Patent application number | Description | Published |
20080259034 | OPTICAL POINTING DEVICE AND METHOD FOR CALCULATING MOTION VALUE IN THE SAME - The optical pointing device of the present invention includes a light source for emitting light; a mode identifier for outputting an upside-down mode signal when the optical pointing device is used upside-down; an image sensor for receiving reflected light from an object and obtaining image information of the object; a converter for converting the image information into digital image data; a basic motion value calculator for outputting a basic motion value corresponding to a motion of the optical pointing device using the image data; and a motion value converter for receiving the basic motion value and outputting a mirror motion value corresponding to the motion of the object in response to the upside-down mode signal. Thus, the optical pointing device provides the rotation mode, the upside-down mode and the normal mode, so that the optical pointing device is used in various situations and upside-down. | 10-23-2008 |
20080273756 | POINTING DEVICE AND MOTION VALUE CALCULATING METHOD THEREOF - A pointing device is provided. A sensor generates a motion detection signal by sensing motion. A calculator receives the motion detection signal, calculates a motion value based on the motion detection signal, calculates a conversion motion value base on an angle of the motion value, and outputs the conversion motion value. An interface outputs the motion conversion value inputted from the calculator. By limiting a motion angle, the pointing device can provide a positioning operation suitable for a motion intended by a user. The user can optionally use a motion control method in all directions according to need. | 11-06-2008 |
20090267899 | OPTICAL SENSOR MODULE FOR OPTICAL POINTING DEVICE AND METHOD OF FABRICATING THE SAME - An optical sensor module for an optical pointing device and a method of fabricating the same are provided. The optical sensor includes: a lead frame having a light receiving hole formed in a pad; an image sensor attached to the pad and detecting light emitted from a light source through the light receiving hole; and a molding member for integrally molding the lead frame and the image sensor. The method includes: forming a light receiving hole in a pad of a lead frame; attaching an image sensor to the pad; connecting the image sensor to a lead of the lead frame by bonding using a wire; molding the lead frame and the image sensor; and trimming the lead of the lead frame to a certain length and forming the lead. | 10-29-2009 |
20090289171 | OPTICAL POINTING DEVICE - An optical pointing device is provided. The optical pointing device includes an image sensor including a photocell array including a plurality of photocells for sensing light and generating an analog signal corresponding to the light, the image sensor sequentially outputting analog signals from the plurality of photocells, a comparator for comparing the signals output from the image sensor to generate a relative comparative signal, and comparing at least one signal output from the image sensor with a comparative signal to generate an absolute comparative signal, and a controller for outputting motion data using the relative comparative signal and outputting a shutter control signal using the absolute comparative signal. The optical pointing device does not include an A/D converter or a pre-filter circuit, thus reducing a chip size of a semiconductor integrated circuit, unlike a conventional optical pointing device. Furthermore, the optical pointing device can obtain high-quality image data and accordingly accurate motion data of an object, by using the comparator having the offset removal and the offset correction circuit external to the image sensor. Also, the use of the second photocell separate from the image sensor can reduce data computational complexity of the shutter control signal controller in the image processor, thus reducing current consumption in the image processor. | 11-26-2009 |
20100006349 | SENSOR DEVICE AND METHOD OF OPERATING THE SAME - Provided are a sensor device and a method of operating the same. The sensor device includes a plurality of semiconductor devices connected in series. When a semiconductor device does not sense a state of contact with an object and receives first sensing data from a preceding semiconductor device, the semiconductor device outputs the first sensing data to a succeeding semiconductor device. When the semiconductor device senses the state of contact with the object and receives the first sensing data from the preceding semiconductor device, the semiconductor device generates second sensing data and outputs the first and second sensing data to the succeeding semiconductor device. When the semiconductor device senses the state of contact with the object and does not receive the first sensing data from the preceding semiconductor device, the semiconductor device generates the second sensing data and outputs the second sensing data to the succeeding semiconductor device. The method includes the steps of: generating, by at least one semiconductor device for generating a sense signal, identification (ID) information, storing and outputting the ID information to the succeeding semiconductor device after a supply voltage is initially applied to the semiconductor device; outputting first sensing data to the succeeding semiconductor device when a state of contact with an object is not sensed and the first sensing data is received from a preceding semiconductor device; generating second sensing data when the state of contact with the object is sensed, and outputting the first sensing data and the second sensing data when the first sensing data is received from the preceding semiconductor device; and outputting the second sensing data when the first sensing data is not received from the preceding semiconductor device. | 01-14-2010 |
