CRYSTAL SEMICONDUCTOR CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 6441
 
  
 
H04B TRANSMISSION 6204
 
  
 
G10L SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION 394
 
  
 
H03G CONTROL OF AMPLIFICATION 250
 
  
 
H03M CODING, DECODING OR CODE CONVERSION, IN GENERAL 2109
 
  
 
H04M TELEPHONIC COMMUNICATION 2161
 
  
 
H04N PICTORIAL COMMUNICATION, e.g. TELEVISION 2240
 
  
 
G05F SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES 199
 
  
 
G10H ELECTROPHONIC MUSICAL INSTRUMENTS 130
 
  
 
G11B INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER 1137

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6952621 Single-chip audio circuits, methods, and systems using the sameNov 20, 00Oct 04, 05[H04B, G06F]
6560451 Square wave analog multiplierOct 15, 99May 06, 03[H03B, H04B]
6434110 Full-duplex speakerphone circuit including a double-talk detectorMar 20, 98Aug 13, 02[H04J]
6373954 Single-chip audio circuitry, method, and systems using the sameOct 14, 97Apr 16, 02[H04B]
6356872 Method and apparatus for storing digital audio and playback thereofSep 25, 96Mar 12, 02[G10L]
6282176 Full-duplex speakerphone circuit including a supplementary echo suppressorMar 20, 98Aug 28, 01[H04B]
6259957 Circuits and methods for implementing audio Codecs and systems using the sameApr 04, 97Jul 10, 01[H04B, G06F]
6212273 Full-duplex speakerphone circuit including a control interfaceMar 20, 98Apr 03, 01[H04M, H04B]
6121811 Variable time delay circuit and methodSep 17, 97Sep 19, 00[H03K]
6101598 Methods for debugging a multiprocessor systemNov 14, 97Aug 08, 00[G06F]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6311201 Efficient low pass filter stage for a decimation filterExpiredSep 29, 95Oct 30, 01[G06F]

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