Abstract: The present invention is related to the apparatus for driving the light emitting devices with different colors. The input powers of the light emitting devices are measured and controlled by a feedback control system to maintain constant, and by setting different power inputs to the different light emitting devices different stable colors are produced.

Abstract: The present invention provides a constant power driving-and-controlling method for lighting elements so as to stably drive solid lighting elements. Measuring the input power of lighting elements by a power measuring device and then controlling the input power of the lighting elements by a feedback controller to stabilize the input power of the lighting elements, the effects of environment temperature and the difference of the electrical characteristics of the lighting elements on the input power can be eliminated.

Abstract: A dual polarization antenna device for creating a dual band function, includes: a first dielectric body, a patch layer, a first phase difference changing structure, a second dielectric body, a common metal layer, a ground layer, a second phase difference changing structure, a first antenna feed pin, and a second antenna feed pin. The first dielectric body, the patch layer, the first phase difference changing structure, the common metal layer, and the first antenna feed pin are combined together to form an upper polarization antenna structure. The second dielectric body, the common metal layer, the second phase difference changing structure, and the ground layer are combined together to form a lower polarization antenna structure. Therefore, the upper polarization antenna structure and the lower polarization antenna structure are combined to create both the dual polarization and the dual band functions.

Abstract: A testing method includes selecting a low-pass filter by simulation, generating testing signals with the low-pass filter receiving output signals of an under-test circuit, and outputting the testing signals to an input of the under-test circuit for predetermined measurements. A testing circuit and testing method achieve the same jitter injection as conventional high-speed testing instruments, but save testing cost.

Abstract: A modularized active power filter includes a control module and at least one power module. The control module automatically identifies the number of the parallel connected power modules and generates one set of PWM signals to correspondingly control the parallel connected power modules, so as to provide a final compensation current by single power module or plural power modules. Thereby, the compensation demand of a load is met. Consequently, the modularized active power filter is able to improve the flexibility of compensation capacity, shorten the time for service, be suitable for mass production, and lower the manufacturing cost.

Abstract: A housing assembly (22) for use in a portable electronic device (20), includes a keypad board (221), a circuit board (223), and a main body (224). The keypad board has at least one key (2211) formed at a top surface thereof and at least one mounting pin (2224) formed at a bottom surface thereof. The circuit board has at least one swithpoint (2233) formed thereon. Each of the swithpoint corresponds to the at least one key. The main body defines a mounting cavity (2248) in one side thereof. The keypad board and the circuit board are mounted in the mounting cavity from top to bottom with the at least one mounting pin.

Abstract: A display for active power filter can be employed to show setting compensation parameters and real compensating information of the active power filter in operation in a same screen. Accordingly, the users can immediately diagnose whether resonance or other problem was appeared or not.

Abstract: A method for preparing organic carbonates comprising subjecting an alcohol compound to oxidative carbonylation in the presence of carbon monoxide, oxygen and a liquid-phase catalytic system, to form a organic carbonates, wherein the liquid-phase catalytic system includes at least one catalyst, at least one additive and at least one ionic liquid composed of a cation, which has a nitrogen-containing heterocyclic structure, and an anion. Through using the additive and the ionic liquid, the activity and the performance of the catalyst are enhanced, and increased reaction rate and yield can be obtained.

Abstract: A harmonic-suppressing AC/DC power converter employs a control method for permitting the AC/DC power converter only to detect an input AC current and an output DC voltage. The control method can control the AC side of the AC/DC power converter to generate a voltage which is proportional to the input AC current. Thereby, the AC/DC power converter acts as a virtual resistor having a linear resistance characteristic. Accordingly, the input AC current of the AC/DC power converter can be controlled to approximate nearly as a sinusoidal wave with the performance of high input power factor and low input harmonic current.

Abstract: A method for adjusting a color lighting device, comprising the following steps: (a) selecting in a user interface to generate a control instruction having various colors with different mixing ratios; (b) transmitting the control instruction to the color lighting device, and storing the control instruction in a memory of the color lighting device; and (c) adjustably emitting color lighting according to the control instruction of step (b). The present invention provides the users the capability of adjusting the color lighting device, thereby furnishing atmosphere of enjoyment to the life of the users.

Abstract: A transmission circuit includes a first-stage circuit, a second-stage circuit, a negative active feedback circuit and a current buffer. The first-stage circuit includes at least an active MOS device for receiving an input voltage and issuing a first voltage signal. The active MOS device has an inductive feature during operation in a high frequency mode to compensate the first voltage signal. In response to the first voltage signal, the second-stage circuit outputs a first output voltage. The negative active feedback circuit may enhance the bandwidth of the first output voltage. The current buffer may enhance the gain value of the first output voltage. A second voltage signal is issued from the first-stage circuit and compensated by the first output voltage transmitted from the current buffer to enhance the bandwidth and the gain value thereof. In response to the compensated second voltage signal, the second-stage circuit outputs a second output voltage.

