Patent application number | Description | Published |
20110050615 | PROCESSING CIRCUIT FOR DETERMINING TOUCH POINTS OF TOUCH EVENT ON TOUCH PANEL AND RELATED METHOD - A processing circuit for determining a touch point of a touch event on a touch control panel includes a plurality of sensing electrodes of the touch control panel, which generates a plurality of sensing signals in response to the touch event, respectively, and generates a plurality of sensing outputs according to differences of the plurality of sensing signals. The processing circuit includes a storage unit and a computation unit. The storage unit stores a plurality of known parameters, wherein the plurality of known parameters includes hardware parameters of at least one sensing electrode within the plurality of the sensing electrodes and signal parameters corresponding to at least one sensing output within the plurality of sensing outputs. The computation unit is coupled to the storage unit, and is for determining the touch point of the touch event according to the plurality of the sensing outputs and the plurality of known parameters. | 03-03-2011 |
20110080370 | TOUCH DEVICE - A touch device includes a plurality of row electrodes, a plurality of column electrodes and a plurality of sensing units. The sensing units are used for detecting touched positions according to potentials of the row electrodes and column electrodes. The sensing units include at least a first sensing unit and a second sensing unit. The first sensing unit is coupled to a first portion of the row electrodes and a first portion of the column electrodes. The second sensing unit is coupled to a second portion of the row electrodes that is different from the first portion of the row electrodes, and a second portion of the column electrodes that is different from the first portion of the column electrodes. | 04-07-2011 |
20110210938 | Capacitance Offset Compensation for Electronic Device - An electronic device includes: a touch input device, a touch sensing circuit coupled to the touch input device and a capacitance offset compensation circuit. The capacitance offset compensation circuit includes: a first offset compensation capacitance array, coupled to a reference voltage or a driving signal in response to a control signal from the touch sensing circuit, coupled to one of a first coupling voltage and a second coupling voltage from the touch input device in response to the control signal. The first offset compensation capacitance array adjusts an output equivalent capacitance in response to the control signal, for compensating at least one of a GND parasitic capacitance and a cross coupling capacitance of the touch input device. | 09-01-2011 |
20110221695 | TOUCH PANEL AND TOUCH SENSING METHOD THEREOF - A touch sensing method includes providing a touch panel having a plurality of axial sensor chains disposed side by side, wherein each of the sensor chains outputs a signal. The touch sensing method generates a plurality of determination data based on the signals, wherein each of the determination data corresponds to one of the sensor chains or to a plurality of sensor pairs formed by two adjacent sensor chains. When two adjacent determination data are respectively greater than and smaller than a base value, the touch sensing method will determine a touch point based on locations of the sensor pairs or locations of the sensor chains corresponding to the determination data. | 09-15-2011 |
20120038574 | DETECTION METHOD AND DETECTION CIRCUIT FOR DETECTING TOUCH EVENT ON TOUCH PANEL BY SELECTING NON-ADJACENT SENSING AXIS AS REFERENCE AXIS - A detection method for detecting a touch event on a touch panel includes a plurality of first sensing axes on a first dimension, and a plurality of second sensing axes on a second dimension. The detection method includes: regarding each first sensing axis, choosing another first sensing not neighboring with the first sensing axis as a first reference axis, and utilizing the first sensing axis and the first reference axis to derive a first sensing data corresponding to the first sensing axis; utilizing the second axes to derive a second sensing data corresponding to each second sensing axis; and utilizing first sensing data respectively corresponding to the first sensing axes and second sensing data respectively corresponding to the second sensing axes to derive a touch event detection result. | 02-16-2012 |
20120062463 | TOUCH SENSING APPARATUS FOR GENERATING TOUCH SENSING RESULT ACCORDING TO DIFFERENTIAL SIGNAL OF MUTUAL CAPACITANCE TRIGGERED BY TOUCH EVENT - A touch sensing apparatus includes at least one sensing key and a processing circuit. Each of the sensing key includes a signal receiving component for receiving a driving signal, a first sensing block and a reference block. The first sensing block is coupled to the signal receiving component, and arranged to generate a first sensing signal according to a touch event and the driving signal. The reference block is coupled to the signal receiving component, and arranged to generate a reference signal according to the touch event and the driving signal. The processing circuit is coupled to the sensing key, and arranged to provide the driving signal and receive the first sensing signal and reference signal, generate a sensing output of the sensing key according to the reference signal and first sensing signal generated by the sensing key, and generate the touch sensing result according to the sensing output. | 03-15-2012 |
20120075219 | DETECTION METHOD AND DETECTING APPARATUS FOR DETECTING MULTIPLE TOUCH POINTS ON TOUCH PANEL - A detection method for detecting a plurality of contacts on a touch panel includes: generating a preliminary sensing data according to the contacts on the touch panel; determining a plurality of first specific sensing axes included in a plurality of first sensing axes and a plurality of f second specific sensing axes included in a plurality of second sensing axes according to the preliminary sensing data; utilizing a configuration circuit to configure a driving and receiving sequence of the plurality of first sensing axes and the plurality of second sensing axes for obtaining a first sensing data and a second sensing data; and utilizing a determining circuit to receive a completion instruction, wherein when the determining circuit receives the completion instruction, the determining circuit determines a touch detection result according to the first sensing data and the second sensing data. | 03-29-2012 |
20120113035 | DETECTION METHOD AND DETECTION DEVICE FOR DETECTING MULTIPLE CONTACTS ON TOUCH PANEL ACCORDING PRELIMINARY SENSING DATA - A detection method for detecting a plurality of contacts on a touch panel including a plurality of first sensing axes on a first dimension and a plurality of second sensing axes on a second dimension, includes: generating a preliminary sensing data according to the contacts on the touch panel; determining a plurality of first specific sensing axes included in the plurality of first sensing axes and a plurality of f second specific sensing axes included in the plurality of second sensing axes according to the preliminary sensing data; driving the plurality first specific sensing axes one-by-one; obtaining a first sensing data by respectively receiving a sensing data corresponding to each of the plurality first specific sensing axes from the plurality of second sensing axes of the touch panel; and determining the plurality of contacts according to at least the first sensing data. | 05-10-2012 |