TV/COM TECHNOLOGIES, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H04N PICTORIAL COMMUNICATION, e.g. TELEVISION 1241

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5113440 Universal decoderMay 15, 91May 12, 92[H04N]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5133440 Rotary stop mechanism with track actuation of a stop pinExpiredMay 02, 90Jul 28, 92[F16D]
4709266 Satellite scrambling communication network using geographically separated uplinksExpiredJan 14, 85Nov 24, 87[H04N]
4688247 Pay TV scrambling by audio encryptionExpiredJun 05, 86Aug 18, 87[H04N]
4652924 RF volume control circuitExpiredDec 10, 84Mar 24, 87[H04N]
4633309 Cable television master/slave decoder controlExpiredMay 06, 85Dec 30, 86[H04N]
4591915 Remote volume control by means of frequency modulation feedback loopExpiredApr 18, 84May 27, 86[H04N, H04B]
4571622 Hybrid frequency modulation feedback loop remote volume control circuitExpiredMay 25, 84Feb 18, 86[H04N]
4568974 Video scrambling by the application of a variable periodic scrambling waveformExpiredOct 28, 82Feb 04, 86[H04N, H04K]
4531020 Multi-layer encryption system for the broadcast of encrypted informationExpiredJul 23, 82Jul 23, 85[H04K]
4531021 Two level encripting of RF signalsExpiredAug 13, 84Jul 23, 85[H04K]
4454543 Dynamic video scramblingExpiredNov 06, 81Jun 12, 84[H04N]
4447828 Phase change dynamic scramblingExpiredFeb 25, 82May 08, 84[H04N, H04K]
4425579 Catv converter with keylock to favorite channelsExpiredMay 22, 81Jan 10, 84[H04N]
4424532 Coding and decoding system for video and audio signalsExpiredMay 09, 83Jan 03, 84[H04N]
4353088 Coding and decoding system for video and audio signalsExpiredMay 14, 80Oct 05, 82[H04N, H04K]
4340906 Video signal coding by video signal polarity reversal on the basis of brightness level comparisonExpiredMay 14, 80Jul 20, 82[H04N]
4336553 Method of coding audio and video signalsExpiredMay 14, 80Jun 22, 82[H04N]
4323922 Television coding system with channel level identificationExpiredDec 17, 79Apr 06, 82[H04N]
4313132 Cable TV security meansExpiredOct 31, 79Jan 26, 82[H04N, H04H]

Top Inventors for This Owner

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