System for providing a simultaneous data and voice channel within a single channel of a portable cellular telephone to provide position-enhanced cellular services (PECS)
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United States of America Patent
Stats
-
May 1, 2001
Grant Date -
N/A
app pub date -
Dec 8, 1994
filing date -
Dec 8, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An accessory device for portable telephones which provides simultaneous functionality of a hands-free accessory device and a data-in-voice modem enabling a portable telephone to be used in a vehicle such that the driver can be engaged in a hands-free conversation at the same time as data (such as GPS position information) is being sent over the same cellular voice channel.
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Family
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