Blended transfer function for computer pointing devices

Details Blended transfer function for computer pointing devices Blended transfer function for computer pointing devices

2007-09-25

2007-09-25

Hjerpe, Richard (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

C345S163000

Reexamination Certificate

active

10831758

ABSTRACT:
A transfer function is provided for use with computer pointing devices such as trackpads. The transfer function includes a first component having characteristics of a positional transfer function and a second component having characteristics of a velocity-based transfer function. The first (positional) component and the second (velocity-based) component of the transfer function are blended so that the transfer function exhibits purely positional behavior in response to a first range of inputs and exhibits combined positional and velocity-based behavior in response to a second range of inputs. The first range of inputs may, for example, correspond to a region in the input coordinate space that is bounded by a circle having a predetermined threshold radius.

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Anant Kartik Mithal, Using Psychomotor Models of Movement in the Analysis and Design of Copmuter Pointing Devices, May 7-11, 1995, 2 Pgs, http://www.acm.org/sigchi/chi95/Elect.

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