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:
Aug. 13, 2002
Filed:
Sep. 09, 1999
Akira Taniguchi, Hachioji, JP;
Chieko Aizawa, Hachioji, JP;
Yasuhiro Yoshizawa, Hachioji, JP;
Fumiyuki Onoda, Tama, JP;
Seiki Toriyama, Hino, JP;
Takeshi Kawabata, Sagamihara, JP;
Katsuyoshi Sasagawa, Hino, JP;
Sumihiro Uchimura, Sagamihara, JP;
Masanao Hara, Hino, JP;
Kazutaka Tsuji, Hachioji, JP;
Takayasu Miyagi, Hachioji, JP;
Hiroki Moriyama, Akishima, JP;
Hiroshi Ishii, Hino, JP;
Yoshinao Oaki, Hino, JP;
Tsugio Okazaki, Aizuwakamatsu, JP;
Jun Hasegawa, Hino, JP;
Yasuo Hirata, Hachioji, JP;
Olympus Optical Co., Ltd., , JP;
Abstract
A source coil line-break/short-circuit detecting circuit and a probe connection detecting circuit are provided to the source coil driving circuit unit of an endoscope shape detecting apparatus. The source coil line-break/short-circuit detecting circuit detects line-breaks and short-circuits of the source coils. The probe connection detecting circuit detects whether a connection exists with a probe. A marker coil line-break/short-circuit detecting circuit detects line-breaks and short-circuits of the marker coils. A marker connection detecting circuit detects whether a connection exists with a marker. Accordingly, using the apparatus without being connected to a probe or markers can be avoided by detecting the connection of the probe and markers by the probe connection detecting circuit and marker connection detecting circuit, respectively, when the system is energized, thereby avoiding detecting noise and consequently displaying a random image on the monitor.