The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 13, 2010
Filed:
Jan. 09, 2004
Steve Lemke, Sunnyvale, CA (US);
Rich Karstens, Lake Forest Park, WA (US);
Bob Ebert, Montpellier, FR;
Steve Lemke, Sunnyvale, CA (US);
Rich Karstens, Lake Forest Park, WA (US);
Bob Ebert, Montpellier, FR;
Palm Inc., Sunnyvale, CA (US);
Abstract
Method and system for latency-independent peripheral device identification. In one embodiment, a computer system receives an interrupt from a peripheral device coupled to a computer system communications port. In response, an interrupt notification message is posted alerting a notification handler running on the system. It is determined whether the interrupt is indicates peripheral class compliance. In one embodiment, communications port device sense pin voltage is determinative. If the interrupt indicates peripheral class compliance and the communications port is inactive, the port is opened, and inquiry sent to the peripheral device via the open port. The computer system then waits for response from the peripheral device. If response is received within a predetermined time, identification is posted based on the response, including peripheral device classification information, so that a software handler registered with the operating system can handle the identification message when received. Thus, this embodiment imposes no time-critical interrupt response.