87 results about "Reference intervals" patented technology

Instead of normalizing time reference of independent spatially-located clocks using a reference tag transmission from known location, the present invention uses an interarrival time interval between a pulse pair of UWB pulses as a timing metric. Thus, a method of synchronizing spatially-located clock or normalizing time indications thereof comprises transmitting a UWB pulse pair, determining at first and second monitoring stations a respective count value indicative of a locally measured time interval between received pulse pairs, determining a ratio between clock counts of first and second monitoring stations, and utilizing the ratio to determine clock skew, e.g., a timing correction to be applied to respective local clocks of the monitoring stations. A corresponding system comprises a reference tag transmitter that transmits a pulse pair of UWB pulses to define a time reference interval, a first independent receiver that receives the pulse pair to generate a first count value indicative an interarrival interval between the pulse pair, a second independent receiver that receives the pulse pair to similarly generate a second count value, and a processor hub responsive to the count values to determine a ratio corresponding to the ratio of respective clock frequencies of the first and second receiver clocks. Once the correction is applied, time-of-arrival information from object tag transmissions may be used to determine object location with sub-foot position accuracies.

A semiconductor memory device includes a memory cell array and a main controller. The memory cell array includes a plurality of memory bank arrays, and each of the memory bank arrays includes a plurality of pages. The main controller counts a number of accesses to a first memory region of the memory cell array, generates at least one victim address of at least one neighbor memory region that is adjacent to the first memory region and performs a scrubbing operation sub-pages of the pages corresponding to the at least one victim address when the counted number of accesses reaches a first reference value during a reference interval.

The present invention discloses method and device for detecting pulse wave by means of cardiac symbol signal. Through detecting the temporal interval between the R wave and the pulse wave, obtain reference interval value, locating searched pulse wave amplitude with the reference interval value and obtaining reference pulse wave amplitude under different pressures, the mean pressure, the systolic pressure and the diastolic pressure are calculated by means of the ratio process. Compared with the available method to search pulse wave peak directly in the pulse wave signal, the present invention has raised anti-jamming capacity and raised blood pressure measuring accuracy especially in case of sports and arrhythmia.

A method and apparatus adjusts a timing of state change of an electronics apparatus having an input device by measuring user's input speed for the input device and a distance of user's finger from the input device. The method includes the steps of measuring a current interval CI between recent two input operations in a series of input operations conducted through the input device, calculating an average interval AI of the series of input operations, calculating a reference interval RI determined from the equation: RI=K×AI, where K denotes a proportional coefficient, determining whether a current interval CI is equal to or less than the reference interval, and suspending an occurrence of the second system state change until a first system state has been responded in case when the current interval CI is equal to or less than the reference interval RI.

Non-invasive spectrophotometric monitoring of oxygen saturation levels based on a combination of continuous wave spectrophotometry (CWS) and phase modulation spectrophotometry (PMS) is described. First information representative of absolute oxygen saturation levels in relatively shallow regions of a patient tissue volume are acquired from PMS-based monitoring thereof during a reference interval. Second information representative of non-absolute oxygen saturation levels in relatively deep regions of the tissue volume are acquired from CWS-based monitoring thereof during the reference interval. Based on the first and second information acquired during the reference interval, a mapping is automatically determined between the second information and estimated absolute oxygen saturation metrics for the relatively deep regions. On a continuing basis during a monitoring interval subsequent to the reference interval, the second information continuously acquired from CWS-based monitoring of the tissue volume are continuously mapped into estimated absolute oxygen saturation metrics, which are continuously displayed on a display output.

A first device (110) for distance measurement via wireless communication (130) uses a ranging protocol for determining a distance (140) to a second device (120) via a round trip time measurement, wherein first time data represents the round trip time and second time data represents a response time between receiving a request and sending a corresponding acknowledge. The second device receives the round trip time and determines the distance. The first device determines third time data by subtracting from the first time data a calculated travelling time of the messages between the first device and the second device based on the determined distance, and determines identifier data indicative of hardware and/or software present in the second device. The device then obtains, from a database based on the identifier data, a reference interval value, and verifies whether the determined distance is reliable by comparing the third time data to the reference interval value.

A method for calculating orientation changes within a borehole using a gyro sensor to detect angular deflection rates in an attitude reference interval as a MWD system is moved from a first to a second location within the borehole. A compass shot may be taken at one or more of the first and second locations using a magnetometer and accelerometer or gyro sensor and accelerometer. Tieback and/or overlap processing may be applied to increase the accuracy of measured orientation within the borehole. Additionally, tieback and/or overlap processing may be applied to adjust sensor model parameters in response to discrepancies between calculated and measured locations. Iterated calculations of orientation change between subsequent intervals may allow MWD orientation to be computed for an entire drilling operation using only a single compass shot.

