224 results about "High signal intensity" patented technology

A processor provides signal quality based limits to a signal strength operating region of a pulse oximeter. These limits are superimposed on the typical gain dependent signal strength limits. If a sensor signal appears physiologically generated, the pulse oximeter is allowed to operate with minimal signal strength, maximizing low perfusion performance. If a sensor signal is potentially due to a signal induced by a dislodged sensor, signal strength requirements are raised. Thus, signal quality limitations enhance probe off detection without significantly impacting low perfusion performance. One signal quality measure used is pulse rate density, which defines the percentage of time physiologically acceptable pulses are occurring. If the detected signal contains a significant percentage of unacceptable pulses, the minimum required signal strength is raised proportionately. Another signal quality measure used in conjunction with pulse rate density is energy ratio, computed as the percentage of total energy contained in the pulse rate fundamental and associated harmonics.

A system is disclosed for generating and transmitting data signals to the surface of the earth while drilling a borehole, the system operating by generating pressure pulses in the drilling fluid filling the drill string. The system is designed to maximize signal strength while minimizing the probability of jamming by drilling fluid particulates. The system uses a rotary valve modulator consisting of a stator with flow orifices through which drilling fluid flows, and a rotor which rotates with respect to the stator thereby opening and restricting flow through the orifices and thereby generating pressure pulses. The flow orifices with the stator in a "closed" position are configured to reduce jamming, and to simultaneously minimize flow area in order to maximize signal strength. This is accomplished by imparting a shear to the fluid flow through the modulator, and minimizing the aspect ratio and maximizing the minimum principal dimension of the closed flow area. A preferred embodiment and three alternate embodiments of the modulator are disclosed.

The invention discloses a method for automatic pairing to a wireless network. A software based method for establishing wireless connection between wireless devices and a host device automatically, through pairing and connection operations, includes the host device automatically scanning for detecting broadcast signals radiated by the wireless devices and accepting only the device types from a preauthorized list. The signal strengths for the accepted device types are measured automatically, and only those that are higher than a predefined level are saved. The device with the highest signal strength is identified automatically as a qualified device, for pairing. A passkey is automatically assigned to the qualified device, along with a pairing request and the pairing operation is established. Subsequently, the connection operation is automatically established between the qualified device after pairing and the host device. This method continues automatically, with the next qualified device until there is no saved information and with more scans until no broadcast signal is detected. The invention is used for the automatic pairing method to the wireless network without manual intervention.

The embodiment of the invention provides a sensor component and a terminal. The sensor component comprises a signal projector, a signal receiver and a blocking piece; the signal projector and the signal receiver are arranged at an interval; the blocking piece is arranged between the signal projector and the signal receiver; the signal projector is used for emitting a first signal and a second signal; the signal receiver is used for receiving a reflection signal formed after the first signal is reflected through an external object; and the blocking piece is used for blocking the second signal from entering the signal receiver. According to the technical scheme, as a diffraction signal is blocked from entering the signal receiver through the blocking piece in the sensor component, the influence on detection of the signal strength by the diffraction signal can be prevented, the accuracy of detecting the signal strength can be improved, and the sensitivity of the sensor component is improved.

A listening device and respective method for processing speech audio signals present in noisy acoustical sound waves captured from an adjacent environment for persons with normal hearing. The device comprises a housing for providing acoustical and mechanical coupling to a user's ear, the housing having a first portion for positioning in the ear and an elongated second portion extending from the first portion. The device also comprises a pair of spaced apart microphones positioned on a line-of-sight reference vector and supported by the housing, at least one of the microphones located in the elongated second portion of the housing, the microphones configured for capturing the acoustical sound waves from the environment including speech related elements and non-speech related elements. A digital signal processor is supported by the housing and is configured for digitally processing the captured acoustical sound waves to identify and select the speech related elements propagating towards the second portion in the vicinity of along the line of sight vector and for enhancing the signal strength of the selected speech related elements with respect to other of the elements in the captured acoustical sound waves to generate a processed acoustical digital signal. A receiver located in the first portion is used for converting the processed acoustical digital signals into processed analog acoustical signals and for transmitting the processed analog acoustical signals into the user's ear.

A method and apparatus for managing resources for Peer-to-Peer (P2P) communication in a wireless communication system. A mobile station (MS) attempting to establish P2P communication receives a P2P amble signal transmitted on at least one adjacent P2P link, measures a signal strength for the P2P amble signal, reports the measurement results to a base station (BS), and performs the P2P communication using a P2P resource that is assigned by the ES according to the measurement results. The ES assigns a resource different from the resource assigned to a P2P link having a highest signal strength measured, as a resource for the P2P communication, thereby preventing possible interference caused by adjacent P2P links.

