Title:
Portable apparatus
Document Type and Number:
Japanese Patent JP6003284
Kind Code:
B2
Abstract:
A portable device includes an acceleration sensor capable of detecting accelerations in three-axis directions. When a GPS radio wave is receivable by a GPS module, the portable device stores, using an MCU, a correlation between a body vibration frequency detected by the acceleration sensor and speed information grasped by processing a signal included in the GPS radio wave in a flash ROM. When a reception state of the GPS radio wave does not satisfy a predetermined standard, the portable device estimates running speed using the MCU on the basis of the body vibration frequency detected by the acceleration sensor 38 and the correlation stored in the flash ROM.
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Inventors:
Eiji Miyasaka
Kazuto Mogami
Takahiro Kunishige
Kazuto Mogami
Takahiro Kunishige
Application Number:
JP2012140310A
Publication Date:
October 05, 2016
Filing Date:
June 22, 2012
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
G01C22/00; G01P3/54; G01S19/19; G01S19/52
Domestic Patent References:
| JP2007093433A | ||||
| JP2008171347A | ||||
| JP2006118909A |
Foreign References:
| US5583776 |
Attorney, Agent or Firm:
Akira Obayashi
Taro Takahashi
Taro Takahashi