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FILTERING QUEUE FOR TOUCH SCREEN SELECTIONS

IP.com Disclosure Number: IPCOM000026643D
Original Publication Date: 1993-Feb-28
Included in the Prior Art Database: 2004-Apr-06
Document File: 2 page(s) / 83K

Publishing Venue

Xerox Disclosure Journal

Abstract

In a copier/printer employing a programming touch screen with a CRT icon display representing program selections as a User Interface, if the touch selections are not filtered, an operator can build up a queue of selections which will either be ignored, cause a system crash when queuing s ace runs out, or,

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XEROX DISCLOSURE JOURNAL

FILTERING QUEUE FOR TOUCH SCREEN SELECTIONS U.S. C1.355/202 Craig W. Jacobs
Joseph L. Filion

Proposed Classification

Int. C1. G03G 21/00

In a copier/printer employing a programming touch screen with a CRT icon display representing program selections as a User Interface, if the touch selections are not filtered, an operator can build up a queue of selections which will either be ignored, cause a system crash when queuing s ace runs out, or,

the operator has finished making selections. In the latter case, an operator may make a wrong selection if a previous selection caused a frame change at a higher level which subsequently replaced the intended icon with another selection.

given sufficient queuing resources, will be processed one a P ter another after

To obviate this, a filtering/queuing algorithm is employed to minimize and control selection queuing while at the same time increasing the performance reliability for touch acceptance. The algorithm uses a high frequency software filter which rejects touch selections occurring within 150 milliseconds of the previous touch selection. Generally, any touch selection occurring while the last selection is being processed will be filtered out by the touch screen receiving software.

The filter is augmented with a 'One Selection Queuing" algorithm which allows only a single touch selection to be queued, given that the last selection occurred more than 150 milliseconds before the queued selection and...