32results about How to "Measurement quality" patented technology

In assessing the capability of an IP based network to support toll telephony service, objective measurements of Speech Quality are taken. A module is used with Voice over Packet equipment that allows performance of voice quality measurements in real-time without using any external test equipment. A reference signal that includes a marker and a voice test signal is sent through the network from one Voice over Packet equipment containing or connected to the module to another. The received marker is compared to the reference marker to identify the onset time of the received voice test signal. The received and reference voice test signals are processed to measure the quality of the network. This may be implemented using the processing power and memory resources present in Voice over Packet equipment giving the network administrator an enhanced test capability at each node of the network. Voice quality measurements may be generated in a transparent way for the callers in real-time under severely degraded conditions of the network.

A method, system, and computer program product for determining relative quality of search engine indexes and search results include performing a two-level random walk through a hypertext-linked document set. Search engine index quality is measured based on the number of encountered documents that are indexed by the search engine index. Search result quality is measured based on the number and quality of documents that link to the result document.

Techniques are disclosed for sound source localization based on joint learning and evaluation of ITD and ILD representations that are measured in a complementary, correlation-based way using binaural time-frequency spectrums. According to one embodiment, from these measurements and learned representatives, which may, for example, be created by combinations of measurements from signals belonging to the same class, i.e., the same azimuthal location, probability distributions over frequency and class are computed. These probability distributions can be combined over cue and frequency using information-theoretic approaches to get a robust classification of the location and additionally a confidence measure for the quality of the classification result.

A method, computer program product, and apparatus for reconstructing sessions on a network are described. The method allows for monitoring of quality of service at an application level as well as for understanding application specific events. This allows the method to be used to generate service detail records for usage based on application type for use in billing. It also allows the qualitative and quantitative analysis of quality of service based on application specific parameters. For example, for voice over IP calls, application events like adding participants and removing participants can be detected and billed accordingly. Also, the quality of service can be measured. For example, the actual latency can be compared to a predetermined latency amount set by a provider for voice over IP calls. Additionally, service detail records can be generated based on application specific events instead of generic flows, so usage billing can be performed based on factors such as a price per minute per leg, etc, with application specific events generated each time a leg is added or dropped.

The invention is concerned with the transmission of streaming scalable data, particularly video data, through lossy communication channels, for applications in which limited retransmission is possible, and the associated reception and decoding of transmitted data. The PET (Priority Encoding Transmission) framework is used and the invention exploits both unequal error protection and limited retransmission. Each element in the scalable representation of each frame can be transmitted in one or both of two transmission slots, depending on the availability of the data received from the first of the two transmission slots. An optimization algorithm determines the level of protection which should be assigned to each element in each slot, subject to transmission bandwidth constraints. To balance the protection assigned to elements which are being transmitted for the first time with those which are being retransmitted, the proposed algorithm in preferred embodiments formulates a collection of hypotheses concerning its own behavior in future transmission slots.

Sensor components deployed in a container and acting as resistors or capacitors are used to determine liquid level independent of liquid quality. Displacement current can also be considered as the conduction current to accurately measure liquid quality and level. As the level of liquid increases, the displacement current and conduction current increases, which in turn causes a large change in output for a small change in liquid level. The change in displacement and conduction current values due to contamination of the liquid can be taken in to account with the help of auxiliary electrodes. The contaminated liquid level can be measured very accurately by current flowing through primary electrodes along with the use of auxiliary electrodes for auxiliary measurement, resulting in enhanced sensor system sensitivity and accuracy. System liquid level accuracy is independent of liquid quality and measures liquid quality accurately with resistance, displacement current, conduction current and capacitive measurement.

A screen motion image quality measuring / evaluating apparatus according to the present invention comprises: a rotatable mirror 2; a camera 3 for capturing a screen through the mirror 2; and a control unit 6. The control unit 6 is arranged to control such that when it is detected based on a change in the luminance of a screen 5 that a test pattern contained in a motion image displayed on the screen 5 has passed a predetermined position of the screen 5, a trigger for rotation is given to the mirror 2, and such that after the start of rotation of the mirror 2, the mirror 2 rotates as keeping pace with the movement of the test pattern. Without electric synchronism of rotation with a motion image signal, a trigger for rotation can be given to the mirror 2. Thus, the quality of a motion image on the screen can be measured with a simple structure.

Method and sensor arrangement for determining a load vector acting on a rolling element bearing (1) in operation. A plurality of N sensors (8) are provided which measure displacement and / or strain for determining displacement and / or strain in one of the elements (5, 6, 7) of the rolling element bearing (1). Furthermore, a mode shape coefficients calculator (11) is provided, connected to the plurality of N sensors (8), for determining a deformation of the element (5, 6, 7) by calculating amplitude and phase of N / 2 Fourier terms representing at least one radial mode shape of the ring shape element (5, 6, 7). Also, a bearing neural network (12) is present, connected to the mode shape coefficients calculator (11), the bearing neural network (12) being trained to provide the load vector on the rolling element bearing (1) from the N / 2 Fourier terms.

