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:
Jun. 28, 2005
Filed:
Jun. 22, 2001
Pierre-andré Farine, Neuchâtel, CH;
Jean-daniel Etienne, Les Geneveys-sur-Coffrane, CH;
Ruud Riem-vis, Neuchâtel, CH;
Elham Firouzi, Ligerz, CH;
Pierre-André Farine, Neuchâtel, CH;
Jean-Daniel Etienne, Les Geneveys-sur-Coffrane, CH;
Ruud Riem-Vis, Neuchâtel, CH;
Elham Firouzi, Ligerz, CH;
Asulab S.A., Marin, CH;
Abstract
A low power RF receiver () has an antenna (), a reception and shaping stage () for the radio-frequency signals provided by the antenna, a-channel correlation stage () receiving intermediate signals (IF) shaped by the reception stage (), and a microprocessor () connected to the correlation stage for calculating X, Y and Z position, velocity and time data as a function of data provided by the radio-frequency signals, such as GPS signals, transmitted by satellites. Each channel includes a correlator () associated with a controller (), which also includes a digital signal processing algorithm to allow all the synchronisation tasks for acquiring and tracking a satellite to be performed autonomously when the channel (') is set in operation, and to lock onto the satellite. Buffer registers () are placed at the interface between the correlation stage () and the microprocessor () for the mutual transfer of data. The low power RF receiver may be mounted in the case of a watch and powered by the energy accumulator or battery of the watch.