Patent ID: 8261064
Filing Date: 2012-09-04
Classification: G06F

Abstract:
1. A method for secure and non-secure operation of a handheld communications device, the method comprising: receiving an input to the handheld communications device via a touch screen display; forwarding coordinates of the input to a secure CPU; determining if the input was directed to the secure CPU, or to a non-secure CPU at the secure CPU, wherein the determining comprises determining if the coordinates of the input correspond to coordinates of a non-secure portion of the touch screen display or coordinates of a separate, concurrently present secure portion of the touch screen display; processing the received input at the secure CPU if it is determined that the input was received from the secure portion of the touch screen display; communicating the received input from the secure CPU to the non-secure CPU if it is determined that the input was received from the non-secure portion of the touch screen display; processing the received input at the non-secure CPU if it is determined that the input was received from the non-secure portion of the touch screen display; and displaying secure data generated by the secure CPU at the secure portion of the touch screen display and displaying non-secure data generated by the non-secure CPU at the non-secure portion of the touch screen display.