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:
Mar. 13, 2007
Filed:
Aug. 22, 2003
Kazuyuki Saijo, Tokyo, JP;
Moonjae Jeong, Kanagawa, JP;
Kazuyuki Saijo, Tokyo, JP;
Moonjae Jeong, Kanagawa, JP;
Sony Corporation, , JP;
Abstract
In a sampling block-, an intermediate frequency signal RIFs is sampled at a frequency of the intermediate frequency signal RIFs multiplied by '1/(m+0.25)' or '1/(m+0.75)' (m: 0 or natural number), to generate signals having phase differences “0”, “π/2”, “π”, and “3π/2”. A polarity adjustment block-matches a polarity of the signal having phase difference “π” with that of the signal having phase difference “0”. Further, it matches a polarity of the signal having phase difference “3π/2” with that of the signal having phase difference “π/2”. In a signal synthesis block-, the signal with phase difference “0” and the signal with phase difference “π” having phase difference “π” from each other are synthesized and held to be output as a demodulated signal PI. Further, the signal with phase difference “π/2” and the signal with phase difference “3π/2” having phase difference “π” from each other are synthesized and held to be output as a demodulated signal PQ. It is possible to provide a demodulation circuit and a receiving set that can easily obtain a good demodulated signal by a simple configuration.