Inventor
William Chunhung Yip
Inventor
Scottsdale, AZ, US
Overview
Patents· 22 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Mprimary
H04MTelephonic communication21%
G10LSpeech analysis techniques or speech synthesis18%
H04BTransmission18%
H04LTransmission of digital information, e.g. telegraphic communication9%
H04WWireless communication networks9%
G06KGraphical data reading6%
H03HImpedance networks, e.g. resonant circuits6%
H04JMultiplex communication6%
H01QAntennas, i.e. radio aerials3%
H03GControl of amplification3%
PatentTitleYear
7,142,665'Automatic gain control for an adaptive finite impulse response and method therefore'20067,065,207'Controlling attenuation during echo suppression'20066,928,409'Speech recognition using polynomial expansion and hidden markov models'20056,799,062'Full-duplex hands-free transparency circuit and method therefor'20046,707,912'Method and apparatus for setting a step size for an adaptive filter coefficient of an echo canceller'20046,658,112'Voice decoder and method for detecting channel errors using spectral energy evolution'20036,415,029'Echo canceler and double-talk detector for use in a communications unit'20026,104,726'Simultaneous transfer of voice and data information using multi-rate vocoder and bit control protocol'20006,084,967'Radio telecommunication device and method of authenticating a user with a voice authentication token'20005,926,756'Method and system for programming a cellular phone'19995,896,452'Multi-channel echo canceler and method using convolution of two training signals'19995,856,970'Multi-channel echo cancellation method and apparatus'19995,815,020'Balance differential receiver'19985,812,942'Balanced differential radio receiver and method of operation'19985,751,718'Simultaneous transfer of voice and data information using multi-rate vocoder and byte control protocol'19985,721,782'Partitioned echo canceler utilizing decimation echo location'19985,504,802'Communication system apparatus for transmitting and receiving data having a radio wireline interface'19965,357,567'Method and apparatus for volume switched gain control'19945,265,190'CELP vocoder with efficient adaptive codebook search'19935,187,745'Efficient codebook search for CELP vocoders'19935,179,594'Efficient calculation of autocorrelation coefficients for CELP vocoder adaptive codebook'19935,173,941'Reduced codebook search arrangement for CELP vocoders'1992Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1992–2004Patents assigned to MOTOROLA INC (18)· patent assignee history
1992–2000Based in Scottsdale, AZ, US· patent location history
1998–2006Based in Phoenix, AZ, US· patent location history
2003Patents assigned to GEN DYNAMICS DECISION SYSTEMS (1)· patent assignee history
2005–2006Patents assigned to FREESCALE SEMICONDUCTOR INC (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MOTOROLA INC | 18 | 1992–2004 |
| FREESCALE SEMICONDUCTOR INC | 3 | 2005–2006 |
| GEN DYNAMICS DECISION SYSTEMS | 1 | 2003 |
Locations
| Location | Patents | Span |
|---|---|---|
| Scottsdale, AZ, US | 12 | 1992–2000 |
| Phoenix, AZ, US | 10 | 1998–2006 |