Inventor
DEN TOONDER PIETER
NL9 patents
⚠️ This page may combine multiple inventors who share the name “DEN TOONDER PIETER”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
OAK INDUSTRIES INC
7 patentsUS4323922AApr 6, 1982
Television coding system with channel level identification
OAK INDUSTRIES INC151 citations95
US4353088AOct 5, 1982
Coding and decoding system for video and audio signals
OAK INDUSTRIES INC128 citations94
US4340906AJul 20, 1982
Video signal coding by video signal polarity reversal on the basis of brightness level comparison
OAK INDUSTRIES INC123 citations93
US4424532AJan 3, 1984
Coding and decoding system for video and audio signals
OAK INDUSTRIES INC135 citations89
US4135157AJan 16, 1979
Pole mounted converter
OAK INDUSTRIES INC26 citations81
US4447828AMay 8, 1984
Phase change dynamic scrambling
OAK INDUSTRIES INC9 citations73
US4568974AFeb 4, 1986
Video scrambling by the application of a variable periodic scrambling waveform
OAK INDUSTRIES INC12 citations71