Title:
電子歩数計
Document Type and Number:
Japanese Patent JP4785348
Kind Code:
B2
Abstract:
To carry out step number measurement more precisely even when a walk signal enough to be detected is not obtained. After a fixed noise of a signal detected by an acceleration detecting portion having an acceleration sensor is removed by a filter portion of a counting portion, a walk cycle comparing portion compares a cycle of the resultant signal with a moving average value calculated by a walk cycle calculating portion, and each signal within a predetermined cycle range is counted as the number of steps for one step by a step number counting portion. A signal within a range similar to a cycle n times as large as a predetermined cycle of the signals each beyond the predetermined cycle range is judged as the number of steps for n steps by an extra-regulation step number processing portion and is counted as the number of steps for n steps by the step number counting portion. Data on the number of steps obtained through the counting in the step number counting portion is displayed on a display portion.
Inventors:
Tomoharu Tsuji
Application Number:
JP2004124640A
Publication Date:
October 05, 2011
Filing Date:
April 20, 2004
Export Citation:
Assignee:
Seiko Instruments Inc.
International Classes:
G06M3/00; G01C21/00; G01C22/00; G06M7/00
Domestic Patent References:
| JP2002360549A | ||||
| JP11002542A | ||||
| JP63262784A | ||||
| JP3066461U | ||||
| JP8184459A |
Attorney, Agent or Firm:
Kentaro Kuhara
Noriaki Uchino
Nobuyuki Kimura
Noriaki Uchino
Nobuyuki Kimura