Abstract: In an object detection method for a capacitive touchpad, at least one reference time interval is used to distinguish whether a variation of the sensed value on the touchpad is resulted from an operation of an object on the touchpad, actions such as an object touch down to the touchpad, an object lift from the touchpad and an object movement on the touchpad are then determined, and operations corresponding to various gestures are correctly detected.

Abstract: Methods are provided for base capacitance compensation of traces in a touchpad sensor. Compensation areas are calculated by evaluating the differences between the base capacitances of the traces, or the differences between the base capacitances of the traces and a target value. The compensation areas are electrically connected to respective traces to equalize the base capacitances of the traces. Alternatively, a relationship between the areas of the traces and the distances from the traces to a grounding layer for equalizing the base capacitances of the traces is derived and from which the areas of the traces or the position of the grounding layer are adjusted.

Abstract: A touch-sense apparatus available for one-dimensional and two-dimensional modes comprises a sensor having a plurality of traces in two directions to sense the position touched by an object to produce a first signal, a two-dimensional coordinate processor to produce a two-dimensional coordinate based on the first signal in the two-dimensional mode, and a coordinate transformer to produce a second signal from the first signal or the two-dimensional coordinate in the one-dimensional mode for a one-dimensional coordinate processor to produce a one-dimensional coordinate in response to the second signal.

Abstract: A capacitive touchpad includes a controller, a plurality of scan lines and a plurality of sensor pads distributed over a one dimensional touch sensor. Each of the sensor pads is connected to the controller by a respective one of the scan lines to transmit a sensed value to the controller. The controller uses the sensed values and the positions of some of the sensor pads in an interpolation to determine the two dimensional coordinates of one or more touched positions. Based on the sensed values, the controller selects one or more of the sensor pads as one or more reference points for the interpolation.

Abstract: Operation control methods and systems. Contacts respectively corresponding to at least two pointers on a touch-sensitive mechanism are detected. Movements of the contacts on the touch-sensitive mechanism are detected, and an operation instruction is determined according to the movements. A host executes the operation instruction by enabling a specific object to perform an operation.

Abstract: In a gesture detection method for a touch control bar with button and scroll bar functions, according to the present invention, various gestures such as tap, drag and double tap are determined by detecting an object that touches on the touch control bar, leaves from the touch control bar, and moves on the touch control bar.

Abstract: A touch control bar with button function comprises a plurality of scroll sensor areas and at least a button sensor area disposed between two adjacent ones of the scroll sensor areas. On the touch control bar, a virtual button is defined over an area covering at least a button sensor area. The gesture on the touch control bar will determine which function between button and scroll is to be performed.

Abstract: Methods are provided for base capacitance compensation of traces in a touchpad sensor. Compensation areas are calculated by evaluating the differences between the base capacitances of the traces, or the differences between the base capacitances of the traces and a target value. The compensation areas are electrically connected to respective traces to equalize the base capacitances of the traces. Alternatively, a relationship between the areas of the traces and the distances from the traces to a grounding layer for equalizing the base capacitances of the traces is derived and from which the areas of the traces or the position of the grounding layer are adjusted.

Abstract: A multi-function touchpad has a first button located at substantially a center of the touchpad and a second button at substantially an edge of the touchpad. When the first button is pressed, if the second button is also pressed, the touchpad triggers the function in response to the first button and ignores the pressing of the second button.

Abstract: An Internet phone comprises a touchpad on which a panel is provided and several regions are defined on the panel for inputting by object touch, a mode-switching region on the panel for being touched to switch the touchpad among various modes, several icons in the defined regions for supporting the operations in the various modes, a display device for displaying the information inputted on the panel, and a communication interface serving as a communication channel between the Internet phone and other electronic devices. The various modes includes a telephone mode, a handwriting input mode and a cursor mode.

Abstract: A smart control method for cursor movement using a touchpad comprises detecting the location of an object touched on the touchpad for determining the coordinate information of the object, detecting the movement of the object on the touchpad for generating the location information of the object, and generating a signal representative of moving a cursor if the object is detected to stop moving on and stay on the touchpad for a period longer than a threshold time.

Abstract: In an object detection method for a capacitive touchpad, at least one reference time interval is used to distinguish whether a variation of the sensed value on the touchpad is resulted from an operation of an object on the touchpad, actions such as an object touch down to the touchpad, an object lift from the touchpad and an object movement on the touchpad are then determined, and operations corresponding to various gestures are correctly detected.

Abstract: A touch-sense apparatus available for one-dimensional and two-dimensional modes comprises a sensor having a plurality of traces in two directions to sense the position touched by an object to produce a first signal, a two-dimensional coordinate processor to produce a two-dimensional coordinate based on the first signal in the two-dimensional mode, and a coordinate transformer to produce a second signal from the first signal or the two-dimensional coordinate in the one-dimensional mode for a one-dimensional coordinate processor to produce a one-dimensional coordinate in response to the second signal.

Abstract: An integrally formed monitor comprises one or more touchpads to provide function keys, and therefore projecting structure for function keys to be pressed by users is not necessary for the monitor owing to the touch-sense feature of the touchpad.