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.

Date of Patent:
Dec. 15, 2020

Filed:

Sep. 19, 2018
Applicant:

Casio Computer Co., Ltd., Tokyo, JP;

Inventors:

Takeshi Matsue, Kokubunji, JP;

Tatsuya Sekitsuka, Kunitachi, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S 19/47 (2010.01); G01S 19/40 (2010.01); G01S 19/49 (2010.01); G01S 19/28 (2010.01); G01C 21/16 (2006.01); G01S 19/52 (2010.01);
U.S. Cl.
CPC ...
G01S 19/47 (2013.01); G01C 21/165 (2013.01); G01S 19/28 (2013.01); G01S 19/40 (2013.01); G01S 19/49 (2013.01); G01S 19/52 (2013.01);
Abstract

A moving state determining device includes a receiver receiving radiowaves from a positioning satellite and a processor. The processor determines a moving state of a satellite radiowave receiving unit based on a motion state measured by a sensor which measures a motion state, and performs a positioning operation based on information received by the receiver to obtain a current position and an error range thereof. In determining the moving state, a positioning operation result obtained when the error range satisfies a predetermined accuracy standard can be used. The error range is calculated based on a positioning accuracy and a deviation of the obtained current position and a predicted position calculated in accordance with the moving state. The positioning accuracy is obtained by combining each position of positioning satellites from which radiowaves are received and each receiving state of the radiowaves.


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