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:
Dec. 28, 1993
Filed:
Mar. 24, 1992
Applicant:
Inventors:
Keisuke Tonomura, Akishima, JP;
Isao Mimura, Sakura, JP;
Assignee:
Casio Computer Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G04B / ; G04F / ;
U.S. Cl.
CPC ...
368 10 ; 368107 ;
Abstract
In an electronic reading device, the bar code of the limit time set for a question to be solved is read with a bar code reader. This limit time data is set on a sub tract timer, which decrements as time passes. The bar code reader is also designed to read the answer bar code for the question. During the limit time, answer bar codes can be read with the bar code reader. Beyond the limit time, however, those codes cannot be read. This encourages the learner to solve the questions within the limit time, enhancing the learning effects.