Patent application number | Description | Published |
20090321148 | TOUCH PANEL DEVICE AND CIRCUITRY THEREOF - A touch panel circuitry, which is coupled to a controller, comprises a plurality of electrode strips and a plurality of conductive traces. The electrode strip configured to provide touch signals has two strip ends. The conductive trace is configured for electrically coupling the two strip ends of the corresponding electrode strip so as to form a closed loop circuit. Each conductive trace is also connected to the controller to transmit signals generated by the corresponding electrode strip. | 12-31-2009 |
20100039396 | TOUCH SENSING APPARATUS AND SENSING SIGNAL PROCESSING METHOD THEREOF - A touch sensing apparatus for accelerating a sensing signal processing operation is provided. The touch sensing apparatus includes a plurality of sets of horizontal sensing lines, a plurality of sets of vertical sensing lines, a plurality of processing circuits, and a plurality of sensing units. The plurality of sensing units output a plurality of sets of horizontal and vertical sensing signals via the plurality of sets of horizontal and vertical sensing lines respectively. Each processing circuit is coupled to corresponding sets of horizontal and vertical sensing lines. Furthermore, disclosed is a sensing signal processing method essentially including scanning the plurality of sets of horizontal sensing lines in synchronization for synchronously fetching the plurality of sets of horizontal sensing signals during a first interval, and scanning the plurality of sets of vertical sensing lines in synchronization for synchronously fetching the plurality of sets of vertical sensing signals during a second interval. | 02-18-2010 |
20100046850 | Multipoint Tracking Method and Related Device - Multipoint tracking is performed by receiving raw data of an image, calculating line average values for a plurality of lines of the raw data, filtering the raw data according to the line average values to generate filtered data, performing a dilation algorithm on the filtered data to generate dilated data, performing an erosion algorithm on the dilated data to generate eroded data, performing edge detection on the eroded data for identifying touch regions of the raw data, performing a labeling algorithm on the touch regions, calculating centers of gravity for the touch regions, and generating a multipoint tracking result according to the centers of gravity. | 02-25-2010 |
20100073320 | MULTI-TOUCH POSITIONING METHOD FOR CAPACITIVE TOUCH PANEL - A multi-touch positioning method for a capacitive touch panel includes following steps. A candidate touching position array including a first and a second candidate position groups is generated when the capacitive touch panel is touched by two objects. The first and the second candidate position groups include two first and second candidate positions, respectively. Next, the signal magnitude sensed by a sensing element and respectively corresponding to the first and the second candidate position groups are compared. Then, when the signal magnitude corresponding to the first candidate position group is greater than that corresponding to the second candidate position group, one of the two first candidate positions closer to the sensing element along a first direction is determined as a first actual touching position, and one of the two second candidate positions farther from the sensing element along the first direction is determined as a second actual touching position. | 03-25-2010 |
20100079397 | Detecting Method for Touch Panel - This invention provides a detecting method for a touch panel, comprising providing a sensing matrix having a plurality of sensing units, detecting sensing data generated from the sensing unit and defining the sensing unit as a touch point or a non-touch point based on the sensing data and group at least a portion of the touch points to form a touch point group. In the same touch point group, projection of a touch point overlaps a projection of at least one touch point of the touch point group in one of a row direction and a column direction while adjacent to a projection in the other direction of at least one touch point of the touch point group. Afterward, extreme positions of the touch point group in the row direction and the column direction is retrieved. Lastly, the detecting method includes determining a touch center position based on the extreme positions in the row direction and the column direction. | 04-01-2010 |
20100088595 | Method of Tracking Touch Inputs - For a multitouch input configuration, tracking touch inputs includes calculating a first center position corresponding to two touch points along a first axis for a first frame, detecting variation of the first center position from the first frame to a second frame, and determining a gesture type according to the variation of the first center position. | 04-08-2010 |
20100090976 | Method for Detecting Multiple Touch Positions on a Touch Panel - A method for detecting multiple touch positions on a touch panel includes the steps of: periodically scanning the touch panel; when detecting a first touch position at a first time during scanning the touch panel, recording coordinates on a first dimensional direction and a second dimensional direction of the first touch position; continuingly scanning the touch panel after the first time; and when detecting a plurality of new possible touch positions at a second time, determining a second touch position from the new possible touch positions according to the recorded coordinates on the first and second dimensional directions of the first touch position. | 04-15-2010 |
20100134442 | Detecting Method for Photo-Sensor Touch Panel and Touch-Sensitive Electronic Apparatus using the same - An exemplary detecting method for a photo-sensor touch panel and a touch-sensitive electronic apparatus using the same are provided. In aforementioned method, an image frame is obtained by scanning the photo-sensor touch panel. Then, a distribution area of data points in the image frame each having a brightness between a predetermined brightness and a first threshold brightness is defined as a first sensing area, and a distribution area of data points in the image frame each having a brightness between the predetermined brightness and a second threshold brightness is defined as a second sensing area. Afterward, it is determined that whether a real touch probably/really occurred according to a relative distance between one of first data points and corresponding one of second data points. The first data points located in the first sensing area, and the second data points located in the second sensing area. | 06-03-2010 |
