Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Patent
1997-04-08
2000-02-15
Brier, Jeffery
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
345134, 345145, 324121R, G09G 508, G09G 536, G01R 1320
Patent
active
060258330
ABSTRACT:
The method and apparatus of the present invention vary the rate of movement of a marker along a waveform. The rate of movement is varied by changing the distance increment the marker moves in response to a movement command. In a first embodiment of the invention the marker movement increment is proportional to the reciprocal of the derivative of the waveform amplitude with respect to time. In a second embodiment the marker moves only to specified points of interest along the waveform which are calculated in real-time. In a third embodiment the increment depends on how long the input device has been activated. In a fourth embodiment the marker movement is interrupted when the marker steps onto or over a detent. Each embodiment of the present invention moves the marker along the waveform in a manner which improves the ability of the user to examine information of interest in detail while moving rapidly over information that is not of interest.
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Bell Paul A.
Brier Jeffery
Hewlett--Packard Company
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