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. 05, 2003
Filed:
Jan. 04, 2000
Masayuki Doi, Hyogo, JP;
Abstract
A power calculator calculates the power of an input signal in accordance with a component of an input received signal. A comparator asserts an unmodulated signal detection signal when the power calculated by the power calculator exceeds a prescribed threshold. A maximum value detector detects the maximum power of the input received signal in accordance with the assertion of the unmodulated signal detection signal and generates non-modulated signal position instruction information with a maximum value detection signal, and a frequency error calculator calculates an error of a carrier frequency on the basis of the received signal corresponding to the maximum power. The frequency error is calculated only with a non-modulated signal, whereby the frequency error can be correctly calculated and the non-modulated signal position can also be correctly detected.