초록 ▼

The combination of a mounting post base, a first accessory that is removably mountable in an operative position to the mounting post base to perform a first function, and a second accessory that is removably mountable in an operative position to the mounting post base in place of the first accessory

The combination of a mounting post base, a first accessory that is removably mountable in an operative position to the mounting post base to perform a first function, and a second accessory that is removably mountable in an operative position to the mounting post base in place of the first accessory to perform a second function. The first and second accessories can be selectively mounted to the mounting post base, one in place of the other, to perform a desired function.

대표청구항 ▼

The combination of a mounting post base, a first accessory that is removably mountable in an operative position to the mounting post base to perform a first function, and a second accessory that is removably mountable in an operative position to the mounting post base in place of the first accessory

The combination of a mounting post base, a first accessory that is removably mountable in an operative position to the mounting post base to perform a first function, and a second accessory that is removably mountable in an operative position to the mounting post base in place of the first accessory to perform a second function. The first and second accessories can be selectively mounted to the mounting post base, one in place of the other, to perform a desired function. c compass system comprising: a magneto-responsive sensor assembly for sensing a magnetic field including an earth magnetic field and a deviating magnetic field; an electronic circuit responsive to said sensor assembly for determining at least one of a magnitude and direction of the Earth magnetic field, said electronic circuit collecting a plurality of data points along the earth magnetic field relative to a coordinate system associated with the vehicle, each of said data points having at least two components relative to said coordinate system, said electronic circuit averaging at least one component of at least two of said data points to determine an estimated value of the Earth magnetic field along at least one axis of said coordinate system, thereby calculating an estimated offset of the Earth magnetic field due to the deviating magnetic field, said electronic circuit adjusting a directional heading output to account for the offset; and an electronic display coupled with said electronic circuit for displaying a direction of the Earth magnetic field; wherein said at least two data points are located at intersect points where said line segments intersect at said coordinate system at a value equal to a portion of the Earth magnetic field magnitude. 2. The vehicular compass system of claim 1, wherein said at least two data points have substantially equal values for one ordinate on the coordinate system, the other ordinate values are averaged to determine said estimated offset for one of the x and y ordinates for the Earth magnetic field. 3. The vehicular compass system of claim 1, wherein said value is approximately one-half of the Earth magnetic field magnitude. 4. The vehicular compass system of claim 1, wherein said at least two data points are located at an intersect point of two line segments which intersect one another at substantially equal coordinates of said coordinate system. 5. The vehicular compass system in claim 4, wherein said substantially equal coordinates are approximately one-half of the Earth magnetic field magnitude. 6. The vehicular compass system of claim 1, wherein said at least two data points are located at a plurality of octant switch points, where the compass switches from one directional reading to another. 7. The vehicular compass system of claim 1, wherein said sensor assembly comprises first and second sensors oriented in a predetermined angular relationship with each other and in a predetermined orientation with respect to the vehicle. 8. The vehicular compass system in claim 1, wherein said sensor assembly comprises one of a magneto-inductive sensor, a magneto-resistive sensor and a flux gate sensor. 9. The vehicular compass system in claim 1, wherein said sensor assembly comprises a magneto-resistive sensor. 10. The vehicular compass system in claim 1, wherein said electronic circuit calculates another estimated offset of the Earth magnetic field due to the deviating magnetic field and compares said estimated offset with said another estimated offset in order to confirm validity of said estimated offset. 11. The vehicular compass system in claim 10, wherein said electronic circuit collects additional data points and calculates a new estimated offset if said estimated offset is not valid. 12. A vehicular electronic compass system comprising: a magneto-responsive sensor assembly for sensing a magnetic field including an earth magnetic field and a deviating magnetic field; an electronic circuit responsive to said sensor assembly for determining at least one of a magnitude and direction of the Earth magnetic field, said electronic circuit collecting a plurality of data points along the earth magnetic field relative to a coordinate system associated with the vehicle, each of said data points having at least two components relative to said coordinate system, said electronic circuit averaging at least one component of at least two of said data points to determine an estimated value of the