188 results about "Frequency table" patented technology

A system and method is described for transmitting data from a remote unit to a hub station in order to transmit data across a wide area network, such as the Internet. The remote unit and the hub station have stored frequency tables that include the possible reverse link transmission frequencies. When a remote unit requests a frequency channel, the hub station broadcasts a message that includes the identifier of each remote unit that has requested a reverse link transmission channel. The list of identifiers from the hub station is in a specific order so that it can be stored into each remote unit's frequency table. Once the list of identifiers is stored, the remote unit can find its identifier's position within the frequency table to determine the frequency channel that was assigned by the hub station.

A profile-based loop optimizer generates an execution frequency table for each loop that gives more detailed profile data that allows making a more intelligent decision regarding if and how to optimize each loop in the computer program. The execution frequency table contains entries that correlate a number of times a loop is executed each time the loop is entered with a count of the occurrences of each number during the execution of an instrumented instruction stream. The execution frequency table is used to determine whether there is one dominant mode that appears in the profile data, and if so, optimizes the loop according to the dominant mode. The optimizer may perform optimizations by peeling a loop, by unrolling a loop, and by performing both peeling and unrolling on a loop according to the profile data in the execution frequency table for the loop. In this manner the execution time of the resulting code is minimized according to the detailed profile data in the execution frequency tables, resulting in a computer program with loops that are more fully optimized.

Supply voltage droop management circuits for reducing or avoiding supply voltage droops are disclosed. A supply voltage droop management circuit includes interrupt circuit configured to receive event signals generated by a functional circuit. Event signals correspond to an operational event that occurs in the functional circuit and increases load current demand to a power supply powering the functional circuit, causing supply voltage droop. The interrupt circuit is configured to generate an interrupt signal in response to the received event signal. Memory includes an operational event-frequency table having entries with a target frequency corresponding to an operational event. Operating the functional circuit at target frequency reduces the load current demand on the power supply, and supply voltage droop. A clock control circuit is configured to receive interrupt signal, access memory to determine the target frequency, and generate clock frequency adjustment signal to cause clock generator to adjust to the target frequency.

The invention discloses a multi-area scanning drive method for a smectic state liquid crystal display (LED), comprising the steps as follows: initiation: taking a line as a unit, dividing a display into W numbered areas along a vertical direction and generating an area lookup table correspondingly, an area subfield pulse pair number table and an area subfield frequency table; selecting a scanning mode, and determining a scanning sequence series corresponding to the scanning mode; successively reading each line number in the scanning sequence series; judging the line subsidiary area corresponding to the line number through the area lookup table while reading one line number, and determining the line pulse waveform corresponding to the line through the area subfield pulse pair number table and/or area subfield frequency table based on the subsidiary area of the line so as to output the line pulse, and outputting corresponding row pulse on each row of electrodes according to the image to be displayed on the line; and stopping outputting the pulses after the scanning sequence series is read out, and displaying the image. By using the invention, area unevenness of the smectic state liquid crystal display along the vertical direction is overcome and the image display quality is improved.

An apparatus and method for extracting signature candidates and optimizing a corresponding signature are provided. The apparatus includes a packet separator, a header parser, a traffic information generator, a substring extractor, and a signature candidate extractor. The packet separator separates a packet into a header and a payload. The header information parser parses the header information, and the traffic information generator generates traffic information. The substring extractor measures a frequency of appearing of a substring with a predetermined length in the separated payload for a constant observation period, and extracts a substring having a frequency higher than a predetermined setup value by updating the measured frequency information to a substring frequency table. The signature candidate extractor generates a signature by collecting the extracted substring information and the generated traffic information, updates a signature frequency table, and extracts a signature candidate with reference to information of the signature frequency table.

