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:
Jun. 20, 1989
Filed:
Sep. 26, 1986
Applicant:
Inventor:
Takuo Ishizuka, Hadano, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364900 ; 3649463 ;
Abstract
An apparatus for transferring data between a memory and an input/output device via a serial data transfer line including a central channel unit for sending to the input/output device a chaining instruction for chaining data stored at a plurality of locations in the memory, a remote channel unit for requesting from the central channel unit a new command causing the transfer of any succeeding data, and a unit for informing a data processing unit of an amount of data which has not been transferred from the memory to the input/output device.