Boots – shoes – and leggings
Patent
1983-01-25
1985-04-09
Zache, Raulfe B.
Boots, shoes, and leggings
364521, G06F 1520
Patent
active
045105685
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to a graphic processing method. More particularly, the invention relates to a graphic processing method in a system where a host computer is provided with an input of graphic data obtained by the execution of predetermined graphic processing, or in a system in which graphic data is received from a host computer, predetermined graphic processing is executed using the graphic data, and the obtained graphic is drawn.
Tablets and digitizers are widely known as graphic input devices for the entry of graphics into a computer. A graphic input device has the ability to sense coordinate values, specifically by sensing a position on a surface designated by, e.g., a stylus pen or cursor and entering the position into a host computer (host device) in the form of planar coordinate data (coordinates values in the XY plane, by way of example). Thus, a graphic input device senses, as point data, the coordinates of each point designated by a pen and sends a group of these items of point data to a host computer.
Thus, the data fed into the host computer in this fashion is point data and not graphic data indicative of straight lines and arcs. Even though the input data is point data, the data handled by the host computer is dealt with internally thereof not only as point data but also as straight lines (line segments), circles (circular arcs) or curves obtained by connecting these points, segments or arcs. The ultimate purpose of the host computer, moreover, is not to generate these straight lines, circles and curve data (graphic data) but to prepare an NC tape, create a three-dimensional curved surface or design mechanical parts on the basis of the generated graphic data, and to execute processing for attaining the particular purpose.
In the conventional arrangements, a host computer must be made to bear an extremely heavy load in order to take the step of entering point data into the host computer, generating graphic data from the point data and then executing processing for the final objective on the basis of these items of graphic data.
Accordingly, a method has been proposed wherein a graphic input device is provided with an intelligence function so that graphic data may be generated from point data by the graphic input device and sent to the host computer. Specifically, the method involves constructing the control and processing units of the graphic input device from a microcomputer or the like and executing the processing for graphic data creation on the terminal side. With a graphic input device having the above-described intelligence function, however, it is possible to execute only specific processing that is based on the program stored in the read-only memory (ROM) incorporated within the device. In other words, the graphic input device cannot be made to perform processing other than that specified. For instance, though the input device may have the ability to generate graphic data (line segments, circular arcs, curve data) from point data, the device cannot recognize characters from point data and transmit the characters to the host computer, cannot recognize alpha-numerics written by a pen and transmit the alphanumerics to the host computer, cannot attach the sense of circular arcs and straight lines or other optional functions to the abovementioned graphic data, and cannot create various data in accordance with the processing objective of the host computer. If it is attempted to force these functions upon the graphic input device, then it will be necessary to either replace the present ROM with a ROM for storing the desired processing program, or provide a ROM of large capacity, store various processing programs in the ROM and execute processing upon selecting the ROM prescribed for the particular objective. The former expedient is undesirable, however, because replacing the ROM is a troublesome task and ROMs storing the various processing programs must be prepared beforehand. The latter expedient entails a ROM of large capacity and raises cost. Overall system
REFERENCES:
patent: 3887903 (1975-06-01), Martell
patent: 3906197 (1975-09-01), Grover
patent: 4451895 (1984-05-01), Sliwkowski
Kishi Hajimu
Seki Masaki
Fanuc Ltd.
Zache Raulfe B.
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