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:
Oct. 03, 1989
Filed:
Mar. 21, 1988
Eisuke Ichinohe, Katano, JP;
Matsushita Electric Industrial Co., Ltd., Osaka,, JP;
Abstract
A bus circuit capable of realizing a high speed data transfer cycle by eliminating undesired voltage amplitude of the data bus lines, includes a plurality of data bus lines, a potential initializing circuit for setting the initial potential of these data bus lines, an output port circuit for delivering data to these data bus lines, and an input port circuit for feeding data from these data bus lines. At least one of the data bus lines is a potential sensing line, and the sensing line is coupled to an inverting output circuit for inverting the initial potential from the output port circuit, and the potential change of this inverting output means is detected by a data firm judging means connected to the sensing line, and the output port circuit is deactivated by a control circuit in accordance with a judgement signal from the data firm judging circuit.