Abstract:
PURPOSE: A median filtering method and a device thereof are provided to reduce the computational complexity needed for calculating the median value. CONSTITUTION: An input unit(210) receives N data. A difference array calculating unit(220) forms a data set with the N data. The difference array calculating unit calculates an NxN sized difference array. An adding unit(230) adds up a component value of each column in the difference array. An index calculating unit(240) calculates an index for a column which has the smallest value from the added component values.
Abstract:
An interworking method between an ACR(Access Control Router) and a PDE(Position Determination Entity) in a portable Internet-based location recognition system and a system for the same are provided to establish criteria to construct various services by laying down a definition for the interworking between an ACR and a PDE. In case it is required to measure the location of a PSS(Portable Subscriber Station), a PDE transmits a pilot measure request message to an ACR(910). Receiving the pilot measure request message, the ACR transmits a scan request message to the PSS through a base station(920). In response to the scan request message, the PSS executes scanning for neighbor base stations and carries a scan result with a MOB_SCN_REPORT message to the base station(940). If the base station transmits a scan response message, which contains the scan result, to the ACR(950), the ACR transmits a pilot measure response message to the PDE(960). The PDE, receiving the pilot measuring response message, extracts necessary information and measures the location of the PSS.
Abstract:
채널 영역 하부에서 플로우팅 바디 효과(floating body effect)가 유발되는 것을 방지하여 SOI 제품의 특성 최적화를 이룰 수 있도록 한 SOI 소자 제조방법이 개시된다. 이를 구현하기 위하여 본 발명에서는, 제 1 실리콘층 상부에는 BOX층이 형성되고, 상기 BOX층 상에는 제 2 실리콘층이 형성되어 있는 구조의 SOI 기판을 준비하는 단계와, 채널 형성부를 한정하는 절연 재질의 마스크를 이용하여 상기 제 1 실리콘층의 표면이 소정 부분 노출되도록, 상기 제 2 실리콘층과 상기 BOX층을 순차 식각하여 상기 SOI 기판 내에 홈을 형성하는 단계와, 상기 홈 내에 평탄화된 에피층을 형성하는 단계와, 소자분리영역을 한정하는 절연 재질의 마스크를 이용하여 상기 BOX층의 표면이 소정 부분 노출되도록 상기 제 2 실리콘층을 식각하는 단계와, 상기 제 2 실리콘층의 식각 부위에 소자격리막을 형성하는 단계와, 상기 에피층을 포함한 상기 제 2 실리콘층 상의 소정 부분에 게이트 산화막을 개재하여 게이트 전극을 형성하는 단계 및, 상기 게이트 전극 양 에지측의 상기 제 2 실리콘층 내에 LDD 구조의 소스/드레인 영역을 형성하는 단계로 이루어진 SOI 소자 제조방법이 제공된다.
Abstract:
PURPOSE: A frequency multiplier capable of adjusting the duty cycle of a clock and a multiplying method are provided to automatically adjust the duty cycle of the multiplied clock by controlling the delay amount of the delay circuit. CONSTITUTION: A frequency multiplier capable of adjusting the duty cycle of a clock includes a delay circuit(210), an exclusive logical adder(220) and a control circuit(230). The delay circuit(210) receives a first clock and outputs a delay clock by a predetermined time. The exclusive logical adder(220) receives the first clock and the delayed clock and outputs the second clock by exclusively and logically adding the first clock and the delayed clock. The control circuit(230) detects the phase difference between the first clock and the delay clock and outputs a predetermined control signal corresponding to the detected phase difference to the delay circuit(210). And, the control signal controls the delay amount of the delay circuit(210).
