Coordinate data generating apparatus

Details Coordinate data generating apparatus Coordinate data generating apparatus

1992-10-02

1994-02-15

Weldon, Ulysses

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

345164, 345157, G09G 302

Patent

active

052871207

ABSTRACT:
An X-axis counter (101) and a Y-axis counter (102) detect velocities of the movement of a mouse in X-axis and Y-axis directions, respectively. A comparator (103) detects which of the velocities of the movement of the mouse in the X-axis and Y-axis directions is higher. An X-axis displacement amount correction data ROM (106) and a Y-axis displacement amount correction data ROM (107) correct a detection result by the X-axis counter (101) and a detection result by the Y-axis counter (102) with the same correction rate based upon detection results by the comparator (103) to output displacements in the X-axis and Y-axis directions.

REFERENCES:
patent: 4624537 (1986-11-01), Hanssen et al.
patent: 4734685 (1988-03-01), Watanable
patent: 4912672 (1990-03-01), Giorgio
60-160429A p. 148, Jan. 8, 1986, vol. 10, No. 3.
62-236025A p. 685, Apr. 6, 1988, vol. 12, No. 104.
63-316120A p. 857, Apr. 17, 1989, vol. 13, No. 157.
60-117324A p. 401, Oct. 30, 1985, vol. 9, No. 274.
61-131116A p. 512, Nov. 5, 1986, vol. 10, No. 324.

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