Abstract:
A light emitting device firstly includes a light emitting diode (LED) structure, having a top surface with a light emitting region. The device also has a heterojunction within the device structure, the heterojunction having a p-type and an n-type semiconductor layer, and a plurality of electrodes positioned on the top surface, each being electrically connected to one of the p-type and n-type semiconductor layers. At least a first and a second electrodes are connected to a same type semiconductor layer and are physically separated from each other. The device further includes a first and a second heterojunction regions within the heterojunction, each being respectively defined between one of the first and second electrodes and one of the other electrodes connected to the other type semiconductor layer. The first and second heterojunction regions are alternatively driven for emitting lights in the time domain.
Abstract:
A light emitting device includes a first light emitting diode (LED) emitting a first light emission of at least a first wavelength, and a second light emitting diode emitting a second light emission of at least a second wavelength. The second LED is placed in close proximity to the first LED such that after a mixing length from the first and second LEDs, a combination of the first and second lights is perceived as one color in the human vision. In use, the first and second LEDs are alternately driven by a power source in the time domain.
Abstract:
There is provided a system and method and apparatus for selecting data rates in a wireless communication system. More specifically, there is provided a method comprising selecting one of a plurality of data rate control values for a transmission based on an adjustable relationship between the selected data rate control value and a transmission error margin related to the selected data rate control value.
Abstract:
Graphitic nanotubes, which include tubular fullerenes (commonly called “buckytubes”) and fibrils, which are functionalized by chemical substitution, are used as solid supports in electrogenerated chemiluminescence assays. The graphitic nanotubes are chemically modified with functional group biomolecules prior to use in an assay. Association of electrochemiluminescent ruthenium complexes with the functional group biomolecule-modified nanotubes permits detection of molecules including nucleic acids, antigens, enzymes, and enzyme substrates by multiple formats.
Abstract:
A method is provided for forming wafer level package that incorporates dual compliant layers and a metal cap layer on top of I/O pads. The wafer level package includes a plurality of metal cap layers formed on top of a plurality of I/O pads to function as stress buffering and avoiding sharp corners in metal traces formed on top of the metal cap layers. A first compliant layer and a second compliant layer are formed under the metal trace to provide the necessary standoff and to accommodate differences in coefficients of thermal expansion of the various materials on an IC die. The wafer level package is particularly suitable for copper devices or in devices wherein copper lines are used.
Abstract:
A method for generating application-specific input files for applications that require input files in varying file formats, where data for specifying industrial equipment are stored in a database of a computer system as XML-formatted files, which are based on a class model, and a modular transformation into at least one application-specific input file takes place. One or more of the XML files are loaded into a memory, decoded, interpreted and verified—particularly with regard to semantics and consistency. In the absence of an error specifications of objects of the industrial equipment are generated in XML format based on the verified XML files by using an interface containing descriptions of the functionality of the respective applications. The at least one application-specific file is generated via canonical transformation from the generated object specifications in XML presentation.
Abstract:
A wafer level package that incorporates dual compliant layers and a metal cap layer on top of I/O pads and a method for forming the package. The wafer level package includes a plurality of metal cap layers formed on top of a plurality of I/O pads to function as stress buffering and avoiding sharp corners in metal traces formed on top of the metal cap layers. A first compliant layer and a second compliant layer are formed under the metal trace to provide the necessary standoff and to accommodate differences in coefficients of thermal expansion of the various materials on an IC die. The wafer level package is particularly suitable for copper devices or in devices wherein copper lines are used.
Abstract:
A method for testing a USB port and the device for the same. The VCC and GND power lines of the USB port and the twisted paired signal lines of D+ and D− are connected with the corresponding terminals on a parallel port so as to test the connection between the USB port and the USB host controller. The invention also discloses the corresponding device.
Abstract:
The invention provides a power control methodology that increases the performance and the throughput of wireless communication systems. In particular, the invention provides a reverse jamming prevention process that efficiently utilizes power resources in a communication system such as CDMA. The invention advantageously prevents reverse jamming due to link imbalance that results from differences in forward and reverse link coverage. According to the invention, an evaluation set (e-set), which is a super set of the active set of base transceiver stations serving specific users, is determined to prevent the negative effects of reverse jamming. Excessive interference problems in the reverse link, particularly in high-speed wireless systems, are thus avoided.
Abstract:
A method and apparatus are provided for dynamically controlling a high speed wireless communication system to optimize utilization of system resources and thereby increase system throughput. The invention operates to determine an allocation of wireless transmission resources to each user application served by the wireless system in a manner to optimize transmission resources while meeting required QoS criteria for the served user application. After all user applications have been provided a transmission resource allocation in this manner, the total transmission resources so allocated are determined and compared with a ceiling transmission resource level for the wireless system. A portion of the difference between the ceiling and currently allocated transmission resource levels is then made available, according to the invention, to the served user applications in proportion to the initial allocation provided each user application.