Custom character-coding compression for encoding and watermarking media content

• US 7,492,902 B2
• Filed: 05/05/2004
• Issued: 02/17/2009
• Est. Priority Date: 07/03/1997
• Status: Expired due to Fees

• Current Assignee: Hanger Solutions, LLC (IP Investments Group LLC)
• Original Assignee: AT&T Corporation (AT&T, Inc.)
• Inventors: Snyder, James H., Quackenbush, Schuyler Reynier, Lacy, John Blakeway
• Primary Examiner(s): Barron, Jr.; Gilberto
• Assistant Examiner(s): Homayounmehr; Farid
• Application Number:
  US10/839,368
• Publication Number:
  US 20040205485A1
• Time in Patent Office: 1,749 Days
• Field of Search: 380/217, 380/269, 708/203, 709/247, 345/544, 345/545
• US Class Current: 380/269
• CPC Class Codes: G06T 1/0021 Image watermarking
• CPC Class Codes: G06T 2201/0053 Embedding of the watermark in the coding stream, possibly without decoding; Embedding of the watermark in the compressed domain
• CPC Class Codes: G11B 20/00007 Time or data compression or expansion audio compression based on psychoacoustics G10L19/00; data processing for reproducing audio data at different playback speeds G10L21/04; video compression H04N19/00; data compression per se H03M7/30
• 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 20/0021 involving encryption or decryption of contents recorded on or reproduced from a record carrier
• CPC Class Codes: G11B 20/00884 involving a watermark, i.e. a barely perceptible transformation of the original data which can nevertheless be recognised by an algorithm
• CPC Class Codes: H04N 19/00 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
• CPC Class Codes: H04N 21/23892 involving embedding information at multiplex stream level, e.g. embedding a watermark at packet level
• CPC Class Codes: H04N 21/8358 involving watermark protecting executable software by watermarking G06F21/16; image watermarking in general G06T1/0021; watermarks inserted in still images for transmission purposes H04N1/32144; inserting watermarks during video coding H04N19/467

Abstract

An apparatus for compressing media content is disclosed. The apparatus divides the media content into at least three predetermined portions, compresses each of the at least three portions using one of at least three different compression algorithms and makes the at least three compressed predetermined portions publicly available. Making the portions publicly available includes, for example, transmitting the portions over a computer network such as the Internet.

Claims

1. A system for compressing media content, the system comprising:

a module configured to divide the media content into at least three predetermined portions;

a module configured to compress each of the at least three portions using one of at least three different compression algorithms; and

a module configured to make the at least three compressed predetermined portions publicly available.

2. The system of claim 1, further comprising:

a module configured to group each of the at least three compressed portions of the media content into at least three portions of a data frame.

3. The system of claim 2, wherein the module configured to make the at least three predetermined portions publicly available further transmits the data frame over a computer network.

4. The system of claim 1, wherein the functional block module configured to make the at least three compressed predetermine portions publicly available further stores the at least three compressed predetermined portions in a memory device.

5. The system of claim 4, wherein the memory device is a CD ROM.

6. The system of claim 1, wherein at least one of the at least three compression algorithms is a private data-based compression algorithm.

7. The system of claim 6, wherein at least one of the at least three compression algorithms is public data-based compression algorithm.

8. The system of claim 6, wherein the private data-based compression algorithm includes associated initial data, the apparatus further comprising:

a module configured to encrypt the associated initial data of the at least one private data-based compression algorithm; and

a module configured to make the encrypted associated initial data publicly available.

9. The apparatus of claim 2, wherein the module configured to make the three compressed portions publicly available further comprises transmits the frame over a computer network.