Apparatus and method for minimizing undesired cursor movement in

Details Apparatus and method for minimizing undesired cursor movement in Apparatus and method for minimizing undesired cursor movement in

1989-06-08

1991-06-25

Oberley, Alvin E.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340709, 340710, G09G 508

Patent

active

050271091

ABSTRACT:
An apparatus and method of minimizing undesired cursor movement in a computer controlled display system are disclosed. A cursor control device capable of generating an electrical signal indicative of a position of the cursor control device is provided. At least two temporally spaced portions of the electrical signal are sampled. Each of the samples is taken within a designated period of time. The period of time designated is a function of the predicted rate of movement of the cursor control device. The sampled portions are compared with each other and to an electrical signal previously sampled. The comparisons are analyzed for determining whether the cursor should be signaled to move on the display of the computer controlled display system. Use of this digital logic hysteresis technique minimizes "jitter" of the cursor when the cursor control device is substantially stationary.

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patent: 4634859 (1987-01-01), Martell
patent: 4717883 (1988-01-01), Browning
patent: 4789836 (1988-12-01), May

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