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:
Apr. 14, 2009
Filed:
Oct. 04, 2002
Yoshiteru Matsushita, Chiba, JP;
Kimihiko Imamura, Chiba, JP;
Yoshiteru Matsushita, Chiba, JP;
Kimihiko Imamura, Chiba, JP;
Sharp Kabushiki Kaisha, Osaka-shi, JP;
Abstract
An OFDM demodulation circuit capable of initiating a demodulation process within a short period of time after the reception of a signal and terminating the demodulation early if it has been initiated erroneously, and an OFDM reception apparatus employing the OFDM demodulation circuit. If a threshold value Sthin peak detectoris not exceeded within a predetermined time T following the output of a symbol timing signal from peak detector, namely if a continuation timing signal is not supplied from peak detectorto a demodulation process terminating circuitbefore demodulation process terminating circuitcounts predetermined time T (step S), demodulation process terminating circuit, determining that the position at which the demodulation process has been started was wrong, terminates the currently executed demodulation process soon after the completion of the counting of predetermined time T and returns to a received-signal awaiting state (step S).