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:
May. 19, 1998
Filed:
Jun. 27, 1997
Kazuya Mitaki, Tachikawa, JP;
Citizen Watch Co., Ltd., Tokyo, JP;
Abstract
The present invention is aimed to propose a method for minimizing erroneous shift to a water depth measurement mode by judging whether shift to a water depth measurement mode is caused by normal operation or erroneous detection and for automatically getting out of the water depth measurement mode even in the case of erroneous shift to the water depth measurement mode. Instantaneous shift to a water depth measurement mode is prevented when the water depth judging circuit 5 judges that a water depth value Ddpt from the measurement arithmetic processing circuit exceeds a predetermined value and that the water detection switch 6 detects no water contact, and a time information display mode is automatically returned even in the case of erroneous shift to a water depth measurement mode. Instantaneous shift to a water depth measurement mode is prevented when the water detection switch is on under conditions other than diving, and an original mode is automatically returned by judging the situation precisely even in the case of unexpected shift to a water depth measurement mode.