Inventor
William L. Betts
Inventor
St. Petersburg, FL, US
Overview
Patents· 135 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Lprimary
H04LTransmission of digital information, e.g. telegraphic communication54%
H04BTransmission8%
H04MTelephonic communication8%
H03MCoding7%
H04JMultiplex communication6%
H03HImpedance networks, e.g. resonant circuits2%
H04QSelecting2%
H03LAutomatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses2%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds1%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients1%
PatentTitleYear
8,390,445'Sensory enhancement systems and methods in personal electronic devices'20138,279,969'System and method for adapting a change in constellation density while receiving a signal'20128,176,403'Distributed block coding (DBC)'20128,151,174'Block modulus coding (BMC) systems and methods for block coding with non-binary modulus'20128,069,388'Distributed block coding (DBC)'20117,958,426'Distributed block coding (DBC)'20117,872,574'Sensory enhancement systems and methods in personal electronic devices'20117,835,459'System and method for adapting to a change in constellation density while receiving a signal'20107,747,000'Subscriber line driver with equalizer'20107,733,966'System and method for space diversified linear block interleaving'20107,711,109'System and method for subliminal time domain duplexing'20107,684,444'Communication system and method for minimum burst duration'20107,634,036'System and method for deriving symbol timing'20097,522,679'System and method for adapting to a change in constellation density while receiving a signal'20097,471,777'Indirect DSL over loaded and unloaded loops'20087,418,048'Tone ordered discrete multitone interleaver'20087,289,610'Digital subscriber line service over loaded loops'20077,251,270'Systems and methods for fractional bit rate encoding in a communication system'20077,248,662'System and method for deriving symbol timing'20077,194,048'Space diversity trellis interleaver system and method'20077,155,016'Communication device and method for using non-self-synchronizing scrambling in a communication system'20067,149,268'Digital subscriber line driver'20067,099,401'Discrete multitone interleaver'20067,088,781'Tone ordered discrete multitone interleaver'20067,072,387'Fractional bit rate encoding in a discrete multi-tone communication system'20067,054,377'Space diversity trellis interleaver system and method'20067,055,088'Interleaved generalized convolutional encoder'20067,046,798'System and method for subliminal time domain duplexing'20067,031,381'Method and apparatus for reducing transmission errors caused by periodic transients in digital subscriber line (DSL) communication systems'20067,013,421'Trellis interleaver and feedback precoder'20066,993,067'Fractional bit rate encoding in a pulse amplitude modulation communication system'20066,975,694'Digital subscriber line driver'20056,891,896'Embedded signal constellations'20056,853,695'System and method for deriving symbol timing'20056,823,002'Linear block interleaver for discrete multi-tone modulation'20046,782,096'Subscriber line driver and termination'20046,744,813'System and method for estimating noise characteristics in the presence of non-stationary noise'20046,715,124'Trellis interleaver and feedback precoder'20046,668,023'Linear block interleaver system and method'20036,584,078'Asymmetric modem communications system and method'20036,486,259'Ebonite tape'20026,487,244'System and method for transmitting special marker symbol'20026,482,894'Quick set ebonite composition'20026,421,320'Asymmetric modem communications system and method'20026,414,964'Method and apparatus for performing a multipoint polling protocol which employs silence intervals for controlling circuit operation'20026,366,565'Asymmetric modem communications system and method'20026,307,893'System and method for transmit signal spectral shaping'20016,236,675'Pilot tone system and method to allow continuous synchronization in multipoint networks'20016,157,680'Audio distortion canceler method and apparatus'20006,137,809'Quantization noise compensator apparatus and method'20006,137,829'System and method for transmitting special marker symbols'20006,101,223'System and method for optimizing the uncoded modulation of circular constellations using circular precoding and nonlinear encoding'20006,072,825'Noncooperative feedback system and method for a compensation system associated with transmitter or codec'20006,026,120'System and method for using circular constellations with uncoded modulation'20006,014,371'Echo cancellation system and method for multipoint networks'20006,011,814'Adaptive comb filter and decision feedback equalizer for noise suppression'20005,995,558'Rob bit compensation system and method associated with a receiver or codec'19995,991,278'Asymmetric modem communications system and method'19995,982,826'Synchronous clock regeneration system for generating a clock waveform at a specified frequency'19995,930,300'Cooperative feedback system and method for a compensation system associated with a transmitter or codec'19995,907,296'Rob bit compensation system and method associated with a transmitter or codec'19995,878,077'Apparatus for high-speed simultaneous voice/data communications'19995,859,877'Simultaneous analog and digital communication using fractional rate encoding'19995,844,944'Simultaneous analog and digital communication using partitioning of bits into words'19985,828,657'Half-duplex echo canceler training using a pilot signal'19985,825,753'Echo canceler gain tracker for cellular modems'19985,812,537'Echo canceling method and apparatus for data over cellular'19985,812,075'Combined DAQ/RBS compensation system and method for enhancing the accuracy of digital data communicated through a network'19985,784,405'Noncooperative feedback system and