摘要:
In a communications network, it is necessary for client software applications to monitor detail records constructed from messages transmitted in a signalling network (100) associated with the communications network. Prior techniques for delivery of the detail records to the client software applications included separate generation of the detail records for each client software application resulting in duplication of effort in the collection and dissemination of the detail records as well as the prolific number of detail record generation tasks required. The present invention overcomes these disadvantages by having a single generator (200, 410) of detail records per site in the signalling network (100), the delivery of the detail records to the client software applications (400, 402, 710, 712, 718) involving a point-to-multipoint communication.
摘要:
An ATR scanner and method for calibrating the same are disclosed. The scanner includes an ATR objective having a reflecting face and an optical port adapted to receive a first light beam, and to focus the first light beam to a point, at a location on the reflecting face such that the first light beam is reflected by the reflecting face and no portion of the first light beam strikes the reflecting face at an angle greater than the critical angle. A detector measures an intensity of light reflected from the reflecting face. A controller controls the location of the focal point and determines an intensity of light that was incident on the reflecting face as a function of the position on the reflecting face and an intensity of light that was reflected from the reflecting face as a function of position on the reflecting face.
摘要:
The present invention is related to a method to implement a column interleaving function, comprising the steps of: Providing a number of memories equal to the maximum number of columns in the interleaver function, Inputting a stream of data entities, Writing said data entities successively into a memory, until all memories are completely filled or until all data entities are written, Performing selection and permutation on said memories, Reading out said data entities in said permuted memories, in a memory-by-memory fashion.
摘要:
In an optical communications network employing a wavelength division multiplexing (WDM) system, different wavelengths of electromagnetic radiation are used to transmit different signals. Because the wavelength of electromagnetic radiation that a laser device emits can drift as the temperature of the laser device changes, channels can overlap causing cross-talk. Consequently, the present invention provides a laser wavelength locking control loop apparatus (5) comprising a wavelength selective device (9) and a photodector (11), coupled to a feedback controller circuit (13). Electromagnetic radiation emitted by the laser device (7) is provided to the wavelength selective device (9) which provides a first output signal at a first wavelength and a second output signal at a second wavelength. The first and second output signals are directed to the photodetector (11) so as to coincide when incident thereupon. A beat signal results from the coincidence of the first and second output signals and this is used to measure wavelength drift.
摘要:
An electronic module (200) having a configuration (212) for promoting efficient heat dissipation and a circuit board assembly (202, 205, 206) are provided such that when said electronic module (200) is inserted within said circuit board assembly (202, 205, 206) a portion of said electronic module (200) overlaps an EMI shield (205), with said portion of said electronic module (200) having a configuration (212) for promoting efficient heat dissipation and being external of said EMI shield (205).
摘要:
In an optical communications system employing a Wavelength Division Multiplexing (WDM) scheme, a laser device can be used to transmit electromagnetic radiation at different wavelengths, each different wavelength being known as a channel. In addition, a demultiplexer such as an Arrayed Waveguide Grating (AWG) can be used to separate out a multiplexed signal into its component channels. It is known that laser devices and AWGs are susceptible to wavelength drift as their temperatures change or aging occurs, in the case of the AWGs causing channels to overlap which results in cross-talk between adjacent channels. Consequently, the present invention provides an apparatus for detecting cross-talk and method therefor. To this end, a first and a second output signal from a wavelength selective device (9) are directed to be coincident upon a photodetector (11). A homodyne beat signal results from the coincidence of the first and the second output signal and the homodyne beat signal is used to measure wavelength drift.
摘要:
Compounds and methods for purifying oligonucleotides such as RNA and DNA. A target oligonucleotide is reacted with an orthoester linker comprising an affinity tag to form an orthoester oligonucleotide-orthoester linker conjugate which is subjected to a purification technique to separate the target oligonucleotide from impurities such as truncated oligonucleotides. The orthoester linker can he then removed under mild conditions to generate the target oligonucleotide in high purity.
摘要:
A flow cell, for detecting a fluidic sample separated by a sample separation apparatus, includes a cuvette, a flow channel formed at least partially in the cuvette and configured to enable a flow of the separated fluidic sample through the flow channel, an electromagnetic radiation inlet at which an excitation electromagnetic radiation beam is couplable into the cuvette, and an electromagnetic radiation outlet at which an emission electromagnetic radiation beam, generated by an interaction between the excitation electromagnetic radiation beam and the separated fluidic sample, is couplable out of the cuvette. A geometry of the cuvette is configured so that at least one point at the excitation backside surface of the cuvette is outside of a direct field of view of the electromagnetic radiation outlet.
摘要:
A polychromator system comprising: an optical element defining an aperture; a collimation mirror for receiving light via the aperture and reflecting substantially collimated light; at least a first dispersive optical component and a second dispersive optical component, each configured to disperse the substantially collimated light received from the collimation mirror by different amounts for different wavelengths and to provide cross-dispersed light having different wavelengths of light spaced along a first and second axis; and a focus mirror positioned to focus the cross-dispersed light onto a 2-D array detector to provide a plurality of aperture images of the aperture at a respective plurality of regions of the detector, each of the plurality of aperture images associated with a respective wavelength of the cross-dispersed light. Either one or both of the collimation mirror and the focus mirror is a freeform mirror having a reflective surface configured to mitigate effects of optical aberrations of the polychromator system over a plurality of the wavelengths of the cross-dispersed light along the first axis and the second axis and thereby optimise the resolution of the plurality of aperture images associated with the plurality of the wavelengths along the first axis and the second axis.
摘要:
Injector (40) for injecting a fluidic sample into a mobile phase in a sample separation apparatus (10), the injector (40) comprising a main flow path (100) between a fluid drive (20) and a sample separation device (30), wherein the fluid drive (20) is adapted to drive the mobile phase and the sample separation device (30) is adapted to separate the fluidic sample that is injected into the mobile phase, a discharge device (104) for discharging an, in particular predetermined, amount of the mobile phase from the main flow path (100), and a supply device (102) for supplying an, in particular predetermined, amount of the fluidic sample and/or of a solvent into the main flow path (100), wherein the discharged amount and the supplied amount compensate each other at least partially.