Abstract:
Disclosed herein is a high-speed I/O circuit for die-to-die interconnect for suppressing an overshoot and an undershoot. A data reception circuit includes a reception circuit configured to convert a reception signal received from an interconnect into a digital signal, a first clipper circuit configured to suppress an overshoot of the reception signal based on current extraction, and a second clipper circuit configured to suppress an undershoot of the reception signal based on current supply.
Abstract:
Disclosed is an ultra-wide band (UWB) radar device including a first antenna circuit including a first transmission circuit, a first reception circuit, a first oscillator that supplies a first clock signal to the first transmission circuit and the first reception circuit, and a first frequency counter, a second antenna circuit including a second transmission circuit, a second reception circuit, a second oscillator that supplies a second clock signal to the second transmission circuit and the second reception circuit, and a second frequency counter, and a controller that detects the target. The controller corrects a frequency error between the first clock signal and the second clock signal and compensates for a synchronization error between the first antenna circuit and the second antenna circuit.
Abstract:
Disclosed herein are a duty cycle monitoring method and apparatus for a memory interface, including receiving a clock signal as input and generating a first delay time offset and a second delay time offset, receiving the clock signal and the first delay time offset and then outputting a first delayed signal, receiving the first delayed signal and the second delay time offset and then outputting a second delayed signal, receiving the clock signal and the second delayed signal and then outputting a delay value corresponding to a half-period of the clock signal, and monitoring, based on the first delayed signal, whether a duty cycle of the clock signal conforms to a duty cycle specification.
Abstract:
The present disclosure relates to a frame grabber, an image processing system, and an image processing method. A frame grabber according to an embodiment of the inventive concept includes a plurality of decoders, a plurality of image controllers, a plurality of memories, a synchronization controller, and a synchronization memory. The plurality of decoders generate a plurality of image data by decoding a plurality of image signals. The plurality of image controllers generate a plurality of pixel data and a plurality of frame information data on the basis of the plurality of image data. The plurality of memories store the plurality of pixel data. The synchronization controller receives the plurality of frame information data, and generates synchronization data on the basis of the plurality of frame information data. The synchronization memory stores the frame information data and the synchronization data.
Abstract:
Provided is a pulse noise suppression circuit. The pulse noise suppression circuit includes a filter circuit converting an input signal of a pulse type into an increasing or decreasing filter signal, a level reset circuit resetting the filter signal in response to the input signal and an output signal and an output circuit converting the filter signal into the output signal of a pulse type, wherein the level reset circuit resets the filter signal to have a high level when the input signal and the output signal all have a high level, and resets the filter signal to have a low level when the input signal and the output signal all have a low level.
Abstract:
Disclosed herein is an apparatus for adjusting a reference voltage. The apparatus may include a gate signal generation unit for generating an RDQS gate signal, a reference voltage generation unit for setting a reference voltage based on the RDQS gate signal, and a reset counter for holding a voltage at the time at which the RDQS gate signal becomes low when the RDQS gate signal is not applied to the reference voltage generation unit for a specific time period.
Abstract:
The present disclosure relates to a microphone driving device and a digital microphone including the same. A microphone driving device according to an embodiment of the inventive concept includes a voltage-to-current converter, a current-to-voltage converter, an analog-to-digital converter, a digital amplification unit, and a gain controller. The voltage-to-current converter converts an acoustic signal to an output current signal based on a gain control signal. The current-to-voltage converter converts the output current signal to an amplified voltage signal. The analog-to-digital converter converts the amplified voltage signal to a digital signal. The digital amplification unit amplifies the digital signal to an amplified digital signal based on the gain control signal. The gain controller generates a gain control signal. The microphone driving device and the digital microphone including the same according to the inventive concept may have a wide dynamic range and reduce the influence of noise.
Abstract:
Provided is an analog-to-digital converting device. The analog-to-digital converting device may include a determination circuit that determination whether a reference digital signal or a determination digital signal obtained by conversion of a reference voltage or a determination voltage matches a test pattern for the reference voltage, and it is possible to monitor whether the analog-to-digital converting device normally operates, according to whether there is matching.
Abstract:
Disclosed herein is a reference voltage calibration apparatus in a memory interface. The reference voltage calibration apparatus includes a first low-pass filter configured to receive a clock signal, a second low-pass filter configured to receive an inverted clock signal that is an inverted signal of the clock signal, a first comparator configured to compare an output of the first low-pass filter with a reference voltage, a second comparator configured to compare an output of the second low-pass filter with the reference voltage, an up/down counter configured to count upward or downward from output values of the first comparator and the second comparator, respectively, and a digital-to-analog converter configured to convert an up/down counter value into an analog signal, and then output the reference voltage, wherein the digital-to-analog converter applies a calibration voltage based on the reference voltage to the first low-pass filter and to the second low-pass filter.
Abstract:
Disclosed is a receiver of a radar device, which includes a sampling circuit that receives a reflected pulse signal having a first period reflected from a detection target and samples the reflected pulse signal as a first received signal in response to a clock signal having a second period equal to the first period, an integration circuit that, in response to the clock signal, generates an analog integration signal based on the first received signal and a control signal, a comparison circuit that, in response to the clock signal, adjusts a count value and the control signal based on a result of comparing the analog integration signal with a reference signal and outputs the control signal to the integration circuit, and an ADC circuit that converts the analog integration signal into a digital integration signal.