20100302182 | TOUCH PANEL WITH REDUCED CHARGE TIME - A touch panel includes a sensing region, a storage unit, a precision rectifier circuit and a comparing circuit. There exists an equivalent capacitance at a predetermined location in the sensing region. At the predetermined location, the sensing region can provide a first signal before a touch action occurs and a second signal after the touch action occurs. The precision rectifier circuit can control the signal transmission path between the predetermined location and the storage unit. After being charged by the first and second signals, the storage unit can respectively provide corresponding third and fourth signals. The comparing circuit can thus determine whether the touch action occurs at the predetermined location according to the third and fourth signals. | 12-02-2010 |
20110037708 | TOUCH PANEL DEVICE HAVING HIGH TOUCH SENSITIVITY AND TOUCH POSITIONING METHOD THEREOF - A touch panel device having high touch sensitivity includes sensing capacitors, switches, storage capacitors, a differential amplifier and a signal processing unit. During a sense period, the switches are periodically turned on alternately for periodically transferring the charges of the sensing capacitors to the storage capacitors. The differential amplifier is put in use for amplifying the voltage difference of two corresponding storage capacitors for generating a touch readout signal. The signal processing unit performs an OR operation on two touch readout signals generated during different sense periods based on different sensing capacitor combinations regarding same panel touch position for providing a touch position signal. | 02-17-2011 |
20110063246 | CAPACITIVE TOUCH DETECTION SYSTEM AND DETECTION SIGNAL RECEIVING AND WAVEFORM SHAPING MODULE - An exemplary capacitive touch detection system includes a capacitive touch panel and a detection control circuit. The capacitive touch panel includes a plurality of input terminals and output terminals. The detection control circuit includes a scanning signal transmitting module electrically coupled to the input terminals and a detection signal receiving and waveform shaping module including a receiver and an impedance-matching network. The detection signal receiving and waveform shaping module is electrically coupled to the output terminals for receiving and processing a plurality of detection signals outputted from the respective output terminals and thereby producing a plurality of processed detection signals. The receiver is used for receiving the detection signals. The impedance-matching network is used for performing a waveform shaping operation applied to the detection signals to compensate an effect caused by uneven RC loading distribution in the capacitive touch panel and thereby producing the processed detection signals. | 03-17-2011 |
20110285663 | TOUCH DETECTING METHOD AND FLAT DISPLAY DEVICE WITH IN-CELL TOUCH PANEL - A touch detecting method comprises: enabling a sample signal in a period between driving a previous gate line and a previous two gate line before a corresponding gate line of a sense unit, and sampling a readout signal in a corresponding readout line during a sample period corresponding to the enabled sample signal by a readout unit; using the sampled readout signal during the sample period by the readout unit as a sample reference signal; enabling a sense readout signal in a period between driving the corresponding gate line of the sense unit and a next gate line, and reading out the readout signal during a sense readout period corresponding to the enabled sense readout signal; using the readout signal during the sense readout period as a sense signal; and judging whether the sense unit is touched according to the sample reference signal and the sense signal. | 11-24-2011 |
20110298734 | THRESHOLD COMPENSATION METHOD ON TOUCH DEVICE - The disclosure provides a threshold compensation method applied to a touch device including a plurality of touch points. The threshold compensation method includes steps of: selecting at least one of the plurality of touch points as a selected object; obtaining a sensing data of each the touch point of the selected object in each of multiple initializing frequency periods; obtaining a sensing data difference value between the sensing data of each the touch point of the selected object in each adjacent two of the initializing frequency periods; obtaining a maximum sensing data difference value in the multiple sensing data difference values of the selected object in the multiple initializing frequency periods; and setting a default threshold of the selected object according to the maximum sensing data difference value. | 12-08-2011 |
20110298759 | Method of Reducing Noises on a Touch Panel - During test of a display, a synchronous reference signal is determined, and an appearing moment of a minimal-noise signal is determined based on a start moment of the synchronous reference signal. Therefore, during other tests or usage by a user on the display, noise from data lines due to data coupling may be avoided, and detection and determination of touch commands on a touch panel of the display may be isolated from being disturbed by the noise. | 12-08-2011 |
20110316795 | METHOD FOR CORRECTING AND RECORDING INITIAL TOUCH POINTS ON TOUCH PANEL - While correcting and recording initial touch points on a touch panel, a plurality of sensors on the touch panel are classified into a plurality of first sensing groups assigned with serial numbers, and a plurality of sensors of each the first sensing group are equally divided into a plurality of second sensing groups assigned with serial numbers. After detecting initial touch points on the touch panel, a plurality of headers are generated for the plurality of first sensing groups, and a data structure is generated for each of the sensors having detected initial touch points according to whether first sensing groups corresponding to the headers have the sensors having the detected initial touch points or not. At last, the initial touch points are filtered off from a plurality of detected touch points on the touch panel, according to initial touch point information recorded in loaded data structures. | 12-29-2011 |
