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:
Sep. 16, 2008
Filed:
May. 18, 2007
Giuseppe Saporito, Lausanne, CH;
Stéphane Claude, Grenchen, CH;
Christophe Germiquet, Prêles, CH;
ETA SA Manufacture Horlogère Suisse, Grenchen, CH;
Abstract
The present invention proposes a portable barometric altimeter () including a pressure sensor (), a calculation unit () which determines an altitude value (H) as a function of the pressure (P) measured by the sensor () and as a function of a reference temperature (T) corresponding to an estimate of the temperature of the air mass at sea level, and a time measuring unit () that supplies calendar data (D), characterized in that it includes a correction circuit (), which selects the reference temperature value (T) from among a series of values (T) contained in a database stored in the altimeter (), as a function of the date (D) and as a function of a predefined climate value (C). The invention also proposes a method of determining altitude (H).