US4386346A
Expired / Lapsed
US
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Cursor controller
Assignee: International Business Machines Corp
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Filing: 1981-03-27
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Granted: 1983-05-31
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Expires: 2001-03-27
Abstract
Abstract A controller is provided for manually actuated movement of a cursor in an interactive display wherein overshoot in the positioning of the cursor when rapid movement is involved is compensated employing a factor involving the user's reaction time and the motion rate of the cursor.
Inventors
- 👤 James L. Levine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:22
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/048; G06F3/0487; G06F3/0489; G06F3/04892; G09; G09G; G09G5/00; G09G5/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
120 words
In a manually controllable device of the type wherein the position of an element proceeds at a rate in response to a first operator signal and the operation is terminated in response to a subsequent second operator signal, the improvement for providing an operator reaction compensated end point comprising: means for establishing a signal responsive to said rate; means for establishing a signal indicative of operator reaction time; means for producing an end point compensation adjustment signal based on the product of said operator reaction time signal and said rate signal; and means for establishing an end point position by applying said end point compensation adjustment signal negatively to the end point at the time of said second operator signal.
Claim 2
Dependent Claim
120 words
In a manually controllable device of the type wherein the position of an element proceeds at a rate in response to a first operator signal and the operation is terminated in response to a subsequent second operator signal, the improvement for providing an operator reaction compensated end point comprising: means for establishing a signal responsive to said rate; means for establishing a signal indicative of operator reaction time; means for producing an end point compensation adjustment signal based on the product of said operator reaction time signal and said rate signal; and means for establishing an end point position by applying said end point compensation adjustment signal negatively to the end point at the time of said second operator signal.
Claim 3
Dependent Claim
15 words
The device of claim 1 wherein said each signal is provided from an analog circuit.
Claim 4
Dependent Claim
67 words
The device of claim 1 wherein said rate responsive signal is derived from incremental steps through a first table in the memory of a microprocessor, each entry of said first table containing a time delay between movements of said element and said operator reaction time signal is derived incremental steps through a second table, each entry of said second table being a continuously corrected user reaction time.
Claim 5
Dependent Claim
69 words
In a display terminal of the type where depression of a key by an operator controls the speed and distance of cursor travel on a display, the improvement comprising: means for establishing a cursor motion rate; means for establishing operator reaction time; and means for negatively applying a backspacing signal to the cursor position for a number of spaces after release of said key determined by the expression: ##EQU5##
Claim 6
Dependent Claim
69 words
In a display terminal of the type where depression of a key by an operator controls the speed and distance of cursor travel on a display, the improvement comprising: means for establishing a cursor motion rate; means for establishing operator reaction time; and means for negatively applying a backspacing signal to the cursor position for a number of spaces after release of said key determined by the expression: ##EQU5##
Claim 7
Dependent Claim
16 words
The terminal of claim 4 wherein said improvement is applied to each axis of the display.
Claim 8
Dependent Claim
13 words
The terminal of claim 5 wherein said display is a cathode ray tube.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-30 | 1986-11-29 | 1987-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-30 | 1990-11-29 | 1991-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-30 | 1994-11-29 | 1995-05-31 | $7700.00 | Window Closed / Lapsed |