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PICTURETEL CORP

Overview
  • Total Patents
    107
About

PICTURETEL CORP has a total of 107 patent applications. Its first patent ever was published in 1985. It filed its patents most often in United States, WIPO (World Intellectual Property Organization) and Canada. Its main competitors in its focus markets audio-visual technology, computer technology and telecommunications are CUTLER ROSS G, BIAMP SYSTEMS CORP and NEUMEIER ZEEV.

Patent filings per year

Chart showing PICTURETEL CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Chu Peter L 22
#2 Yuan Xiancheng 12
#3 Clapp Craig S K 10
#4 Bernstein Jeffrey G 10
#5 Botzko Stephen C 9
#6 Howell Brian A 8
#7 Bernstein Jeffrey 8
#8 Girod Bernd 8
#9 Ericsson S Staffan 7
#10 Duys Anthony M 6

Latest patents

Publication Filing date Title
JP2002112217A Multimedia connection hub for video conferencing system
GB0422172D0 Video coding using multiple buffers
GB0414849D0 Media role management in a video conferencing network
US6911987B1 Method and system for transmitting data for a shared application
GB9916394D0 Method and apparatus for indexing conference content
US6357028B1 Error correction and concealment during data transmission
US6240140B1 Channel aggregation having low latency and overhead
US6285661B1 Low delay real time digital video mixing for multipoint video conferencing
WO9832070A1 Pseudo-random number generator exploiting processors having instruction-level parallelism and the use thereof for encryption
US6141597A Audio processor
US5943248A w-bit non-linear combiner for pseudo-random number generation
US5987131A Cryptographic key exchange using pre-computation
US5924064A Variable length coding using a plurality of region bit allocation patterns
US5778082A Method and apparatus for localization of an acoustic source
US5715319A Method and apparatus for steerable and endfire superdirective microphone arrays with reduced analog-to-digital converter and computational requirements
US5805739A Lapped orthogonal vector quantization
WO9607177A1 Apparatus and method for detecting speech in the presence of other sounds
WO9605701A1 Spatially adaptive blur filter
US5664057A Fixed bit rate speech encoder/decoder
US5633681A Electrically controlled camera positioning system