P

Inventor

IRWIN JAMES S

US30 patents
⚠️ This page may combine multiple inventors who share the name “IRWIN JAMES S”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MOTOROLA INC

22 patents
US5323157AJun 21, 1994

Sigma-delta digital-to-analog converter with reduced noise

MOTOROLA INC247 citations98
US5357252AOct 18, 1994

Sigma-delta modulator with improved tone rejection and method therefor

MOTOROLA INC61 citations96
US4952889AAug 28, 1990

Loop filter modulated synthesizer

MOTOROLA INC59 citations95
US5504751AApr 2, 1996

Method and apparatus for extracting digital information from an asynchronous data stream

MOTOROLA INC50 citations92
US5057840AOct 15, 1991

Σ-Δmodulator for digital-to-analog converter

MOTOROLA INC28 citations92
US5030952AJul 9, 1991

Sigma-delta type analog to digital converter with trimmed output and feedback

MOTOROLA INC34 citations92
US4959624ASep 25, 1990

Coil-less overtone crystal oscillator

MOTOROLA INC46 citations92
US4862516AAug 29, 1989

System for automatically tuning the antenna of a miniature portable communications device

MOTOROLA INC55 citations92
US4817196AMar 28, 1989

Apparatus for tuning the antenna of a miniature personal communications device

MOTOROLA INC40 citations92
US4559505ADec 17, 1985

Frequency synthesizer with improved priority channel switching

MOTOROLA INC30 citations92
US5095287AMar 10, 1992

Phase locked loop having a charge pump with reset

MOTOROLA INC33 citations91
US3946397AMar 23, 1976

Inductor or antenna arrangement with integral series resonating capacitors

MOTOROLA INC29 citations82
US5999017ADec 7, 1999

CMOS implemented output buffer circuit for providing ECL level signals

MOTOROLA INC12 citations74
US4935707AJun 19, 1990

Current reduction of a synthesizer

MOTOROLA INC12 citations74
US6700451B1Mar 2, 2004

Cross coupled cascode voltage controlled oscillator

MOTOROLA INC9 citations73
US4785263ANov 15, 1988

FET oscillator circuit

MOTOROLA INC8 citations73
US5339079AAug 16, 1994

Digital-to-analog converter with a flexible data interface

MOTOROLA INC18 citations72
US5231395AJul 27, 1993

Sigma-delta digital-to-analog converter with reduced distortion

MOTOROLA INC15 citations72
US5220326AJun 15, 1993

Digital-to-analog converter with improved performance and method therefor

MOTOROLA INC16 citations72
US5339278AAug 16, 1994

Method and apparatus for standby recovery in a phase locked loop

MOTOROLA INC11 citations71
US5122799AJun 16, 1992

Multi-modulator digital-to-analog converter

MOTOROLA INC5 citations62
US4785264ANov 15, 1988

Dual FET oscillator

MOTOROLA INC3 citations62

UNISYS CORP

4 patents

MAGNECO METREL INC

4 patents