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. 21, 2008
Filed:
Jul. 06, 2006
Rom-shen Kao, Durham, NC (US);
Rom-Shen Kao, Durham, NC (US);
Qimonda North America Corp., Cary, NC (US);
Abstract
Embodiments of the invention provide a method, devices, and system for accessing data in a nonvolatile memory device via a volatile memory device. In one embodiment, the method includes configuring a size and a base address of an overlay window within an address space of the volatile memory device. The overlay window includes a range of memory addresses. The method also includes receiving an access command via a volatile memory interface of the volatile memory device and using the access command to access a memory array of the volatile memory device if an address of the access command is outside of the overlay window. The method further includes using the access command to access the nonvolatile memory device via a nonvolatile memory interface of the volatile memory device if the address of the access command is within the overlay window.