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:
Jan. 19, 1993
Filed:
Apr. 29, 1992
Kabushiki Kaisha Toshiba, Kanagawa, JP;
Abstract
Signal sources are arranged in a matrix form and provide preset analog values. Switching means are connected between signal sources and an analog output terminal having connection paths to the respective signal sources. Latch circuits are respectively provided for switch control circuits for controlling the switching means. Each of the latch circuits latches a control signal from a corresponding one of the switch control circuits and outputs the control signal in response to a preset synchronizing signal to a corresponding one of the switching means. The switching means are simultaneously controlled by output signals of decoders so that a desired analog output is permitted to be derived from the output terminal. The period of the clock signal can be shorten and a switching operation causing variation exceeding a desired variation occurring when the digital signal is changed can be prevented.