Abstract:
Provided is a touch cell structure having high detection sensitivity and accuracy, a touch panel using the same, and a touch input detection method. The touch cell structure includes: a conductive pad that forms an electrostatic capacitance with respect to a touch unit when a finger of a human body or the touch unit having an electrical characteristic similar to the finger approaches the conductive pad within a predetermined distance; a three-terminal type switching device whose input and output terminals are connected with the conductive pad and that is controlled to be turned on/off by a control signal that is applied to a gate terminal of the three-terminal type switching device, to thus charge or discharge the electrostatic capacitance formed between the touch unit and the conductive pad; and a capacitor C1 that is connected between the control terminal of the switching device and the conductive pad. A capacitor C2 is additionally connected between the conductive pad and the ground, in order to make a kick back difference between the switching device and the conductive pad more definitely. According to technical advantages, an electrostatic capacitance Ct formed between a touch unit and a conductive pad at the time of occurrence of a touch input is an important factor that determines a kick back, to thus make a great difference between output signals from a switching device due to a kick back difference depending upon whether or not a touch input exists. Thus, detection sensitivity and detection accuracy with respect to the touch input are very high, the touch input is not little influenced due to external noise, and the output signal in an analog form from the switching device is detected in a digital mode without being converted into a digital signal in an analog to digital (ADC) converter.
Abstract:
Disclosed herein is a control method of an induction heating cooker including detecting at least one heating coil occupied by a first container from among a plurality of heating coils, switching a plurality of inverter units so that a power level input by a user is applied to the detected at least one heating coil, determining, if the at least one heating coil occupied by the first container includes plural heating coils, whether or not output currents within a target output current range corresponding to the power level are present from among the output currents of the respective heating coils sensed by sensing units, and equally adjusting duty ratios of pulse width modulation signals applied to the inverter units of the respective heating coils until at least one of the output currents reaches the target output current range, if no output current within the target output current range is present.
Abstract:
A solenoid valve controlled by wireless communication, in which the operation of the valve is controlled by wireless communication, thereby reducing costs and labors necessary for installation and maintenance. The solenoid valve includes a valve body having an inlet port, through which fluid is introduced, and an outlet port, through which fluid is discharged; a plunger movably mounted inside the valve body to open or close one or both of the inlet and outlet ports; a solenoid, which drives the plunger to a position, in which the plunger opens or closes one or both of the inlet and outlet ports, when electric power is supplied; and a communication module provided on the valve body. The communication module receives a wireless control signal transmitted from outside and controls the electric power supplied to the solenoid valve depending on the wireless control signal.
Abstract:
Disclosed is an asymmetric thermoelectric module, which includes a plurality of first-type thermoelectric semiconductor elements, a plurality of second-type thermoelectric semiconductor elements, a plurality of pairs of assistant layers having different melting points and disposed on the upper and lower surfaces of the first-type and second-type thermoelectric semiconductor elements, and a pair of substrates.
Abstract:
An induction heating cooker including a temperature sensor disposed between a plurality of working coils which are uniformly disposed below a cooking table and a heat transfer member to transfer heat from the working coils adjacent to the temperature sensor to the temperature sensor, thereby improving productivity and space utilization.
Abstract:
An apparatus and method for controlling starting of a motor are disclosed. An exciting coil of a motor is excited by using a controller of an electronic refrigerator without having an extra excitation control circuit, to thereby simplify a component construction for controlling exciting of the motor and thus reduce complexity. The present invention includes: a main coil and an auxiliary coil (sub-coil); an exciting coil that generates an excitation current; a refrigerator control unit that outputs a control signal for controlling an application time of the excitation current when started; and a switch unit electrically connected with the exciting coil and supplying power to the exciting coil according to the control signal outputted from the refrigerator control unit.
Abstract:
Authentication system and method are provided. The authentication system includes: a server configured to provide at least two security levels and configured to transmit one of at least two security modules corresponding to the security level of a user terminal, via communications network, to the user terminal based, at least in part, upon an environment of the user terminal; and an authentication server communicatively linked with the server and configured to perform a user authentication in response to a user authentication request from the user terminal. Accordingly, various hackings can be prevented and the user authentication can be accomplished with user's convenience and security.
Abstract:
The present invention relates to a flame retardant rubber-modified styrene resin composition having excellent flame resistance for dripping without containing halogens and phenylene ether, which comprises A) 100 weight part of a rubber-modified polystyrene; B) 1˜10 weight part of a phosphoric ester compound; and C) 0.1˜10 weight part of an aliphatic amide compound. The flame retardant rubber-modified styrene resin composition of the present invention has flame resistance at the level of UL-94 V-2 and excellent impact resistance, heat resistance and fluidity.
Abstract:
Disclosed is a thermo-shrinkable polyester film in which shrinkage uniformity is ensured in a shrinking process thus realizing superior quality of the outer appearance without causing a poorly printed state, reducing the production cost of the shrinking process and improving the productivity.
Abstract:
There is provided a chip-type electric double layer capacitor comprising: a resin case having a housing space provided therein and formed of insulating resin and first and second external terminals inserted into the resin case by insert injection molding. Each of the external terminals has a first portion exposed to an outer surface of the resin case for external contact and a second portion exposed to an inner surface of the housing space for internal contact. a sealing portion includes a groove portion provided in the resin case along a circumference of at least one of the first and second external terminals and a resin filling the groove portion. An electric double layer capacitor cell is mounted in the housing space and electrically connected to the second portion of the first and second external terminals.