Low power subscriber unit transmitting voice messages in a two-w

Details Low power subscriber unit transmitting voice messages in a two-w Low power subscriber unit transmitting voice messages in a two-w

1994-09-29

1998-08-04

Peng, John K.

Telecommunications

Interference signal transmission

348 10, 348 12, 348 13, 348 14, 370 951, 370 97, 455 531, H04N 100, H04N 714, H04B 336, H04J 316

Patent

active

057909369

ABSTRACT:
An interactive data appliance (IDA) having a receiver and transmitter for sending voice packet messages in a two-way interactive broadcast data service communication system. The IDA contains a receiver into which a user recites a spoken message. The voice message is then transmitted by the IDA to a local remote receiver and then to a central transmitting station. In one embodiment of the invention, the IDA digitizes the voice message recited by the user. Additionally, in one embodiment, the IDA operates on a carrier frequency band in the order of approximately 218 MHz, is a battery operated portable unit, and has a maximum power output in the milliwatt range.

REFERENCES:
patent: 4591906 (1986-05-01), Morales-Garza et al.
patent: 4750036 (1988-06-01), Martinez
patent: 4755871 (1988-07-01), Morales-Garza et al.
patent: 5036389 (1991-07-01), Morales
patent: 5101267 (1992-03-01), Morales-Garza
patent: 5388101 (1995-02-01), Dinkins
patent: 5481546 (1996-01-01), Dinkins

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