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:
Jun. 11, 1996
Filed:
Jun. 20, 1994
Donald M Keen, Indianapolis, IN (US);
AT&T Corp., Murray Hill, NJ (US);
Abstract
A procedure for cleaning a display screen in a touch screen based telephone such that features of the telephone are not inadvertently activated is described. The procedure operates by causing the telephone (actually, a processor in the telephone) to enter a 'clean screen' mode in response to a request from the user to clean the display screen. While in the 'clean screen' mode, all signals generated in response to the user touching the display screen are ignored. In this matter, while in the 'clean screen' mode, the user is able to clean the display screen without inadvertently activating any features of the telephone. The telephone automatically determines when the user has finished cleaning the display screen. When it is determined that the user has finished cleaning the display screen, the telephone leaves the 'clean screen' mode and enters an 'active screen'. While in the 'active screen' mode, all signals generated in response to the user touching the display screen are processed.