摘要:
An RF directional coupler circuit assembly for matching high frequency cable TV apparatus includes a cover body, and a printed circuit board. The cover body includes a space. The space includes a bottom surface. An RF directional coupler circuit is arranged on the printed circuit board. A 0.01 mm˜2 mm gap is formed between the RF directional coupler circuit and the bottom surface when the printed circuit board is deposited in the space. The distance between the printed circuit board and the cover body is shorten because of the gap, so that the reflections of the high frequency signals and the signal fading are decreasing to achieve matching high frequency impedance characteristics.
摘要:
The Ethernet extension system contains at least a signal and power conversion device, a conversion device, and a coaxial cable connected in between. The signal and power conversion device receives baseband network signal and electricity in accordance with PoE, and delivers the baseband network signal and electricity to the conversion device through the coaxial cable. The conversion device then provides the baseband network signal to an ordinary Ethernet network device. Baseband network signal and electricity as such could be delivered through a coaxial cable beyond the conventional Ethernet without additional configuration of power supplies or power sources, and without repeatedly modulation and demodulation, coding and decoding, or conversion of communication protocols.
摘要:
A liquid crystal display (LCD) including an LCD panel and a back light module is provided. The back light module is disposed below the LCD panel. The back light module includes a planar light source, a reflective polarized light enhancement film, a first prism film and a λ/4 phase retardation film. The planar light source is disposed below the LCD panel, while the reflective polarized light enhancement film is disposed between the LCD panel and the planar light source. The first prism film is disposed between the reflective polarized light enhancement film and the planar light source. Besides, the λ/4 phase retardation film is disposed between the reflective polarized light enhancement film and the first prism film. The back light module has a relatively high light utilization rate, and the LCD has favorable display luminance.
摘要:
The Ethernet extension system contains at least a signal and power conversion device, a conversion device, and a coaxial cable connected in between. The signal and power conversion device receives baseband network signal and electricity in accordance with PoE, and delivers the baseband network signal and electricity to the conversion device through the coaxial cable. The conversion device then provides the baseband network signal to an ordinary Ethernet network device. Baseband network signal and electricity as such could be delivered through a coaxial cable beyond the conventional Ethernet without additional configuration of power supplies or power sources, and without repeatedly modulation and demodulation, coding and decoding, or conversion of communication protocols.
摘要:
A circuit board assembly includes a printed circuit board having a board substrate, a transmission member having a flexible substrate, and an elastic clamping frame. The elastic clamping frame is in the form of a single piece and includes upper and lower walls and press protrusions protruding from one of the upper and lower walls. A stack of a connecting portion of the flexible substrate and a connecting portion of the board substrate is tightly disposed between the upper and lower walls such that each of the conductive fingers of the transmission member and a corresponding one of the conductive fingers of the printed circuit board are pressed against each other by the pressing action of the press protrusions.
摘要:
A multi-domain vertical alignment (MVA) liquid crystal display panel including an active device array substrate, an opposite substrate and a liquid crystal layer is provided. The active device array substrate has a plurality of pixel electrodes and a plurality of auxiliary electrodes, wherein each pixel electrodes has at least a slit and each auxiliary electrode is disposed corresponding to the slit. The opposite substrate is disposed above the active device array substrate and the opposite substrate has a common electrode disposed between the active device array substrate and the opposite substrate. The liquid crystal layer is disposed between the active device array substrate and the opposite substrate. The above-mentioned multi-domain vertical alignment liquid crystal display panel has high aperture ratio and rapid response.
摘要:
A method for fast activation and playing of multimedia data with a non-fixed data storage media, such as compact disk, is provided. The storage media, pre-installed with an operating system, is used to activate the computer. Then the media player connected to the computer is detected, and a device driver for the detected media player and a corresponding media playing application in the storage media are executed. The process further includes establishing a RAM disk area in the RAM of the computer for the space required by executing the operating system, device driver for the media player, and the media playing application programs.
摘要:
A blender includes a container mounted removably on a housing for containing food items and provided with a cutting blade unit that is to be driven rotatably by a motor unit when the container is mounted on the housing. A control unit is operable in accordance with an initial control signal from a switch unit so as to activate the motor unit to operate in a judgment mode. The control unit determines food processing conditions in accordance with a motor rotation signal generated by a sensor unit for indicating a rotary speed of the motor unit when the motor unit is operated in the judgment mode. The control unit switches operation of the motor unit from the judgment mode to a food processing mode upon determining the food processing conditions so as to drive rotation of the cutting blade unit to blend the food items contained in the container.
摘要:
Disclosed is a device and method for dynamically adjusting orientation of a satellite antenna carried in a movable carrier, including a satellite tracking system and an adjusting device. The satellite tracking system includes a position processor that receives a group of positioning signals comprising a current coordinate from a group of GPS satellites and retrieve a program signal comprised a preset coordinate among at least one of program satellites, a comparator comparing the current coordinate with a preset coordinate to generate an deviation, and a microprocessor processing the deviation to issue a control signal that is fed to the adjusting device for changing orientation of the antenna to match with that of the program satellite.
摘要:
A method for recording DVD-R/RW discs uses a recordable DVD player, which supports the DVD-R/RW recording specification, to write the DVD-R/RW discs according to the DVD+VR specification. In this way, the DVD-R/RW discs can be played by players that support the DVD-Video and DVD+VR specifications.