Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Patent
1995-05-10
1998-08-11
Mengistu, Amare
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
345145, G09G 500
Patent
active
057933545
ABSTRACT:
There is provided a method and apparatus for an improved computer pointing device. The present invention facilitates positioning the computer cursor and includes a pointing device for providing coordinate input signals and a gain control device for providing gain signals, wherein gain is defeined as the ratio of the cursor movement along the y-axis and x-axis relative to the corresponding amount movement of the pointing device along the y-axis and x-axis. The coordinate input signals and gain signals are received by a processor. The processor is operative to execute a program that scales the coordinate input signals as a function of a gain value determined from the gain signal. The processor then outputs the scaled coordinate input signals in a form simulating a mouse output. The pointing device can be any computer peripheral device capable of providing coordinate input signals indicating an amount of movement along the y-axis and x-axis. The gain control device is any device capable of providing gain signals to a processor. One embodiment of the gain control device includes a variable resistor to manipulate the magnitude of the gain signal. The gain control device can also include an analog/digital converter for converting the gain signal into digital form and a buffer amplifier for providing a low impedance input from the variable resistor to the analog/digital converter. Preferably the gain signals emanating from the gain control device is manipulable by a foot pedal mechanism.
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"Isotrak II" Polhemus, pp. 1-3, Sep. 1996.
Lucent Technologies - Inc.
Mengistu Amare
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