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. 01, 1998
Filed:
Jul. 25, 1995
David E Murray, Houston, TX (US);
David R Wooten, Spring, TX (US);
Randall L Hess, Cypress, TX (US);
Christopher C Wanner, Tomball, TX (US);
Jeff W Wolford, Spring, TX (US);
Compaq Computer Corporation, Houston, TX (US);
Abstract
A keyboard system according to the present invention includes a serial bus host controller coupled to a serial bus keyboard. The keyboard includes both keyboard scan logic and scan code conversion logic for passing to the host controller over the serial bus. The host controller includes circuitry for processing the data between the serial bus and a host bus. The host controller further includes 8042 emulation logic for providing a hardware compatible interface to the keyboard controller. The 8042 emulation logic also includes circuitry for communicating over the serial bus during times when the serial bus has not yet been initialized.