Abstract: A touch screen controller for cancelling an offset capacitance of a capacitive touch screen panel includes a code generator configured to generate a time-invariant digital code and a time-variant digital code during an offset cancellation time. A switched-capacitor array converts the time-invariant digital code and the time-variant digital code into an amount of electric charges corresponding to the offset capacitance.

Abstract: A touch panel controller includes a signal driver charging a plurality of sensor lines extending in a direction with the same charge, by applying a driving signal to one sensor line of sensor lines and applying a mirrored driving signal mirrored from the driving signal to the remaining sensor lines of the sensor lines, and a sensor sensing a change in capacitance from the sensor lines, respectively.

Abstract: A touch sensor controller may include a transmitter configured to output a driving signal to sensor lines of a touch panel, a charge amplifier configured to generate and output a voltage signal by using a charge generated in the sensor lines, a sampling circuit including a first sampler and a second sampler for detecting the voltage signal, and a logic circuit configured to determine whether the transmitter is operating according to a magnitude of a noise signal included in the voltage signal, and, in response to an operation of the transmitter being interrupted, control one of the first sampler and the second sampler to sample the voltage signal according to a sign of the noise signal.

Abstract: A touch screen controller controlling a capacitive touch screen includes a first comparator that compares a reference signal with a sensing signal, and generates a first output signal. The capacitive touch screen includes capacitive touch sensors connected to a sensing line and a drive line, and that sense a touch event. The sensing signal is output from the sensing line. The touch screen controller further includes a filter that generates a second output signal by integrating the first output signal in each sensing cycle of the filter, an analog-to-digital converter that converts the second output signal to a digital signal, and a controller that determines at least one of whether a noise is generated and whether the touch event is generated based on a reference digital signal and the digital signal, and that adjusts the number of the sensing cycles of the filter based on a result of the determination.

Abstract: A touch controller is provided. The touch controller includes a driving circuit configured to mask some pulses of a first pulse signal having a certain frequency to generate a second pulse signal, and supply the second pulse signal to a touch panel as a driving signal and a sensing circuit configured to receive a sensing signal generated by the touch panel based on the driving signal and generate touch data, based on the sensing signal.

Abstract: A touch screen controller for cancelling an offset capacitance of a capacitive touch screen panel includes a code generator configured to generate a time-invariant digital code and a time-variant digital code during an offset cancellation time. A switched-capacitor array converts the time-invariant digital code and the time-variant digital code into an amount of electric charges corresponding to the offset capacitance.

Abstract: A touch screen controller is provided. The touch screen controller includes: an offset cancellation circuit configured to cancel offset capacitance of a touch screen panel including a first channel and a second channel crossing the first channel, the offset cancellation circuit connected to the touch screen panel through a sensing node; a charge amplifier configured to generate a sensing voltage from a sensing signal output from the touch screen panel, the charge amplifier including an amplifier having a first input terminal connected to the sensing node and a second input terminal to which an input voltage is applied; and a channel driver configured to provide a driving voltage, which is equal to or greater than the input voltage, to the second channel in a self capacitance sensing mode for the first channel.

Abstract: A touch screen controller controlling a capacitive touch screen includes a first comparator that compares a reference signal with a sensing signal, and generates a first output signal. The capacitive touch screen includes capacitive touch sensors connected to a sensing line and a drive line, and that sense a touch event. The sensing signal is output from the sensing line. The touch screen controller further includes a filter that generates a second output signal by integrating the first output signal in each sensing cycle of the filter, an analog-to-digital converter that converts the second output signal to a digital signal, and a controller that determines at least one of whether a noise is generated and whether the touch event is generated based on a reference digital signal and the digital signal, and that adjusts the number of the sensing cycles of the filter based on a result of the determination.

Abstract: A semiconductor device includes a touch screen panel including a plurality of hover sensors configured to perform self-capacitance sensing. The semiconductor memory device includes a driver configured to provide a plurality of driving signals to the touch screen panel. The semiconductor memory device includes an encoder configured to encode the plurality of driving signals from the driver and provide the encoded plurality of driving signals to the touch screen panel. The semiconductor memory device includes a sensor configured to sense a hover input from the touch screen panel based on the encoded plurality of driving signals.

