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:
Jul. 02, 1985
Filed:
Jul. 26, 1982
Applicant:
Inventors:
William H Ambrosius, III, Mission Viejo, CA (US);
Randall Chung, Laguna Niguel, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ; G06F / ;
U.S. Cl.
CPC ...
364200 ;
Abstract
A direct buffer access circuit provides a buffer memory for use with a host central processing unit and a peripheral controller for controlling an external data storage device such as a disk or tape drive. The buffer is connected so that both the host and the controller have direct access to the buffer. The host can thus transfer data to the buffer at its own data rate independently of the transfer rate of the controller. The buffer may include either a random access memory which is addressed by a counter, or a first-in/first-out memory. The buffer is controlled by signals received from either the host or the controller.