The invention provides a method for identifying a pressure sensitive electronic whiteboard by touch, comprising the following steps of: presetting strength reference intervals of three states including mouse operation, writing pen operation and erasing operation; when the body of the pressure sensitive electronic whiteboard is pressed, detecting the contacted point of X-position on an X work surface; detecting internal parameters Z1 and Z2 of a touch screen for reflecting the relationship between the contacted point and the X work surface and a Y work surface; expressing a value of a contact resistor RTOUCH by a computing formula; and by post-processing treatment, converting the value of the contact resistor RTOUCH into a pressure value of the pressed pressure sensitive electronic whiteboard, and comparing the pressure value with the strength reference interval and judging so as to distinguish the type of the press on the pressure sensitive electronic whiteboard, which belongs to the three states including mouse operation, writing pen operation and erasing operation corresponding to three operation modes of the writing pen, the finger and the fist palm. Therefore, the method has the advantage that the automatic identification of three operation modes of the writing pen, the finger and the fist palm is supported on the pressure sensitive electronic whiteboard, thereby achieving the direct interactive operation between a user and the whiteboard.

The adjustment method is disclosed in that a predetermined reference interval in a main scanning direction is compared with each interval in the main scanning direction obtained by reading a sheet so that each joint of image is located between two parallel lines, a start pixel and an end pixel to read image data at each joint are determined and adjusted by calculating each interval difference, a reference straight line extending along the main scanning direction is compared with each of the plurality of straight line images extending along the main scanning direction at joints of images, and a delay time for reading sensors is adjusted by calculating an average value of relative displacement amounts.

The invention discloses a method and a system for operation and maintenance management platform monitoring and fault maintenance. The method comprises the following steps: obtaining monitoring index data according to a preset sampling frequency, the monitoring index data being index data influencing the stable running of an operation and maintenance management platform and oriented to a user or service viewpoint; carrying out real-time processing on the obtained monitoring index data to generate a dynamic trend line with regard to the real-time changes of various monitoring indexes changing with time; carrying out real-time monitoring on the dynamic trend line, and determining the operation and maintenance management platform to be in a normal state or a system abnormity state oriented to the user or service viewpoint according to the relationship between the dynamic trend line and a reference interval; carrying out system fault management and maintenance on the real-time monitoring result. Hence, the embodiment of the invention provides a single and efficient system abnormity robust judgement oriented to a user or service viewpoint, adequately makes up a monitoring scheme based on an infrastructure and oriented to the user or service viewpoint, and greatly improves the capacity of providing comprehensive and effective monitoring and fault management on an operation and maintenance system.

A system and method of correcting an alignment error of an array inkjet head having a plurality of head chips to print a main scanning line can include determining a reference head chip, printing a plurality of reference lines in the main scanning direction to be separated from one another at a reference interval in a sub-scanning direction using the reference head chip, and printing a plurality of test lines which can be offset by a multiple m, where m is an integer, of a test interval with respect to the reference interval using other head chips, and determining one of the plurality of test lines that matches any of the plurality of reference lines of each of the head chips, and determining an amount of offset of the determined test line as an amount of offset of each head chip.

A universal series bus (USB) frequency synchronous apparatus using a start of frame (SOF) signal generated by a master device to mark a reference interval is disclosed. The frequency synchronizing apparatus includes a frequency divider, a counter unit with a default pulse number, an arithmetic unit, and an adjusting unit. The frequency divider divides a high frequency signal by a variable frequency factor to generate a lock frequency signal. The counter is used to detect a pulse number of the lock frequency signal at a reference interval and obtain a pulse difference between the default pulse number and the detected pulse number of the lock frequency signal.

There is provided a laser gauge interferometer with high measurement precision, which uses laser beam interference, includes: a measurement interferometer which generates a measurement output corresponding to a displacement of a moving member; and a correction interferometer which generates a measurement output corresponding to a change in refractive index of air at a constant reference interval. An arithmetic processing device computes a measurement target displacement amount for which the influence of the change in refractive index of air is corrected. A correction laser beam from the correction interferometer passes through the measurement interferometer and thus travels on the same optical path as an optical path of a correction laser beam from the measurement interferometer to become interference light corresponding to the change in refractive index of air through which a measurement laser beam passes, and then enters the arithmetic processing device.

In an apparatus for controlling an engine, an irregular-region start detector detects that a predetermined-directed level change in an input signal is synchronized with a start of appearance of an irregular region thereof. An irregular-region end detector detects that a predetermined-directed level change in the input signal is synchronized with an end of the irregular region thereof. A fixing unit fixes a reference interval to a predetermined value when it is detected that the predetermined-directed level change in the input signal is synchronized with the start of appearance of the irregular region thereof. A resetting unit resets the reference interval from the predetermined-value to one of the measured intervals when it is detected that the predetermined-directed level change in the input signal is synchronized with the end of the irregular region thereof.