20120154322 | METHOD FOR DETERMINING SCANNING TIMES OF TOUCH DRIVING PULSE IN A TOUCH PANEL - A method for determining scanning times of touch driving pulse in a touch panel includes steps of: judging a current gate line scan period is in which one of a data updating time period and a blanking time period; if the current gate line scan period is in the data updating time period, setting a scanning times of touch driving pulse in the current gate line scan period to be a first value; and if the current gate line scan period is in the blanking time period, setting the scanning times of touch driving pulse in the current gate line scan period to be a second value. The first value is different from the second value, and a time for touch driving pulse scanning is non-overlapped with another time for providing display data to data lines of the touch panel in each scan line scan period. | 06-21-2012 |
20120194475 | MULTI-TOUCH POSITIONING METHOD FOR CAPACITIVE TOUCH PANEL - A multi-touch positioning method for a capacitive touch panel includes following steps. A candidate touching position array including a first and a second candidate position groups is generated when the capacitive touch panel is touched by three objects. The first, the second and the third candidate position groups include three candidate positions, respectively. The signal magnitude sensed by a sensing element and respectively corresponding to the first, the second and the third candidate position groups are compared. One of the three first, the three second and the three third candidate positions are respectively determined as a first, a second and a third actual touching positions according to the compared result. | 08-02-2012 |
20120242595 | METHOD FOR DETERMINING TOUCH POINT - An exemplary method for determining a touch point includes the following steps of: performing a first operation to determine whether a detected result of a first touch detection point exceeds a first threshold; performing a second operation to determine whether all detected results of multiple second touch detection points are no more than the detection result of the first touch detection point, the second touch detection points neighboring with the first touch detection point; performing a third operation to determine whether a sum of detected results of multiple third touch detection points exceeds a second threshold, the third touch detection points neighboring with the first touch detection point; and determining the first touch detection point as the touch point is being touched if the determine results of the first through third operations are all true. | 09-27-2012 |
20120319962 | METHOD FOR CONTROLLING OPERATIONS OF A TOUCH PANEL - A method for controlling operations of a touch panel includes synchronizing timing of a plurality of gate lines and timing of a plurality of touch sensors; determining whether polarities of common voltages of a display layer are consistent when driving signals are outputted to a first gate line and a second gate line, the second gate line following the first gate line; and if the polarities are consistent, outputting at least one driving pulse to a touch sensor of the plurality of touch sensors after image data corresponding to the second gate line is transmitted to the display layer. | 12-20-2012 |
20130063370 | SIGNAL PROCESSING METHOD OF A TOUCH PANEL - A signal processing method is employed to operate a touch panel having a first touch sensing unit and plural second touch sensing units adjacent to the first touch sensing unit. In the operation of the method, a first signal is generated through amplifying the first sensing signal of the first touch sensing unit by N times with N equal to the number of the second touch sensing units, a second signal is generated through summing up the second sensing signals of the second touch sensing unit, a difference signal is generated through subtracting the second signal from the first signal, a comparison result is generated through comparing the difference signal with a difference threshold, and finally the comparison result is utilized for judging whether a touch event is occurring to the first touch sensing unit. | 03-14-2013 |
20130285936 | METHOD FOR A TOUCH PANEL TO GENERATE A TOUCH SIGNAL - A touch panel includes a plurality columns of sensing partitions, a plurality of driving lines, a plurality of sensing lines and a memory. A method for the touch panel to generate a touch signal includes sequentially inputting driving signals to the plurality of driving lines, reading a plurality of voltage values of one of the plurality columns of sensing partitions through one of the plurality of sensing lines, converting the plurality of voltage values into a plurality of digital values, calculating a mean of the digital values, and storing the coordinate of at least one digital value in a memory. The difference between the at least one digital value and the mean is larger than a predetermined value. | 10-31-2013 |
20140062913 | METHOD FOR DETECTING TOUCH POINT OF MULTI-TYPE OBJECTS - A method for detecting touch points of multi-type objects includes: determining whether or not there existing a touch point by a detection of an energy variation below a first effective value; referring the touch point having an area smaller than a first predetermined value as a first-type touch point; referring the touch point having an area larger than a second predetermined value as a second-type touch point; detecting, if there exists the second-type touch point, the energy variation below a second effective value; and determining the coordinate position of the second-type touch point according to the detecting result obtained from the energy variation below the second effective value. The second effective value is larger than the first effective value. | 03-06-2014 |
20140071038 | METHOD FOR GENERATING MOVEMENT POSITION COORDINATE AND HUMAN-MACHINE INTERFACE INPUT SYSTEM USING THE SAME - A method for generating a movement position coordinate adapted to be used in a human-machine interface input controller is provided. The method includes steps of: sequentially generating a plurality of position coordinates by detecting a movement of an object; reading and storing the position coordinates; performing, when the number of the stored position coordinates reaches to a predetermined value, an operation on the position coordinates to obtain a movement position coordinate; and modulating the predetermined value in accordance with a change of a movement rate of the object. | 03-13-2014 |