Wave correction clock and control method of wave correction clock

A control method and power control technology, applied to radio-controlled timers, clocks, electric mechanical clocks, etc., can solve the problems of shortened battery life, inability to receive radio waves, and power consumption
CN1447198AInactive Publication Date: 2003-10-08SEIKO EPSON CORP
0 Cites 14 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SEIKO EPSON CORP
Publication Date
2003-10-08
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention seeks to provide a radio-controlled timepiece that can suppress unnecessary power consumption and improve energy conservation. <??>The radio-controlled timepiece has a reception unit power supply control means 43 for regularly operating a reception power supply circuit 24 that drives a reception circuit 22 for receiving a radio signal containing time information. The reception unit power supply control means 43 has a elapsed time detection means 110 for determining the elapsed time from the last time a signal was received, a reception schedule storage means 130 for storing schedule information for supplying power, a schedule information setting means 120 for changing the schedule information to schedule information B with a longer power supply time interval than a default setting A if the elapsed time becomes greater than or equal to a set time, and a power supply circuit control means 140 for controlling operation of the reception power supply circuit 24 based on the schedule information. Because the frequency of signal reception is reduced if the period in which signal reception is not possible increases, power consumption can be reduced. <IMAGE>
Need to check novelty before this filing date? Find Prior Art

Description

field of invention

[0001] The present invention relates to a radio wave corrected clock and a control method for the radio corrected clock. Background technique

[0002] Radio wave corrected clocks and watches are widely known (for example, refer to No. 2973303 Patent Publication

[0022] ~

[0027] ), and it corrects the time by receiving long-wave standard radio waves superimposed with time information. In addition to the compulsory reception function of this type of radio-corrected timepiece, that is, the function of forcibly receiving standard radio waves by the user operating the knob or button, it is usually also equipped with an automatic reception function, that is, whenever the set reception time is reached, it will be automatically received. Receive the standard radio wave accurately and correct the time.

[0003] However, for the timepieces corrected by radio waves, due to the surrounding electric field conditions, such as the influence of the magnetic field, or the ins...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More