Correcting mechanism of electronic azimuth meter, electronic azimuth meter having thereof and electronic time piece with electronic azimuth meter
First Claim
1. A correcting mechanism of an electronic azimuth meter comprising:
- a correcting mechanism of an electronic azimuth meter having an X-direction magnetic sensor and a Y-direction magnetic sensor for detecting intensities of a magnetic field in two orthogonal directions X and Y and constituted to calculate an azimuth from magnetic field detecting values of the X- and the Y-direction magnetic sensors;
storing means for storing respectives of a maximum value and a minimum value with regard to the magnetic field detecting value by each of the X-direction and the Y-direction magnetic sensors;
updating means for updating the maximum value or the minimum value to a newly detected magnetic field detecting value when the magnetic field value which is newly detected by each of the X-direction and the Y-direction magnetic sensors is larger than the maximum value stored in the storing means or smaller than the minimum value stored therein;
azimuth change inducing means for providing a display of inducing a continuous change of the azimuth of an electronic azimuth meter main body over a range larger than 360 degree;
predicting means for predicting that the maximum value or the minimum value in the X- or Y-direction is a true value when each of the maximum values and the minimum values of the magnetic field detecting values in the X-direction and the Y-direction is not updated during a predetermined time period in accordance with rotation of the electronic azimuth meter main body in accordance with an induction display of the azimuth change inducing means and canceling a prediction indicating the true value when the maximum value or the minimum value predicted to be the true value is updated by the updating means; and
stop control means for stopping an updating processing by the updating means when all of the maximum values and the minimum values in the X-direction and the Y-direction are predicted to be the true values and induction by induction display of the azimuth change inducing means reaches 360 degree or more.
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Accused Products
Abstract
A correcting mechanism of an electronic azimuth meter includes a storing unit for storing maximum values and minimum values with regard to magnetic field detecting values by X- and Y-direction magnetic sensors, an updating unit for updating the magnetic field detecting values when newly detected magnetic field detecting values exceed maximum values/minimum values of the storing unit, an azimuth change inducing unit for providing display for inducing continuous change of azimuth of an electronic azimuth meter main body in a range larger than 360 degree, a predicting unit for predicting whether maximum value/minimum value are true when maximum/minimum magnetic field detecting values are not updated during a predetermined time period even by rotating the azimuth meter main body in accordance with induction display and canceling true prediction when maximum value/minimum value are updated and a stop control unit for stopping updating processing when all of maximum values/minimum values in X- and Y-directions are predicted to be true and induction by inducting display reaches 360 degree or more.
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Citations
15 Claims
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1. A correcting mechanism of an electronic azimuth meter comprising:
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a correcting mechanism of an electronic azimuth meter having an X-direction magnetic sensor and a Y-direction magnetic sensor for detecting intensities of a magnetic field in two orthogonal directions X and Y and constituted to calculate an azimuth from magnetic field detecting values of the X- and the Y-direction magnetic sensors;
storing means for storing respectives of a maximum value and a minimum value with regard to the magnetic field detecting value by each of the X-direction and the Y-direction magnetic sensors;
updating means for updating the maximum value or the minimum value to a newly detected magnetic field detecting value when the magnetic field value which is newly detected by each of the X-direction and the Y-direction magnetic sensors is larger than the maximum value stored in the storing means or smaller than the minimum value stored therein;
azimuth change inducing means for providing a display of inducing a continuous change of the azimuth of an electronic azimuth meter main body over a range larger than 360 degree;
predicting means for predicting that the maximum value or the minimum value in the X- or Y-direction is a true value when each of the maximum values and the minimum values of the magnetic field detecting values in the X-direction and the Y-direction is not updated during a predetermined time period in accordance with rotation of the electronic azimuth meter main body in accordance with an induction display of the azimuth change inducing means and canceling a prediction indicating the true value when the maximum value or the minimum value predicted to be the true value is updated by the updating means; and
stop control means for stopping an updating processing by the updating means when all of the maximum values and the minimum values in the X-direction and the Y-direction are predicted to be the true values and induction by induction display of the azimuth change inducing means reaches 360 degree or more. - View Dependent Claims (4, 6, 9, 11, 14)
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2. A correcting mechanism of an electronic azimuth meter comprising:
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a correcting mechanism of an electronic azimuth meter having an X-direction magnetic sensor and a Y-direction magnetic sensor for detecting intensities of a magnetic field in two orthogonal directions X and Y; and
azimuth change inducing means for inducing a continuous change of an azimuth of an electronic azimuth meter main body;
wherein the azimuth change inducing means is constituted to provide an induction display over a range larger than 360 degree. - View Dependent Claims (3, 5, 7, 8, 10, 12, 13, 15)
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Specification