Apparatus and method for minimizing undesired cursor movement in a computer controlled display system
First Claim
1. A method of minimizing undesired cursor movement in a computer controlled display system, comprising the steps of:
- (a) providing a cursor control device capable of generating an electrical signal indicative of a position of said cursor control device;
(b) sampling at least two temporally spaced portions of said electrical signal, each of said portions being within a designated period of time, said period of time being a function of the predicted rate of movement of said cursor control device;
(c) comparing said at least two temporally spaced portions with each other and to an electrical signal previously sampled; and
(d) analyzing said comparisons for determining whether the cursor should be signaled to move on the display of said computer controlled display system.
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Accused Products
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.
37 Citations
32 Claims
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1. A method of minimizing undesired cursor movement in a computer controlled display system, comprising the steps of:
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(a) providing a cursor control device capable of generating an electrical signal indicative of a position of said cursor control device; (b) sampling at least two temporally spaced portions of said electrical signal, each of said portions being within a designated period of time, said period of time being a function of the predicted rate of movement of said cursor control device; (c) comparing said at least two temporally spaced portions with each other and to an electrical signal previously sampled; and (d) analyzing said comparisons for determining whether the cursor should be signaled to move on the display of said computer controlled display system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An apparatus for minimizing undesired cursor movement in a computer controlled display system, comprising:
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(a) a cursor control device capable of generating an electrical signal indicative of a position of said cursor control device; (b) means for sampling at least two temporally spaced portions of said electrical signal, each of said portions being within a designated period of time, said period of time being a function of the predicted rate of movement of said cursor control device; (c) means for comparing said at least two temporally spaced portions with each other and to an electrical signal previously sampled; and (d) means for analyzing said comparisons for determining whether the cursor should be signaled to move on the display of said computer controlled display system. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification