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. 05, 2010
Filed:
Mar. 04, 2008
Takao Moriyama, Chiyoda-ku, JP;
Hideyuki Oguro, Chiyoda-ku, JP;
Seigo Inobe, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
In a programmable controller including a special unit, a special-purpose integrated circuit element can be readily utilized for multiple purposes to extend the range of applications to reduce a manufacture cost. A special unit () connected to a microprocessor for performing I/O control through a bus includes an integrated circuit element () having a logic circuit unit (n (n=0 to 7)) whose operation specifications are determined by a parameter memory. The logic circuit unit (n) includes a reversible counter used for both high-speed input processing and high-speed output processing as a main component, and is connected to I/O interface circuits (X) (Y) through a first port () and a second port (). In addition, because the function of the logic circuit unit (n) is determined by a content of a special instruction in a sequential program, the logic circuit unit (n) is commonly used for various types of I/O interface circuits to allow the integrated circuit element to be used for multiple purposes.