20100072916 | TOUCH SENSOR DEVICE - Provided is a touch sensor device including: at least one terminal connected to at least one contact pad; at least one common terminal; at least one light emitter connected between the common terminal and the terminal; and a touch sensor and light-emission controller unit connected to the common terminal and the terminal, and when a touch is sensed by the contact pad, controlling a corresponding light emitter to emit light. | 03-25-2010 |
20100188359 | TOUCHPAD COMPRISING STRUCTURE FOR TACTILE SENSATION AND TOUCH SENSOR USING THE SAME - Provided are a touchpad and a touch sensor using the same. The touchpad includes: a printed circuit board (PCB); a plurality of conductors; and a non-conductive board disposed on one surface of the PCB and having a plurality of protrusions respectively including the conductors therein. In addition, the touch sensor includes: the touchpad; and a contact signal generation unit having a plurality of digital contact controllers for sensing delay due to a change in impedance between the conductors in the protrusions and the PCB and outputting a digital signal according to the delay. An apparatus having the touchpad as an input device enables a user to feel the touchpad better. | 07-29-2010 |
20100188360 | ELECTRONIC DEVICE AND METHOD OF ARRANGING TOUCH PANEL THEREOF - Provided are an electronic device and a method of arranging a touch panel thereof. The electronic device includes: a display panel for displaying an image; a touch panel including a cover and a plurality of electrodes adhered to the cover; and a sensing unit including a plurality of digital contact controllers for detecting delays caused by variations of capacitances of the electrodes to output digital data signals. Thus, the electronic device includes an economical touch panel that can be variously applied according to users' convenience or purpose without using an expensive substrate having the entire surface coated with an ITO layer. | 07-29-2010 |
20100277433 | TOUCH PANEL DEVICE AND METHOD OF DETECTING CONTACT POSITION THEREOF - Provided are a touch pad device and a method of detecting a contact position thereof. The touch panel device includes: a touch panel having a surface on which at least one pair of touch patterns formed of a conductive material are formed; and a touch sensor for generating a contact signal corresponding to a contact position of a contact object using impedances of a pair of touch patterns when the pair of touch patterns are contacted by the contact object. The touch panel device includes a plurality of pairs of touch patterns formed of a conductive material. A first axis position of a contact object is determined depending on whether or not the touch patterns are contacted by the contact object, and a second axis position of the contact object is determined by detecting variations in capacitance of the touch patterns or delay times by which a reference signal applied to the touch patterns is delayed. Thus, a contact position of the contact object can be detected using the first and second axis positions. Since the touch panel uses a one-layer ITO film, manufacturing the touch panel device with improved transparency can be easy and economical. | 11-04-2010 |
20100327953 | AUTOMATIC IMPEDANCE ADJUSTER AND CONTROL METHOD THEREOF - Provided are an automatic impedance adjuster and a control method thereof. The automatic impedance adjuster includes: a pulse signal generating part for generating a pulse signal having a pulse width varied in response to a pulse width control signal; a signal processing part including a plurality of channels having a plurality of first input sensors and a pulse width correction channel having a second input sensor, not outputting the pulse signal when a touch object is in contact with the first and second input sensors, and outputting the pulse signal when the touch object is not in contact with the first and second input sensors; and a controller for outputting a non-contact state when the pulse signal is detected and outputting a contact state when the pulse signal is not detected during a normal mode, entering an automatic impedance adjustment mode to control the pulse width control signal when a pre-determined time elapses, and entering the automatic impedance adjustment mode to control the pulse width control signal when the pulse signal is not detected through all the plurality of channels or the pulse width correction channel. The automatic impedance adjuster includes a specific channel for checking an operating environment. When an operation signal of the specific channel is detected or operation signals of all the channels are detected, the automatic impedance adjustment operation is performed to prevent malfunction of the impedance adjustment operation. In addition, malfunction of a touch sensor due to variation of the operating environment can be prevented to improve operating reliability of the touch sensor. | 12-30-2010 |
