Inventor · disambiguated record
Thayamkulangara R. Viswanathan
Also filed as: VISWANATHAN THAYAMKULANGARA R · VISWANATHAN THAYAMKULANGARA RA
26 granted patents·1 pending application·625 citations·filing 1982–2003
97Inventor score
Files withLUCENT TECHNOLOGIES INC7TEXAS INSTRUMENTS INC6AT & T BELL LAB5AT & T CORP5AMERICAN TELEPHONE & TELEGRAPH3
Top patents by PatentIndex Score
27 records- 0199US5012245AIntegral switched capacitor FIR filter/digital-to-analog converter for sigma-delta encoded digital audioAT & T BELL LAB·Filed 1989·Granted Apr 30, 1991·150 cites·9 claims
- 0290US4849684ACMOS bandgap voltage reference apparatus and methodAMERICAN TELEPHONE & TELEGRAPH·Filed 1988·Granted Jul 18, 1989·53 cites·10 claims
- 0387US6476746B2Cellular base station having a high speed, high resolution digital-to-analog converter with off-line sigma delta conversion and storageTEXAS INSTRUMENTS INC·Filed 2000·Granted Nov 5, 2002·41 cites·6 claims
- 0486US6441761B1High speed, high resolution digital-to-analog converter with off-line sigma delta conversion and storageTEXAS INSTRUMENTS INC·Filed 2000·Granted Aug 27, 2002·37 cites·6 claims
- 0583US4484089ASwitched-capacitor conductance-control of variable transconductance elementsAT & T BELL LAB·Filed 1982·Granted Nov 20, 1984·24 cites·13 claims
- 0680US6489908B2Wireless local loop terminal and system having high speed, high resolution, digital-to-analog converter with off-line sigma-delta conversion and storageTEXAS INSTRUMENTS INC·Filed 2001·Granted Dec 3, 2002·26 cites·26 claims
- 0779US6518902B2PC card and WLAN system having high speed, high resolution, digital-to analog converter with off-line sigma delta conversion and storageTEXAS INSTRUMENTS INC·Filed 2001·Granted Feb 11, 2003·25 cites·23 claims
- 0874US5696508AComparator-offset compensating converterLUCENT TECHNOLOGIES INC·Filed 1995·Granted Dec 9, 1997·38 cites·39 claims
- 0973US5479129AVariable propagation delay digital signal inverterAT & T CORP·Filed 1993·Granted Dec 26, 1995·25 cites·23 claims
- 1072US5675341ACurrent-mode parallel analog-to-digital converterLUCENT TECHNOLOGIES INC·Filed 1995·Granted Oct 7, 1997·36 cites·28 claims
- 1171US5619203ACurrent source driven converterLUCENT TECHNOLOGIES INC·Filed 1994·Granted Apr 8, 1997·31 cites·16 claims
- 1267US6924756B2Method and system for processing a digital signalTEXAS INSTRUMENTS INC·Filed 2003·Granted Aug 2, 2005·6 cites·8 claims
- 1367US5534862AResistor string with equal resistance resistorsAT & T CORP·Filed 1995·Granted Jul 9, 1996·19 cites·28 claims
- 1462US7020219B2Wireless user terminal and system having high speed, high resolution, digital-to-analog converter with off-line sigma delta conversion and storageTEXAS INSTRUMENTS INC·Filed 2001·Granted Mar 28, 2006·8 cites·31 claims
- 1560US5731775ASubranging converter with plurality of resistor strings and transistor switchesLUCENT TECHNOLOGIES INC·Filed 1996·Granted Mar 24, 1998·22 cites·17 claims
- 1659US5572153ALow offset comparators based on current copiersAT & T CORP·Filed 1995·Granted Nov 5, 1996·17 cites·15 claims
- 1757US5016012ATechnique for compensating switched capacitor circuits having gain-setting resistorsAT & T BELL LAB·Filed 1989·Granted May 14, 1991·14 cites·9 claims
- 1852US5608401AThree-level digital-to-analog converter for low-power consumptionLUCENT TECHNOLOGIES INC·Filed 1994·Granted Mar 4, 1997·15 cites·22 claims
- 1945US5532628AFast comparator circuitAT & T CORP·Filed 1995·Granted Jul 2, 1996·9 cites·3 claims
- 2042US4577119ATrimless bandgap reference voltage generatorAT & T BELL LAB·Filed 1983·Granted Mar 18, 1986·7 cites·12 claims
- 2141US5001439AVery low distortion amplifierAT & T BELL LAB·Filed 1989·Granted Mar 19, 1991·5 cites·3 claims
- 2239US2003218065A1Apparatus and method for consolidating and using information from a plurality of credit cardsFiled 2002·Application pending·0 cites
- 2338US5717396AAnalog-to-digital converter signal storage capacitor perturbationLUCENT TECHNOLOGIES INC·Filed 1996·Granted Feb 10, 1998·7 cites·8 claims
- 2435US4818929AFully differential analog comparatorAMERICAN TELEPHONE & TELEGRAPH·Filed 1988·Granted Apr 4, 1989·3 cites·27 claims
- 2533US5489905AMerged decoding circuit for analog-to-digital flash conversionAT & T CORP·Filed 1993·Granted Feb 6, 1996·4 cites·5 claims
- 2633US4902913AAnalog comparatorAMERICAN TELEPHONE & TELEGRAPH·Filed 1988·Granted Feb 20, 1990·2 cites·17 claims
- 2730US5627496APLL and phase detection circuit thereforLUCENT TECHNOLOGIES INC·Filed 1996·Granted May 6, 1997·1 cites·15 claims
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