1
Kenneth P Weiss, Mario F DeRango, Daniel R Schroeder, Leslie D Mutz, Brian W Lacy, Mark D Chapman: Transceiver self-diagnostic testing apparatus and method. Motorola, Darleen J Stockley, August 9, 1994: US05337316 (50 worldwide citation)

The present invention includes an apparatus and a method for transceiver self-diagnostic testing in a communication system. A feedback unit (228, 326) is utilized that allows performance of a loopback test independent of a transmit frequency to receive frequency difference without undue proliferatio ...


2
Leslie D Mutz: Phase locked loop frequency synthesizer with DC data modulation capability. Motorola, Donald B Southard, Anthony J Sarli, Steven G Parmelee, July 14, 1992: US05130676 (24 worldwide citation)

A phase locked loop frequency synthesizer with DC data modulation capability is described. This synthesizer includes an arrangement for detecting one of a plurality of FSK data levels (61), generating a corresponding predetermined compensation signal (71) and utilizing the compensation signal to sub ...


3
Peter Nanni, Bradley M Hiben, Leslie D Mutz: Method and apparatus for digital modulation using concurrent pulse addition and subtraction. Motorola, R Louis Breeden, Thomas G Berry, Daniel R Collopy, February 22, 1994: US05289141 (6 worldwide citation)

A method and apparatus for generating an output signal (616) having a pre-determined frequency shift relative to the frequency of a reference signal from a reference frequency generator (202) comprise a digital phase-locked loop (206) coupled to the reference signal for generating the output signal ...


4
Peter Nanni, Bradley M Hiben, Leslie D Mutz: Method and apparatus for digital modulation using concurrent pulse addition and subtraction. Motorola, LU LIYING, May 11, 1994: CN93118938

A method and apparatus for generating an output signal (616) having a pre-determined frequency shift relative to the frequency of a reference signal from a reference frequency generator (202) comprise a digital phase-locked loop (206) coupled to the reference signal for generating the output signal ...



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