James H Osborn

40991253, Jul 4, 1978

Jun 23, 1976

5/699020

Robert McKay Bennett - West Dundee IL
James Leslie Osborn - Arlington Heights IL

Motorola, Inc. - Schaumburg IL

H04B 126
H03B 306

325419

A circuit for correcting frequency errors in an incoming signal that includes a particular frequency signal. The circuit includes dual phase locked loop circuitry for providing a frequency feedback control, detecting circuitry for detecting the presence of the particular coded signal and generating a hold signal, and a sample and hold circuitry disposed in the feedback path of the phase locked loop circuitry and responsive to the hold signal for setting the feedback control at a particular value to provide an optimal frequency error correction for the particular frequency signal and for holding the feedback control at the particular value for the entire spectrum of the incoming signal, whereby the frequency feedback control set for the particular frequency tone is used for the entire spectrum of the incoming signal to minimize the error in the output frequencies of the circuit.

41538781, May 8, 1979

May 2, 1977

5/792943

James L. Osborn - Arlington Heights IL

Motorola, Inc. - Schaumburg IL

H04B 110

325370

A receiver produced signal includes an information signal immediately preceded and followed by noise signals. The presence of an information signal is sensed by detector circuitry which, after an inherent delay interval, closes a squelch gate. The detector experiences an additional delay at the conclusion of an information signal. To prevent both deletion of the initial portion of the information signal and a noise "tail" following said signal, a delay line, comprised of a bucket brigade device, is series coupled between the receiver and the squelch gate. The delay provided by the delay line is approximately equal to the inherent delay time of the detector means.

42558140, Mar 10, 1981

Jun 11, 1979

6/047508

James L. Osborn - Arlington Heights IL

Motorola, Inc. - Schaumburg IL

H04B 100

455 51

A system of the type wherein transmissions of the same information are simultaneously broadcast by spatially removed transmitter sites. A control center establishes transmission links to the transmitter sites. The center includes electronic storage which supplies the required time delay for each signal applied over a predetermined link to assure phase coherency of overlapping transmissions. Upon the establishment of a new link, a new set of time delays is recalled from memory and used to program a bucket brigade to thereby provide the required delay to signals carried over the link.