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: 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: Provided are an apparatus and method by which a touch sensor controller of a touch screen apparatus may efficiently process a touch signal in response to a touch event to reduce power consumption of the entire system. An apparatus including a touch screen includes a touch sensor controller configured to generate a touch signal in response to a touch event and process the touch signal and a system controller configured to receive the touch signal from the touch sensor controller and perform an operation in response to the touch signal. The touch sensor controller determines whether the touch event is a multi-touch, generates touch signals having different types depending on whether the touch event is the multi-touch, and transmits the touch signals to the system controller. Thus, power consumption of the apparatus including the touch screen may be efficiently reduced.

Abstract: Provided are an input device and a touch position detecting method thereof. The input device includes a touch panel part configured to output a measurement value according to a touch position of a touch object; and a touch position detecting part configured to generate a raw frame based on the measurement value and generate at least one cluster with reference to a cell having a maximum value in the raw frame, wherein, when there is an overlapped cell simultaneously included in a plurality of clusters, the touch position detecting part performs a clustering operation of dividing a value of the overlapped cell into values of the plurality of clusters according to values of cells adjacent to the overlapped cell and generating the at least one cluster, and calculates coordinates of the touch position with respect to each of the at least one cluster.

Abstract: 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.

Abstract: An optical pointing device and a control method thereof are provided. The optical pointing device includes: an illumination unit for illuminating light on a working surface, and generating light in a predetermined code in response to a code signal; a control unit for detecting an image on the working surface to calculate a movement value, outputting movement information in response to an input signal inputted from the outside and the calculated movement value, intermittently outputting a code generation signal, and turning off the illumination unit when the optical pointing device is separated from the working surface in response to a determination signal; and a determination unit for outputting the code signal in response to the code generation signal, detecting light in the predetermined code to thus determine whether or not the optical pointing device is separated from the working surface, and outputting the determination signal depending on the determination result.

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 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: 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 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 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: A wireless communication system and a channel changing method thereof are provided. The wireless communication system which includes a plurality of channels, uses one of the plurality of channels as a specific channel, and uses another channel of the plurality of channels as a communication channel, includes: a base terminal for obtaining the one of the plurality of channels as an alternative channel, generating a channel change command including information on the alternative channel, and transmitting the command on a specific channel, when there is a data error received on the communication channel; and a wireless input device for resetting the alternative channel as a new communication channel and performing wireless communication on the communication channel which was reset, after obtaining the information on the alternative channel by receiving the channel change command from the specific channel.

Abstract: 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.

Abstract: An optical pointing device is provided. The optical pointing device includes: a base plate; a circuit board disposed on one side of the base plate, and having a light source irradiating light and a sensor receiving a light reflected from a working surface; an optical structure disposed between the base plate and the circuit board and having a light path guiding the light irradiated from the light source to the sensor; and a light blocking mean disposed on the light path to block the light path when the base plate is separated from a predetermined position.

Abstract: Provided is a human input apparatus and method for calculating a movement value thereof. The human input apparatus includes a plurality of touch sensors for varying and outputting output signals by direct contact, a sensing unit for receiving the output signals in parallel from the plurality of touch sensors and generating input data in response to the output signals, and a movement value calculating means for extracting valid input data from the input data and operating on and outputting a movement value using operated-on data comparing the valid input data with reference data and the reference data. Accordingly, a mechanical device mounted on the human input apparatus in order to express movement can be replaced by an electronic device employing the touch sensors, so that it is possible not only to prevent malfunction caused by noise or abrasion of a mechanical switch, but also to reduce power consumption and production cost. Further, it is advantageous for downsizing.