The size of measuring boxes for hearing apparatuses and in particular for hearing devices is to be reduced, with the efficiency of the measuring box in respect of attenuating interference noises being maintained or improved. A measuring box is thus proposed, which comprises an interference signal recording facility for recording an interference signal. Furthermore, provision is made in the measuring box for a signal generating facility to generate a compensation signal which is phase-opposed to the recorded interference signal, so that the interference signal can be compensated for by the compensation signal. The interference noise attenuation is thus achieved here by an electronic active part, so that the quality demands on the measurement space can be reduced and its size thereby decreased as well.

Present invention refers to a method and a system for intelligent routing of an incoming call over a dual telecommunication network supporting both CS and PS connections, comprising: initiating, from a call router server, a CS call establishment connection; at roughly the same time, sending, a push message over the PS connection to a callee's mobile device; as result of receiving the push message, registering said callee's mobile device into the call router server; providing the call router server with a measure of quality of a PS connection; and in the event of receiving, at the call router server, an unreachable notification from the CS connection and the measure of quality is higher than a pre-established minimum value, routing the incoming call through the PS connection.

A measuring system of distribution quality of a video image includes a distribution server, an receiving terminal, an upstream side reception time data generating section, a downstream side reception time data generating section and a quality data measuring section. The distribution server is provided in a center to transmit packets for a video image through a network, and the receiving terminal is provided in a user home to receive the packets transmitted through the network from the distribution server. The upstream side reception time data generating section is provided in the center to generate an upstream side reception time data indicating a time when the distribution server transmits one of the packets. The downstream side reception time data generating section is provided for the user home to generate a downstream side reception time data indicating a time when the receiving terminal receives the packet. The quality data measuring section is provided for one of the center and the user home, to measure a distribution quality indicating a distribution state from the distribution server to the receiving terminal based on the upstream side reception time data and the downstream side reception time data.

The invention is concerned with the transmission of streaming scalable data, particularly video data, through lossy communication channels, for applications in which limited retransmission is possible, and the associated reception and decoding of transmitted data. The PET (Priority Encoding Transmission) framework is used and the invention exploits both unequal error protection and limited retransmission. Each element in the scalable representation of each frame can be transmitted in one or both of two transmission slots, depending on the availability of the data received from the first of the two transmission slots. An optimization algorithm determines the level of protection which should be assigned to each element in each slot, subject to transmission bandwidth constraints. To balance the protection assigned to elements which are being transmitted for the first time with those which are being retransmitted, the proposed algorithm in preferred embodiments formulates a collection of hypotheses concerning its own behavior in future transmission slots.

Methods are described that are used to identify quality problems in a wireless communication network as experienced by a user-session of a mobile computing device, and quantify the quality of network transmission associated with the user-session. The quality of transmission during a user-session can then be used to characterize the network quality as experienced by an end user. One benefit of applying the described methods is that the actual quality of network transmissions experienced in a user-session is quantified rather than being inferred from the performance of a radio access network (“RAN”) transceiver. The described methods are used in some examples to determine network quality issues related to user-session characteristics, such as location and mobile computing device type.

An aspect of the present invention provides a method for sensing a quality of a mobility link by a system for sensing a quality of a mobility link configured for evaluating a quality of a transmission-attempting link connected with a transmission-attempting node: computing link quality metric values of RSSI, LQI and EXT from transmission packets included in the message; computing a distribution ratio of a fuzzy set corresponding to each of the link quality metric values by applying the computed quality metric values to a quality fuzzy set having their respective quality factor indicators configured therein; computing fuzzy estimator values by classifying and aggregating the computed fuzzy distribution ratio of the quality fuzzy set into a first, a second and a third quality; and evaluating a quality of the transmission-attempting link based on the fuzzy estimator values.

An ultrasound device comprises a transducer arrangement and an acoustically transmissive window over said arrangement, said window comprising an elastomer layer having conductive particles dispersed in the elastomer, the elastomer layer having a pressure-sensitive conductivity. An electroactive material actuator is provided for biasing the transducer arrangement towards the transmissive window. The electroactive material actuator is controlled in dependence on a measured pressure-sensitive conductivity. In this way, a feedback system is provided for controlling a contact pressure. The device can be implemented with low cost and with low power consumption.

The size of measuring boxes for hearing apparatuses and in particular for hearing devices is to be reduced, with the efficiency of the measuring box in respect of attenuating interference noises being maintained or improved. A measuring box is thus proposed, which comprises an interference signal recording facility for recording an interference signal. Furthermore, provision is made in the measuring box for a signal generating facility to generate a compensation signal which is phase-opposed to the recorded interference signal, so that the interference signal can be compensated for by the compensation signal. The interference noise attenuation is thus achieved here by an electronic active part, so that the quality demands on the measurement space can be reduced and its size thereby decreased as well.

