EP 1141788 B1 20090325 - WATCH PROVIDING BAROMETER AND ALTIMETER READING, AND METHOD FOR MAKING SAME
Title (en)
WATCH PROVIDING BAROMETER AND ALTIMETER READING, AND METHOD FOR MAKING SAME
Title (de)
UHR MIT BAROMETER ODER HÖHENANZEIGE UND VERFAHREN ZU IHRER HERSTELLUNG
Title (fr)
MONTRE FOURNISSANT UNE INDICATION BAROMETRIQUE OU ALTIMETRIQUE, ET SON PROCEDE DE FABRICATION
Publication
Application
Priority
- EP 99962265 A 19991222
- EP 9910317 W 19991222
- EP 98124577 A 19981223
Abstract (en)
[origin: WO0039644A1] The invention concerns a wristwatch comprising in its case a resistive piezoelectric pressure and temperature sensor (26) exposed to a pressure chamber (42) communicating with the outside environment, for measuring ambient pressure. In order to provide individual calibration depending on temperature followed by a permanent correction of the sensor pressure signals, the latter is fixed to the lower surface of a printed circuit card (30) bearing the electronic circuits (35) processing the sensor signals. The calibration parameters are recorded in a non-volatile memory (36) of said circuits. A rigid and sealed separating partition (43) forms an internal floor separating the pressure chamber (42) from the watch sealed part.
IPC 8 full level
G04G 99/00 (2010.01); G04C 3/00 (2006.01); G04G 17/08 (2006.01); G04G 21/02 (2010.01); B63C 11/02 (2006.01)
CPC (source: EP US)
G04C 17/0091 (2013.01 - EP US); G04G 21/02 (2013.01 - EP US); B63C 11/02 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB IT LI
DOCDB simple family (publication)
WO 0039644 A1 20000706; CN 1145861 C 20040414; CN 1335948 A 20020213; CN 1525269 A 20040901; DE 69940644 D1 20090507; EP 1141788 A1 20011010; EP 1141788 B1 20090325; HK 1044052 A1 20021004; HK 1044052 B 20050204; JP 2002533733 A 20021008; JP 4594531 B2 20101208; US 2004160859 A1 20040819; US 6754137 B1 20040622
DOCDB simple family (application)
EP 9910317 W 19991222; CN 200410005475 A 19991222; CN 99816321 A 19991222; DE 69940644 T 19991222; EP 99962265 A 19991222; HK 02105607 A 20020730; JP 2000591480 A 19991222; US 78068204 A 20040219; US 86901901 A 20010622