153 results about "Frequency level" patented technology

Adaptive multi-mode digital control schemes that improve the light-load efficiency (and thus the overall average efficiency) in switch-mode power converters without causing performance issues such as audible noises or excessive voltage ripples. Embodiments include a switch-mode power converter that reduces current in the power converter using a second pulse-width-modulation (PWM) mode before reaching switching frequencies that generate audible noises. As the load across the output of the power converter is reduced, the power converter transitions from a first PWM mode in high load conditions to a first pulse-frequency-modulation (PFM) mode, then to a second PWM mode, and finally to a second PFM mode. During the second PFM mode, the switching frequency is dropped to audible frequency levels. Current in the power converter, however, is reduced in the second PWM mode before transitioning to the second PFM mode. Therefore, the power converter produces less or no audible noise in light load conditions where the switching frequency drops to audible frequency levels, while achieving high efficiency across varying load conditions.

In one embodiment of the invention, an integrated device is described that employs a mechanism to control power consumption of a graphics memory controller hub (GMCH) through both voltage and frequency adjustment of clock signal received from a clock generator. The GMCH comprises a graphics core and a circuit to alter operational behavior, such as the frequency of a render clock signal supplied to the graphics core. The circuit is adapted to monitor idleness of the graphics core and reduce a frequency level of the render clock signal if the idleness exceeds a determined percentage of time.

In various embodiments, points from flood maps (e.g., geospatial flood risk zoning maps) may be used in generating a flood frequency versus flood elevation curve for reducing the uncertainty in the flood risk assessment. In some embodiments, geospatial flood elevation lines for flood elevation lines at different flood frequency levels may be defined based on elevation datasets where there are inconsistencies between the elevation datasets and flood maps that were generated. The flood frequency versus flood loss curve may be derived based on the computed flood frequency versus flood elevation curve, digital elevation datasets, and collected damage curve. In some embodiments, the flood risk rating may also be derived and a flood risk assessment report may be generated.

A memory controller and methods for managing efficient writing to a flash memory are presented. Fresh data is written to at least one block of the flash memory. During a space reclamation process, other data, previously written to the flash memory, is relocated to at least one other block of the flash memory, such that the fresh data and the relocated data always are maintained in separate blocks of the flash memory. During writing, an update frequency level is selected for the fresh data from among multiple update frequency levels and the fresh data is written to a block that is associated with the selected update frequency level. During space reclamation, a plurality of blocks, space of which is to be reclaimed, is selected and the valid pages thereof are copied to at least one destination block.

Apparatus, and associated method, for dynamically selecting frequencies upon which to define communication channels in a communication system, such as a wireless mesh network. Frequency levels are selected for global use throughout the entire mesh network. And, frequency levels upon which to define local communication channels for individual nodes of the mesh network are also selectable.

A transport refrigeration system is provided with a control apparatus including an inverter and a microprocessor, with the microprocessor receiving signals representative of sensed values of the compressor discharge temperature and pressure, as well as the suction pressure, and controlling the inverter to responsively provide a selective level of electrical voltage and frequency to the compressor in order to maintain a desired compressor envelope.

The object of the present invention is to realize a low-invasive underground exploration apparatus, system, and method which are capable of specifying the kind, three-dimensional position, and amount of a substance present in the ground. The underground exploration apparatus, system, and method includes: measuring, at multiple points, a high frequency voltage that appears upon conduction of high frequency current through the ground to obtain measurement results at two or more frequency levels; employing an ground model using the finite element method, the boundary element method, an impedance network, or the like to estimate a substance in the ground by changing unknown quantities of the ground model such as local dielectric constant and electric conductivity so as to make an error between the actual measured value and the calculated value smaller; and displaying input information of the ground model and results of the estimation processing two-dimensionally or three-dimensionally.

The invention provides an alignment system, an alignment method and an enhanced alignment mark for lithography equipment. By taking advantage of a designed special alignment mark structure, the image signal of the alignment mark can be obtained through an alignment imaging system; through Fourier transformation, the image signal of the alignment mark is conversed to a frequency space so as to extract the frequency information of the marks in different levels; and through Fourier inverse transformation, the alignment signals of each corresponding frequency level are obtained, and contain the inner structure and phase information of the alignment marks; at last, the coarse alignment is carried out through original signals or obtained low level frequency; by making use of the alignment signals of high level frequency to do precision alignment, alignment resolution and precision are enhanced. Moreover, the invention also provides two types of enhanced alignment marks to enhance the signal strength of frequency component in special level, increases the signal-to-noise ratio of the signal of the level and reduces alignment error.

A GPS receiver having channel clusters each having a memory-enhanced channel and several standard tracking channels. The memory-enhanced channel includes a signal memory for accumulating carrier frequency leveled signal samples over several epochs into supersamples for an epoch. During an acquisition mode the memory-enhanced channel borrows code correlators from the tracking channels and the carrier clock to the tracking channels is disabled. The supersamples are accumulated in the signal memory in realtime and then played back by the code correlators at a faster rate while the signal memory is accumulating a new set of supersamples. During a tracking mode, the signal memory is bypassed, the borrowed code correlators are returned and the carrier clock is enabled to the tracking channels.

