Verification of image data

• US 6,535,919 B1
• Filed: 06/25/1999
• Issued: 03/18/2003
• Est. Priority Date: 06/29/1998
• Status: Expired due to Fees

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Inoue, Hiroshi, Nakagawa, Toshiyuki
• Primary Examiner(s): Najjar, Saleh
• Application Number:
  US09/339,862
• Time in Patent Office: 1,362 Days
• Field of Search: 709/225, 709/226, 709/229, 709/231, 705/51, 705/54, 705/57, 705/59
• US Class Current: 709/229
• CPC Class Codes: H04N 19/20 using video object coding
• CPC Class Codes: H04N 21/23412 for generating or manipulating the scene composition of objects, e.g. MPEG-4 objects
• CPC Class Codes: H04N 21/234318 by decomposing into objects, e.g. MPEG-4 objects
• CPC Class Codes: H04N 21/2541 Rights Management protecting software against unauthorised usage in a vending or licensing environment G06F21/10; security in data switching network management H04L41/28; security management or policies for network security H04L63/20; access security in wireless networks H04W12/08
• CPC Class Codes: H04N 21/43074 of additional data with content streams on the same device, e.g. of EPG data or interactive icon with a TV program
• CPC Class Codes: H04N 21/44012 involving rendering scenes according to scene graphs, e.g. MPEG-4 scene graphs
• CPC Class Codes: H04N 21/4622 Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet web site content organization and management for information retrieval from the Internet G06F16/958; transmission by internet of broadcast information H04H60/82; stock exchange data over packet-switching network H04L12/1804; push services including data channel over packet-switching network H04L12/1859
• CPC Class Codes: H04N 21/4782 Web browsing , e.g. WebTV
• CPC Class Codes: H04N 21/835 Generation of protective data, e.g. certificates protecting software against unauthorised usage in a vending or licensing environment G06F21/10
• CPC Class Codes: H04N 7/52 Systems for transmission of a pulse code modulated video signal with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal assembling of a multiplex stream by combining a video stream with other content or additional data, remultiplexing of multiplex streams, insertion of stuffing bits into the multiplex stream, assembling of a packetised elementary stream at server side H04N21/236; disassembling of a multiplex stream, remultiplexing of multiplex streams, extraction or processing of Service Information, disassembling of packetised elementary stream at client side H04N21/434

Abstract

Image data, such as image data coded in MPEG4 format, is verified by a client receiving an information data stream that is generated by multiplexing a plurality of coded object data and associated intellectual property management data, from a contents distribution server, wherein the intellectual property management data includes source information representing a copyright holder of the object data. Verification request data is transmitted, based on the source information included in the received intellectual property management data, to the copyright holder, via a different communication channel from that used for receiving the information data stream. The client receives, from the copyright holder, verification result data relating to the object data and then, a decoding process of the object data is controlled based on the verification result data.

Claims

1. An information processing method comprising the steps of:

a) receiving an information data stream, generated by multiplexing a plurality of coded object data and associated intellectual property management data, from a contents distribution server;

b) verifying said object data on said received intellectual property management data;

c) transmitting verification result data and resend request data that requests a resend of said information data stream from the beginning, to said contents distribution server;

d) receiving an information data stream resent from said contents distribution server; and

e) reproducing said resent information data stream.

2. The method according to claim 1, wherein said object data is image data.

3. The method according to claim 2, wherein said object data comprises one moving image scene.

4. The method according to claim 3, wherein said object data is bit stream data conforming to an MPEG4 coding scheme.

5. The method according to claim 4, wherein said transmitting step uses an upstream of an MPEG4 bit stream.

6. A computer readable medium on which is stored a computer program that, when executed, enables a computer apparatus to perform an information processing method according to claim 1.

7. A computer program product which, when executed, enables a computer apparatus to perform an information processing method according to claim 1.

8. An information processing method, executed in a contents distribution server, comprising the steps of:

a) transmitting an information data stream, generated by multiplexing a plurality of coded object data and associated intellectual property management data, to a client;

b) receiving verification result data and resend request data that requests a resent of said information data stream, from said client; and

c) transmitting said information data stream from the beginning based on said verification result data and said resent request data, to the client.

9. The method according to claim 8, wherein said object data is image data.

10. The method according to claim 9, wherein said object data comprises one moving image scene.

11. The method according to claim 10, wherein said object data is bit stream data conforming to an MEPG4 coding scheme.

12. A computer readable medium on which is stored a computer program that, when executed, enables a computer apparatus to perform an information processing method according to claim 8.

13. A computer program product which, when executed, enables a computer apparatus to perform an information processing method according to claim 8.