Power is conserved in a Global Positioning System (GPS) receiver (100) by shutting down selected components during periods when the GPS receiver (100) is not actively calculating the GPS receiver location. A low power time keeping circuit (200) accurately preserves GPS time when the selected components are deactivated. When the selected components are turned on in response to a wake-up command, time provided from the low power time keeping circuit (200), corrected for actual operating temperatures, and data from the GPS clock temperature/frequency table (224), are used to recalibrate time from a GPS oscillator (204). Positions of the GPS satellites are then estimated such that the real GPS time is quickly determined from the received satellite signals. Once real GPS time is determined from the detected satellite signals, the selected components are deactivated. The process described above is repeated such that accurate GPS time is maintained by the low power time keeping circuit (200).

A method of encoding input data (D1) in an encoder to generate corresponding encoded data (E2) is provided. The method includes: (a) splitting and/or transforming the input data (D1) into one or more data chunks, and analyzing symbols present in the input data (D1) and compressing the symbols as a function of occurrence of the symbols in the one or more data chunks; (b) generating one or more code tables, and/or one or more frequency tables, and/or one or more length of code word tables for the symbols present in the one or more data chunks; (c) computing one or more sets of indices relating the symbols in each data chunk and/or the compressed symbols to entries in the one or more code tables, and/or the one or more frequency tables, and/or the one or more length of code word tables; and (d) assembling the one or more sets of indices, together with the one or more frequency tables, and/or the one or more code tables, and/or information indicative of such one or more tables, for generating the encoded data (E2). There is also provided an encoder (50) which utilizes the method, together with a corresponding decoder (60), wherein the encoder (50) and the decoder (60) in combination form a codec (100).

The invention provides a method for quickly achieving the target capacity of a unit. The method comprises obtaining a current compressor frequency value corresponding to a current water temperature difference from a temperature difference corresponding frequency table in real time; obtaining a refrigeration compressor frequency correction coefficient value corresponding to the current outdoor ambient temperature according to a refrigeration correction coefficient table during refrigeration; obtaining a target refrigeration compressor frequency value according to a preset refrigerating capacity, a current refrigerating capacity, the current compressor frequency value, and the refrigeration compressor frequency correction coefficient value; obtaining a heating compressor frequency correctioncoefficient value corresponding to the current outdoor ambient temperature according to a heating correction coefficient table; and obtaining a target heating compressor frequency value according toa preset heating capacity, a current heating capacity, the current compressor frequency value, and the heating compressor frequency correction coefficient value. The method can quickly achieve the target capacity of the unit, enables the compressor to quickly achieve the target refrigerating capacity or heating capacity set by the user, thereby avoiding the water temperature fluctuation in use.

The invention discloses a temperature control method and a mobile terminal, and belongs to the field of electronic technologies. The method comprises the steps that when the mobile terminal detects that the temperature difference of a current temperature and a startup initial temperature is within a first temperature difference range, the average work frequency of a processor and the current upper limiting frequency of the processor are obtained; when the frequency, located on the next level of the upper limiting frequency, in an adjustable frequency table is higher than the average work efficiency of the processor, the frequency of the next level is determined as the updated upper limiting frequency of the processor. According to the method, when the temperature of the mobile terminal rises relative to the initial temperature, the upper limiting frequency of the processor is adjusted and updated in time, the updated upper limiting frequency is made to be lower than the current upper limiting frequency and higher than the current average working frequency of the processor, and then the temperature rising speed of the mobile terminal can be effectively decreased on the premise that the mobile terminal performance is not affected.

The invention provides a method for deploying user interfaces in a mobile terminal with a touch screen. The method includes unlocking the mobile terminal, and then detecting handheld modes of users of the mobile terminal before the mobile terminal enters the user interfaces; judging whether page use frequency tables and application program use frequency tables are available in the mobile terminal or not; sorting a plurality of application programs in most frequently used pages according to the application program use frequency tables if the page use frequency tables and the application program use frequency tables are available in the mobile terminal; deploying the application programs in the most frequently used pages according to sorting results of the multiple application programs, the handheld modes and use habit of the users; utilizing the most frequently used pages as active pages and displaying the active pages so as to enable the mobile terminal to enter the user interfaces. The method has the advantages that the most frequently used application programs can be arranged at certain positions according to the use habit of the users by the aid of the method for deploying the user interfaces, the users can easily touch the certain positions, accordingly, the application programs can be efficiently started by the users, and the use experience can be improved for the users. The invention further provides the mobile terminal.

