Radio having an option board interface and an option board for u

Details Radio having an option board interface and an option board for u Radio having an option board interface and an option board for u

1995-02-21

1997-11-18

Urban, Edward F.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455 90, 4551861, H04B 138

Patent

active

056898231

ABSTRACT:
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.

REFERENCES:
patent: 5335276 (1994-08-01), Thompson et al.
patent: 5353328 (1994-10-01), Jokimies
patent: 5404580 (1995-04-01), Simpson et al.
patent: 5418837 (1995-05-01), Johansson et al.
patent: 5465401 (1995-11-01), Thompson

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