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:
Aug. 20, 1996
Filed:
Dec. 27, 1994
Reiji Segawa, Osaka, JP;
Tatsuhiko Nagahisa, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A single data output terminal and an output portion having a pair of output control terminals for generating a ternary output, are disposed for a plurality of data input terminals and a plurality of control input terminals in the same number as that of the data input terminals. Input changeover portions have (i) a state where data signals can be entered into the output control terminals and (ii) a state where the data signals cannot be entered into the output control terminals. An input control portion supplies, according to the states of control signals entered therein, a changeover signal for switching the input changeover portions to (i) a mode in which one of the input changeover portions is set to the conductive state, or (ii) a mode in which all of the input changeover portions are set to the non-conductive state. According to the states of entered control signals, an output control portion controls the output portion such that a high impedance signal is supplied according to a changeover signal for setting all of the input changeover portions to the non-conductive state, and that there is generated an output signal identical with the value of an entered binary data signal according to a changeover signal for setting one of the input changeover portions to the conductive state.