Systems and methods of operating an interference prevention system in a radar altimeter are provided. A method includes generating integer values with at least one pseudorandom noise sequence generator. The generated integer values are used as indexes to select at least one of start frequencies and stop frequencies from at least one frequency table for frequency modulated continuous wave (FMCW) ramps for a generated radar signal. The selected at least one of the start frequencies and the stop frequencies is provided to a frequency synthesizer. The at least one of start frequencies and the stop frequencies are used in generating transmit frames of the radar signal with the frequency synthesizer.

Satellite receiving channel data 810 are described in a network information table (NIT) in a random fashion. Frequencies in the redelivering facility in a community receiving system are arranged in order of increasing frequencies for each of the networks. In a receiver unit, the frequencies 753 of the satellite receiving channel data 810 are rearranged in order of increasing frequencies and are registered to the receiving frequencies 831 in a frequency conversion table 830. The receiver unit selects the frequency according to wire frequencies 822 of a wire channel 821 in a wire frequency table 820 and registers the wire frequency of a channel that can be normally received to a conversion frequency 832 in the frequency conversion table 830. Therefore, the frequency data contained in the broadcast signals before being redelivered are corresponded to the redelivering frequency of signals really transmitted through a cable on the receiver unit side in the community receiving system.

An electronic device and a method for operating a touch panel of the electronic device are provided. The electronic device includes a touch panel, a driving unit and a processing unit. The driving unit is coupled to the touch panel, and drives the touch panel through a scanning frequency. The processing unit is coupled to the driving unit. When a peripheral component of the electronic device is enabled or connected to the electronic device, the processing unit looks up a working frequency table according to character information of the peripheral component, so as to obtain frequency information of the peripheral component, and determines whether or not to change the scanning frequency of the driving unit according to the frequency information of the peripheral component.

The invention discloses a method for monitoring the fatigue stress of a ship power pipeline, and relates to the technical field of safety control of the power pipeline. The method comprises the following steps: establishing a stress analysis model of the power pipeline, and generating a stress comparison table of all monitoring points of the pipeline under a unit load condition; obtaining a time history curve of low-period cycle load and high-period cycle load on the pipeline during a ship navigation process; calculating and drawing a cumulative frequency table of low-period stress cycles of the monitoring points; calculating an equivalent gravity load factor of the pipeline; calculating the cumulative frequency table of high-period stress cycles of the monitoring points; and merging the cumulative frequency table of the low-period stress cycles with the cumulative frequency table of the high-period stress cycles of the monitoring points to obtain a complete cumulative frequency tableof stress cycle, so as to complete the fatigue analysis and check of the monitoring points of the ship pipeline. By adopting the method disclosed by the invention, the setting of sensors can be reduced, the situation that the sensors are directly attached to dangerous points for measurement is avoided, and the stress monitoring of any area in the ship power pipeline is completed indirectly.

The invention provides an ultrasonic ranging method and device based on frequency adjustment and electronic equipment and relates to the technical field of ultrasonic ranging. The ultrasonic ranging method is characterized by, according to a preset transmitting time interval, randomly selecting any frequency in a preset frequency table as a transmitting frequency and transmitting ultrasonic signals in preset number of periods; receiving return wave signals and recording propagation time from transmitting the ultrasonic signals to receiving the return wave signals; calculating a frequency component, having the largest amplitude in the frequency domain, of the return wave signals; and when the frequency component is equal to the transmitting frequency in two consecutive transmitting, calculating the distance between ultrasonic ranging equipment and an obstacle according to the propagation time of the last transmitting. The ultrasonic ranging method and device based on frequency adjustment and the electronic equipment can autonomously adjust the work frequency of ultrasonic ranging, thereby improving ultrasonic ranging accuracy and anti-interference performance, effectively avoiding mutual interference of multiple ultrasonic ranging devices during working, and realizing cooperative work of the multiple ultrasonic ranging devices.

