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:
Nov. 22, 1994
Filed:
Apr. 16, 1992
Etsuya Yokoyama, Himeji, JP;
Yasusi Okamoto, Itami, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A communication system in which a control microcomputer (1) for an electronic device and a peripheral device thereof are connected with each other with less signal lines by using serial communication interface function (SIO) integrated in a microcomputer, wherein since an accessing request signal (REQ signal:first signal) from the control microcomputer (1) to a communication IC (3) is also used as a response signal to an access request signal from the communication IC (3) to the control microcomputer (1), and on the contrary, all accessing request signal (INT signal:third signal) from the communication IC (3) to the control microcomputer (1) is also used as a response signal to an accessing request signal from the control microcomputer (1) to the communication IC (3), the number of control signals can be reduced.