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:
Apr. 18, 1995
Filed:
Dec. 22, 1992
Douglas A MacIntyre, Allston, MA (US);
Thomas B Hawkins, Boylston, MA (US);
Digital Equipment Corporation, Maynard, MA (US);
Abstract
A phase delay compensator apparatus is provided which compensates for the phase error caused by propagation delay differences between clock and data paths within a computer system. A look-up table circuit is used to dynamically translate a change in frequency of the computer system clock or a change in the length of cable connecting the computer's sub-assemblies to a binary bit pattern defining the requisite phase-shift between distributed clock and data signals. A generator circuit produces phases of the phase-shifted clock signals, while ensuring the integrity of the loaded binary bit pattern. A gated signal is created for enabling the generator circuit.