Richard Westerfer

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Norristown, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Insertion of supplemental burst into video signals to thwart piracy...
- Patent number 5,651,065
- Issue date Jul 22, 1997
- General Instrument Corporation of Delaware
- Alfred W. Stufflet
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for frustrating vertical interval detection in...
- Patent number 5,287,409
- Issue date Feb 15, 1994
- General Instrument Corporation
- Richard Westerfer
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for enhancing the security of a scrambled tele...
- Patent number 5,146,496
- Issue date Sep 8, 1992
- General Instrument Corporation
- Richard Westerfer
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Security arrangement for downloadable cable television converters
- Patent number 4,712,239
- Issue date Dec 8, 1987
- General Instrument Corporation
- William Frezza
- H04 - ELECTRIC COMMUNICATION TECHNIQUE