Abstract: The present invention relates to a clock selection circuit which can eliminate short clock signals when switching clock signals produced by one clock generator to clock signals produced by another clock generator.

Abstract: An optical path of a reflecting liquid crystal projector is having an incidence light and three dichroic cubes. A first dichroic cube has a first coating with a normal vector of (1,0,1). The first dichroic cube can split the incidence light into two directions, one direction that reflects the blue light and red light and another direction that transmits the green light. A second dichroic cube has a second coating with a normal vector of (1,1,0). In the second dichroic cube, the red light is reflected to a red liquid crystal display (LCD) panel, and the blue light is transmitted to a blue LCD panel. A third dichroic cube has a third coating with a normal vector of (1,0,1). In the third dichroic cube, the green light is transmitted to a green LCD panel.

Abstract: A nail press structure of a nail ejection gun includes a frame body having a nail outlet seat, and a nail magazine. The nail magazine includes an L-shaped magazine plate assembled with a magazine seat, such that a plurality of nails may be received in the space defined between the magazine seat and the magazine plate. The magazine seat is formed with a plurality of magazine grooves, and the magazine plate is formed with a hollow plate locked on the magazine seat. A plurality of elastic members are placed between the magazine seat and the magazine plate. A plurality of nail press members are respectively placed in the magazine grooves, located between the magazine seat and the elastic member, and are pressed by the elastic members.

Abstract: Disclosed is a vibration controlling construction of a quick-release member for a fastening element driving tool. The tool includes a central plate mounted on a top surface of a magazine of the tool. A detachable quick-release member is mounted on the top surface of the central plate. A trigger is pivotally mounted on the quick-release member and has a locking ring. At least one hook integrally protrudes from the central plate and extends over the quick-release member. A slot is formed on a face and a slope extending from a top edge of the slot. A controlling member is received in the slot of the hook. The controlling member includes a slant so configured to correspond to the slope of the hook to abut upon the slope.

Abstract: A bob toy device has a male disk, a female disk, a hollow bobbin disposed between the male disk and the female disk, a first cover disposed on the male disk, a generally T-shaped block disposed in the female disk, a second cover disposed on the female disk, and a shaft passing through the first cover, the male disk, the hollow bobbin, the female disk, the generally T-shaped block, and the second cover.

Abstract: The present invention provides a cleaning method which utilizes a cleaning disk to clean a compact disk drive. The compact disk drive comprises a compact disk holder for holding a compact disk, a motor for spinning the compact disk holder, an optical module having an optical lens, a lens driver for driving the optical lens up and down to focus the optical lens on the compact disk, and a radial driver for moving the optical module horizontally. The cleaning disk comprises a cleaning means installed on the cleaning surface of the cleaning disk for cleaning the optical lens. The cleaning method comprises: (1) using the radial driver to drive the optical module to a test region on the cleaning surface and using the lens driver to focus the optical lens on the test region; and (2) using the motor to spin the disk and using the radial driver and lens driver to move the optical lens to interact with the cleaning means so as to clean the optical lens.