Inventor
BORTH DAVID E
US27 patents
Patents
27 patentsUS4852090AJul 25, 1989
TDMA communications system with adaptive equalization
MOTOROLA INC228 citations99
US4737976AApr 12, 1988
Hands-free control system for a radiotelephone
MOTOROLA INC203 citations99
US4630304ADec 16, 1986
Automatic background noise estimator for a noise suppression system
MOTOROLA INC313 citations99
US4628529ADec 9, 1986
Noise suppression system
MOTOROLA INC281 citations99
US5737327AApr 7, 1998
Method and apparatus for demodulation and power control bit detection in a spread spectrum communication system
MOTOROLA INC170 citations98
US5271042ADec 14, 1993
Soft decision decoding with channel equalization
MOTOROLA INC129 citations98
US4630305ADec 16, 1986
Automatic gain selector for a noise suppression system
MOTOROLA INC390 citations98
US5381443AJan 10, 1995
Method and apparatus for frequency hopping a signalling channel in a communication system
MOTOROLA INC132 citations97
US5233632AAug 3, 1993
Communication system receiver apparatus and method for fast carrier acquisition
MOTOROLA INC77 citations96
US5142551AAug 25, 1992
Signal weighting system for digital receiver
MOTOROLA INC96 citations96
US5121412AJun 9, 1992
All-digital quadrature modulator
MOTOROLA INC104 citations96
US4775851AOct 4, 1988
Multiplierless decimating low-pass filter for a noise-shaping A/D converter
MOTOROLA INC58 citations96
US5574973ANov 12, 1996
Method of registering/-reassigning a call in a dual mode communication network
MOTOROLA INC98 citations95
US5379324AJan 3, 1995
System and method for calculating channel gain and noise variance of a communication channel
MOTOROLA INC58 citations95
US5214675AMay 25, 1993
System and method for calculating channel gain and noise variance of a communication channel
MOTOROLA INC57 citations95
US4829543AMay 9, 1989
Phase-coherent TDMA quadrature receiver for multipath fading channels
MOTOROLA INC115 citations95
US5301364AApr 5, 1994
Method and apparatus for digital automatic gain control in a receiver
MOTOROLA INC92 citations93
US5144644ASep 1, 1992
Soft trellis decoding
MOTOROLA INC45 citations92
US5133010AJul 21, 1992
Method and apparatus for synthesizing speech without voicing or pitch information
MOTOROLA INC25 citations92
US4847869AJul 11, 1989
Rapid reference acquisition and phase error compensation for radio transmission of data
MOTOROLA INC45 citations92
US5392300AFeb 21, 1995
Dual mode radio communication unit
MOTOROLA INC43 citations91
US4887050ADec 12, 1989
Frequency control apparatus and method for a digital radio receiver
MOTOROLA INC44 citations91
US4873683AOct 10, 1989
TDMA radio system employing BPSK synchronization for QPSK signals subject to random phase variation and multipath fading
MOTOROLA INC41 citations91
US5276685AJan 4, 1994
Digital automatic gain control
MOTOROLA INC49 citations90
US5263052ANov 16, 1993
Viterbi equalizer for radio receiver
MOTOROLA INC18 citations74
US4910470AMar 20, 1990
Digital automatic frequency control of pure sine waves
MOTOROLA INC11 citations71
US4723288AFeb 2, 1988
Stereo decoding by direct time sampling
MOTOROLA INC8 citations71