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:
Mar. 20, 1979
Filed:
Oct. 15, 1976
Tokyo Shibaura Electric Co., Ltd., Kawasaki, JP;
Abstract
The system comprises a central information processing unit, an input/output unit, a first-in first-out stack which is connected to receive information from the central information processing unit for sending a 'FULL' signal to the central information processing unit when the stack is filled with the information sent from the central information processing unit and for sending thereto an 'EMPTY' signal when the stack is empty, an input/output control circuit which operates to transfer the information from the first-in first-out stack to the input/output unit and to detect the state thereof for sending a 'READY' signal to the central processing unit when the input/output unit is in a state ready for accepting the information, a command register coupled to the central information processing unit to be set at a particular bit by a bit signal sent from the central processing unit when it receives the 'FULL' signal from the first-in first-out stack and the 'READY' signal from the input/output control circuit, and a buffer control circuit energized by the output signal from the command register set at the particular bit for applying a transfer commencement command signal to the first-in first-out stack thereby causing it to transfer information to the input/output unit via the input/output control unit.