Motorola Corporation

George W Meyer, Jr

Allen Wong

Timothy M Burke

John P Murzanski

Thomas F Vondrak

David L Bond

John H Spears

Russell Lansai

John A Moore

A cellular speakerphone (100) includes a housing (101) containing a transceiver circuit (203), a processor and switching circuit (205), a coupler (209), and a hands-free user interface (207). The processor and switching circuit (205) and the hands-free user interface (207) operate the cellular speakerphone (100) in a default hands-free mode that is automatically interruptable to permit the cellular speakerphone (100) to operate in a handset mode when an optional handset (127) is operably coupled to the cellular speakerphone (100) via the coupler (209).

Cellular speakerphone and method of operation thereof

Top-housing for a telephone handset

Telephone handset panel

Digital method and apparatus for generation of a digital data stream with the bit transitions shaped to reduce splatter, and minimize droop and overshoot in a radio communications system utilizing digital coded squelch. A codeword digital data stream, in digitized form, is shaped so that the bit transitions have the form of a portion of a sine waveform and then is applied to a D/A converter. A simple filter follows the D/A converter to attenuate sampling noise.

Method and apparatus for digital shaping of a digital data stream

Growing community of inventors

Buffalo Grove, IL, United States of America

George W Meyer, Jr