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:
Aug. 17, 2010
Filed:
Mar. 21, 2007
Keiichi Yamaguchi, Kawasaki, JP;
Atsushi Yamaoka, Kawasaki, JP;
Keiichi Yamaguchi, Kawasaki, JP;
Atsushi Yamaoka, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A communicating apparatus includes: a local signal generator, an orthogonal modulator, an orthogonal demodulator, and two orthogonal error compensators. The local signal generator generates a first local signal and a second local signal. The orthogonal modulator modulates an input signal into a modulation signal by using the first local signal. The orthogonal demodulator demodulates the modulation signal into a demodulation signal by using the second local signal. Each of the two orthogonal error compensators corrects orthogonal modulation error generated in the orthogonal modulator and an orthogonal demodulation error generated in the orthogonal demodulator respectively. Set values to be set to the orthogonal error compensators are calculated based on (1) a phase difference between the first local signal and the second local signal, (2) the input signal and (3) the demodulation signal.