Dual mode receiver having battery saving capability

Details Dual mode receiver having battery saving capability Dual mode receiver having battery saving capability

H - Electricity

04

B

H04B 1/16 (2006.01) H04Q 7/18 (2006.01)

Patent

CA 2139516

A dual mode communication receiver comprises a first demodulator (108) for detecting information received in a first modulation format, and a second demodulator (112), responsive to the information detected in the first modulation format, for detecting information received in a second modulation format. The first and second demodulators (108, 112) share a common receiver front end (102). A power conservation circuit (104) is provided for selectively supplying power to the first and second demodulators (108, 112) for enabling the detecting of the information received in the first modulation format and the second modulation format, respectively.

Un récepteur de communication en deux modes comprend un premier démodulateur (108) pour détecter l'information reçue dans un premier format de modulation et un second démodulateur (112) sensible à l'information détectée dans le premier format de modulation, pour détecter l'information reçue dans un second format de modulation. Le premier et le second démodulateur (108, 112) partagent un même élément récepteur frontal (102). Un circuit pour économiser l'énergie (104) est prévu pour fournir sélectivement du courant au premier et au second démodulateur (108, 112) pour pouvoir détecter l'information reçue respectivement dans le premier format de modulation et dans le second format de modulation.

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