Patent ID: 6226529
Filing Date: 2001-05-01
Classification: H04B,H04M,H04W

Abstract:
A cellular telephone accessory system for simultaneously incorporating data and voice within a single voice channel of a portable cellular telephone having an accessible phone bus, comprising:1) cradle means for receiving said portable cellular telephone and having a microphone interface and speaker interfaces,2) a core unit having a data-in-voice modem for receiving and transmitting voice and data signals simultaneously in said single voice channel when said cellular telephone is in said cradle, a micro controller, switch means controlled by said micro controller for controlling data and voice signals to and from said modem on said single voice channel, and a hands-free controller circuit for sensing presence of said portable cellular telephone in said cradle,3) connector means for:1) a supplemental antenna and means of coupling RF signals from said portable cellular telephone to said supplemental antenna,2) coupling audio lines of said telephone bus to said data-in-voice modem in said core unit, and4) a voice line controlled by said hands-free circuit for connecting said microphone and speaker to said core unit.