05689823 is referenced by 6 patents and cites 5 patents.

A radio transceiver system (100) includes an option board interface (117) with an analog interface (119) and a digital interface (125). Option board interface (117) is used for conveying information between an optional memory board (133) and a digital processing unit (105). Option board interface (117) also controls analog audio functions through analog interface (119). Option board interface (117) enhances functional operation of the radio transceiver system (100) by allowing options to be selected which are not provided as standard radio equipment.

Title
Radio having an option board interface and an option board for use therewith
Application Number
8/391907
Publication Number
5689823
Application Date
February 21, 1995
Publication Date
November 18, 1997
Inventor
Joseph E Phillips
Huntley
IL, US
Agent
Steven G Parmelee
Frank M Scutch III
Assignee
Motorola
IL, US
IPC
H04B 1/38
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