Inventor

HOLZGRAFE JAMES R

US15 patents

⚠️ This page may combine multiple inventors who share the name “HOLZGRAFE JAMES R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MACROVISION CORP

11 patents

US5844988ADec 1, 1998

Method and apparatus for scrambling and descrambling of video signal with edge fill

MACROVISION CORP28 citations96

US5504815AApr 2, 1996

Method and apparatus for scrambling and descrambling

MACROVISION CORP36 citations96

US6950520B1Sep 27, 2005

Method and apparatus for carrying data in a video signal so that the data is not recorded

MACROVISION CORP22 citations92

US6542609B1Apr 1, 2003

Method and apparatus for scrambling a high definition television signal

MACROVISION CORP33 citations92

US5841863ANov 24, 1998

Method and apparatus for scrambling and descrambling of video signals with edge fill

MACROVISION CORP18 citations92

US5608799AMar 4, 1997

Method and apparatus for scrambling and descrambling of video signal with edge fill

MACROVISION CORP24 citations92

US5438620AAug 1, 1995

Method and apparatus for scrambling and descrambling of video signal with edge fill

MACROVISION CORP21 citations92

US5579390ANov 26, 1996

Method and apparatus for vertically scrambling and descrambling of video signals

MACROVISION CORP17 citations82

US5581307ADec 3, 1996

Method and apparatus for scrambling and descrambling of video signals with edge fill

MACROVISION CORP3 citations74

US6594441B1Jul 15, 2003

Method and apparatus for video tag signal recovery using various techniques to regenerate and re-record the tag signal

MACROVISION CORP8 citations73

US7274790B2Sep 25, 2007

Scrambling and descrambling a high definition TV signal

MACROVISION CORP2 citations62

AMPEX

4 patents

US4459614AJul 10, 1984

HOLZGRAFE JAMES R

MACROVISION CORP

Method and apparatus for scrambling and descrambling of video signal with edge fill

Method and apparatus for scrambling and descrambling

Method and apparatus for carrying data in a video signal so that the data is not recorded

Method and apparatus for scrambling a high definition television signal

Method and apparatus for scrambling and descrambling of video signals with edge fill

Method and apparatus for scrambling and descrambling of video signal with edge fill

Method and apparatus for scrambling and descrambling of video signal with edge fill

Method and apparatus for vertically scrambling and descrambling of video signals

Method and apparatus for scrambling and descrambling of video signals with edge fill

Method and apparatus for video tag signal recovery using various techniques to regenerate and re-record the tag signal

Scrambling and descrambling a high definition TV signal

AMPEX

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 television cameras