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. 28, 2010
Filed:
May. 04, 2007
Fumiyuki Onoda, Tama, JP;
Hiroshi Niwa, Koganei, JP;
Tomohiko Oda, Kawagoe, JP;
Minoru Sato, Hino, JP;
Kensuke Miyake, Hachioji, JP;
Yoshitaka Miyoshi, Hachioji, JP;
Kazutaka Tuji, Hachioji, JP;
Chieko Aizawa, Hachioji, JP;
Fumiyuki Onoda, Tama, JP;
Hiroshi Niwa, Koganei, JP;
Tomohiko Oda, Kawagoe, JP;
Minoru Sato, Hino, JP;
Kensuke Miyake, Hachioji, JP;
Yoshitaka Miyoshi, Hachioji, JP;
Kazutaka Tuji, Hachioji, JP;
Chieko Aizawa, Hachioji, JP;
Olympus Medical Systems Corp., Tokyo, JP;
Olympus Corporation, Tokyo, JP;
Abstract
A source coil drive circuit section of an endoscope shape detection device includes, an oscillator that generates a sine wave and an amplifier that amplifies the sine wave and generates (drives) an alternating magnetic field to source coils through a switch section. The switch section is configured to switch a direct current to an output of the amplifier and supply to the source coils. In the source coil drive circuit section, a direct current resistance value detection section for measuring a direct current resistance value of the source coils by voltage drop when the switch section is supplying the direct current to the source coils is provided.