Method and system for automatic peripheral device identification
First Claim
1. A computer system for communicating with a peripheral device communicatively coupled thereto, said computer system comprising:
- a processor for posting a notification message to alert a high priority device-specific notification handler in response to a signal received from said peripheral device, said high priority device-specific notification handler having a priority higher than a system notification handler and being capable of directly servicing said signal 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 signal from said peripheral device.
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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
6 Claims
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1. A computer system for communicating with a peripheral device communicatively coupled thereto, said computer system comprising:
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a processor for posting a notification message to alert a high priority device-specific notification handler in response to a signal received from said peripheral device, said high priority device-specific notification handler having a priority higher than a system notification handler and being capable of directly servicing said signal 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 signal from said peripheral device. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification