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:
Oct. 31, 2006
Filed:
Nov. 30, 2004
Charles Porter Geer, Rochester, MN (US);
Robert Allen Shearer, Rochester, MN (US);
Charles Porter Geer, Rochester, MN (US);
Robert Allen Shearer, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An apparatus and method is disclosed for programmable determination of frequency, phase, and jitter relationship of a first clock and a second clock in an electronic system. In a first, initialization, mode, a first register and a second register are initialized with a first bit pattern and a second bit pattern, respectively. In a second, normal, mode, the first clock is coupled to the first register and the second clock is coupled to the second register. A compare unit observes the bit patterns of the first and second registers and reports when one or more predetermined relationships between the first clock and the second clock occur.