Automatic gain control in a personal navigation device

H - Electricity – 04 – M

Patent

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Details

H04M 11/06 (2006.01)

Patent

CA 2758794

In one example, a Bluetooth enabled navigation device pairs with a mobile phone and then sends a plurality of tuning transmissions, each at a different transmission power gain amount, to a remote server using the mobile phone. These tuning transmissions are encoded using frequency tones that synthesize speech for transmission through the mobile phone and a voice channel of its wireless telecommunications network. The navigation device then tunes transmit power settings according to a received response to the tuning transmissions and uses the tuned transmit power settings for subsequent transmission to the remote server using this particular mobile phone.

Selon un exemple de la présente invention, un dispositif de navigation à capacité Bluetooth se couple avec un téléphone mobile, puis adresse une pluralité de transmissions de syntonisation, chacune selon une valeur différente de gain de transmission de puissance, à un serveur distant à l'aide du téléphone mobile. Ces transmissions de syntonisation sont codées à l'aide de tons de fréquence qui synthétisent la parole pour une transmission par le téléphone mobile et un canal vocal de son réseau de télécommunications sans fil. Le dispositif de navigation syntonise ensuite des réglages de puissance de transmission selon la réponse reçue aux transmissions de syntonisation et utilise les réglages de puissance de transmission syntonisée pour une transmission ultérieure au serveur à distance à l'aide de ce téléphone mobile particulier.

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