James R. Holzgrafe

Person

Sunnyvale, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Scrambling and descrambling a high definition TV signal
- Patent number 7,274,790
- Issue date Sep 25, 2007
- Macrovision Corporation
- John O. Ryan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for carrying data in a video signal so that th...
- Patent number 6,950,520
- Issue date Sep 27, 2005
- Macrovision Corporation
- John O. Ryan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Generational copy control of a video signal
- Patent number 6,701,062
- Issue date Mar 2, 2004
- Macrovision Corporation
- Johan Cornelis Talstra
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and apparatus for video tag signal recovery using various te...
- Patent number 6,594,441
- Issue date Jul 15, 2003
- Macrovision Corporation
- James R. Holzgrafe
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for scrambling a high definition television si...
- Patent number 6,542,609
- Issue date Apr 1, 2003
- Macrovision Corporation
- John O. Ryan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for copy-once watermark for video recording
- Patent number 6,374,036
- Issue date Apr 16, 2002
- Macrovsion Corporation
- John O. Ryan
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and apparatus for scrambling and descrambling of video signa...
- Patent number 5,844,988
- Issue date Dec 1, 1998
- Macrovision Corporation
- John O. Ryan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for scrambling and descrambling of video signa...
- Patent number 5,841,863
- Issue date Nov 24, 1998
- Macrovision Corporation
- John O. Ryan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for scrambling and descrambling of video signa...
- Patent number 5,608,799
- Issue date Mar 4, 1997
- Macrovision Corporation
- John O. Ryan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for scrambling and descrambling of video signa...
- Patent number 5,581,307
- Issue date Dec 3, 1996
- John O. Ryan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for vertically scrambling and descrambling of...
- Patent number 5,579,390
- Issue date Nov 26, 1996
- Macrovision Corporation
- John O. Ryan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for scrambling and descrambling
- Patent number 5,504,815
- Issue date Apr 2, 1996
- Macrovision Corporation
- John O. Ryan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for scrambling and descrambling of video signa...
- Patent number 5,438,620
- Issue date Aug 1, 1995
- Macrovision Corporation
- John O. Ryan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Rotation-free electrical focussing circuit for television image tubes
- Patent number 4,459,614
- Issue date Jul 10, 1984
- Ampex Corporation
- James R. Holzgrafe
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Analog geometry corrector for television camera image tubes
- Patent number 4,337,419
- Issue date Jun 29, 1982
- Ampex Corporation
- James R. Holzgrafe
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Efficient multichannel automatic setup and remote control system
- Patent number 4,310,855
- Issue date Jan 12, 1982
- Ampex Corporation
- James R. Holzgrafe
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus and method for registration and shading of color televisi...
- Patent number 4,309,723
- Issue date Jan 5, 1982
- Ampex Corporation
- John O. Ryan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Scrambling and descrambling a high definition TV signal
- Publication number 20040047469
- Publication date Mar 11, 2004
- John O. Ryan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

James R. Holzgrafe

Person

Patents Grantslast 30 patents

Scrambling and descrambling a high definition TV signal

Method and apparatus for carrying data in a video signal so that th...

Generational copy control of a video signal

Method and apparatus for video tag signal recovery using various te...

Method and apparatus for scrambling a high definition television si...

Method and apparatus for copy-once watermark for video recording

Method and apparatus for scrambling and descrambling of video signa...

Method and apparatus for scrambling and descrambling of video signa...

Method and apparatus for scrambling and descrambling of video signa...

Method and apparatus for scrambling and descrambling of video signa...

Method and apparatus for vertically scrambling and descrambling of...

Method and apparatus for scrambling and descrambling

Method and apparatus for scrambling and descrambling of video signa...

Rotation-free electrical focussing circuit for television image tubes

Analog geometry corrector for television camera image tubes

Efficient multichannel automatic setup and remote control system

Apparatus and method for registration and shading of color televisi...

Patents Applicationslast 30 patents

Scrambling and descrambling a high definition TV signal