurality of objects and recorded in a recording medium (20), a reproduction protection information based on a region or rating for each of contents is produced by a reproduction protection information generator (13). The reproduction protection information is inserted into an object signal by a control header inserter (14) or an electronic watermark inserter (16) and recorded. When reproducing the object signal, synthesizing a certain object signal, which is prohibited to reproduce by a reproduction protection information, is restricted by a reproduction protection controller (34), and then a video signal, which is permitted to reproduce is produced.

Claims

1. An encoding method of object data comprising steps of:

producing a reproduction protection information signal so as to permit reproduction of a plurality of object data constituting contents;

compression-encoding each of the plurality of object data and resulted in a compression-encoded signal of each object; and

multiplexing the reproduction protection information signal and the compression-encoded signal and producing a multiplexed signal.

2. The encoding method of object data in accordance with claim 1, wherein the reproduction protection information signal is produced by an electronic watermarking method.

3. A producing method of object data comprising steps of:

producing a reproduction protection information signal so as to permit reproduction of a plurality of object data constituting contents;

compression-encoding each of the plurality of object data and resulted in a compression-encoded signal of each object;

multiplexing the reproduction protection information signal and the compression-encoded signal and producing a multiplexed signal thereby; and

producing a packetized multiplexed signal by packetizing the multiplexed signal produced in the step of multiplexing by every predetermined amount of data.

4. A decoding method of object data for decoding a multiplexed signal produced by multiplexing a reproduction protection information signal for permitting reproduction of a plurality of object data constituting contents and a compression-encoded signal of each object obtained by compression-encoding each of the plurality of object data, the decoding method comprising steps of:

separating the multiplexed signal into the compression-encoded signal and the reproduction protection information signal; and

synthesizing the plurality of object data permitted to reproduce by the reproduction protection information signal and obtaining a synthesized object signal thereby, wherein the plurality of object data is obtained by decoding the compression-encoded signal.

5. An apparatus for encoding object data comprising:

compression-encoding means for compression-encoding each of a plurality of object data constituting contents and for obtaining a compression-encoded signal of each object thereby;

reproduction protection information signal producing means for producing a reproduction protection information signal so as to permit reproduction of the plurality of object data; and

multiplexed signal producing means for multiplexing the reproduction protection information signal produced by the reproduction protection information signal producing means and the compression-encoded signal obtained by the compression-encoding means and for obtaining a multiplexed signal thereby.

6. An apparatus for producing object data comprising:

reproduction protection information signal producing means for producing a reproduction protection information signal so as to permit reproduction of a plurality of object data constituting contents;

multiplexed signal producing means for multiplexing the reproduction protection information signal produced by the reproduction protection information signal producing means and a compression-encoded signal obtained by compression-encoding each of the plurality of object data and for obtaining a multiplexed signal thereby; and

packetized data producing means for packetizing the multiplexed signal by every predetermined amount of data and for producing a packetized multiplexed signal thereby.

7. An apparatus for decoding object data, wherein the apparatus decodes a multiplexed signal produced by multiplexing a reproduction protection information signal for permitting reproduction of a plurality of object data constituting contents and each compression-encoded signal of each object obtained by compression-encoding each of the plurality of object data, the apparatus comprising:

signal separating means for separating the multiplexed signal into the compression-encoded signal and the reproduction protection information signal; and

signal synthesizing means for synthesizing the plurality of object data permitted to reproduce by the reproduction protection information signal and for obtaining a synthesized object signal thereby, wherein the plurality of object data is obtained by decoding the compression-encoded signal.

8. A program for encoding object data by executing a computer comprising steps of:

producing a reproduction protection information signal for permitting reproduction of a plurality of object data constituting contents in accordance with a region information and a rating information; and

producing a multiplexed signal by multiplexing each compression-encoded signal of each object obtained by compression-encoding each of the plurality of object data.

9. A program for decoding object data, wherein the program decodes a multiplexed signal produced by multiplexing a reproduction protection information signal related to a region information and a rating information so as to permit reproduction of a plurality of object data constituting contents and each compression-encoded signal of each object obtained by compression-encoding each of the plurality of object data by executing a computer, the program comprising steps of:

separating the multiplexed signal into the compression-encoded signal and the reproduction protection information signal; and

synthesizing the plurality of object data permitted to reproduce by the reproduction protection information signal and obtaining a synthesized object signal thereby, wherein the plurality of object data is obtained by decoding the compression-encoded signal.

10. A recording medium for object data characterized in that the recording medium is recorded with a multiplexed signal obtained by multiplexing:

a reproduction protection information signal produced so as to permit reproduction of a plurality of object data constituting contents in accordance with a region information and a rating information; and

a compression-encoded signal of each object obtained by compression-encoding each of the plurality of object data.