Abstract:
A slide mechanism adapted to a projection screen apparatus includes a frame, a slider, a resilient device, and an engaging device. The frame includes a receiving portion and a latch disposed in the receiving portion. The slider is slidably disposed in the receiving portion and includes a body portion defining a receiving groove and a pull handle. The resilient device is disposed below the slider for exerting a resilient force on the slider to move the slider. The engaging device is pivotally disposed in the receiving groove of the slider and includes an engaging end portion and an exerting end portion. The engaging end portion is disposed in the receiving groove and is connected against the latch. When a force is exerted on the exerting end portion, the engaging device is correspondingly rotated, and the engaging end portion of the engaging device is disengaged from the latch of the frame.
Abstract:
A method for allocating wireless communication resources in a distributed antenna system, in which the reuse factor of the wireless communication resource is further reduced and the utilization efficiency of the wireless communication resources is improved. In a group of service areas joining as a node in the system, the coverage area of each service area is divided into a central region and a boundary region, with each central region forming a central region allocating unit, and the boundary regions of a pair of adjoining service areas forming a boundary region allocating unit; each central region allocating unit is allocated with the same wireless communication resources and the quantity thereof is decided by the ratio of the area size of said central region to the area size of said service area, and also the quantity of all usable wireless communication resources in the system; each boundary region allocating unit is allocated with different wireless communication resources and the quantity thereof is decided by the remaining wireless quantity of wireless communication resources after the quantity of all usable wireless communication resources in the system minus the quantity of the wireless communication resources allocated to the central region allocating unit, and also the number of said boundary region reallocating units; and in a different group of service areas joining at one node, all usable wireless communication resources in said system are reused by the same allocating mode.
Abstract:
A coaxial connector with all metal shell comprises a metalwork casing in which at least one positioning hole is disposed; an insulator is accepted in the positioning hole; a terminal is accepted in the insulator; a rear receiving room is disposed at the rear end of the casing; a breach is disposed at one flank side of the rear receiving room; an insulating tenon is combined at the inside of the breach of the rear receiving room; the insulating tenon has a plurality of through holes; at least one ground at the rear end of the casing and a lead wire at the rear end of the terminal is extended out of the casing after being respectively passed the through holes.