TOUCH SCREEN CONTROLLER WITH EMBEDDED OVERLAY
First Claim
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1. An apparatus, comprising:
- an integrated circuit (IC) comprising interface circuitry and overlay controller circuitry configured to communicate with each other and with a host processor via an embedded communication bus, said interface circuitry is configured to receive an overlay request signal, and, in response to said overlay request signal, said overlay controller circuitry is configured to read overlay information stored in memory coupled to said embedded communication bus and to send the overlay information to a display, via said embedded communication bus, independently of a host operating system to be executed by said host processor.
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Abstract
A method according to one embodiment may include receiving, by a touch screen controller, an overlay request signal. The method may also include reading, by the touch screen controller, overlay information stored in a memory device. The method may also include sending, by the touch screen controller, the overlay information to a display independently of a host operating system executed by a host processor. Many alternatives, variations and modifications are possible without departing from this embodiment.
39 Citations
18 Claims
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1. An apparatus, comprising:
an integrated circuit (IC) comprising interface circuitry and overlay controller circuitry configured to communicate with each other and with a host processor via an embedded communication bus, said interface circuitry is configured to receive an overlay request signal, and, in response to said overlay request signal, said overlay controller circuitry is configured to read overlay information stored in memory coupled to said embedded communication bus and to send the overlay information to a display, via said embedded communication bus, independently of a host operating system to be executed by said host processor. - View Dependent Claims (2, 3, 4, 5)
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6. A method, comprising:
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receiving, by a touch screen controller, an overlay request signal; reading, by the touch screen controller, overlay information stored in memory; and sending, by the touch screen controller, the overlay information to a display independently of an host operating system to be executed by a host processor. - View Dependent Claims (7, 8)
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9. The method of claim 9, further comprising:
selecting the overlay information from at least one of keyboard information, menu information, calculator information and setup information.
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10. A system, comprising:
a handheld electronic device comprising a display screen, a touch screen, a host processor and a touch screen controller;
said touch screen controller comprising interface circuitry and overlay controller circuitry configured to communicate with each other and with the host processor via an embedded communication bus, said interface circuitry is configured to receive an overlay request signal, and, in response to said overlay request signal, said overlay controller circuitry is configured to read overlay information stored in a memory device coupled to said embedded communication bus and to send the overlay information to a display, via said embedded communication bus, independently of a host operating system to be executed by the host processor.- View Dependent Claims (11, 12, 13, 14, 15)
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16. An article, comprising:
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a storage medium storing instructions that when executed by a machine result in the following operations; receiving, by a touch screen controller, an overlay request signal; reading, by the touch screen controller, overlay information stored in a memory device; and sending, by the touch screen controller, the overlay information to a display independently of an host operating system executed by a host processor. - View Dependent Claims (17, 18)
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Specification