Gregory K Copeland

US Patent:

56596138, Aug 19, 1997

Filed:

Jun 7, 1995

Appl. No.:

8/473047

Inventors:

Gregory C. Copeland - San Jose CA
John O. Ryan - Cupertino CA

Assignee:

Macrovision Corporation - Sunnyvale CA

International Classification:

G11B 2328

US Classification:

380 3

Abstract:

A method and apparatus for copyright protection for various recording media such as Digital Video Discs (DVDs) uses a combination of a Video Finger Print Signal and an Authenticating Signature to permit the player to handle either copy-protected or non-copy-protected media, in a manner that is difficult to compromise. Both a Video Finger Print Signal and an Authenticating Signature are recorded on the media only when copy-protection is required. The nature of this Authenticating Signature is such that it will not be transferred to illicit copies made on CD recorders. When either an original protected or an original non-protected disk is played, the presence or absence of the Authenticating Signature causes the player to correctly play the program video. All original DVDs therefore play normally. When a copy of a non-protected CD is played, the absence of the Video Print Signal also causes the player to correctly playback the video signal data.

US Patent:

56686030, Sep 16, 1997

Filed:

May 22, 1996

Appl. No.:

8/651480

Inventors:

Gregory C. Copeland - San Jose CA

Assignee:

Macrovision Corporation - Sunnyvale CA

International Classification:

H04N 708

US Classification:

348473

Abstract:

A method and apparatus for inserting source identification data into a video signal prior to its transmission, recording or display. 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 approximately 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.

US Patent:

57546487, May 19, 1998

Filed:

Jun 20, 1997

Appl. No.:

8/880002

Inventors:

John O. Ryan - Cupertino CA
E. Fraser Morrison - Redwood City CA
Gregory C. Copeland - San Jose CA

Assignee:

Macrovision Corporation - Sunnyvale CA

International Classification:

H04L 900
H04K 100
G06F 704
G07D 700

US Classification:

380 4

Abstract:

A system for providing security and tracking data for rental video media, including digital video discs and digital video cassettes. Those new formats for video players and media allow for inclusion of security features which both allow tracking of rental of such media and prevent unauthorized rental thereof. Each player includes a decision circuit which plays a particular disc (or tape) only if a player identification number recorded on a special separate authorization memory card is the same as the player identification stored in the player, and if a movie identification number optically read from the disc matches a movie identification number recorded on the special card. A corresponding apparatus is provided at the video rental store which, at the time of rental, records on the authorization card in encrypted form the movie identification number and the number of the particular disc player for which that rental is intended. The encryption uses the private key of a public key system, the public key and the modulus being pre-recorded on the optical portion of the disc.

US Patent:

57398640, Apr 14, 1998

Filed:

Aug 24, 1994

Appl. No.:

8/294983

Inventors:

Gregory C. Copeland - San Jose CA

Assignee:

Macrovision Corporation - Sunnyvale CA

International Classification:

H04N 708

US Classification:

348473

Abstract:

A method and apparatus for inserting source identification data into a video signal prior to its transmission, recording or display. 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 approximately 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.

US Patent:

60673192, May 23, 2000

Filed:

Sep 3, 1997

Appl. No.:

8/922878

Inventors:

Gregory Clark Copeland - San Jose CA

Assignee:

Integrated Device Technology, Inc. - Santa Clara CA

International Classification:

H03H 730
H03H 740

US Classification:

375232

Abstract:

A method and apparatus for equalizing a received quadrature amplitude modulated signal is disclosed. To equalize the signal, a band edge equalizer (BEE) is used in combination with a symbol spaced equalizer (SSE) and possibly a decision feedback equalizer (DFE). The equalizer's are used along a series path to equalize the QAM signal in a series of equalization operations. By separating the equalization of the signal to separate equalizers, the cost of the equalization can be reduced without substantially affecting performance. In particular, band edge equalizing the QAM signal and symbol space equalizing the symbol can reduce the number of multiplies per second required by any particular equalizer. Accordingly, the equalizers used can be less expensive. Also, using a decimating circuit between the BEE and the SSE that decimates the sample rate of the signal being provided to the SSE can further reduce the number of multiplies per second that must be performed by the SSE.

US Patent:

57546495, May 19, 1998

Filed:

Jun 23, 1997

Appl. No.:

8/880203

Inventors:

John O. Ryan - Cupertino CA
E. Fraser Morrison - Redwood City CA
Gregory C. Copeland - San Jose CA

Assignee:

Macrovision Corp. - Sunnyvale CA

International Classification:

H04L 900
H04K 100
G11B 1504
G11B 1904
G07D 700

US Classification:

380 4

Abstract:

A video disc designed for providing security and tracking data in the rental video media market. Those new formats for video players and media allow for inclusion of security features which both allow tracking of rental of such media and prevent unauthorized rental thereof Each player includes a decision circuit which plays a particular optical disc only if a player identification number recorded on a special separate magnetic track on the optical disk is the same as the player identification stored in the player, and if a movie identification number optically read from the disc matches a movie identification number recorded on the special separate magnetic track. A corresponding apparatus is provided at the video rental store which, at the time of rental, records on a magnetic portion of the media in encrypted form the movie identification number and the number of the particular disc player for which that rental is intended. The authorization encryption uses the private key of a public key system, the public key and the modulus being pre-recorded on the optical portion of the disc.