Electronic compass
AssigneeCasio Computer Co., Ltd.
InventorHiroshi Sato
Life of this patent
Estimating the term…
Abstract
An electronic compass can store azimuth data of points to be passed by a user in a plurality of registers, and the stored azimuth data are sequentially displayed on a display device every time an external operation switch is operated. The compass includes a magnetic sensor for detecting a geomagnetism, thereby obtaining north azimuth data on the earth. The north azimuth data obtained by the magentic sensor is displayed simultaneously with the stored azimuth data. Therefore, the user can know at each point a direction to go on the basis of the two displayed azimuth data, i.e., the stored azimuth data, and the north azimuth data on the earth.
Claims25
An electronic compass comprising:
- azimuth indication means for indicating directions of all azimuths;
- specifying means for specifying a particular azimuth of all azimuths which can be specified by the specifying means;
- azimuth detection means for detecting a predetermined azimuth on the earth;
- azimuth data storage means for storing a plurality of azimuth data measured with respect to the predetermined azimuth on the earth;
- read switch means for sequentially reading out the plurality of azimuth data stored in said aid azimuth data storage means;
- and
- azimuth data display control means for simultaneously displaying the predetermined azimuth detected by said azimuth detection means, and an azimuth angled by a degree corresponding to the azimuth data read out by said read switch means with respect to the particular azimuth specified by said specifying means, on the azimuth indication means.
An electronic compass comprising:
- an equipment case including a specific direction indication section for specifying a particular direction;
- a large number of dot type display members arranged in said equipment case, each of which can specify directions of all azimuths;
- azimuth detecting means for detecting a predetermined azimuth on the earth;
- angle data storage means for storing a plurality of angle data each data measured with respect to said particular direction;
- read switch means for sequentially reading out the plurality of angle data stored in said angle data storage means;
- and
- azimuth data display control means for simultaneously displaying the predetermined azimuth detected by said azimuth detecting means, and an azimuth angled by a degree corresponding to the angle data read out by said read switch means with respect to the particular direction, on said dot type display members.
A wristwatch type electronic compass comprising:
- a wristwatch type equipment case worn on a wrist;
- indication means for indicating a direction of 12 o'clock on said wristwatch type equipment case;
- azimuth angle value indication means for indicating azimuth angle values to have the direction of 12 o'clock indicated by said indication means as 0.degree. ;
- azimuth indication means arranged in correspondence with the azimuth angle values indicated by said azimuth angle value indication means;
- azimuth data input means for inputting azimuth data;
- azimuth data storage means for storing the azimuth data input by said azimuth data input means;
- azimuth detection means for detecting a predetermined azimuth on the earth;
- and
- azimuth data indication control means for causing said azimuth indication means to simultaneously indicate the predetermined azimuth detected by said azimuth detection means and the azimuth data stored in said azimuth data storage means.
Dependencies are inferred from the claim text.