Telegraphy – Systems – Position coordinate determination for writing
Patent
1992-02-06
1994-05-10
Kuntz, Curtis
Telegraphy
Systems
Position coordinate determination for writing
G08C 2100
Patent
active
053109686
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention pertains to a digitizing device for detecting individual points on a line, with a base plate for receiving a worksheet on which a line is drawn, a cross carriage formed of a carriage and a slider, which cross carriage is manually adjustable to individual points of the line over the base plate in the directions of the X and Y coordinates in order to adjust a final control element connected to the slider, with transmission elements between the cross carriage and position indicating members for determining the position of the final control element in relation to signal recorders, and with a release element that can be actuated manually to send the position data determined by the signal recorder to a circuit.
BACKGROUND OF THE INVENTION
In such a digitizing device, as has become known from, e.g., West German Patent No. DE-PS 19,43,217, the scanning element is moved manually in two mutually perpendicular coordinate directions over a defined curve path. At predetermined points on this curve path, coordinate signals, which correspond to the actual position of the scanning element, are generated automatically or manually via a release element. These signals are sent to a memory.
The prior-art digitizing devices have a highly sophisticated design and are therefore expensive.
SUMMARY AND OBJECTS OF THE INVENTION
It is an object of the present invention is to provide a digitizing device for detecting individual points on a line, with a base plate for receiving a worksheet on which a line is drawn, a cross carriage formed of a carriage and a slider, which cross carriage is manually adjustable to individual points of the line over the base plate in the directions of the X and Y coordinates in order to adjust a final control element connected to the slider, with transmission elements between the cross carriage and position indicating members for determining the position of the final control element in relation to signal recorders, and with a release element that can be actuated manually to send the position data determined by the signal recorder to a circuit wherein the arrangement has a compact design, is simple and portable, and is easy to operate.
According to the invention, a digitizing device is provided for detecting individual points of a continuous line. The device includes a base plate for receiving a worksheet on which the continuous line is drawn and the device includes a cross slide including a carriage and a slider and which is adjustable in X and Y coordinate directions for manually adjusting an adjusting member connected to the slide to individual points of the continuous line over the base plate. Transmission elements are provided between the cross line and the position-indicating elements for determining the position of the adjusting member in relation to signal sensors. A releasing element that can be operated manually for sending the position data determined by the signal sensors to a circuit is also provided. A guide between the carriage and the housing of the digitizing devices provided with two horizontally extending guideways for three roller bearings connected to the carriage. The guideway has a V-shaped running track that is open at the top. Roller bearings connected to the carriage are designed as simple support rollers of which two support rollers are mounted obliquely at an angle and are associated with the V-shaped guideway while the third support roller is associated with the other guideway.
Despite a simple design, the arrangement according to the present invention leads to a clearance-free connection between the final control element carrying the cross hairs, the cross carriage, and the film strip, so that the coordinate points to be recorded from the worksheet can be detected reproducibly by the signal recorder.
The feature of the invention including providing the horizontal guideway as part of a running rail of a truncated cone-shaped cross section, whose lateral surface is used to guide a correspondingly designed groove in the carriag
REFERENCES:
patent: 3347986 (1967-10-01), Gilbert
patent: 3636256 (1972-01-01), Cameron
patent: 4575581 (1986-03-01), Landberg
patent: 4916740 (1990-04-01), Nada et al.
Kuntz Curtis
Loomis Paul
Pfaff Haushaltmaschinen GmbH
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