Abstract:
An oscillator includes a comparison voltage generating circuit, a comparing circuit and a clock switching circuit. The comparison voltage generating circuit is driven by a power source voltage, and generates comparison voltages that change in response to clock signals which have a frequency that varies in inverse proportion to the power source voltage and a first reference voltage. The comparing circuit compares levels of the comparison voltages to a second reference voltage and outputs logic signals having logic levels as a result of the comparison. The clock switching circuit outputs the clock signals which have a frequency that varies in inverse proportion to the power source voltage, in response to the logic signals.
Abstract:
A steering column having a variable impact-absorbing structure includes an inner column tube, an outer column tube disposed at an outer circumferential part of the inner column tube, a guide fixed to an outer circumferential surface of the outer column tube, a strap having a deformable part fitted into the guide, a pin inserted through the strap and configured to be slidable into the guide, a solenoid that drives the pin, and a control unit that controls the solenoid. The steering column further includes a sensor that senses a state of a driver and outputs the sensing result to the control unit, wherein the strap comprises a plurality of parallel wires, one end of each wire being opened and the other end of each wire being connected to each other in a closed state, and a suspending end that is bent in a loop shape is formed on the closed end to enable the inner column tube to be suspended thereon.
Abstract:
An oscillator includes a comparison voltage generating circuit, a comparing circuit and a clock switching circuit. The comparison voltage generating circuit is driven by a power source voltage, and generates comparison voltages that change in response to clock signals which have a frequency that varies in inverse proportion to the power source voltage and a first reference voltage. The comparing circuit compares levels of the comparison voltages to a second reference voltage and outputs logic signals having logic levels as a result of the comparison. The clock switching circuit outputs the clock signals which have a frequency that varies in inverse proportion to the power source voltage, in response to the logic signals.
Abstract:
Circuits and methods for optimizing operating performance of an integrated circuit device within a maximum allowed current by varying a period of a clock signal based on an amount of current consumed by the integrated circuit device. In one aspect, an integrated circuit device includes a plurality of functional blocks, a power supply line which supplies an internal power supply voltage to the functional blocks, a voltage converter circuit which controls an amount of current supplied to the power supply line by comparing a reference voltage with the internal power supply voltage, and a clock generator circuit which generates a clock signal that is applied to the functional blocks. The clock generator circuit adjusts a period of the clock signal according to the amount of current supplied to the power supply line.
Abstract:
A pulsator with an improved structure having a punching function is used in a washing machine. The pulsator of the present invention is composed such that a rotating member has a guiding dimple formed on its upper end surface, and an elevating member has a guiding protrusion projected from the inner surface. According to this pulsator, non-symmetrical water flow and up-and-down water flow can be generated easily so that the entanglement of the washing articles can be minimized, and the washing is carried out effectively.
Abstract:
A method of operating a near field communication (NFC) device includes receiving, by the NFC device, a first signal from an NFC reader, transmitting, by the NFC device, a response to the first signal to the NFC reader and changing selectively, by the NFC device, a radio frequency (RF) configuration parameter associated with signal transmission operation during a signal transmission interval, based on determining whether the NFC reader recognizes the response.
Abstract:
Provided are a Radio Frequency IDentification (RFID) tag with a signal reception method. The RFID tag includes a demodulator that receives a read signal containing read data. The demodulator includes; a voltage generating circuit that provides a first voltage signal and a second voltage signal derived from the received read signal, an inverter that provides a data pulse signal indicative of the read data by inverting the second voltage signal using an inverting voltage defined in relation to the first voltage signal, and a buffer that recovers the read data by buffering the data pulse signal.
Abstract:
A memory system includes a memory and a memory controller operating to control the memory. The memory includes a random accessible memory including a memory cell array operable in a random access mode, a NAND flash memory, and a selection circuit making the memory controller operate either one of the random accessible memory or the NAND flash memory.
Abstract:
A repairable semiconductor memory device including a memory cell array having a first block to store first system data and a second block to store second system data identical to the first system data. A controller transmits the first system data to a memory unit in response to a reset signal output from a host and the second system data to the memory unit based on a fail detection signal generated by an ECC detection block. The ECC detection block determines whether the first system data is defective. When a defect is generated in the first system data during resetting of the semiconductor memory device, the first system data is repaired by supplying the second system data.
Abstract:
A buffer memory includes a memory cell array, a flag cell array, and a error correction block. The memory cell array has a plurality of word lines. Each of the plurality of word lines are electrically connected to a plurality of memory cells storing data. The flag cell array has a plurality of flag cells. Each of the plurality of flag cells is connected to each of the word lines and stores information that indicates whether error correction of the data has been performed. The error correction block performs error correction on the data output from the memory cell array in response to a command received through a host interface and flag data output from the flag cell array.