Qualcomm Incorporated

Northrop Grumman Corpoation

David L Harding

Anthony James Cowan

Bruce A Denton

Timothy L Boolos

Tara E Owens

A method and apparatus for providing an interface between a communications device and a medium carrying an approximately periodic waveform are presented. The method includes providing a first signal in response to detecting a predetermined characteristic of the approximately periodic waveform using switching circuitry that draws a first amount of power drawn from the medium, and in response to the first signal, detecting the predetermined characteristic of the approximately periodic waveform using detecting circuitry that draws a second amount of power drawn from the medium, where the detecting circuitry detects the predetermined characteristic with greater accuracy in time than the switching circuitry detects the predetermined characteristic, and the second amount of power drawn from the medium is greater than the first amount of power.

Detection of a characteristic of a periodic waveform

The invention is a data transmission medium and a method of data transmission. A data transmission system in accordance with the invention includes a plurality of modems; a transmission medium coupled to each of the modems with data transmissions between the modems being transmitted by the transmission medium with a data transmission protocol; a plurality of processors which use a common processor data protocol, each processor being coupled to one of the modems; a plurality of devices, each device receiving and/or transmitting data transmissions with a device data protocol and being coupled to a processor; and a plurality of digital devices, coupled to the transmission medium, which perform at least one of transmitting digital data to the transmission medium for transmission by the transmission medium to another digital device and receiving digital data from another digital device transmitted by the transmission medium.

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Inglis, FL, United States of America

David L Harding