Integrated secure and non-secure display for a handheld communications device

摘要

A handheld communications device is created with a touch sensitive display, a secure computing component, and a non-secure computing component. The secure component may comprise a secure CPU executing a secure operating system. The non-secure component may comprise a separate non-secure CPU executing a separate non-secure operating system. The touch sensitive display on the handheld communications device is divided into a secure portion and a non-secure portion such that information displayed in the secure portion is provided by the secure operating system, and information displayed in the non-secure portion is provided by the non-secure operating system. Similarly, data entered through the secure portion of the display is provided to the secure operating system, and data entered through the non-secure portion of the display is provided to the non-secure operating system.

主权项

1. A method for identifying inputs to a handheld communications device, the method comprising:
receiving an input to the handheld communications device via a touch screen display; determining whether coordinates of the input correspond to coordinates of a first portion of the touch screen display or to coordinates of a second, concurrently present portion of the touch screen display at a first component, wherein the determination as to whether the coordinates of the input correspond to the coordinates of the first portion of the touch screen display or to the coordinates of the second portion of the touch screen display dictates which of a plurality of operating system process the input; processing the input at the first component on condition that it is determined that the coordinates of the input correspond to the coordinates of the first portion of the touch screen display, wherein the first component comprises a first operating system of the plurality of operating systems configured to provide information to be displayed on the first portion of the touch screen display and to process inputs received via the first portion of the touch screen display; processing the input at a second component on condition that it is determined that the coordinates of the input correspond to the coordinates of the second portion of the touch screen display, wherein the second component comprises a second operating system of the plurality of operating systems configured to provide information to be displayed the second portion of the touch screen display and to process inputs received via the second portion of the touch screen display; and routing information provided from the first operating system and information provided from the second operating system to a display controller, wherein the display controller displays the information routed from the first operating system on the first portion of the touch screen display and displays the information routed from the second operating system on the second portion of the touch screen display.