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:
Dec. 15, 2009
Filed:
Feb. 08, 2008
Koichi Takemura, Nara, JP;
Daisuke Bessyo, Nara, JP;
Fumikazu Shiba, Nara, JP;
Yuji Nakabayashi, Nara, JP;
Koichi Takemura, Nara, JP;
Daisuke Bessyo, Nara, JP;
Fumikazu Shiba, Nara, JP;
Yuji Nakabayashi, Nara, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A measurement control section includes a time measuring section for controlling an operation of measuring a travel time of an ultrasonic wave. The measurement control section operations, based on a high rate clock signal supplied from a ceramic oscillation circuit during the time measuring operation. A clock control section stops the high rate clock signal supplied from the ceramic oscillation circuit every time when the time measuring section completes its time measuring operation, and uses a low rate clock signal supplied from a quartz oscillation circuit to count a standby time between the end of measuring the travel time and the start of carrying out the next measuring operation.