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Patent

Gestures for touch sensitive input devices

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TLDR
In this article, the authors described a system for processing touch inputs with respect to a multipoint sensing device and identifying at least one multipoint gesture based on the data from the multi-point sensing device.
Abstract
Methods and systems for processing touch inputs are disclosed. The invention in one respect includes reading data from a multipoint sensing device such as a multipoint touch screen where the data pertains to touch input with respect to the multipoint sensing device, and identifying at least one multipoint gesture based on the data from the multipoint sensing device.

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Touch screen device, method, and graphical user interface for determining commands by applying heuristics

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TL;DR: In this article, a user interface method for detecting a touch and then determining user interface mode when a touch is detected is presented. And the method further includes activating one or more GUI elements based on the user interface modes and in response to the detected touch.
References
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Patent

Optical pointing device

TL;DR: In this article, an optical pointing device which uses infrared light as a source and a camera as a detector is described. But it is not shown how the camera can be used to determine the direction in which the camera is pointing with respect to a display screen adjacent the light source.
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Rotary circuit control devices with changeable graphics

TL;DR: In this paper, an electrical circuit control of the type having a knob which is turned by an operator to vary a circuit condition is affixed to the face of an electronic image display device and at least a portion of the knob overlays the image display area.
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Secondary touch contextual sub-menu navigation for touch screen interface

TL;DR: A touch sensitive user interface of the type having a display screen for displaying images representative of menus and selectable list objects, for example, control logic responsive to the touch-sensitive user interface for determining the contact position of a first probe and a second probe, such as two separate fingers, thereon, displaying menus including list objects representing primary and secondary features or functions respectively as mentioned in this paper.
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Text input system for a mobile electronic device and methods thereof

TL;DR: In this article, the location of a user's touch on the touch interface is detected and more than one letter may be identified based on the location, and predictive text software is used to determine which of the identified letters the user intended to select.
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Method and apparatus for detecting and interpreting path of designated position

TL;DR: In this article, a method of detecting and interpreting a path of designated positions is presented, which concurrently detects a plurality of designated position on a touch panel, again detects the plurality of positions subsequent to a travel of the designated positions, determines the distances between each of the current designated positions and the respective immediately preceding positions, and acquires the path of each designated position to identify a designation input by a user and an operation thus designated is executed.