Telegraphy – Systems – Position coordinate determination for writing
Patent
1985-03-01
1986-12-23
Schreyer, Stafford D.
Telegraphy
Systems
Position coordinate determination for writing
340784, G08C 2100
Patent
active
046313567
ABSTRACT:
A coordinate input device with a display has a tablet having two orthogonal position detecting sections each having elongated magnetic bodies and a plurality of exciting lines and a plurality of detecting lines which are arranged alternately such as to cross the magnetic bodies orthogonally thereto. These position detecting sections are superposed such that their magnetic bodies, exciting lines and detecting lines cross orthogonally. A tabular display is superposed on the tablet. The device further has a position appointing magnetism generator adapted for imparting local biases to the exciting lines of the position detecting sections. The exciting lines of the tablet are supplied with A.C. current of a predetermined frequency by a driving current source. A position detecting circuit is designed for detecting the corrdinate values of a position appointed by the position appointing magnetism generator through detection of voltage induced in the detecting lines in the tablet. The display is driven by a display control circuit. The operation of the above-mentioned constituents is controlled by a processor. With this arrangement, it is possible to input corrdinate data to the tablet by the position appointing magnetism generator with a high precision and by a simple operation from a remote position above the tablet, and the coordinate data or image information formed by these coordinate data can be visually checked directly on the display.
REFERENCES:
patent: 4205199 (1980-05-01), Mochizuki
Taguchi Yoshinori
Yamanami Tsuguya
Schreyer Stafford D.
Wacom Co. Ltd.
LandOfFree
Coordinate input device with display does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Coordinate input device with display, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coordinate input device with display will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-172511