Patent ID: 7321354

Claim:
A docking system for a portable wireless telephone, the portable wireless telephone including a microphone, a speaker, and transceiver circuitry with an external communication interface within a telephone housing, the docking system comprising: a display housing having a plurality of control elements and a display circuit, the display housing including a connection interface that couples with an external communication interface of a handheld wireless telephone, such that image data received by the handheld wireless telephone is transmitted to the display circuit; an active matrix liquid crystal display mounted to the display housing and connected to the display circuit, the display circuit generating display data presented on the liquid crystal display as an image; a light source positioned in the display housing to illuminate the image; a lens in the display housing positioned to receive the image presented on the active matrix liquid crystal display; and a power management circuit that controls the power consumption of the display circuit, wherein after the image is illuminated, the power management circuit lowers the power consumption of the display circuit until new display data is ready to be presented on the liquid crystal display, the power management circuit arranged for receiving control signals for lowering the power consumption, the control signals resulting from signals from the display circuit that are initiated by the display circuit, the power management circuit and the display circuit being connected together and arranged in a configuration that lowers the power consumption in a self regulating manner.