Abstract: An optical pointing device includes: an image obtaining part for continuously obtaining an image on a work surface as a sample image; a movement value calculator for comparing the sample image with the previously obtained image to calculate and output a movement value; a button selection signal generator for outputting a button selection signal corresponding to a specific reference pattern, when the sample image is the same as the specific reference pattern of a plurality of reference patterns; and a controller for providing the button selection signal and the movement value to a computing device when the button selection signal is transmitted from the button selection signal generator, and providing the movement value only to the computing device when the button selection signal is not transmitted from the button selection signal generator.

Abstract: 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.

Abstract: 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.

Abstract: An apparatus and method for searching and displaying data are provided.

Abstract: 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.

Abstract: A sensor, a sensing method of the sensor, and a filter of the sensor are provided. The sensor includes a sensing data output unit configured to output sensing data that varies depending on touch or proximity of an object, and a determiner configured to compare a threshold value with the sensing data to recognize touch or proximity, vary a first strength value indicating the sensing data in a state of no touch or no proximity and a second strength value indicating the sensing data in a state of touch or proximity, vary the threshold value using the first and second strength values, and output an output signal indicating touch or proximity.

Abstract: A touch sensor and a signal generation method thereof are provided.

Abstract: 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.

Abstract: An optical pointing device and a power supply semiconductor device therefore are provided. The optical pointing device includes at least one power supply voltage drop portion, wherein each of the power supply voltage drop portion comprises: a voltage-drop regulator for outputting a dropped power supply voltage; a first reference voltage generator for generating a first reference voltage; a first voltage division controller for outputting first and second drop voltage division control signals according to the moving velocity; a first voltage divider for outputting a first varied division voltage in response to the first and second drop voltage division control signals; a first comparator for comparing the level of the first varied division voltage with the level of the first reference voltage to output a first comparison output signal; and a first switch controller for dropping the output voltage of the voltage-drop regulator in response to the first comparison output signal.

Abstract: Provided are a human interface device and a wireless communication method thereof. The wireless communication method of the human interface includes the steps of: setting up an occupancy channel of the host digital terminal and the wireless input unit by communicating data for setting up the occupancy channel through the emergency channel; transmitting, at the wireless input unit, operation data through the occupancy channel, and receiving, at the host digital terminal, the operation data; and when the operation data is not generated until a predetermined time lapses, enabling the wireless input unit and the host digital terminal to operate in an operation standby state, and confirming whether there is interference on the occupancy channel. Accordingly, efficiency of a frequency band is increased, and cost and size of the product can be reduced.

Abstract: 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.

Abstract: 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.

Abstract: Provided are a communication system and a method of restoring the communication system. The communication system includes a master device for transmitting a reference clock through a clock line, transmitting and receiving data through a data line, and requesting and receiving input data and error detection data, and a slave device for detecting human touch input data, transmitting and receiving the data in synchronization with the reference clock or generating and transmitting the input data, and transmitting the error detection data in response to the request for error detection data. Here, the master device compares stored error detection data with the received error detection data and initializes the slave device when the stored error detection data is not the same as the received error detection data.

Abstract: Provided are an apparatus using a battery and a method of detecting a time to change/recharge the battery in the apparatus.

Abstract: 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.

Abstract: Provided are an automatic impedance adjuster and a control method thereof.

Abstract: 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.

Abstract: Provided are a serial communication system and a method of granting IDs using the system. The serial communication system includes a control unit for transmitting a clock signal via a first communication line and transmitting data including a sub-identification (sub-ID) via a second communication line; and a plurality of cascade-connected semiconductor devices to which the same device ID is granted, wherein each semiconductor device includes a switch for connecting an input terminal and an output terminal in response to a turn-on signal, and stores the data including the sub-ID in response to the clock signal and turns on the switches to sequentially store the sub-ID.

Abstract: An optical position tracking device and a method of testing the same are provided. The device includes: a controller for generating at least one test operation signal in response to a command signal; a test signal generator for generating a test signal during a test operation in response to the test operation signal; a motion calculator for receiving the test signal during the test operation and performing operations in response to the test operation signal to output an output signal; and an output signal analyzer for determining whether the output signal is correct during the test operation in response to the test operation signal to output a result signal. Thus, the complexity of the method of testing the optical position tracking device can be markedly reduced and it is unnecessary to employ a high-performance test apparatus.

Abstract: 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.