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. 13, 1981
Filed:
Sep. 14, 1979
Charles L Kapeghian, Vincentown, NJ (US);
Charles C Garman, Palmyra, NJ (US);
Paul R Malnati, Delran, NJ (US);
Formation, Inc., Mount Laurel, NJ (US);
Abstract
A controller for at least one secondary storage device for use in a data processing system having a system bus which accommodates a device or a CPU that first acquires control, a device bus that has the same address, data and control format as the system bus and a cache bus which maintains its own timing for address and data signals. The controller has means for transferring the control signals between the device bus and the system bus to establish control over the system bus by the secondary storage device. The data, address and control signals are transferred between the device bus and the cache bus in accordance with the cache bus timing.