Blended transfer function for computer pointing devices

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

2007-08-10

2011-11-01

Wang, Quan-Zhen (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

Reexamination Certificate

active

08049733

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.

REFERENCES:
patent: 5825308 (1998-10-01), Rosenberg
patent: 5880717 (1999-03-01), Chan et al.
patent: 7348965 (2008-03-01), Itoh
patent: 2004/0108992 (2004-06-01), Rosenberg

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