Abstract:
PURPOSE: A lamp fixing holder and a back light assembly having the same are provided to realize a display of the high quality by maximizing the use efficiency of light generated in a lamp. CONSTITUTION: A lamp fixing holder(100) includes a lamp fixing body(110) and a fixing member(120). The lamp fixing body restraints a lamp(130) from moving while minimizing loss of light generated from the lamp. The lamp fixing body is roundly formed to be inserted into a part of a cylindrical surface of the lamp. The fixing member fixes the lamp fixing body at a container(200) containing the lamp to face a part of the lamp which is not hidden by the lamp fixing body with the liquid crystal display panel.
Abstract:
PURPOSE: A direct type liquid crystal display device is provided to prevent the generation of Becke's line on a screen by forming a Becke's line preventing pattern on a diffusion sheet and the discoloring of the Becke's line preventing pattern by ultraviolet rays and visible rays included in the light of a lamp and the heat of the lamp by mounting a diffusion plate between the sheet and the lamp. CONSTITUTION: A direct type liquid crystal display device includes a diffusion sheet(242) having an incident surface to which light provided from a lamp is incident. The incident surface of the diffusion sheet is formed with a Becke's line preventing pattern(242a) for blocking the Becke's line caused by the light of the lamp. The pattern is formed at a position corresponding to the position of the lamp. Beads or a binder(242b) is further coated on a projecting surface of the diffusion sheet to project the incident light to a liquid crystal panel.
Abstract:
PURPOSE: An apparatus for constructing a home-zone database for home-zone service is provided to offer an apparatus for constructing a home-zone database in order to exactly embody home-zone service. CONSTITUTION: A cell plan processor(100) consists of a cell plan tool(110) and a conversion part(120). The cell plan tool(110) generates a coverage map to determine coverage by base stations. The conversion part(120) generates zone data using the coverage map. A home location register(400) stores subscriber information, such as terminal information, extrinsic information, etc. A location determination part(200) is composed of an address location database(210) and a zone database(220). The address location database(210) is transferred mobile identification numbers and national significant numbers from a CCC(Customer Care Center). The zone database(220) receives national significant numbers and RTD(Round Trip Delay) information from a base station transceiver subsystem. Also the zone database(220) stores home-zone data for each subscriber, based on latitude and longitude information provided from the address location database(210). An SPC(Service Provisioning Center)(300) transfers the home-zone data provided from the location determination part(200) to the home location register(400).
Abstract:
PURPOSE: A method for establishing more base stations for cell expansion in a cellular system is provided to establish new base stations in view of location of base stations and height of antennas CONSTITUTION: A ratio of a distance between a new base station and the nearest circumferential base station to that between a new base station and the farthest circumferential base station is within 1:2. And, when the new base station(6) is not located on the middle place between circumferential base stations and the ratio of the distance is 1:2, a ratio of a height of an antenna of the circumferential base station to that of the new base station(6) is within 8:5. Therefore, the new base station is established on a place in which interference between signals from the new base station and the circumferential base station is smallest.
Abstract:
본 발명에 의한 코드 분할 다중 접속 네트워크의 역방향 링크 최적화 방법은 링크 평형화 방법과 병행으로 실시할 수 있는 역방향 링크에 대한 최적화 시험 방법에 관한 것이다. 본 발명은, 선정된 시험 장소에서 수집된 통화 데이터중 단말 송신 전력 데이터와 단말 송신 이득 조정 데이터, 역방향 프레임 에러율 데이터 및 잡음대 비트 에너지 결정점 데이터를 분석하여, 각 데이터가 미리 정의되어 있는 지정범위를 만족시키지 않는 경우 순방향 서비스 범위를 축소하거나 또는 잡음대 비트 에너지 결정점 파라미터를 조정한다. 상기와 같은 과정을 통해 각 링크의 적정 서비스 영역을 유지시켜 통화 품질을 개선시키고 전체적인 시스템 성능을 최적의 상태로 유지한다.
Abstract:
본 발명은 특정 시스템의 송신 주파수가 타 시스템의 수신 주파수와 인접되어 있어서, 송신 주파수의 불요파 성분이 기존망에 간섭으로 작용하는 경우의 안테나 배치방법에 관한 것이다. 본 발명에 의한 인접 주파수간 간섭시 안테나 설치 방법의 바람직한 일 실시예는, 송수신 안테나가 같은 공간에 설치되어야 할 때, 일반적 형태의 송신 안테나와 수신 안테나를 서로 수직으로 이격시켜 설치한다. 본 발명의 다른 실시예는, 송수신 안테나가 같은 공간에 설치되어야 할 때, 수신 안테나가 섹터 형태로 설치되어 있을 경우, 송신 안테나의 방향을 수신안테나들의 방향각 사이가 중심방향이 되도록 설치하는 것이 바람직하다. 본 발명은, 송신 신호의 불요파 성분에 의한 간섭신호를 크게 줄이는 효과를 갖는다.