A charging method and system. The method includes detecting and monitoring by a computer processor, a frequency signal associated with an input voltage signal used for powering power consumption devices at a first specified location. The computer processor generates frequency level data associated with the monitoring. The computer processor receives a request to enable a charging process for charging a rechargeable power source and power source data associated with the rechargeable power source and a user. In response to the request, the computer processor enables a customized charging process associated with charging the rechargeable power source based on the frequency level data and/or the power source data.

The invention provides an AC-DC rectifying device which comprises a PFC power factor correction module, a DC busbar capacitor and a DC-DC convertor module. The DC busbar capacitor is connected in parallel between at least two PFC power factor correction modules in parallel connection and at least two DC-DC convertor modules in parallel connection. In the invention, the PFC power factor correction module and the DC-DC convertor module are connected in parallel, the ripple current of on-off frequency level output by the power factor correction to the DC busbar capacitor is reduced, meanwhile, the ripple current output by the DC busbar capacitor to the DC-DC convertor module is reduced, the heat productivity of the DC busbar capacitor is reduced, the service life of the DC busbar capacitor is prolonged, and the service life of the whole DC-AC rectifying device is further prolonged.

The invention discloses a display method of contact information, which is applied to a mobile terminal. The mobile terminal is internally stored with a contact list comprising multiple contact items. The display method comprises the following steps of establishing a communication record list of contacts, wherein the communication record list comprises the communication times of each contact who is in communication with the mobile terminal and a timestamp within a time period T; setting a display rule of the contact items, wherein the display rule comprises the following points of dividing communication frequency levels of the contacts and setting the background color of the contact items corresponding to different communication frequency levels or the distinguishing effect of a graph logo; and searching and calculating the communication record list, and displaying the contact list according to the display rule of the contact items. According to the display method disclosed by the invention, information amount is increased on the basis of the display method of the contact list of an existing contact book, the contact situation between each contact and a user can be clearly known by the user according to the personalized display effect, convenience is provided for the user to search the contacts to a certain degree, and the user operation experience is improved.

In accordance with a first embodiment of the present invention, a method for improving synchronization of communications between a first port and a second port is provided, the method performed at the first port and comprising: inserting skip symbols into a transmission stream for transmissions from the first port to the second port, wherein the skip symbols are inserted at a first average frequency level; detecting a lack of synchronization between the first port and the second port; and inserting skip symbols into the transmission stream at a second average frequency level greater than the first average frequency level in response to the detecting.

The present invention provides a method for automatically initiating the data synchronization and the realizing device and realizing system thereof, the device comprises the following components: a data synchronizing unit which is used to collocate frequency level for the data entry according to the using frequency of the data entry and collocate data synchronization strategy for the data entry according to the frequency level; and an information acquiring and transmitting unit which is used to realize the data communication of the equipment that needs to be synchronized. The invention realizes doing data synchronization for the data amending of the recording item of the linkman with a high using frequency, avoids the generating of the situation that the data amending of the recording item of the linkman with a low frequency frequently doing data synchronization, achieves the goal that the data synchronization is automatically and timely initialized, and reduces the trouble of factitiously tracing the variation state of the address book and initiating the data synchronization.

The invention provides a passive microwave remote sensing instant ground surface emitting rate estimation method and device. The method or device comprises a step or a device for calculating the instant ground surface emitting rate under the clear sky condition through simultaneously observing the ground surface data by a satellite-borne passive microwave sensor and a middle-resolution imaging spectrograph, a step or a device for obtaining the horizontal and vertical polarization instant ground surface emitting rate at different frequencies, a step or a device for determining a microwave polarization difference index and the polarization rate according to the same frequency horizontal and vertical polarization according to thebrightening temperature of the same frequency horizontal and vertical polarization, a step or a device for calculating the horizontal emitting rate of the ground surface emitting rate under the cloud covering condition through building a quadratic polynomial and a linear regression equation according to the horizontal polarization emitting rate of the instant ground surface emitting rate, the microwave polarization difference index and the polarization rate. By using the method and the device in the technical scheme, the zoned local blocking test is performed in the global range; the estimation of the ground surface emitting rate under the global cloud layer covering condition is realized; important data basis is provided for the ground surface temperature reversion and atmospheric correction calculation.

Systems and methods are provided, which facilitate operations planning, dispatch, regulation control, and autonomous control performance. The disclosure also facilitates systems and methods for utilization of synthetic primary frequency response, synthetic inertia, regulation and load following/ramping reserve capabilities from Demand Response and Distributed Energy Resources for balancing demand and supply and maintaining frequency levels across a power grid.

To determine whether or not to data is compressed at a timing when a non-volatile memory device receives the data from a host apparatus. A storage controller transmits a specified logical address range, an update frequency level of the specified logical address range, and specified data to a device controller. On the basis of the update frequency level of the specified logical address range, the device controller determines whether the specified data is compressed or not. When determination is made that the specified data is compressed, the device controller compresses the specified data to generate compressed data, and writes the compressed data into a non-volatile memory. When determination is made that the specified data is not compressed, the device controller writes the specified data into the non-volatile memory.