Semiconductor chip and a mobile telephone including said...

Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail

Reexamination Certificate

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Details

C455S556100, C455S569100, C455S572000, C455S573000, C345S690000, C345S696000, C345S698000

Reexamination Certificate

active

07085593

ABSTRACT:
A mobile telephone1including a display screen3and a semiconductor chip5. The semiconductor chip5includes control means7, a receiver9and a memory11. The receiver9receives one or more first, second and/or third signals from first, second and third sensors15, 17and19respectively. When the control means7receives a signal from the receiver9indicating that the current mode of contrast and/or color is to be changed, the control means7selects an associated pre-defined mode of contrast and/or color from the memory11in order to optimize the visibility of the display screen3, subject to the amount of supply voltage available.

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