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:
Apr. 03, 1990
Filed:
May. 17, 1988
Applicant:
Inventor:
Kenji Nakamura, Owariasahi, JP;
Assignee:
Hitachi, Ltd., Chiyoda, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ; G09G / ;
U.S. Cl.
CPC ...
315364 ; 340711 ; 341 24 ;
Abstract
An object placed on a transparent touch panel horizontally arranged on a CRT is detected as an undesired material if a touch state longer than a normal key-in input time is detected. Removal of the undesired material is requested by the CRT display or an audio unit so that repetitive malfunction is prevented. A second longer time may be set to call a service man.