Portable telephone unit and indication adapter

Details Portable telephone unit and indication adapter Portable telephone unit and indication adapter

1996-04-18

1999-11-30

Bost, Dwayne D.

Telephonic communications

Having light wave or ultrasonic link for speech or paging...

Including infra-red link with landline telephone network

455566, 455575, 455 90, 359154, H04Q 720

Patent

active

059955929

ABSTRACT:
An IR emitting device and an IR receiving device are employed to transmit data to and receive data from a public telephone network. As a result, the user interface of the portable telephone unit for non-voice communication service is improved.

REFERENCES:
patent: 4456793 (1984-06-01), Baker et al.
patent: 4490584 (1984-12-01), Lucey
patent: 5138649 (1992-08-01), Krisbergh et al.
patent: 5241410 (1993-08-01), Streck et al.
patent: 5446783 (1995-08-01), May
patent: 5659890 (1997-08-01), Hidaka
patent: 5752195 (1998-05-01), Tsuji et al.
patent: 5835732 (1998-11-01), Kikinis et al.
patent: 5835862 (1998-11-01), Nykanen et al.

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