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. 12, 2013
Filed:
Sep. 15, 2011
Shoichi Sasahara, Tokyo, JP;
Tatsuhisa Furukawa, Kanagawa, JP;
Shoichi Sasahara, Tokyo, JP;
Tatsuhisa Furukawa, Kanagawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
Embodiments are provided: a known signal extraction circuit a distributing arrangement circuit which distributes a known signal in a fixed section; a frequency conversion circuit which causes the distributed output to be a frequency-domain signal; a delay detection circuit which determines an amount of phase variation between adjacent frequency components in the frequency-domain signal; a distributing arrangement circuit which distributes a signal of the same sequence as the known signal described above in a fixed section; a frequency conversion circuit which causes the distributed output to be a frequency-domain signal; a delay detection circuit which determines an amount of phase variation between adjacent frequency components in the frequency-domain signal; a correlation operation circuit which obtains a correlation value between two delay detection outputs; and a peak detection circuit which detects one or more high power peaks among the correlation values and obtain frequency difference from a reference value.