Title:
POSITIONING METHOD AND DEVICE, AND SMARTWATCH
Document Type and Number:
WIPO Patent Application WO/2019/134104
Kind Code:
A1
Abstract:
Disclosed are a positioning method and device and a smartwatch. The method comprises the following steps: detecting whether a positioning signal of a satellite-based positioning system is normal; if the positioning signal is abnormal, acquiring position offset data via a PDR unit; and calculating current positioning data according to recent valid positioning data and the position offset data. In an environment where the positioning signal of the satellite-based positioning system is weak, satellite positioning is replaced by PDR positioning to allow the smartwatch to perform accurate positioning even in harsh environments, thereby solving the technical problem that smartwatches are unable to perform positioning or perform positioning inaccurately in environments where positioning signals are weak, effectively improving integrity and accuracy of a positioning path of a smartwatch. In addition, during PDR-based positioning, a working frequency of the satellite-based positioning system is reduced to avoid unneeded power consumption, greatly reducing the power consumption of the smartwatch and extending standby time.
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Inventors:
DU LAIZHU (CN)
Application Number:
PCT/CN2018/071487
Publication Date:
July 11, 2019
Filing Date:
January 05, 2018
Export Citation:
Assignee:
SHENZHEN WATER WORLD CO LTD (CN)
International Classes:
G01S19/48
Foreign References:
| CN108333612A | 2018-07-27 | |||
| CN104076379A | 2014-10-01 | |||
| CN101571400A | 2009-11-04 | |||
| CN101620271A | 2010-01-06 | |||
| CN101762805A | 2010-06-30 | |||
| CN102901505A | 2013-01-30 |
Attorney, Agent or Firm:
SHENZHEN MINGRIJINDIAN INTELLECTUAL PROPERTY AGENCY FIRM (GENERAL) (CN)
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