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1. WO1996006503 - METHOD AND APPARATUS FOR INSERTING SOURCE IDENTIFICATION DATA INTO A VIDEO SIGNAL

Publication Number WO/1996/006503
Publication Date 29.02.1996
International Application No. PCT/US1995/010665
International Filing Date 22.08.1995
Chapter 2 Demand Filed 29.02.1996
IPC
G11B 20/00 2006.01
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
H04N 5/913 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
76Television signal recording
91Television signal processing therefor
913for scrambling
H04N 7/08 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
08Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band
H04N 7/081 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
08Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band
081the additional information signals being transmitted by means of a subcarrier
H04N 7/16 2011.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
16Analogue secrecy systems; Analogue subscription systems
G06F 7/72 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
7Methods or arrangements for processing data by operating upon the order or content of the data handled
60Methods or arrangements for performing computations using a digital non-denominational number representation, i.e. number representation without radix; Computing devices using combinations of denominational and non-denominational quantity representations
72using residue arithmetic
CPC
G06F 7/725
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
7Methods or arrangements for processing data by operating upon the order or content of the data handled
60Methods or arrangements for performing computations using a digital non-denominational number representation, i.e. number representation without radix; Computing devices using combinations of denominational and non-denominational quantity representations ; , e.g. using difunction pulse trains, STEELE computers, phase computers
72using residue arithmetic
724Finite field arithmetic
725over elliptic curves
G11B 20/00086
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
G11B 20/00094
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
00094involving measures which result in a restriction to authorised record carriers
G11B 20/0021
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
0021involving encryption or decryption of contents recorded on or reproduced from a record carrier
G11B 20/00913
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
00884involving a watermark, i.e. a barely perceptible transformation of the original data which can nevertheless be recognised by an algorithm
00913based on a spread spectrum technique
H04N 2005/91335
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
76Television signal recording
91Television signal processing therefor
913for scrambling ; ; for copy protection
91307by adding a copy protection signal to the video signal
91335the copy protection signal being a watermark
Applicants
  • MACROVISION CORPORATION [US/US]; 1341 Orleans Drive Sunnyvale, CA 94089, US
Inventors
  • COPELAND, Gregory, C.; US
Agents
  • BRILL, Gerow, D.; Macrovision Corporation 1341 Orleans Drive Sunnyvale, CA 94089, US
Priority Data
08/294,98324.08.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS FOR INSERTING SOURCE IDENTIFICATION DATA INTO A VIDEO SIGNAL
(FR) PROCEDE ET DISPOSITIF D'INSERTION DE DONNEES D'IDENTIFICATION ORIGINE DANS UN SIGNAL VIDEO
Abstract
(EN)
The source identification data (Finger Print) is injected into the active picture area of a video signal without disturbing the viewing of the video signal and the data is retrieved by a data reader, called a Fingerprint Reader. The data injection or 'fingerprinting' process consists of dynamically offsetting the video pedestal to carry information which can then be read back from any videotape made from the output of the data-injecting unit. In particular, the fingerprint carries the ID number of the unit used and the current date. The offset lasts for one entire field and has an amplitude of approxmately 0.5 IRE that is, a given field either has the nominal setup or a setup value differing from nominal by 0.5 IRE. The data is repeated every 128 fields in order to provide ample samples for the reader to detect and display the source identification data.
(FR)
Les données d'identification origine (empreintes digitales) sont injectées dans la zone d'image active d'un signal vidéo sans interférer avec la visualisation obtenue au moyen du signal vidéo. Les données sont récupérées ensuite par un lecteur de données ou 'Lecteur d'Empreintes Digitales'. Le procédé d'injection des données ou de 'reproduction d'empreintes digitales' consiste à décaler dynamiquement le palier de suppression vidéo de façon à véhiculer l'information qui peut être restituée en lecture depuis n'importe quelle bande vidéo réalisée à partir de la sortie de l'unité d'injection de données. En l'occurrence, l'empreinte digitale comporte le numéro d'identification de l'unité utilisée et la date du jour. Le décalage dure une zone entière et présente une amplitude d'environ 0,5 unités I.R.E., c'est à dire qu'une zone spécifique présentera des caractéristiques constitutives nominales ou des valeurs de caractéristiques constitutives s'écartant de 0,5 unités I.R.E. des valeurs nominales. Les données se répètent toutes les 128 zones de façon à fournir au lecteur un vaste échantillonnage et à afficher les données d'identification origine.
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