摘要:
A roaming communication method in the field of communication technologies includes: obtaining a location update reject message sent by a Home Location Register (HLR) of a subscriber to a Visitor Location Register (VLR) of the subscriber; obtaining subscriber data from account information of the subscriber, where the subscriber data includes a local number and subscription information of the subscriber; and simulating the HLR to send the subscriber data to the VLR of the subscriber so that the subscriber can communicate in the visited network. The embodiments of the present invention also provide a roaming communication apparatus and system. The present invention enables a roaming subscriber to enjoy the communication service in a roaming network where no roaming agreement is signed without changing a Subscriber Identification Module (SIM). The solution is easy and convenient and saves expenses of the subscriber. At the same time, this attracts subscribers without roaming authority to use the network of an operator, thereby increasing the revenue of the operator.
摘要:
This invention relates to a method comprising contacting a microorganism and/or an infectious agent with an effective amount of a polymer composition to reduce or eliminate the reproductivity, metabolism, growth and/or pathogenicity of the microorganism and/or infectious agent, the polymer composition comprising water, a water-soluble film forming polymer, a chelating agent, and a surfactant.
摘要:
Apparatus and method for allowing fine adjustment of a diffraction grating within an optical wavelength-division multiplexing (WDM) device and for maintaining the grating in near-littrow alignment (i.e., to within an accuracy of +/−0.003 degrees) over the device's operating temperature range. Precise alignment is maintained by use of a 0.3 PPM/° C. “super invar” material in a wedge-shaped grating mount to eliminate an angular shift of the grating over typical operating temperatures. The wedge-shaped grating mount and thereby the orientation of the surface of the grating are adjusted precisely and maintained in position over the operating temperatures via a dual flexure structure wherein four precision adjustment screws with jeweled contact tips are tightened to achieve the desired orientation and stiffen the structure and then locked via locking nuts to prevent slippage.
摘要:
A produce data collector with minimal spectral distortion. The produce data collector includes a light pipe having entrance and exit ends through which a portion of light reflected from a produce item travels, and a spectrometer adjacent the exit end of the light pipe which splits the portion of light into a plurality of wavelengths and which produces signals associated with the wavelengths for identifying the produce item.
摘要:
An adaptive filter circuit for sampling a reflected voltage of a transformer of a power converter includes a first switch for receiving the reflected voltage, a resistor having a first terminal and a second terminal, the first terminal of the resistor being coupled to the first switch, a capacitor coupled to the second terminal of the resistor for holding the reflected voltage, and a second switch coupled to the resistor in parallel, wherein the resistor and the capacitor develop a filter for sampling the reflected voltage which is sampled without filtering by the filter in a first period during a disable period of a switching signal and also sampled with filtering by the filter in a second period during the disable period of the switching signal.
摘要:
A control circuit of the power converter according to the present invention comprises a feedback circuit, an output circuit and an adaptive clamping circuit. The feedback circuit generates a feedback signal in accordance with an output of the power converter. The output circuit generates a switching signal in accordance with the feedback signal for regulating the output of the power converter. The adaptive clamping circuit limits the level of the feedback signal under a first level for a first load condition. The feedback circuit determines a slew rate of the feedback signal for increasing the level of the feedback signal from the first level to a second level. The adaptive clamping circuit is disabled and the level of the feedback signal can be increased to the second level for a second load condition.
摘要:
The embodiment of the present invention discloses a method and a device for generating subscriber information. The method for generating subscriber information includes: obtaining original subscriber information sent by a home location register (HLR) in a home network to a mobile switching center (MSC) in a visited network of the roaming subscriber; identifying the original subscriber information and generating new subscriber information according to an identification result and prerecorded subscriber subscription service information; and sending the new subscriber information to the MSC in the visited network of the roaming subscriber. The embodiment of the present invention obtains the original subscriber information through signaling monitoring or signaling interception, and then modifies the original subscriber information. Thus, a subscriber can use various services provided by the visited network of the roaming subscriber.
摘要:
An improved structure for a USB flash drive includes an accommodating base, a circuit board, a sliding seat, a sliding key and a frame body. The circuit board having a connecting terminal on one end thereof and a fingerprint recognizer thereon, is inserted into a bottom of the sliding seat, such that the fingerprint recognizer is exposed to a surface of the sliding seat. When in operation, push the sliding key forward to expose the fingerprint recognizer, and further forward movement of the sliding key will cause the sliding seat to move forward, such that the connecting terminal is exposed from the accommodating base. When not in operation, pull the sliding key rearward, such that the sliding key covers the fingerprint recognizer. Further rearward movement of the sliding key will cause the sliding seat to move rearward, such that the connecting terminal is retracted in the accommodating base.
摘要:
A coupler assembly for an optical backplane system having a backplane and two or more circuit packs connected to that backplane. Each circuit pack has an optical transceiver and the backplane has an optical pipe (e.g., an array of waveguides) adapted to guide optical signals between the transceivers of different circuit packs. A coupler assembly is provided for each transceiver to couple light between that transceiver and the optical pipe. Advantageously, the coupler assembly has a movable optical element that can accommodate possible misalignment between the backplane and the circuit pack. In one embodiment, the movable optical element is an array of MEMS mirrors, each mirror adapted to direct light between an optical transmitter or receiver and the corresponding waveguide of the optical pipe.