Abstract: A programmable gain amplifier (PGA) circuit includes a first input resistor coupled between a first input node and a first summing node and a second input resistor coupled between a second input node and a second summing node. The PGA circuit further includes a first variable reference resistor coupled between a third input node and the first summing node, a second variable reference resistor coupled between a fourth input node and the second summing node, and an operational amplifier having first and second inputs coupled to respective ones of the first and second summing nodes and first and second outputs coupled to respective ones of the first and second output nodes. At least of the first and second reference resistors may include an R-2R ladder circuit.

Abstract: A touch sensing device includes a touch panel and a receiving unit. The touch panel generates first to third receiving signals corresponding to a touch occurring at the touch sensing device. The receiving unit is connected to the touch panel through first to third receiving lines to receive the first to third receiving signals through the first to third receiving lines, respectively. The receiving unit includes a differential signal generator for excluding a first common signal common to the first and second receiving signals from each of the first and second receiving signals to generate first differential signals when a first touch sensing operation is performed. The differential signal generator excludes a second common signal common to the second and third receiving signals from each of the second and third receiving signals to generate second differential signals when a second touch sensing operation is performed.

Abstract: Disclosed is a wine bottle cap assembly. When a resealed wine bottle is stored standing upright, an oxygen absorbent is located below a lower part of a cap body while being distanced from the cap body. Thus, oxygen, which is heavier than nitrogen and sinking downward, is rapidly removed. Even when the wine bottle is stored lying down, the oxygen absorbent does not sink into the wine, so oxygen absorption is efficiently performed.

Abstract: A software keyboard system using the trace of a stylus and a method of recognizing key codes in accordance with the keyboard system are provided.

Abstract: There is provided a method for replacing a program stored in portable information terminal including a communication unit for transmitting to and receiving data from an external device, a memory unit for temporarily storing a new program and a utility program operating to carry out the replacement of a prestored program, which are received from the communication unit, and a program storage unit for storing the prestored program and replacing the prestored program with the new program. The method comprises the steps of receiving the new and utility programs via the communication unit from an external, storing the new and utility programs in the memory unit, and replacing the prestored program stored in the program storage unit with the new program, using the utility program. As described above, the program of a portable information terminal is replaced using a communication unit instead of an external card, so that the program can be replaced at low cost.

Abstract: A password processing apparatus and method is provided in which a generic password or master password, in addition to an actual password, is written and verified by using an external memory device. The password processing apparatus includes an internal memory for storing an input password and a condition to read or record a generic password, a detachable storing medium, and an adaptor for writing data to and reading data from the detachable storage medium. A controller stores the password and the condition to read or record the generic password in the memory, stores the generic password in the storage medium according to the condition if the storage medium is connected to the adaptor, and compares the generic password stored in the storage medium with an input password if the input password is different from the password stored in the memory.

Abstract: A portable information terminal is provided. The terminal includes a touch screen panel having an activation area and an activating unit. The activation unit activates the portable information terminal when the terminal is turned off and an activating position on the activation area is pressed for a predetermined time. The activating unit contains a press position sensor, a press timer, and a controller. The press position sensor senses if a panel position on touch screen panel is pressed and determines a location of the panel position on the touch screen panel to generate corresponding press position data. The press timer determines if the panel position is pressed for at least a predetermined time to generate corresponding press time data.

Abstract: A method and apparatus for processing a radio paging message in portable terminal, which is capable of receiving a message, where the terminal apparatus comprises a memory and a touch panel which includes an indicator at a fixed site. The method comprises: receiving the radio paging message; interrupting a current operation in response to the reception of the message, storing the received message in the memory, recording that the stored message is not read, and resuming the interrupted operation; accessing the memory and controlling the indicator to periodically flicker with the presence of the unread data; and reading and displaying the corresponding data with the detection of an indicator touch responding to the indicator flickering, and controlling the indicator to cease flickering in accordance with the detection of the indicator touch.

Abstract: A portable information terminal capable of updating a program using a PC card, and a method for updating a program using the same, are provided. The portable information terminal is capable of updating a pre-stored program using a card in which a new program to be updated and a utility program for performing an updating operation are stored. The terminal includes a card unit for reading or writing the new program and the utility program stored in the card, a program storage unit for replacing the pre-stored program with the new program stored in the card and storing the new program, a memory for temporarily storing the new program and the utility program read by the card unit, and a controller for controlling the execution of the utility program stored in the memory so that the new program stored in the memory can be stored in the program storage unit. Thus, a program is correctly updated without an additional special device.