20110025635 | TOUCH AND PROXIMITY SENSITIVE DISPLAY PANEL, DISPLAY DEVICE AND TOUCH AND PROXIMITY SENSING METHOD USING THE SAME - A touch and proximity sensitive display panel, a display device, and a touch and proximity sensing method using the same are disclosed. The display panel includes a plurality of pixels arranged in a matrix form, a pixel substrate having a pixel electrode arranged in an image output direction, a common substrate having a common electrode arranged at a position facing the pixels, and a panel controller that identifies touch and proximity positions of a touch object by sensing electrostatic capacitances of the pixel electrodes through the data lines in a touch-sensing mode. The display panel can sense the touch and proximity of the touch object without an additional touch screen. | 02-03-2011 |
20110037727 | TOUCH SENSOR DEVICE AND POINTING COORDINATE DETERMINATION METHOD THEREOF - Provided are a touch sensor device and a pointing coordinate determination method thereof. The touch sensor device includes a touch panel, a touch sensing unit that receives a touch signal, senses touch information according to a simple touch or touch strength of a touch object, and outputs an electrical signal, a touch data storage that stores touch data in response to the electrical signal, a template storage that pre-stores templates for various outlines of the touch object in response to the electrical signal, and a touch data processor that senses an outline of the touch object according to a distance difference related to the touch object by receiving the touch data, and determines pointer coordinates of a pointing device by receiving and mapping a stored template of the touch object. | 02-17-2011 |
20110050638 | TOUCH SENSOR DEVICE AND THE METHOD OF SWITCHING OPERATION MODE THEREOF - Provided are a touch sensor device and a method of switching an operation mode in the touch sensor. The touch sensor device includes a touch panel for receiving an input signal generated by a touch on a surface of the touch panel and generating a touch signal on the basis of a change in internal capacitance; and a touch sensor chip for receiving the touch signal, calculating touch information, generating sense data, comparing the sense data with previously stored pattern signals, and controlling the touch sensor device to perform an operation corresponding to the received input signal. | 03-03-2011 |
20110102353 | TOUCH PANEL APPARATUS AND A METHOD FOR DETECTING A CONTACT POSITION ON THE SAME - A touch panel device and a method for detecting a contact position are provided. The touch panel device includes a touch panel including a first touch pattern, the first touch pattern having a plurality of first touch pads connected in series; and a touch sensor for applying a clock signal to one terminal of the first touch pattern, receiving a first delayed clock signal from the other terminal of the first touch pattern, and generating contact position data corresponding to a contact position of an object using a difference in delay time between the clock signal and the first delayed clock signal. Thus, since the plurality of touch pads are connected in series, the contact position of the entire touch panel can be sensed with only one touch sensor, and the touch pad has a greater area than the connection line for a distinguished difference in resistance between the touch pad and the connection line, such that the contact position can be accurately detected. | 05-05-2011 |
20110175626 | PORTABLE DEVICE WITH PROXIMITY SENSORS - A portable device with a proximity sensor is provided. The portable device with a proximity sensor of the present invention includes a shielding plate for shielding impedance applied in a direction opposite to the direction that the proximity sensor detects the proximity such that the proximity sensor is not affected by a change in the surrounding environment and can detect the proximity at the same sensitivity at all times. Moreover, when the portable device is placed upside down on a conductive surface that causes low impedance, a proximity sensor placed adjacent to the conductive surface is deactivated to prevent malfunction. | 07-21-2011 |
20110199327 | TOUCH SENSOR DEVICE - A touch sensor device is provided. The touch sensor device includes a touch panel including a plurality of touch mark-keys indicating a position touched by a touch object, a plurality of first touch pads disposed at positions corresponding to the plurality of touch mark-keys of the touch panel and generating touch information of the touch object as a first electrical signal, a plurality of second touch pads disposed between the plurality of first touch pads and generating touch information of a conductive material on the touch object as a second electrical signal, and a touch sensing unit receiving the first electrical signal, outputting a plurality of sensing signals to allow an electronic device to perform predetermined operations corresponding to the touched touch mark-keys, and determining whether the touch of the touch object is a normal one using the first and second electrical signals. | 08-18-2011 |
