Method and system for identifying a peripheral device by a high priority device-specific notification handler
First Claim
1. A method for identifying a peripheral device coupled to a computer system, said method comprising:
- receiving a message from said peripheral device, said peripheral device being coupled to a communications port of said computer system;
responsive to said message, posting a notification to alert a high priority device-specific notification handler, said high priority device-specific notification handler having a higher priority than a system notification handler and being capable of directly servicing said message from said peripheral device without involving said system notification handler; and
servicing said notification upon receipt thereof.
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0 Petitions
Accused Products
Abstract
Method and system for latency-independent peripheral device identification. The computer system receives an interrupt from a peripheral device via a communications port. In response, an interrupt notification message is posted to alert a notification handler, and compliant peripheral class is determined. The voltage on a device may sense pin of the communications port for this determination. If the interrupt is indicative of the compliant peripheral class and the communications port is inactive, the port is opened, and an inquiry is sent and a response is received. If a response is received within a predetermined time period, an identification notification message is posted based on the response including information for classifying the peripheral device, so that a software handler registered with the operating system can handle the identification notification message when the software handler receives it. Thus, no time-critical interrupt response requirement is imposed for its successful operation.
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Citations
25 Claims
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1. A method for identifying a peripheral device coupled to a computer system, said method comprising:
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receiving a message from said peripheral device, said peripheral device being coupled to a communications port of said computer system; responsive to said message, posting a notification to alert a high priority device-specific notification handler, said high priority device-specific notification handler having a higher priority than a system notification handler and being capable of directly servicing said message from said peripheral device without involving said system notification handler; and servicing said notification upon receipt thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A computer system capable of identifying a peripheral device communicatively coupled thereto, said computer system comprising:
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a processor for posting a notification to alert a high priority device-specific notification handler in response to a message received from a peripheral device, said high priority device-specific notification handler having a higher priority than a system message handler and being capable of directly servicing a message from said peripheral device without involving said system notification handler; a memory coupled to said processor; and a communications port coupled to said processor, said communications port for receiving said message from said peripheral device. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A portable electronic device capable of identifying a peripheral device communicatively coupled thereto, said portable electronic device comprising:
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a processor for posting a notification to alert a high priority device-specific notification handler in response to a message received from a peripheral device, said high priority device-specific notification handler having a higher priority than a system message handler and being capable of directly servicing a message from said peripheral device without involving said system notification handler; a memory coupled to said processor; and a communications port coupled to said processor, said communications port for receiving said message from said peripheral device. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification