Patent ID: 6035212
Filing Date: 2000-03-07
Classification: H04B,H04W

Abstract:
A wireless communication device for allowing two-way voice communication in a cellular telephone communication system having at least one operating frequency band which at least one operating frequency band is one of several possible cellular telephone operating frequency bands, said device comprising:operator voice input means and audio output means, respectively allowing an operator of said device to input voice communications and to hear voice communications from said cellular telephone communication system;a radio frequency (RF) transceiver portion for sending and receiving RF signals carrying said two-way voice communications in said cellular communication system;said RF transceiver portion having a first RF transceiver part having a respective first operating frequency band, and a second RF transceiver part having a respective second operating frequency band which is different than said first operating frequency band, one of said first and second operating frequency bands being compatible with said at least one operating frequency band of said cellular communication system;a micro-controller interfacing with said RF transceiver portion of said device to alternatingly actuate said first transceiver part and said second transceiver part in order to detect when a signal is received from said cellular communication system in response to activation of one of said first and second RF transceiver parts, said micro-controller thereafter maintaining activation of said one transceiver part to adapt said wireless communication device for voice communication in said cellular telephone communication system;said cellular communication system provides communication in a particular protocol, said device further including an adaptation tree circuit conveying communication signals in said device between said RF transceiver portion and said operator voice input means and audio output means, said adaptation tree circuit including at least two adaptation branches a first of which is adapted to process communication signals of a first protocol, and a second of which is adapted to process communication signals of a second protocol, said micro-controller interfacing also with said adaptation branches to detect when a communication signal is received from said cellular communication system and processed according to one of said first and second protocols in response to activation of one of said adaptation branches, said micro-controller thereafter maintaining activation of said one adaptation branch to adapt said wireless communication device for voice communication in said cellular telephone communication system; andsaid micro-controller further includes programming for performing a sorting-and-selection process including: selection of a first protocol for said adaptation tree, subsequently cycling said RF transceiver portion of said device through the available frequencies, and for responding to an intelligible signal; whereby a second and successive protocols are selected with the RF transceiver part each time being cycled through the available frequencies until the combination of communication protocol and operating frequency band provides said intelligible signal whereupon the particular combination of communication protocol and operating frequency band is maintained.