method for a compensation system associated with a transmitter or CODEC'19985,768,311'Interpolation system for fixed sample rate signal processing'19985,761,247'Rob bit compensation system and method associated with a receiver or codec'19985,754,594'Cooperative feedback system and method for a compensation system associated with a transmitter or codec'19985,729,226'Rob bit compensation system and method associated with a transmitter or CODEC'19985,684,834'Simultaneous analog and digital communication using fractional rate encoding'19975,682,378'Echo cancellation for modems'19975,680,451'Listener echo cancellation for modems'19975,659,581'Modem receiver pre-emphasis'19975,559,835'Method and apparatus for encoding data for transfer over a communication channel'19965,521,942'Method for increasing the dynamic range of a signal in a simultaneous voice and data system by the use of overlapping signal point regions and trellis coding'19965,481,567'Method and apparatus for automatically adapting the amount of warping in a system transmitting information through a non-linear channel'19965,475,711'System for channel capacity modulation'19955,444,712'Communication mode identification technique'19955,396,519'Method and apparatus for adaptively providing precoding and preemphasis conditioning to signal data for transfer over a communication channel'19955,343,500'Non-linear encoder and decoder for information transmission through non-linear channels'19945,311,557'Circular limiter for use in a receiver to reduce the effects of signal distortion'19945,291,521'Index assignment in redundancy-coded data communication systems'19945,280,503'Data communication system with data rate throttling'19945,265,127'Non-linear encoder and decoder for information transmission through non-linear channels'19935,243,627'Signal point interleaving technique'19935,230,010'Fractional rate modulation'19935,206,854'Detecting loss of echo cancellation'19935,105,443'Inband coding of secondary data'19925,103,227'Modulus converter for fractional rate encoding'19925,099,478'Communication of secondary channel byte in a synchronous modem without statistical uncertainty'19925,008,903'Adaptive transmit pre-emphasis for digital modem computed from noise spectrum'19914,979,184'Automatic equalizer initialization time control for multipoint networks'19904,939,748'Unobtrusive signature for modulated signals'19904,924,516'Method and system for a synchronized pseudo-random privacy modem'19904,862,464'Data error detector for digital modems using trellis coding'19894,833,690'Remote eye pattern display for digital modems'19894,811,357'Secondary channel for digital modems using spread spectrum subliminal induced modulation'19894,796,279'Subrate preamble decoder for a high speed modem'19894,771,232'Non-interruptive spectrum analyzer for digital modems'19884,752,943'Frequency of occurrence retraining decision circuit'19884,744,092'Transparent error detection in half duplex modems'19884,734,920'High speed modem for multiple communication circuits'19884,683,578'Automatic gain control using the extreme points of a constellation'19874,677,625'Distributed trellis encoder'19874,677,626'Self-synchronizing interleaver for trellis encoder used in wireline modems'19874,677,624'Self-synchronizing de-interleaver for viterbi decoder used in wireline modems'19874,669,090'Half-duplex modem without turnaround delay'19874,639,934'Line impairment display for digital modems'19874,637,035'Digital modem for multiple telephone circuits'19874,633,485'Adaptive noise suppression for digital modems'19864,631,738'Gain tracker for digital modem'19864,630,286'Device for synchronization of multiple telephone circuits'19864,612,509'Frequency shift keyed demodulator'19864,555,790'Digital modem having a monitor for signal-to-noise ratio'19854,534,036'Phase tracking loop impairment monitor for modems'19854,534,026'Normalized error compensator for modems using radial amplitude modulation for multiplexing'19854,532,640'Phase tracking loop for digital modem'19854,525,846'Modem in-band secondary channel via radial modulation'19854,517,680'Error vector normalizer'19854,509,171'Modem multiplexer synchronization by radial modulation'19854,390,843'Telephone system ring period detector'19834,335,464'Dual multipoint data transmission system modem'19824,229,814'Multiplex conference bridge'19804,225,956'Multiplex conference bridge'19804,128,832'Combined encoder/decoder'19784,125,900'Cascaded recursive digital filter'19784,101,964'Digital filter for pulse code modulation signals'19784,059,735'Digital conference system'19774,037,226'Pulse code modulation compressor'19774,021,616'Interpolating rate multiplier'19773,947,634'System for synchronizing local pseudo-noise sequence to a received baseband signal'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1978Patents assigned to NCR CO (6)· patent assignee history
1976–2013Based in St. Petersburg, FL, US· patent location history
1980–1989Based in Madeira Beach, FL, US· patent location history
1980–1985Based in Maderia Beach, FL, US· patent location history
1982–2012Patents assigned to PARADYNE CORP (86)· patent assignee history
1992–1994Patents assigned to AT & T BELL LAB (9)· patent assignee history
1995–1996Patents assigned to AT & T CORP (5)· patent assignee history
1999–2003Patents assigned to TELOGY NETWORKS INC (5)· patent assignee history
2002Based in Redwood City, CA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| PARADYNE CORP | 86 | 1982–2012 |
| AT & T BELL LAB | 9 | 1992–1994 |
| NCR CO | 6 | 1976–1978 |
| AT & T CORP | 5 | 1995–1996 |
| TELOGY NETWORKS INC | 5 | 1999–2003 |
Locations
| Location | Patents | Span |
|---|---|---|
| St. Petersburg, Florida, US | 122 | 1976–2013 |
| Madeira Beach, Florida, US | 6 | 1980–1989 |
| Maderia Beach, Florida, US | 5 | 1980–1985 |
| Redwood City, California, US | 2 | 2002 |