Abstract:
PURPOSE: A memory system comprising a plurality of DMA channels and an integrating management method for a plurality of DMA channels are provided to improve data transmission efficiency of a memory controller by the integrated management of multichannel memory controller and connected multiple DMA channels. CONSTITUTION: A memory controller(200) performs data transceiving operation with a memory(100). The memory controller comprises multiple channels which are physically separated each other. A DMA controller (300) is connected to the multiple channels of the memory controller and includes multiple DMA channels which are physically separated each other. The DMA controller performs data transceiving operation with the memory through the multiple DMA channels and the memory controller. An access module(400) connects the channels of the memory controller with the DMA channels each other.
Abstract:
PURPOSE: A low power consumption type semiconductor gas sensor is provided to improve gas sensing characteristics using low level semiconductor nano materials having high sensitivity characteristics at room temperature. CONSTITUTION: A low power consumption type semiconductor gas sensor comprises a membrane, a substrate(110) located on the lower part of the membrane and etched on the center area to expose the interval between the lower part of the membrane and the substrate, a heater(150) formed in the center area of the membrane and operated when desorbing gas adsorbed to a low level semiconductor nano material, an insulating membrane(170) formed on the membrane to cover the heater, a sensing electrode(180) formed in the center area of the insulating membrane, and a low level semiconductor nano material(190) formed on the sensing electrode.
Abstract:
PURPOSE: A polymer actuator and a fabrication method thereof are provided to solve difficulty of assembly after forming an electrode by using a shim in a flexible PCB. CONSTITUTION: A flexible PCB is manufactured by attaching a top electrode and a bottom electrode to the top and bottom of a support layer(110). The top side of the polymers and a top electrode plate of a flexible PCB are interlinked through plating to form a top electrode. The bottom side of the polymers and the bottom electrode plate of the flexible PCB to form a bottom electrode.
Abstract:
PURPOSE: A method for preparing titanium oxide nanotube cluster-graphite negative electrode active material of a one-dimensional structure for a lithium secondary battery is provided to ensure stable cycle property in a high speed charge-discharge. CONSTITUTION: A method for preparing titanium oxide nanotube cluster-graphite negative electrode active material of a one-dimensional structure for a lithium secondary battery comprises the steps of: (S11) performing hydrothermal synthesis of micro-sized spherical titanium oxide powder and micro-sized graphite powder in a strong alkali solution; (S12) controlling a pH value of hydrothermally synthesized titanium oxide nanotube cluster-graphite composite; and (S13) heat treating the titanium oxide nanotube cluster-graphite composite in which the pH value is controlled.
Abstract:
PURPOSE: An absolute difference operation device is provided to use one adder and one comparator, thereby performing absolute difference operation with a low logic surface load. CONSTITUTION: A comparator(410) compares the size between two integers. According to the comparing result, the first and the second selectors(420,430) respectively select/output one among two integers. An inverter(440) mending-process a selection result value of the second selector. An adder(450) adds 1 and a value which is mending-processes by the inverter and the selection result value of the first selector.
Abstract:
PURPOSE: A DMA controller with an interrupt control processor is provided to reduce interrupt control load of a main processors. CONSTITUTION: A DMA(Direct Memory Access) channel register bank(240) stores a DMA channel operation request and a DMA set point. An interrupt control processor(250) performs a control program stored in a program memory(220). A DMA channel control module(270) controls operation of a DMA channel(150) according to the DMA set value by responding to a DMA channel activation command. An interrupt/DMA request and cancel module(260) generates a release signal about an interrupt processed by the interrupt control processor.
Abstract:
PURPOSE: A micro-speaker and a manufacturing method thereof are provided to generate the sound pressure to the low band area by using the material like the polymer having the small Young modulus. CONSTITUTION: A micro speaker(100) comprises the Polymer diaphragm corresponding to loudspeaker, similarly, a cone paper. The micro-speaker comprises a plurality of piezoelectric cantilevers(110) corresponding to the voice coil driving the cone paper and the electrode(130) for transferring voltage to piezoelectric cantilevers. A piezoelectric layer is formed on a substrate. The upper electrode is formed on the piezoelectric layer. The Polymer diaphragm formed on the upper electrode passes through the piezoelectric layer and upper electrode. In order to fill in a hole defining one cantilever domain, the Polymer diaphragm is used.
Abstract:
PURPOSE: A multi channel data transfer device is provided to minimize repetitiveness of register setting according to a multi channel transfer, thereby reducing a control load by a processor. CONSTITUTION: A plurality of channel controllers(327_1~327_n) are respectively connected to a plurality of peripheral devices(331~33n). A plurality of control registers(326_1~326_n) stores setting data for controlling operation of each channel control device. A common register control unit(324) transfers a common setting data to whole or a part of the plurality of control register. The common setting data is commonly applied to whole or a part of the plurality of channel control device.
Abstract:
PURPOSE: An interrupt processing system is provided to improve the system efficiency by generating an interrupt signal only in a certain circumference. CONSTITUTION: Interrupt sources(241-24n) generate an interrupt signal. When the interrupt signal is activated, complex interrupt generators(231-23m) generate active complex interrupt signal. A logic operation unit generates the complex interrupt signal by performing an AND or OR operation according to a mode selection signal. Interrupt signal receivers detect the logic state of interrupt signals in consideration of a first control signal, and transfers the logic state to the operation unit selectively in consideration of the second control signal.
Abstract:
본 발명은 가변 블록 움직임 추정을 위한 SAD 계산 방법 및 장치에 관한 것으로 한번에 복수개의 현재 프레임 매크로 블록에 대한 SAD를 구할 수 있는 방법 및 장치에 관한 것이다. 본 발명은 적어도 하나의 PE가 행렬 형태로 배열되고 상기 행렬은 연속된 복수의 현재 프레임 매크로 블록에 포함되는 적어도 하나의 픽셀의 SAD 값을 동시에 계산하는 PE 배열부, 현재 프레임 매크로 블록 데이터, 참조 프레임 매크로 블록 데이터 및 참조 프레임 검색 영역 데이터를 포함하고 상기 PE 배열부에 포함되는 각 PE로 상기 데이터들을 전송하는 로컬 메모리 및 상기 로컬 메모리에 포함된 상기 데이터들을 상기 PE 배열부에 포함되는 각 PE가 연산하는 적어도 하나의 픽셀에 상응하여 전송하도록 명령하는 제어부를 포함한다. H.264, PE, SAD