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:
Oct. 28, 2008
Filed:
Jul. 13, 2006
Toshihito Shirai, Kuki, JP;
Takaharu Ishige, Kuki, JP;
Masayoshi Sakai, Kuki, JP;
Wakana Sannomiya, Kuki, JP;
Toshihito Shirai, Kuki, JP;
Takaharu Ishige, Kuki, JP;
Masayoshi Sakai, Kuki, JP;
Wakana Sannomiya, Kuki, JP;
The Nippon Signal Co., Ltd., Tokyo, JP;
Abstract
The invention provides a reception time determining apparatus which can measure reception time to a high accuracy, without expanding an occupied bandwidth, and a distance measuring apparatus which uses the reception time determining apparatus. There is provided a reception time determining apparatus () where a transmitter () sends a transmission signal which produces a demodulation signal in which a signal change portion is unevenly distributed on a time axis, and there is provided: a demodulation section () which receives and demodulates this transmission signal and outputs a demodulation signal in which a signal change portion is unevenly distributed on a time axis; a signal change portion detection section () which detects the signal change portion of the demodulation signal which is output from the demodulation section (), and outputs a signal change portion detection signal; and a time measurement section () which measures a reception time of the reception signal based on the signal change portion detection signal output from the signal change portion detection section ().