The invention discloses a method and a device for adjusting subtitles in a video and also a server, relating to the technical field of computers. The method comprises the following steps: acquiring avideo file to be played and a subtitle file of the video file; performing voice activity detection on an audio stream of the video file to obtain an effective audio interval; combining a subtitle interval of the subtitle file and the audio interval in a time domain; according to the combined interval, shifting the subtitle interval which exceeds the audio interval in the time domain into the corresponding audio interval to obtain an adjusted reference interval; determining subtitles in a reference interval as adjusted subtitles. The accuracy of subtitle adjustment in a video can be improved byapplying the embodiment of the present disclosure.

Reference intervals are established and/or validated based on existing clinical data and exclusion criteria, such as diagnosis coding. A Reference Interval Test Engine is designed to statistically analyze large volumes of existing clinical lab test results to establish and evaluate reference intervals for specific population subgroups and/or to provide other applications.

An arrangement for determining a gradient factor for a digitally controlled oscillator has a data alignment device and an identification device. The data alignment device can be supplied a modulation signal, a phase error signal and an oscillator control word. The data alignment device is configured to output a modulation setting word based on the modulation signal, output a time interval magnitude based on the phase error signal and a reference interval, and output an oscillator modulation word based on the oscillator control word. The identification device is configured to adapt and output the gradient factor based on the modulation setting word, the time interval magnitude and the oscillator modulation word.

In a method of selecting one or more transponders, the time duration of a reference interval is transmitted by the base station to the transponders in the header section of an information packet, each transponder compares the respective time durations of the reference interval and of a first time interval, and the further selection of the transponder depends on the result of the comparison.

The invention discloses a design method for a grid electrode with a gradually changed width. The design method comprises the following steps: establishing a mathematical physical model for total relative power loss generated during the process of collecting current carriers of the grid electrode according to parameters of a to-be-designed solar battery; presetting a maximum value, a minimum value and a reference interval of the parameters; combining the given parameters and calculating the total relative power loss corresponding to each combination according to the mathematical physical model; and searching for the minimum value of the total relative power loss and the corresponding parameter combination, wherein the parameter combination corresponding to the minimum value is the optimal grid electrode structure of the solar battery. The design method provided by the invention is less in calculated amount, is simple and practical and is accurate in result.

The invention provides a discharge dose accurate control method and device applied to a cardiac defibrillator. The defibrillator automatically sets the minimum electric energy required by defibrillating discharge according to the magnitude of sensed thoracic impedance. The amplitude reference interval value and the normal phase and reverse phase sawtooth wave total number of a dual phase sawtooth pulse discharge waveform are calculated. According to a preset H bridge switch control policy, the electric energy in an energy storage capacitor is used to carry out fast high voltage electric defibrillating on a patient in the form of dual phase sawtooth wave pulse. According to the invention, based on thoracic impedance sensing of the patient and individually customized dual phase sawtooth pulse discharge, defibrillating discharge current which is superposed on a dual phase rectangular wave and is in the form of a sawtooth fine wave is provided for heart in a ventricular fibrillation state; by controlling the normal phase and reverse phase sawtooth wave number, the patient discharge dose is accurately and flexibly controlled, which is conducive to improving the defibrillating discharge individual pertinence and the success rate of once defibrillating; and by reducing the high voltage amplitude, myocardial damage in a defibrillating process is effectively reduced.

An image generating method is provided. The method includes performing a rearrangement process and an interpolation process on fan beam projection data, the fan beam projection data acquired by a scan that includes rotating a radiation source and a detector having a plurality of detecting elements arranged in a channel direction, wherein the interpolation process generates equally-spaced parallel beam projection data in which channel-direction intervals are equal therebetween, and wherein the interpolation process is performed with respect to a plurality of view directions. The method further includes performing a back-projection process on the equally-spaced parallel beam projection data to thereby reconstruct an image, wherein the channel-direction intervals between the equally-spaced parallel beam projection data are smaller than a reference interval obtained by dividing an interval between the detecting elements in the channel direction by a projection enlargement rate.

The invention discloses an application of a complexing agent in improvement of soil enzymatic activity of festuca arudinaces. The complexing agent is ethylene diamine tetraacetic acid, nitrilotriacetic acid or diethyl triamine tetraacetic acid; and the concentration of the complexing agent is 3-5mmol.kg<-1>. The experiment result shows that ethylene diamine tetraacetic acid (EDTA), nitrilotriacetic acid (NTA) and diethyl triamine tetraacetic acid (DTPA) are applied to the repair of heavy metal in soil to affect the biological environment of the soil, so as to affect the conversion of soil nutrients to affect the growth of a plant. Therefore, the health condition of the soil is evaluated when the heavy metal content in the soil is reduced; as the analysis, the method can be used as a proper reference concentration interval for the application of the EDTA when the concentration of the EDTA is smaller than 10mmol.kg<-1>; and a reference interval of the NTA is the same as that of the EDTA. As to the DTPA, the dosage can be considered to be 5mmok.kg<-1> when the economic cost and the remediation effect are synthesized.