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. 10, 1984
Filed:
Jul. 22, 1981
Allen K Wilson, Austin, TX (US);
Frederick V Rehhausser, Austin, TX (US);
Data General Corporation, Westboro, MA (US);
Abstract
An alphanumeric keyboard having the capability to identify the language supported by the keyboard and the mode of keyboard operation. A switch component having a plurality of individually settable switch elements is connected to the keyboard control logic via bidirectional lines which are used by the control logic as excitation lines during key scanning and as sense lines during switch component monitoring. The keyboard control logic, in response to a request from the terminal associated with the keyboard, changes from a key scanning mode to a switch component sampling mode. The positions of the switch elements are supplied to the terminal over a serial data line to identify keyboard characteristics.