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:
Sep. 23, 1997
Filed:
Feb. 22, 1996
Reginia K Chan, Fremont, CA (US);
Yishao Max Huang, San Jose, CA (US);
O.sub.2 Micro, Inc., Santa Clara, CA (US);
Abstract
A PC Card controller, adapted for use in a laptop or notebook computer, generates a fake PC Card-insertion interrupt when a CPU, included in the computer, resumes normal operation after being in a lower power, Suspend operating mode. The PC Card controller includes a host-computer bus-interface adapted for exchanging interrupt signals with a bus included in the host computer. The PC Card controller also includes a PC Card interface-circuit for exchanging digital signals with a PC Card inserted into a PC Card socket included in the host computer. Insertion of a PC Card into the PC Card socket, while the CPU is in its normal operating mode, causes the PC Card interface-circuit to generate an interrupt signal for transmission to the CPU. The PC Card controller also includes a suspend/resume pin that receives a suspend/resume signal generated within the host computer. A fake PC Card-insertion-interrupt generating-circuit, upon detecting a state change in the suspend/resume signal that indicates resumption of normal CPU operation, generates an interrupt signal which simulates insertion of a PC Card into the PC Card socket.