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:
Nov. 20, 2007
Filed:
Feb. 06, 2004
Hiroaki Kubo, Ohmihachiman, JP;
Norio Fujita, Shiga-ken, JP;
Hiroaki Kubo, Ohmihachiman, JP;
Norio Fujita, Shiga-ken, JP;
International Business Machines Corporation, Armonk, NY (US);
Abstract
Wireless data communication method and apparatus using two electromagnetic signals having different polarizations. Codes related to relative values of the amplitudes of the two signals are generated in correspondence with data to be transmitted. The signals are modulated according to the codes using phase shift keying and amplitude shift keying. The amplitude shift keying modulates the two electromagnetic signals by changing the difference between their two amplitudes in accordance with data encodings. The two signals are transmitted to receiver, which decodes the phases and relative amplitudes to obtain the codes, and reproduces the data from the obtained codes.