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. 21, 2003
Filed:
Dec. 04, 2000
Steven Grundon, Jericho, VT (US);
Mark Kellogg, Essex Junction, VT (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
The invention encompasses memory systems and/or memory modules which allow selectable clock termination between the clock/clock buffer and components of the memory modules. The invention provides a fully forward and backward compatible memory solution. The invention provides the memory modules themselves, the FET switches designed for use on the modules, and the systems that include enable/disable pins to use these modules. This invention will permit memory modules to be developed that can operate in existing (emerging) memory subsystems, as well as meet the low power/low pin count needs of future memory subsystems with no required changes to the existing/emerging systems. For 184 Pin Registered DIMMs, the power savings will equate to greater than 200 mw/DIMM, and systems will be permitted to connect DIMM clocks in serial, similar to address/control lines, thereby increasing the address/control window as well as the system read loop-back timings.