System and method for distributing perceptually encrypted encoded files of music and movies

• US 20030079222A1
• Filed: 07/16/2001
• Published: 04/24/2003
• Est. Priority Date: 10/06/2000
• Status: Abandoned Application

• Current Assignee: Jesse Bridgewater, Patrick Oscar Boykin, Riccardo Boscolo
• Original Assignee: Jesse Bridgewater, Patrick Oscar Boykin, Riccardo Boscolo
• Inventors: Bridgewater, Jesse, Boykin, Patrick Oscar, Boscolo, Riccardo
• Application Number:
  US09/907,471
• Publication Number:
  US 20030079222A1
• Time in Patent Office: Days
• US Class Current: 725/31
• CPC Class Codes: H04N 21/23106 involving caching operations prefetching while addressing of a memory level in which the access to the desired data or data block requires associative addressing means within memory systems or architectures G06F12/0862; caching at an intermediate stage in a data network H04L67/568
• CPC Class Codes: H04N 21/234327 by decomposing into layers, e.g. base layer and one or more enhancement layers
• CPC Class Codes: H04N 21/2347 involving video stream encryption
• CPC Class Codes: H04N 21/23476 by partially encrypting, e.g. encrypting the ending portion of a movie
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• CPC Class Codes: H04N 21/44055 by partially decrypting, e.g. decrypting a video stream that has been partially encrypted
• CPC Class Codes: H04N 7/1675 Providing digital key or authorisation information for generation or regeneration of the scrambling sequence pseudo-random number generators in general G06F7/58

Abstract

The present invention is a system for transmitting a digital signal which includes an encoder, a perceptual encrypting system and a transmitter. The encoder band-compression encodes a first digital signal as encoded data defining an image. The perceptual encrypting system is coupled to the and perceptually encrypts the encoded data to generate restricted video data as perceptually encrypted encoded data. The transmitter is coupled to the perceptual encrypting system and transmits the perceptually encrypted encoded data. A combined receiver and decoder for the restricted video data as perceptually encrypted encoded data includes a receiver and a decoder. The receiver receives the perceptually encrypted encoded data. The decoder is coupled to the receiver and decodes the perceptually encrypted encoded data to generate low quality video.

Claims

1. A system for transmitting a digital signal comprising:

a. an encoder for band-compression encoding a first digital signal as encoded data defining an image;

b. a perceptual encrypting system coupled to said encoder wherein said perceptual encrypting system perceptually encrypts said encoded data to generate restricted video data as perceptually encrypted encoded data; and

c. a transmitter coupled to said perceptual encrypting system wherein said transmitter transmits said perceptually encrypted encoded data.

2. A combined receiver and decoder for a restricted video data as perceptually encrypted encoded data according to claim 1, said combined receiver and decoder comprises:

a. a receiver which receives said perceptually encrypted encoded data; and

b. a decoder coupled to said receiver wherein said decoder decodes said perceptually encrypted encoded data to generate low quality video.

3. A combined receiver, perceptual decrypting system and decoder for a restricted video data as perceptually encrypted encoded data according to claim 1, said combined receiver, perceptual decrypting system and decoder comprising:

a. a receiver which receives said perceptually encrypted encoded data;

b. a perceptual decrypting system coupled to said receiver wherein said perceptual decrypting system perceptually decrypts said perceptually encrypted encoded data to generate encoded data; and

c. an decoder coupled to said perceptual decrypting system wherein said decoder decodes the file of encoded data to generate high quality video.