摘要:
Power-efficient, pulsed driving of capacitive loads to controllable voltage levels, with particular applicability to LCDs. Energy stored in a portion of the capacitive load is recovered during a recovery phase. Time-varying signals are used to drive the load and to recover the stored energy, thus minimizing power losses, using processes named adiabatic charging and adiabatic discharging.
摘要:
Disclosed herein are methods and apparatus for operating and deploying a broadband wireless network having at least one data transmission node and a plurality of CPE units, wherein there is a wireless data link at least in part between the data transmission node and the CPE units, and further wherein the management and configuration of the network is managed centrally and at least one of authorization, authentication, data stream prioritization or queuing is accomplished through the operation of the CPE units. According to one embodiment there is provided a user group manager that provides a user interface for at least one local service provider to manage information about end users served by the local service provider. In another embodiment, management and configuration of the network is managed using a device that communicates with CPE units and the data transmission nodes. The system and method further provides a data transmission node that includes routing capability, wherein the data transmission node is located with at least one CPE unit. In another embodiment, a network supervision and management device holds an original configuration file for each CPE unit wherein each CPE unit further includes a configuration file that includes an address reference to one or more of the supervision and management devices thereby providing for connectivity to the supervision and management devices and capability of redundancy when more than one supervision and management device is referenced.
摘要:
Disclosed herein are methods and apparatus for operating and deploying a broadband wireless network having at least one data transmission node and a plurality of CPE units, wherein there is a wireless data link at least in part between the data transmission node and the CPE units, and further wherein the management and configuration of the network is managed centrally and at least one of authorization, authentication, data stream prioritization or queuing is accomplished through the operation of the CPE units. According to one embodiment there is provided a user group manager that provides a user interface for at least one local service provider to manage information about end users served by the local service provider. In another embodiment, management and configuration of the network is managed using a device that communicates with CPE units and the data transmission nodes. The system and method further provides a data transmission node that includes routing capability, wherein the data transmission node is located with at least one CPE unit. In another embodiment, a network supervision and management device holds an original configuration file for each CPE unit wherein each CPE unit further includes a configuration file that includes an address reference to one or more of the supervision and management devices thereby providing for connectivity to the supervision and management devices and capability of redundancy when more than one supervision and management device is referenced.
摘要:
Disclosed herein are methods and apparatus for operating and deploying a broadband wireless network having at least one data transmission node and a plurality of CPE units, wherein there is a wireless data link at least in part between the data transmission node and the CPE units, and further wherein the management and configuration of the network is managed centrally and at least one of authorization, authentication, data stream prioritization or queuing is accomplished through the operation of the CPE units. According to one embodiment there is provided a user group manager that provides a user interface for at least one local service provider to manage information about end users served by the local service provider. In another embodiment, management and configuration of the network is managed using a device that communicates with CPE units and the data transmission nodes. The system and method further provides a data transmission node that includes routing capability, wherein the data transmission node is located with at least one CPE unit. In another embodiment, a network supervision and management device holds an original configuration file for each CPE unit wherein each CPE unit further includes a configuration file that includes an address reference to one or more of the supervision and management devices thereby providing for connectivity to the supervision and management devices and capability of redundancy when more than one supervision and management device is referenced.
摘要:
A method and apparatus for minimizing harmonic content in a digital signal driver circuit are disclosed. A digital input signal applied to an input node generates a corresponding digital output in a circuit with two or more MOS devices in cascode connection with each other. The slew rate of leading or trailing edge transitions associated with the output signal are controlled using one or more parasitic capacitances associated with the fabrication of two or cascode connected MOS devices. The two or more cascode connected MOS devices may further each have gate electrodes connected to a fixed potential so as to minimize the harmonic content. A control signal may further be applied to each gate electrode to turn off a leakage current path between source and drain electrodes. Harmonics may further be controlled by limiting a conductance between gate electrodes and fixed potentials using an active or passive device.
摘要:
An arrangement for feeding sheets from a sheet store to either one of a plurality of stations includes a movable carriage which receives sheets fed from the store and which has driving cogwheels for coaction with a fixed cog railway outside the carriage.The fixed cog railway includes a path selection slide that includes cog segments that can fit into the cog railway. The selector slide can be switched to either one of two possible positions by means of a processor-controlled, motor-driven arm.
摘要:
Method for building bridges and bridge built according to the method especially a girder bridge with one, two or more girders or longitudinal beams resting on supports at abutments or the like. The novelty lies therein that the girder or longitudinal beams have end portions extending beyond the supports at the abutments and that between such extending ends and the abutments are arranged anchoring devices which after being fixed to the ends of the extending ends of each girder exert a supporting moment to the portion of the girders between the abutments.
摘要:
A blood test instrument using a disposable cartridge and a method of measuring a blood sample using the instrument are disclosed. The instrument includes a cell counting station for counting blood cells by electrical resistance measurement, a pressure actuating component adapted to apply a pressure alternately on two flexible receptacles of a disposable cartridge removably placed in the instrument to cause flowing of a mixture of a blood sample and a liquid agent between the two receptacles to obtain proper mixing, and a conduit adapted to deliver the mixture to the cell counting station for counting. After measuring the blood sample, the instrument withdraws a washing liquid contained in another receptacle of the disposable cartridge and uses the washing liquid to clean the instrument and to deliver the mixture back to the cartridge for disposal.
摘要:
A disposable apparatus for use in blood testing includes a housing (21) having integrated means (41) for receiving a blood sample, a plurality of receptacles (28-33) for diluent and diluted sample, and a plurality of channels (34-39). Depressions are formed in a surface (27) of the housing to form the receptacles (28-33) and the channels. A diaphragm (40) seals the receptacles and the channels relative to said surface (27). When a pressure variation is applied to a portion of the diaphragm sealing a receptacle, liquid is caused to be displaced to or from that receptacle.
摘要:
A system and method for reducing reflections in a transmission line and for recovering energy from the load in the transmission during the process. At least three drive signal levels are utilized. The transition from the second level to the third level during a rising transition and the transition from the second level to the first level during a falling transition is timed to coincide with the arrival of the reflected signal from the immediately-preceding transition. A capacitor is advantageously used as the source for the intermediate drive signal levels and advantageously facilitates energy recovery and conservation.