Inventor

DAVIS WALTER L

US75 patents

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

DAVIS WALTER L

MOTOROLA INC

Method of and apparatus for acknowledging and answering a paging signal

Telephone answering machine in paging systems with automatic number identification based message operations

Synthesized clock microcomputer with power saving

Nationwide display pager with location readout

Selective call signaling system with combined wide area paging and high data rate transmissions via radio telephone transceivers

Power conservation method and apparatus for a portion of a predetermined signal

Expanded microcomputer system for controlling radio frequency interference

Battery saving method and apparatus for providing selective receiver power switching

Global satellite communication system with geographic protocol conversion

Battery saving method and apparatus for providing selective receiver power switching

Detecting out of range in response to a loss of signal and a history of approaching out of range prior to the loss of signal

Satellite signaling system having a signal beam with a variable beam area

Global satellite communication system with geographic protocol conversion

Frequency synthesizer with an interface controller and buffer memory

Pager having time controlled functions

Low voltage and low power frequency synthesizer

Method of reprogramming an alert pattern

Control interface for combined watch and pager functions

Reduced power consumption low battery alert device

DC to DC converter

Universal paging device with power conservation

Paging receiver with LPC speech synthesizer

Self biasing direct coupled data limiter

Dual mode DC/DC converter

Paging receiver having selectively protected regions of memory

Paging system using LPC speech encoding with an adaptive bit rate

Apparatus for controlling utilization of software added to a portable communication device

Satellite signalling system

Radio communication receiver with apparatus for altering bit rate of the receiver

Global communication system receiver and method for operating the same

Paging receiver with automatic frequency control

Synthesized selective call receiver having variable characteristics

Self-tuning direct coupled data limiter of a battery saver type paging receiver

Heterodyne stage having precise closed-loop control of the amplitude of the injection signal thereof

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

Method and apparatus for modification of vehicular navigation information

Hybrid analog-digital phase error detector

Programmable multi-address pager receiver and method of characterizing same

Prioritization of stored messages in a digital voice paging receiver

System for off-the-air reprogramming of communication receivers

Filter capacitor discharge circuit for a DC-DC converter

Method and apparatus for facilitating wireless communications with a nonautomotive roaming object

Method and apparatus for facilitating two-way communications between vehicles

Bit synchronizer

Paging system using LPC speech encoding with an adaptive bit rate

Turn off protection circuit

KEY TECHNOLOGY INC

High-speed vibratory alignment and singulation conveyor

Inspection and cutting apparatus

Optical inspection apparatus for moving articles

Gear coupled, counter-rotating vibratory drive assembly