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. 22, 2015
Filed:
Jun. 10, 2011
Eitan Yaakobi, La Jolla, CA (US);
Paul Siegel, La Jolla, CA (US);
Alexander Vardy, Escondido, CA (US);
Jack Wolf, La Jolla, CA (US);
Toby Wolf, La Jolla, CA (US);
Scott Kayser, San Diego, CA (US);
Eitan Yaakobi, La Jolla, CA (US);
Paul Siegel, La Jolla, CA (US);
Alexander Vardy, Escondido, CA (US);
Jack Wolf, La Jolla, CA (US);
Scott Kayser, San Diego, CA (US);
The Regents of the University of California, Oakland, CA (US);
Abstract
The invention provides a family of 2-write WOM-codes, preferred embodiments of which provide improved WOM-rates. Embodiments of the invention provide constructs for linear codes C having a 2-write WOM-code. Embodiments of the invention provide 2-write WOM-codes that improve the best known WOM-rates known to the present inventors at the time of filing with two writes. Preferred WOM-codes are proved to be capacity achieving when the parity check matrix of the linear code C is chosen uniformly at random. Preferred embodiments of the invention provide an electronic device utilizing an efficient coding scheme of WOM-codes with two write capability. The coding method is based on linear binary codes and allows the electronic device to write information to the memory twice before erasing it. This method can be applied for any kind of memory systems, and in particular for flash memories. The method is shown to outperform all well-known codes.