Patent ID: 8743128

Claim:
A mobile wireless communications device comprising: a display; a graphics processing unit (GPU) configured to be resettable and cause a change in said display when reset; a wireless transceiver; a processor cooperating with said GPU and said wireless transceiver and configured for wireless communications; said processor configured to be resettable along with said GPU, and be partially resettable without resetting said GPU to avoid a change in said display and based upon a self-initiated command; a power management circuit configured to shut down power to said GPU and said processor during resets thereof, but maintain power to said GPU and said processor during a partial reset of said processor, and having an output configured to generate a GPU reset hold signal; said processor having an output configured to generate a GPU reset signal during the partial reset of said processor; and a logic circuit configured to receive as inputs the GPU reset signal and the GPU reset hold signal and output a reset control signal to said GPU for resetting said GPU during the reset of said processor, and not resetting said GPO during the partial reset of said processor.