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:
Sep. 05, 1989
Filed:
Sep. 04, 1987
Victoria M Triolo, Boylston, MA (US);
Elbert Bloom, Southboro, MA (US);
David W Hartwell, Boxboro, MA (US);
Digital Equipment Corporation, Maynard, MA (US);
Abstract
A control adapter module in a bus adapter connecting a high-speed pended bus to a slower speed non-pended bus functions as a node of the non-pended bus. An interconnect bus extends between the control module and a response adapter module functioning as a node on the pended bus. Control signals on the interconnect bus generated by the response module comprise status signals having an indefinite assertion duration, and are deasserted only in response to control signals on the interconnect bus generated by the control module, which have a finite duration. Control signals on the interconnect bus generated by the response module are synchronized by a dual-rank synchronizer controlled by two phases of a multiphase clock signal derived from the clock signal of the non-pended bus. Control signals on the interconnect bus generated by the control module are synchronized by a dual-rank synchronizer controlled by two phases of a multiphase clock signal derived from the pended bus clock signal.