Abstract: A refrigerator may include a storage compartment, an inner door which comprises an opening having a size corresponding to a size of the storage compartment, a plurality of door guards, and an outer door which open and close the storage compartment, wherein the inner door comprises a control unit may control an internal environment of the storage compartment.

Abstract: A technology to sense a touch input by the alternate feedback connection of two feedback capacitors connected to a single operational amplifier is disclosed.

Abstract: Provided is a touch chip including a touch input detector and a compensator, wherein an input terminal of the touch input detector and an output terminal of the compensator are together connected to a touch input sensing electrode, and a direction change of a first current flowing through the input terminal of the touch input detector and a direction change of a second current flowing through the output terminal of the compensator are performed through synchronization.

Abstract: Provided is a touch chip including a touch input detector and a compensator, wherein an input terminal of the touch input detector and an output terminal of the compensator are together connected to a touch input sensing electrode, and a direction change of a first current flowing through the input terminal of the touch input detector and a direction change of a second current flowing through the output terminal of the compensator are performed through synchronization.

Abstract: A technology to sense a touch input by the alternate feedback connection of two feedback capacitors connected to a single operational amplifier is disclosed.

Abstract: A dual mode converter is provided that may be operated as a variable-frequency, naturally-commutated controller in a Zero-Voltage-Switching mode and as a fixed-off-time controller in a Fixed-Off-Time mode. The converter includes four functional elements. A reference and biases element generates voltage references and biases utilized to determine various signal states. A Timing element generates a fixed off time signal and a voltage ramp signal utilized to create the dual modes of operation. A Catastrophic-Event element detects events that cause the converter output be inhibited and the controller to be restarted. A Mode Detection and Pulse Width Modulation element determines the mode of operation for the converter based on signal inputs from the other functional elements and modulates the output accordingly. In a primary mode, the controller utilizes variable frequency operation to deliver primary power. In a standby mode, the controller utilizes fixed frequency operation to provide low power (less than 5W).