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Title:
RADIO CONTROLLED CLOCK, ELECTRONIC DEVICE, METHOD FOR CONTROLLING RADIO CONTROLLED CLOCK, AND PROGRAM FOR CONTROLLING RECEPTION OF RADIO CONTROLLED CLOCK
Document Type and Number:
WIPO Patent Application WO/2005/031475
Kind Code:
A1
Abstract:
There is movement status detecting means (5) that includes an electric power generation detecting circuit (51) for detecting the voltage of an electric power from electric power generating means (4) and that also includes a determining part (52) for determining, from the voltage of the generated electric power from the electric power generation detecting circuit (51), whether a radio controlled clock (1) is moving. When the movement status detecting means (5) outputs a non-movement detecting signal indicative of no movement of the radio controlled clock (1), a reception part (2) is activated to receive a standard radio wave so as to correct the time displayed on time displaying means (3). Since the standard radio wave is received during no movement of the radio controlled clock (1), precise time information can be acquired and further the probability of successful reception can be improved, whereby the reliability of reception of the standard radio wave can be improved.

Inventors:
NAKAMURA HIDENORI
Application Number:
PCT/JP2004/014345
Publication Date:
April 07, 2005
Filing Date:
September 30, 2004
Export Citation:
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Assignee:
SEIKO EPSON CORP (JP)
International Classes:
G04G21/04; G04R20/08; (IPC1-7): G04G5/00; G04C9/02
Domestic Patent References:
WO1999027423A11999-06-03
Foreign References:
JPH07198876A1995-08-01
JP2003139875A2003-05-14
JP2002139586A2002-05-17
Other References:
See also references of EP 1669818A4
None
Attorney, Agent or Firm:
Kinoshita, Jitsuzo (Ogikubo TM building 26-13, Ogikubo 5-chom, Suginami-ku Tokyo 51, JP)
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