The invention belongs to the field of control over a motor, and provides a rotation speed control circuit and method for the motor. The rotation speed control circuit comprises a detection circuit used for obtaining the work currents of the motor, a single-chip microcomputer used for controlling the pulse frequency according to a current frequency table and the work currents to output pulse signals to a driving circuit of the motor, and the driving circuit used for controlling the rotation speed of the motor according to the pulse signals. According to the rotation speed control circuit and method for the motor, the detection circuit detects the work currents fed back by a motor end, after the work currents are analyzed and processed by the single-chip microcomputer, the single-chip microcomputer outputs the pulse signals to the driving circuit of the motor by controlling the pulse frequency, real-time control over the rotation speed of the motor is achieved, the utilization rate of the motor is effectively improved, the service life of the motor is prolonged, energy consumption is effectively saved, and meanwhile the noise of the motor is lowered.

A systematic method for detecting meta-ideas used to expanding a skeletal structure. The folder label for each individual first level skeletal folder is placed in a separate collection, and predefined noise words are removed therefrom. A table is tabulated for each collection counting the single word frequency of each word. Words whose frequency falls below a predetermined threshold are removed from the each frequency table. A combined frequency table is created by joining the individual frequency tables wherein meta-ideas are extrapolated from the results of the combined frequency table.

The invention discloses a method for code compression for a word library, which comprises the following steps that: A, a first frequency table is generated after various words in the word library are counted, and comprises a first letter frequency data group and a plurality of subsequent letter frequency data groups; B, each group of frequency data in the first frequency table is sorted according to the sequence, and frequency data of the same order location which groups of frequency data are positioned in are added to obtain a second frequency table comprising a plurality of sum frequencies; C, the sum frequencies are subjected to Huffman coding to obtain corresponding binary codes, and the obtained binary codes are allocated to the order location corresponding to each sum frequency in the second frequency table to generate a coding table; and D, letters of the words in the word library are substituted to generate binary coding corresponding to the words according to the binary codes corresponding to the order locations where first letters and various subsequent letters of each letter in the coding table are positioned. The invention also provides a system for code compression for the word library, and a method and a system for decoding codes in the word library. The invention improves the compression rate of word codes in the word library, and has simple decoding.

The method includes steps: (a) based on needs of device, determining lower frequency limit of phase discrimination; (b) embedded type microprocessor selects n pieces of phase discrimination frequencies at random, and the said microprocessor controls hopping pattern generator to generate hopping pattern at random; (c) equal interval hopping frequencies permutation table is designed for each phase discrimination; all basic frequencies table selectable is formed; (d) picking up a group of frequencies and comparing them with lower frequency limit so as to generate current selecting carrier frequency table; (e) pseudo-random hopping pattern generator and current selecting carrier frequency table determines hopping frequencies sequence table, microprocessor selects control parameters of frequency synthesizer; (f) controlling divide down ratio N and reference proportion by subtraction Ro; (g) signal of pseudo-random non equal interval hopping pattern is output from frequency synthesizer.

A communication system, a master device, and a communication method are provided. The communication system includes a master device and at least one slave device. The master device periodically sends a plurality of synchronous messages at intervals of a first predetermined time. The at least one slave device respectively receives the corresponding synchronous messages via wireless communication. The master device and the at least one slave device synchronously switch an operating frequency of wireless communication according to a frequency table.

The invention applies to the technical field of digital television and provides a television program searching method, an STB (Set Top Box) and a shared server. The method comprises the following steps: receiving a television program data request which is inputted by a user; sending the television program data request to the shared server; and receiving the television program data obtained by the shared server through searching according to the television program data request. The television program searching method, the STB and the shared server enable STB users to be free of participating the television program searching process. As long as the STB is connected to the net and a signal line, the STB can lock the frequency and search channels in no need of locking the frequency and searching the channels by the users, and program names and frequency tables can be updated in the fastest way in real time, and programs can be managed, thereby improving the working efficiency of the STB.