Cellular telephone with voice-in-data modem

Details Cellular telephone with voice-in-data modem Cellular telephone with voice-in-data modem

1994-11-23

1998-03-10

Louis-Jacques, Jacques

Boots, shoes, and leggings

3644499, 3644498, 3644491, 342457, 342450, 375222, 379 93, 379 98, 390493, G06G 778, G01S 302, H03C 100

Patent

active

057268932

ABSTRACT:
A GPS system has a plurality of satellites transmitting time and location data over radio frequency signals which enable a mobile GPS receiver on the ground to determine its position, includes a source of satellite data message block containing the ephemeris and time modes of the GPS satellites which is independent of the satellites, and an independent cellular telephone channel having a voice channel, a data-in-voice modem including a notch filtering circuit in the voice channel (transmits and receive) and circuits for inserting and retrieving data in and from the notch for accessing said satellite data message block and controller means connecting said satellite message data block to said mobile GPS receiver.

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Voice Too.TM. Modem by OPTEL Communications no date.

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