Abstract:
A switch, a negative resistance unit, and a differential voltage controlled oscillator using the same are provided to minimize an implementation area. A differential voltage-controlled oscillator(1000) includes a resonator(200), first and second output terminals, and a negative resistance unit(100). The resonator generates the oscillation frequency corresponding to the inputted voltage. The first and second output terminals are connected to one end and other end of the resonator and output the oscillation frequency. The negative resistance unit is operated by corresponding to the oscillation frequency. The negative resistance unit includes the switch. The switch includes a first signal line, a second signal line, a source electrode, a first gate electrode, a second gate electrode, a first drain electrode, and a second drain electrode.
Abstract:
A semiconductor memory device for testing capacitive crosstalk defects between unit cells and a test method therein are provided to perform the test by detecting an AC current between the unit cells directly, by applying stress to a bit line in the semiconductor memory device. A plurality of unit cells(C0,C1) store data. A bit line test driving part(200) detects crosstalk between the plurality of unit cells by inputting a different test signal to a pair of bit lines connected to the plurality of unit cells in a test mode. The unit cell includes a latch for storing data, a first switch and a second switch. The first switch transmits the data stored in the latch to one of the pair of bit lines. The second switch transmits inverted value of the data to the other of the pair of bit lines.
Abstract:
PURPOSE: An apparatus of increasing a common mode rejection ratio and a method thereof are provided to improve a common mode rejection ratio by using three instrumentation amplifiers. CONSTITUTION: A measurement amplification device comprises a first instrument amplifier(110), a second instrument amplifier(120), and a third instrument amplifier(130). The first instrument amplifier has a positive input terminal(112) and a negative input terminal(114). A signal is inputted to the first instrument amplifier through the positive input terminal and the negative input terminal. The first instrument amplifier generates an output signal by performing a measurement amplifying function for the inputted signal. The second instrument amplifier has a positive input terminal(122) and a negative input terminal(124). The third instrument amplifier has a positive input terminal(132) and a negative input terminal(134).
Abstract:
PURPOSE: A device for generating an image with high resolution is provided to generate an image of higher resolution than the resolution of an input image by reducing a dictionary using a K-means clustering algorithm. CONSTITUTION: An image combining unit(230) searches an input low patch extracted from an input image, a low patch whose difference value from a reference value is small, and a high patch paired with the low patch from a first dictionary. The image combining unit searches a residual patch related to the searched high patch from a second dictionary. The image combining unit adds the searched high patch to the searched residual patch. The image combining unit generates an image whose resolution is higher than the resolution of the input image.
Abstract:
PURPOSE: A voltage controlled oscillator and a method for eliminating phase noise are provided to eliminate phase noise by blocking currents flowing into a variable frequency transistor in a voltage level conversion section. CONSTITUTION: A voltage controlled oscillator(10) comprises a first delay cell(110), a second delay cell(120), a third delay cell(130), and a fourth delay cell(140) consisting of a plurality of stages. The voltage controlled oscillator is composed of four stages. A first stage includes the first delay cell. A second stage includes the second delay cell. A third stage includes the third delay cell. A fourth stage includes the fourth delay cell. The first delay cell to the fourth delay cell can be formed into a ring shape.
Abstract:
본 발명은 구동전압에 따라 펌핑량을 조절하여 파워손실을 감소시켜 전하 펌핑 효율을 증대시켜 줄 수 있도록 하는 전하 펌핑 회로에 관한 것으로, 상기 전하 펌핑 회로는 전하 펌핑 회로에 구동전압을 센싱하여 전하 펌핑량을 결정하는 하나 이상의 센싱 신호를 발생하는 구동전압 센싱부; 상기 하나 이상의 센싱 신호의 신호값에 상응하는 진폭을 가지는 클럭 신호쌍을 발생하는 멀티 레벨 클럭 발생부; 및 상기 클럭 신호쌍을 충전하여 충전 전압을 발생하고, 상기 충전 전압을 상기 구동전압에 더하여 출력하는 전하 펌핑부를 포함할 수 있다.
Abstract:
본 발명에 따른 가변길이부호 디코딩 시스템의 디코딩 방법은, 픽쳐 그룹으로부터 프레임을 추출하는 단계, 추출된 프레임을 디코딩하는데 필요한 테이블 정보를 에스램에 로딩하는 단계, 및 상기 로딩된 테이블 정보를 이용하여 상기 추출된 프레임을 디코딩하는 단계를 포함한다. 프레임,가변길이부호,에스램
Abstract:
PURPOSE: A wave generating circuit is provided to reduce manufacturing costs by reducing the size of product and the complexity of a circuit which has saw tooth waves with various slopes. CONSTITUTION: A power generator(301) generates an input voltage in order to vary the slope of a saw tooth wave according to a voltage. A controller(302) controls a power generator. A source, a gate, and a drain of a first transistor(M6) are connected to a constant voltage, the gate of a second transistor(M5), and a constant current. The source and the drain of the second transistor are connected to the constant voltage and the source of the third transistor(M4), respectively. The source and the gate of the third transistor are connected to the drain of the second transistor and the power generator, respectively. The source and the gate of a fourth transistor(M3) are connected to the source of the third transistor and the gate of a fifth transistor(M2), respectively. The source and the gate of the fifth transistor are connected to the source of the third transistor and the gate of the fourth transistor, respectively. The drain and the gate of the sixth transistor(M1) are connected to the drain of the fifth transistor and a clock generator, respectively.
Abstract:
PURPOSE: An image sensing method of an image tracking chip is provided to contain an image tracking solution inside a chip by drastically reducing an image frame memory size through a sub-sampling and a timing sharing method. CONSTITUTION: Image data converted into a digital signal is inputted(S110). After luminance data is 1/2 sampled among the inputted video data, the sampled luminance data is stored(S120). A color sense among the inputted video data is outputted. While color sense data is outputted, the stored luminance data and presently inputted luminance data are compared(S130). A motion vector is outputted by calculating movement of an object(S140).
Abstract:
A method for creating a pixel block and a buffering apparatus and method using the same are provided to create data blocks by unit to create block information, and determine whether to transmit pixel data using the created block information, thereby reducing the amount of data transmission and performing buffering without unnecessary operation. A method for creating a pixel block comprises the following steps of: storing the number of pixels included into a block and the shape information of the block(701); creating pixel blocks based on the reference information(702); generating block information about the block and transmitting the generated block information to a z-buffering apparatus(703); checking whether the z-buffering apparatus requests the transmission stoppage of pixel depth values(704); transmitting the pixel depth values of the block in order if the transmission stoppage of the pixel depth values is not requested(705); and closing the pixel block generation if there is a residual block(706); and selecting a next block if there is the residual block(707).