Abstract:
A temperature sensing device includes a temperature-voltage converter that outputs a first voltage, having a zero temperature coefficient that does not vary with a temperature, and a second voltage having a negative temperature coefficient varying in inverse proportion to the temperature. A multiplexer alternately outputs the first voltage and the second voltage depending on a transition signal. A temperature sensor alternately receives the first voltage and the second voltage and senses the temperature depending on a ratio of the first voltage and the second voltage.
Abstract:
A method, and a mobile device adapted thereto, verifies a user and executes applications via handwriting recognition. The method of controlling a mobile device includes entering a lock state, detecting a user's input, verifying a user based on the input and searching for an instruction corresponding to the input, and performing at least one of maintaining or releasing the lock state and which performs an operation corresponding to the instruction, based on user verification result and the instruction search result.
Abstract:
A method, and a mobile device adapted thereto, verifies a user and executes applications via handwriting recognition. The method of controlling a mobile device includes entering a lock state, detecting a user's input, verifying a user based on the input and searching for an instruction corresponding to the input, and performing at least one of maintaining or releasing the lock state and which performs an operation corresponding to the instruction, based on user verification result and the instruction search result.
Abstract:
A direct-current (DC)-DC converter includes a converting circuit including an inductor element. The converting circuit is configured to generate an output voltage from an input voltage based on a switching operation. An inductor current emulator is configured to adjust at least one parameter for changing a current peak value of the inductor element in response to a change in a level of the input voltage and is configured to generate an internal voltage based on the at least one parameter, which is adjusted. The inductor current emulator is configured to generate a control signal for controlling the switching operation such that current of the inductor element has a pattern corresponding to a pattern of the internal voltage.
Abstract:
A power manager circuit is provided. The power manager circuit includes a bandgap reference circuit, first and second monitoring circuits, and a reference buffer. The bandgap reference circuit generates a first voltage, based on an external voltage that is external to the power manager circuit. The first monitoring circuit determines a logical value of a first alarm signal, based on whether a first voltage level of the first voltage is within a first range. The reference buffer generates a second voltage, based on the first voltage. The second monitoring circuit determines a logical value of a second alarm signal, based on whether a second voltage level of the second voltage is within a second range.
Abstract:
Disclosed is an electronic device, which includes an amplifier circuit that receives a feedback voltage and a reference voltage and amplifies a difference between the feedback voltage and the reference voltage to output an amplified difference voltage, an analog-to-digital converter that converts the amplified difference voltage to a digital code including two or more bits, and low-dropout (LDO) regulators that outputs output voltages based on the digital code. Each of the LDO regulators includes power transistors outputting a corresponding output voltage of the output voltages, drives one of the power transistors in a switching state, and drives each of remaining power transistors in a turned-on state or a turned-off state.
Abstract:
A display apparatus includes a display, a plurality of light emitting elements that emit light of different wavelengths and a plurality of light receiving elements, and a processor that identifies intensities light emitted by the light emitting elements and received by the light receiving elements to identify a pen color of a touch pen on a basis of the intensities.
Abstract:
A method, and a mobile device adapted thereto, verifies a user and executes applications via handwriting recognition. The method of controlling a mobile device includes entering a lock state, detecting a user's input, verifying a user based on the input and searching for an instruction corresponding to the input, and performing at least one of maintaining or releasing the lock state and which performs an operation corresponding to the instruction, based on user verification result and the instruction search result.