Abstract:
PURPOSE: A silicon-on-insulator(SOI) field-effect-transistor(FET) including a body contact for removing a floating body effect is provided to reduce an occupying area and to prevent an abnormal operation of a circuit caused by contact capacitance, by eliminating the need to additionally form an metal interconnection for supplying power source to a body. CONSTITUTION: A buried oxide layer(51) is formed on a semiconductor substrate(50). The body constituting an active region is formed on the buried oxide layer. A gate oxide layer(48) is formed on the body. A gate(46) is formed on the gate oxide layer. The body contact(442) supplies the power source to the body. A trench penetrates an isolation region(41) surrounding the body, the body and the buried oxide layer. A conductive supplement is filled in the trench to electrically connect the body with the semiconductor substrate.
Abstract:
PURPOSE: An SOI semiconductor IC and a fabricating method thereof are to remove a floating body effect and a parasitic bipolar effect to prevent a body region of the transistor from being electrically floated, thereby increasing reliability of a product. CONSTITUTION: An isolated transistor active region(1a) is formed on the first conductive type semiconductor layer. The first conductive type body line(1b) as a part of the semiconductor layer is disposed at one side of the transistor active region. A device isolating film encloses a sidewall of the body line and the transistor active region to be contacted with a buried insulating layer. The first conductive type body extending portion is extended from the sidewall of the transistor active region to be electrically connected with the body line. The first conductive type body extending portion(1e) has a thinner thickness than the transistor active region. A body insulating(3a) layer is formed on the body extending portion. An insulated gate pattern crosses an upper portion of the transistor active region to be overlapped with the body insulating layer.
Abstract:
PURPOSE: A method for manufacturing a silicon-on-insulator(SOI) device is provided to prevent a floating body effect in a region under a channel region, by directly connecting the channel region of a unit device formed in an upper portion of a buried oxide(BOX) layer with a silicon layer under the BOX layer formed right under the BOX layer. CONSTITUTION: An SOI substrate is prepared in which a buried oxide(BOX) layer(102) is formed on the first silicon layer(100) and the second silicon layer(104) is formed on the BOX layer. The second silicon layer and the BOX layer are sequentially etched to expose a predetermined portion of the surface of the first silicon layer by using a mask of an insulating material confining a channel formation part, and to form a groove in the SOI substrate. An epi layer(110) planarized in the groove is formed. The second silicon layer is etched to expose a predetermined portion of the surface of the BOX layer by using a mask of an insulating material confining an isolating region. An isolating layer is formed in the etched portion of the second silicon layer. A gate electrode(120) is formed in a predetermined portion on the second silicon layer including the epi layer by interposing a gate oxide layer(118). A source/drain region(122a,122b) of an LDD structure is formed in the second silicon layer at both edges of the gate electrode.
Abstract:
RISC 환경에서 CISC 명령어들을 실행하기 위한 시스템 및 방법이 공개된다. 맵퍼/인터페이스 회로는 x86 명령어 세트로부터 추출된 것일 수 있는 CISC 명령어들을 받아들이고, 그에 대응하는 RISC 명령어들로 번역한 다음, 실행을 위해 이들을 RISC 마이크로프로세서로 전달한다. 인터페이스 회로는 상기 RISC 마이크로프로세서와 별개의 것이며, 이에 따라 마이크로프로세서의 효율을 향상시키고 프로세서 및 하드웨어 개발을 단순화시키게 되는 오프-칩(Off-chip) 번역이 이루어진다. 명령어들은 CISC 명령어들 내에서의 경계들에 의해 정의되는 그룹단위로 번역될 수 있다. 하나의 명령어 그룹이 마이크로프로세서로 전달되어 실행되는 동안, 그와 동시에 다음 명령어 그룹이 번역된다. 본 발명의 회로가 표준형 x86 마더보드상의 표준형 x86 소켓에 꽂아질 수 있는 방식으로 본 발명의 플러그인 맵퍼/인터페이스 회로는 x86 프로세서와 플러그 호환성을 가진다. 표준형 상용 부품들이 호스트로 사용될 수 있기 때문에, 시스템 개발 및 생산에 상당한 비용 절감이 실현된다.