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:
Jun. 12, 2012
Filed:
Feb. 21, 2008
Mang Ou-yang, Hsinchu, TW;
Yu-ta Chen, Hsinchu, TW;
Ching-cherng Sun, Hsinchu, TW;
Tsung-hsun Yang, Hsinchu, TW;
Mang Ou-Yang, Hsinchu, TW;
Yu-Ta Chen, Hsinchu, TW;
Ching-Cherng Sun, Hsinchu, TW;
Tsung-Hsun Yang, Hsinchu, TW;
National Chiao Tung University, Hsinchu, TW;
Abstract
A gray code encoding and decoding method applied to holographic storage devices is proposed. The encoding method uses gray levels of a 2D detector to encode a certain amount of original bits of the original data, and then sends them to a spatial light modulator (SLM) for encryption. The decoding method corrects the received gray levels to the original gray levels, and then compares the maximum gray level with the original gray levels to decode the original gray level into binary data. The proposed encoding and decoding method can better make use of storage locations of the 2D detector and get a code rate close to 1.