Trackball for touch sensor
AssigneeAdvanced Silicon SA
InventorsHussein BALLAN, Kevin FINE, Marc PASTRE
Life of this patent
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Abstract
System comprising a touch sensor, a trackball and a trackball detector, wherein the trackball comprises a support structure and a ball and is arranged on the touch sensor such that the ball is rotatably supported over the touch sensor surface, wherein a surface of the ball comprises a pattern of detection portions, wherein the touch sensor is configured to detect a position of a touch of an object on a touch sensor surface of the touch sensor, wherein the trackball detector is configured to detect the rotational movement and/or the rotational orientation of the ball on the basis of a movement and/or a position of at least one of the detection portions detected on the touch sensor surface.
Claims15
System comprising a touch screen, a trackball and a trackball detector, wherein the trackball comprises a support structure and a ball, wherein the touch screen comprises a display and a touch sensor with a touch sensor surface, wherein the touch sensor surface is superposed onto a surface of the display, wherein the touch sensor is configured to detect a position of a touch of an object on the touch sensor surface, wherein the trackball rotatably supports a ball, wherein the trackball detector is configured for detecting a rotational movement and/or a rotational position of the ball,
- wherein the trackball is arranged on the touch sensor such that the ball is rotatably supported over the touch sensor surface,
- wherein a surface of the ball comprises a pattern of detection portions, and
- wherein the trackball detector is configured to detect the rotational movement and/or the rotational orientation of the ball on the basis of a movement and/or a position of at least one of the detection portions detected on the touch sensor surface.
Method for reading user commands of a trackball arranged over a touch sensor surface of a touch sensor of a touch screen, wherein the trackball comprises a ball with a pattern of detection portions, the method comprising the following steps:
- receiving a measurement frame of a subfield of touch pixels of the touch sensor arranged under the ball;
- determining a rotational orientation of the pattern of detection portions on the basis of the measurement frame of the subfield;
- determining a user command on the basis of the rotation orientation of the ball.
Touch screen configured to detect a position of a touch of an object on a touch sensor surface of a touch sensor of the touch screen and comprising a track detector configured to perform the following steps:
- receiving a measurement frame of a subfield of touch pixels of the touch sensor arranged under the ball;
- determining a rotational orientation of the pattern of detection portions on the basis of the measurement frame of the subfield;
- determining a user command on the basis of the rotation orientation of the ball.
Dependencies are inferred from the claim text.