Abstract:
A temperature sensor device for use in a clean room has a housing, a covering tube extending from the housing, a lead wire protecting tube extending from the housing within the covering tube, and a generally cylindrical temperature sensor also disposed within the covering tube. A fixing end of the temperature sensor is detachably coupled to a distal end of the lead wire protecting tube. A plurality of lead wires protrude from the fixing end and extend through the lead wire protecting tube and into the housing. The temperature sensor includes a temperature sensor element at a free end thereof. The covering tube has at least one hole by which the temperature sensor element is exposed to the atmosphere. Accordingly, the temperature sensor is highly responsive to changes in temperature, and can be repaired, maintained or replaced with ease.
Abstract:
A base station transmitter for a CDMA communication system which includes a superframe period of a sync channel, a plurality of first sync channel frames segmented from the superframe period, the first sync channel frames each having a first period, and a plurality of second sync channel frames segmented from the first sync channel frames, the second sync channel frames each having a second period, wherein sync channel signals are transmitted through the second sync channel frames. The base station transmitter comprises a circuit for generating the sync channel signals; and a channel spreader for channel spreading a sync channel signal in a leading sync channel frame out of the second sync channel frames in said each first sync channel frame with a first orthogonal code, and channel spreading sync channel signals in the remaining sync channel frames with a second orthogonal code.
Abstract:
PURPOSE: An apparatus and a method for demodulating a PDCCH(Packet Data Control CHannel) and a PDCH(Packet Data CHannel) in an MS(Mobile Station) of a mobile communication system are provided to efficiently demodulate an F(Forward)-PDCH when the F-PDCH and an F-PDCCH exist in a high-speed packet data communication system. CONSTITUTION: An F-PDCH demodulation operation control unit checks whether a CRC(Cyclic Redundancy Check) good packet exists among four F-PDCCH decoding results inputted from an F-PDCCH decoding result selecting unit(702). If the CRC good packet does not exist among the four F-PDCCH decoding results, the F-PDCH demodulation operation control unit generates an F-PDCH stop signal(704). If the CRC good packet exists among the four F-PDCCH decoding results, the F-PDCH demodulation operation control unit checks whether an F-PDCCH sequence is '000000XXXXX11'(706). If the F-PDCCH sequence is not '000000XXXXX11' and is a message indicating information about an F-PDCH, the F-PDCH demodulation operation control unit confirms whether a MAC_ID(Medium Access Control_Identification) received in an MS is an ID assigned in the MS(710). If the MAC_ID is not the ID of the MS, the F-PDCH demodulation operation control unit sets an F-PDCH stop signal as '1' and outputs the F-PDCH stop signal(712). If the MAC_ID is the ID of the MS, the F-PDCH demodulation operation control unit checks a received SP_ID(Sub-Packet_ID) value(714). If the SP_ID is 0, the F-PDCH demodulation operation control unit checks a standby SP_ID value and checks whether a current standby packet is a new packet in which the SP_ID is 0(716). If the standby SP_ID is 0, the F-PDCH demodulation operation control unit performs a normal operation(718). If the standby SP_ID is not 0, the F-PDCH demodulation operation control unit clears one corresponding to a received ARQ_ID among F-PDCH subpacket n QCTC(Quasi Complementary Turbo Code) buffers and performs the normal operation(720).
Abstract:
PURPOSE: An apparatus and method for transmitting packet data using a Walsh code in a mobile communication system is provided to perform a packet data service using an orthogonal Walsh code and perform the packet data service using a QOF(Quasi-Orthogonal Function) Walsh code. CONSTITUTION: An orthogonal WSI(Walsh Space Information) generator(101) generates information about an orthogonal Walsh code assigned to a packet data service. A terminal receiving signal C/I(Carrier to Interference ratio) obtainer(103) outputs information of a C/I of a signal to which a packet power is assigned with reference to information of a C/I transmitted in a reverse direction and a power assigned to the packet data service. A calculator(109) extracts a power decrease factor(K) according to an interference quantity generated in case of using a QOF Walsh code. The first determiner(105) receives the output of the orthogonal WSI generator(101) and the C/I of a terminal receiving signal, and determines a data transmission method and a data rate(DR1) when using an orthogonal Walsh code. The second determiner(107) receives the output of the terminal receiving signal C/I obtainer(103) and the output of the calculator(109), and determines a data rate(DR2) when using the QOF Walsh code. A comparator(111) compares the levels of the output values of the first and second determiners(105,107), and selects a large value. An information transmitter(113) generates an orthogonal Walsh code or QOF Walsh code information signal and a data information rate information signal according to the output of the comparator(111), and output the orthogonal Walsh code or QOF Walsh code information signal and the data information rate information signal.
Abstract:
PURPOSE: A nonvolatile memory device is provided to improve the integration of a memory cell by reducing the depth of a highly doped source and to prevent deterioration of the characteristic of a first insulation film. CONSTITUTION: A nonvolatile memory device is composed of a first insulation film(700) on a semiconductor substrate(300), a floating gate(340), a second insulation film(350) and a control gate(360), a drain area(310) on the surface of the semiconductor substrate, a lightly doped source(602), and a highly doped source(600). Herein, the highly doped source is formed to be shallower than the drain area while not being overlapped by the floating gate. Therefore, the integration of the memory cell is improved, and the characteristic of the memory cell is improved by reducing the trap of electrons in the first insulation film. Herein, the first insulating film is formed between the floating gate and the lightly doped source.
Abstract:
PURPOSE: A nonvolatile memory device and manufacturing method thereof are provided to decrease a number of common source line necessary to total cell array region by using a source pad line. CONSTITUTION: The memory device comprises a plurality of active regions(105) defined by a plurality of isolation regions(102) and formed on a semiconductor substrate(100); a plurality of stacked gates having a plurality of floating gates(110) and control gates(120); a plurality of source region(135) formed in the active region and between the stacked gates(110, 120); a plurality of contact holes(145) self-aligned by the stacked gates and formed in an interlayer dielectric(136P); a plurality of source pad lines(145') formed in the contact holes(145) for connecting the exposed source regions parallel to the stacked gates; and a common source line(180) arranged parallel to the stacked gates. By connecting the source regions(135) to the source pad lines(145') made of a low resistivity metal, the cell array area is reduced.
Abstract:
본 발명은 낸드형 플래쉬 메모리장치에 관한 것으로서, 특히 반도체기판상의 소자분리영역에 의해 한정된 액티브영역상에 스트링 선택라인 트랜지스터와 적어도 2개이상의 메모리셀 트랜지스터들 및 접지선택라인 트랜지스터를 비트라인과 접지라인사이에 직렬로 구성한 낸드형 불휘발성 반도체 메모리장치에 있어서, 상기 스트링 선택라인 트랜지스터 및 접지선택라인 트랜지스터의 액티브영역의 폭이 상기 메모리셀 트랜지스터의 액티브영역의 폭보다 넓게 형성된 것을 특징으로 한다.
Abstract:
신호를 수신하는 다중 수신단들 각각으로부터 검출된 동기 상태를 기초로 다중 수신단들의 클럭 게이팅(clock gating) 또는 파워 게이팅(power gating)을 제어하는 다중 수신단들을 포함하는 다중 경로 수신기의 전력 감소 방법 및 그 다중 경로 수신기를 제공할 수 있다.
Abstract:
Provided is a tracking method and an apparatus for a communication system to prevent a timing difference and a bit error rate performance degradation caused by unstable characteristics of a plurality of circuit devices. The tracking method and apparatus includes sampling signals received at receiving a plurality of antennas; tracking sample values resulting from the sampling of the signals; and combining the tracked sample values.