Abstract: An active power conditioner includes a first power electronic switch set, a second power electronic switch set, a third power electronic switch set, an input filter and an output filter. The active power conditioner can supply a stable AC voltage to a load when a voltage variation is occurred at an AC power source by controlling either the second power electronic switch set or the third power electronic switch set via high-frequency switching, and the other power electronic switch sets that are not switched in high frequency are controlled to switch in low-frequency switching.

Abstract: With an image-based rendering (IBR) system based on linear interpolated concentric mosaics, an observer is able to wander through a real or synthesized scene and have new view images (optionally including stereo images) of the scene rendered as the observer moves. According to one embodiment, multiple viewing rays are extended in a viewing direction from the image to be rendered at a view point. For viewing rays that do not coincide with captured images, an image is generate based on the captured images. The image is generated by interpolating between at least two captured images based on a constant distance to objects in the scene. The view images that are displayed can be mono or stereo (e.g., simulating a pair of eyes of the observer).

Abstract: A method for manufacturing copper wires on a substrate for a flat panel display device is disclosed. The method comprises following steps: providing a substrate; forming a seed layer on the surface; forming a patterned photoresist on the surface of the seed layer to expose a part of the seed layer; and plating a copper layer on the exposed part of the seed layer. As the copper layer is plated, an electrolyte solution comprises a sulfur-containing compound is used. The angle between the surface of the copper layer and the contact surface of the seed layer is greater than 0 degree and less than 90 degree. Through the method illustrated above, the film step-coverage in the following process can be improved, the generated voids in device can be reduced, the manufacturing steps can be simplified, and the complicated etching process can be avoided.

Abstract: A broadband circularly polarization antenna device includes: a dielectric body, a patch, an antenna feed pin, and a grounding layer. The patch is disposed on a top surface of the dielectric body. The antenna feed pin is extended outward from a bottom surface of the dielectric body. One part of the grounding layer is coated on the bottom surface of the dielectric body, and the other part of the grounding layer is coated entirely around a lateral side of the dielectric body. Because the grounding layer is coated on the bottom surface and the lateral side of the dielectric body, the bandwidth of the antenna device is increased and interference from a PCB and other surrounding circuits to the antenna device is greatly reduced, thereby ensuring the antenna device performs well.

Abstract: An enhanced heat transfer device with electrodes is provided, which is applied to a heat exchanger with a plurality of fluid channels and includes a plurality of electrodes mounted in the fluid channels of the heat exchanger; a plurality of sensor units mounted in the fluid channels of the heat exchanger for measuring mass flow rates of fluids in the fluid channels; and a power source for providing voltage to the electrodes. The power source is used to drive the electrodes to produce turbulence to fluids passing through the fluid channels according to measured mass flow rates from the sensor units, so as to facilitate uniform fluid flows in the plurality of fluid channels and reduce effect of thermal boundary layer in the fluid channels to thereby enhance heat transfer performance for the heat exchanger.

Abstract: A light transceiver module is designed for electronic devices. It forms an electric connection with the electric connector of the electronic device. The light transceiver module contains a base, a light-emitting device for providing optical signals, a light-receiving device for receiving optical signals, and a main circuit board. The base supports the light-emitting device, the light-receiving device, and the main circuit board. The main circuit board has a pluggable electric connector for connections with the electric connector of the electronic device. The light transceiver module can be used to simplify and optimize the devices using it.

Abstract: The present invention provides a method for preparing a carbon nanofluid. The method includes providing a base fluid, providing a number of carbon nanotubes, combining the carbon nanotubes with the base fluid, dispersing the carbon nanotubes substantially evenly in the base fluid through a physical agitation operation, and cooling a system performing the physical agitation operation during the physical agitation operation. The present invention also provides a carbon nanofluid capable of serving as a heat transfer fluid. The carbon nanofluid includes about 99.8 to about 98% by volume of a base fluid, and from about 0.2 to about 2.0% by volume of functionalized carbon nanotubes substantially evenly-dispersed in the base fluid.

Abstract: Accordingly, this invention relates to an dry etching process for semiconductor wafers. More particularly, the present invention discloses a dry etching process including a halogen etchant (24) and a nitrogen gas (28) that selectively etches a compound semiconductor material (18) faster than the front-side metal layers (16A)(16B). Further, the dry etching process produces a vertical wall profile on compound semiconductor material (18) in both X (38) and Y (40) crystalline directions without undercutting the top of a via-opening.

Abstract: A solar photo-voltaic panel light structure includes a sectioned pole including a lamp formed on a upper end thereof and a foot formed on a lower end thereof to facilitate erecting the pole in the ground, a solar photo-voltaic panel battery adjustably connected to the pole and a control box electrically connected to the solar photo-voltaic panel battery so that the solar photo-voltaic panel battery is able to provide electricity.