The invention discloses a real-time monitoring feed box, and belongs to the technical field of storage machines. The feed box comprises a vertical barrel, a round feed box upper cover, multiple supporting foot bases, a first exhaust assembly and weighing sensors. The upper portion and the lower portion of the barrel are a cylinder and a cone correspondingly, openings are formed in the upper end and the lower end of the barrel correspondingly, the feed box upper cover is arranged on the opening in the upper end of the barrel, the supporting foot bases are evenly arranged on the outer surface ofthe cylinder, and the surface of the lower end of each supporting foot base is provided with the corresponding weighing sensor. According to the technical scheme, the feed box has the beneficial effects that through symmetric exhaust assemblies, particle pollutants in the feed box can be effectively prevented from being spread to the outer air, the multiple weight sensors are arranged outside thefeed box, the mass of the materials in the feed box can be measured in real time, and precise discharging of the materials can be achieved; and precise control over the material amount in the feed box can be achieved through an electrostatic capacity level indicator and an ultrasonic liquid level sensor.

Disclosed is a radio terminal including: a message transmitter-receiver configured to transmit and receive an IEEE 802.21 message using a protocol of a layer lower than an IP layer to and from a target radio base station for handover before an IP address acquisition unit acquires a new IP address; and a quality measurement unit configured to measure a radio communication quality including at least one of transmission delay and jitter in a radio communication path between the radio terminal and the target radio base station by using the IEEE 802.21 message transmitted and received by the message transmitter-receiver.

A snow quality measuring apparatus according to one aspect of the present invention includes a plurality of reflectors, at least one transmitter, at least one receiver, and a measuring device. The plurality of reflectors are respectively arranged at a plurality of prescribed heights above the ground. The transmitter emits radio waves towards the plurality of reflectors, and the receiver receives the reflected waves of the radio waves from the plurality of reflectors. The measuring device measures snow quality of snow on the ground at the prescribed plurality of heights based on the respective reflected waves to from the plurality of reflectors as received by the receiver.

The invention relates to a foaming agent stability detection device and a fading barrel. The fading barrel comprises a barrel body and a screening assembly; the barrel body is provided with an accommodating cavity, and a feed port and a liquid outlet which are communicated with the accommodating cavity; the screening assembly is arranged in the accommodating cavity and arranged between the feed port and the liquid outlet; the screening assembly comprises at least two oppositely-arranged screening pieces, and the screening pieces are provided with screening holes used for screening foam. The screening assembly comprises at least two screening pieces which are oppositely arranged; each screening piece is provided with screening holes used for screening foam, and therefore, foam can be prevented from penetrating through the screening pieces and being mixed in precipitation liquid to flow out as much as possible. It is guaranteed that all the foam flowing out of the liquid outlet are the precipitation liquid. The quality of the precipitation liquid can be accurately measured, the half-life period of the foam can be accurately detected, and then the stability of the foaming agent can beaccurately and reliably detected.

Equipment for measurement of the contribution to frequency stability by a generating unit, especially for generating units based on power electronics. This equipment is to be installed between a generating unit and an electric power system. It emulates an electric power system undergoing a power unbalance, which manifests itself through a grid frequency swing.

Disclosed is a method of measuring a video call quality of a mobile terminal, the method including establishing a video call between a transmitting terminal and a receiving terminal; modifying a video capture function provided from a terminal operating system (OS) and inserting a sequentially increasing index and timestamp into each video frame that is automatically acquired through a camera every time a video call application (app) of the transmitting terminal calls the video capture function; transmitting, by the transmitting terminal, the video frame to the receiving terminal; storing, by the receiving terminal, the video frame at a ratio higher than a frame per second (FPS) of the transmitting terminal; and extracting the index and the timestamp from the stored video frame through an optical character reader (OCR) text recognition and calculating a quality index.

Provided is a method of measuring quality of a video call between a transmitting terminal including processing circuitry and a receiving terminal, the method including processing, by the processing circuitry, original frames included in an original video based on a video call service; replacing, by the processing circuitry, real-time video frames acquired from a camera for a video call with a receiving terminal with at least a portion of the original frames; and transmitting, by the processing circuitry, the portion of the original frames to the receiving terminal as frames for the video call with the receiving terminal through the video call service.

A communications device includes a transmitter configured to transmit in one of plural segments of an available channel bandwidth signals representing data via a wireless access interface to a mobile communications network, a receiver configured to receive in one of the plural segments signals representing the data via the wireless access interface from the mobile communications network, and a controller configured to control the transmitter and the receiver. The controller is configured in combination with the transmitter and the receiver to measure a relative quality of signals received by the receiver in each of the plural segments, to transmit a measurement report to the mobile communications network, the measurement report including the measured relative quality of signals in each of the plural segments, and wherein, upon predetermined conditions being met, to skip the measuring of the relative quality of signals received in one or more of the plural segments.