US6407749B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined scroll and zoom method and apparatus
Assignee: Individual
•
Filing: 2000-08-03
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Granted: 2002-06-18
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Expires: 2020-08-03
Abstract
Abstract Method and apparatus for simultaneously scrolling and zooming graphic data in a display device in response to pointing device action by user. The system alternates between zooming in and zooming out at preset rates in response to successive user actuations of a unique button set on the pointing device. While the button set remains actuated the pointing device acts to pan the viewport.
Inventors
- 👤 John H. Duke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:45
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/048; G06F3/0481; G06F3/0484; G06F3/0485; G09; G09G; G09G5/00; G09G5/14; G06F2203/00; G06F2203/048; G06F2203/04806; G09G2340/00; G09G2340/04; G09G2340/0407; G09G2340/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
277 words
A method for combining zoom and scroll functions on a data processing system, said data processing system including a central processing unit, an elapsed time measurement means, a pointing device, a button set, a memory containing a means to store graphic user data, a zoom in factor designating increase in scale per unit of time further contained in said memory, a zoom out factor designating decrease in scale per unit of time further contained in said memory, a zoom toggle further contained in said memory designating either a zoom in state or a zoom out state, a display device, and a viewport contained in said display device displaying a portion of said user data, the method forming a programmed display function and comprising the steps of: determining if said button set is actuated; determine state of said zoom toggle; if said zoom toggle is in said zoom in state, calculate change of scale of said viewport using said zoom in factor and said measurement of elapsed time during actuation of said button set; if said zoom toggle is in said zoom out state, calculate change of scale of said viewport using said zoom out factor and said measurement of elapsed time during actuation of said button set; determine change of position of said pointing device during actuation of said button set; calculate change of position of said viewport with respect to said graphic user data proportional to said change of position of said pointing device; display said viewport using said viewport scale change and said viewport position change, and; if said button set changes from being activated to being disactivated reverse the state of said zoom toggle.
Claim 2
Independent Claim
277 words
A method for combining zoom and scroll functions on a data processing system, said data processing system including a central processing unit, an elapsed time measurement means, a pointing device, a button set, a memory containing a means to store graphic user data, a zoom in factor designating increase in scale per unit of time further contained in said memory, a zoom out factor designating decrease in scale per unit of time further contained in said memory, a zoom toggle further contained in said memory designating either a zoom in state or a zoom out state, a display device, and a viewport contained in said display device displaying a portion of said user data, the method forming a programmed display function and comprising the steps of: determining if said button set is actuated; determine state of said zoom toggle; if said zoom toggle is in said zoom in state, calculate change of scale of said viewport using said zoom in factor and said measurement of elapsed time during actuation of said button set; if said zoom toggle is in said zoom out state, calculate change of scale of said viewport using said zoom out factor and said measurement of elapsed time during actuation of said button set; determine change of position of said pointing device during actuation of said button set; calculate change of position of said viewport with respect to said graphic user data proportional to said change of position of said pointing device; display said viewport using said viewport scale change and said viewport position change, and; if said button set changes from being activated to being disactivated reverse the state of said zoom toggle.
References Cited (Backward Citations)
US5615384A
Cited
US5867158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-06-17 | 2005-12-17 | 2006-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-06-17 | 2009-12-17 | 2010-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-06-17 | 2013-12-17 | 2014-06-18 | $7700.00 | Window Closed / Lapsed |