20110210934 | TOUCH PANEL, AND INPUT DEVICE INCLUDING THE SAME - Provided are a touch panel and an input device. The touch panel includes a plurality of first touch pad groups disposed in a first direction and having a plurality of first touch pads disposed in the first direction and extending in a second direction. Here, the first touch pads disposed at the same position in the respective first touch pad groups are connected in common with a corresponding one of a plurality of first channels, a first input signal is applied to one of the first touch pads of each first touch pad group, and the first touch pads receiving the first input signal are connected with the first channels, respectively. | 09-01-2011 |
20110227823 | PUCK-TYPE POINTING APPARATUS, POINTING SYSTEM, AND POINTING METHOD - Provided are a puck-type pointing device, a pointing system including the same, and a pointing method thereof. The puck-type pointing device includes a movement detection unit detecting information regarding touch and movement of a puck by a touch object and outputting a movement detection signal, a first signal processing unit receiving the movement detection signal, removing noise, and outputting a first puck movement signal after a first period of time, a second signal processing unit receiving the movement detection signal, removing noise, and outputting a second puck movement signal after a second period of time which is shorter than the first period of time, and a puck movement signal transmitting unit transmitting or cutting off the first puck movement signal according to the movement information in response to the second puck movement signal. | 09-22-2011 |
20120146944 | INPUT APPARATUS AND METHOD FOR DETECTING THE CONTACT POSITION OF INPUT APPARATUS - Provided are an input device and a touch position detecting method thereof. The input device includes a touch panel having a plurality of first touch patterns, each of which is disposed in a first direction and outputs a first touch signal at a touch position of the first direction, and a plurality of second touch patterns, each of which is disposed in a second direction perpendicular to the first direction and outputs a second touch signal at a touch position of the second direction, and a touch sensor, where the touch sensor calculates a coordinates of touch position based on the first and second touch signals and storing the coordinates of touch position according to time, wherein the touch sensor performs a first sensing operation of detecting a coordinates of real touch position using the coordinates of touch position previously stored when the number of the touch position is at least two and a time difference between the at least two touch positions is greater than a reference value and performs a second sensing operation of detecting a coordinates of real touch position using an impedance of the touch pattern which vary depending on the touch position when a number of the touch position is at least two and the elapsed time between touching of the at least two touch positions is smaller than or equal to the reference value. | 06-14-2012 |
20120194476 | TOUCH PANEL CAPABLE OF MULTI-TOUCH SENSING, AND MULTI-TOUCH SENSING METHOD FOR THE TOUCH PANEL - Provided are a touch panel capable of detecting a multi-touch and a multi-touch detecting method thereof. Since the touch panel and the multi-touch detecting method thereof can measure and store each resistance of a plurality of first and second touch pads varied depending on the touch position of a contact object and capacitance of the contact object using a variation in detection time to determine an actual touch position of the contact object, it is possible to determine the actual touch position even when a ghost pattern occurs. | 08-02-2012 |
20120200530 | INPUT DEVICE, AND METHOD FOR DETECTING THE CONTACT POSITION OF THE DEVICE - Provided are an input device and a touch position detecting method thereof The input device includes a touch panel configured to generate a plurality of different measurement values depending on touch positions and output the plurality of measurement values, a clustering part configured to receive the measurement values, and output clustered measurement values including at least one cluster from the plurality of measurement values using a threshold value, and a center point calculating part configured to receive the clustered measurement values, and calculate coordinates of each cluster using a weighted average to output the coordinates. | 08-09-2012 |
20130214798 | CAPACITANCE MEASUREMENT CIRCUIT AND METHOD FOR MEASURING CAPACITANCE THEREOF - Provided are a capacitance measurement circuit and method. In the capacitance measurement circuit and method, a control unit generates a control code a predetermined number of times according to designated rules regardless of the level of a sensing signal, and the control code is changed to measure a capacitance value when the level of the sensing signal corresponding to the generated control code is determined to be normal. Consequently, the measured capacitance value is hardly affected by noise and can be stably output. | 08-22-2013 |