A mobile telemedicine unit having a high gain antenna, and mobile modem with a web or client based feature to run over variable bandwidths to connect, stay connected, or auto-reconnect a telemedicine session through a hosted or cloud-based solution. The unit is lightweight, is self-contained with a power source and a wireless signal, and is able to be carried directly to a patient's location or permanently wired in an ambulance. The modem also includes multiple cellular carriers' subscriber identity module cards to improve signal strength. The unit has at least one camera and/or medical diagnostic device that is operated by a medical professional in the patient's presence. This is streamed live over a cellular or satellite signal to a healthcare provider who is able to see, interview and potentially diagnose the patient in real time, remotely.

The invention discloses a base station planning point automatic selection method. The method comprises the core steps that cell information of macro base stations is acquired, and a set A is obtained; the maximum value and the minimum value of cell longitudes and latitudes in the set A are calculated, and the maximum value and the minimum value are rounded according to the step length; the longitudes and the latitudes are segmented according to the step length from the minimum value to the maximum value; according to pairing of the longitudes and the latitudes, a set B is obtained; the attributes of the set B are initialized; grid ground feature information of the set B is acquired; an MR level value is acquired; the signal intensity of each grid in the set B is calculated, and the first three cells with the first three high signal intensities are obtained; the carrier-to-interference ratio of the grids in the set B are calculated; the attribute MR level values of the grids in the set B are calculated; the grids with the attribute MR level values smaller than a threshold value Xa and the carrier-to-interference ratios smaller than a threshold value Xb are searched for in the set B, and a poor coverage set D is obtained; aggregation processing is carried out on the grids of the set D, and the grids with the distances smaller than a threshold value are arranged in one set, so that a grid group set E is obtained; the center coordinates of the grid groups of the grid group set E are calculated, and a planning point coordinate set F is obtained.

A magnetic resonance imaging apparatus includes an acquisition unit which acquires first data in which a tissue of interest has higher signal intensity than a background and second data in which the tissue of interest has lower signal intensity than the background, with regard to images of the same region of the same subject, and a generation unit which generates, on the basis of the first data and the second data, third data in which the contrast of the tissue of interest to the background is higher than those in the first and second data.

The method of stirring a solution according to the present invention is a method of stirring a solution comprising contacting a selective binding substance immobilized on the surface of a carrier with a solution containing an analyte substance reactive with the selective binding substance, and mixing the fine particles or air bubbles into the solution containing an analyte substance, and moving the fine particles or air bubbles without allowing contact thereof with the selective binding substance-immobilized surface. The present invention provides a stirring method that accelerates the reaction of a carrier-immobilized selective binding substance with an analyte substance and detects a trace amount of analyte at high signal intensity and high S/N ratio. The present invention enables diagnosis and examination in the clinical setting by using a selective binding substance-immobilized carrier such as DNA chip.

A slider includes a Tunneling Magneto-Resistive (TuMR) read sensor and a shunt resistor connected in parallel. The shunt resistor may be located in a read structure of the slider. The shunt resistor may reduce a total resistance of the read structure and any corresponding impedance mismatch between the read structure, a transmission line, and a preamplifier. The shunt resistor may be made of a material having a near zero thermal coefficient of resistivity (TCR) to test a quality of the TuMR read sensor. The TuMR read sensor may be deemed defective if its TCR deviates from a population average by a specific criterion. The TuMR read sensor may include a MgO tunneling barrier to improve signal strength. The TuMR read sensor may include a free layer that is able to be saturated with a perpendicular background field to calculate a more accurate TCR of the TuMR read sensor.

In a magnetic resonance angiography method with flow-compensated and flow-sensitive imaging and a magnetic resonance apparatus for implementing such a method, a first MR data set of the examination region is acquired with an imaging sequence in which vessels in the examination region are shown with high signal intensity, a second MR data set of the examination region with an imaging sequence in which the vessels in the examination region are shown with low signal intensity, and the angiographic magnetic resonance image is calculated in a processor by taking the difference of the first and second data set. The first data set is acquired with an imaging sequence with reduced flow sensitivity and the second data set is acquired with an imaging sequence with an increased flow sensitivity compared to the initial imaging sequence.

A perpendicularly-crossed positioning algorithm of a wireless sensor network is used in a wireless sensor network of limited power and random distribution. The algorithm is on the premise of a mobile beacon with known self position, wherein the mobile beacon keeps broadcasting signal and current self position on a movement path line; a node records a point of highest signal intensity through comparing signal intensity, and calculates the position of the node by a geometry method according to the two points of highest signal intensity obtained from every two adjacent sides. The perpendicularly-crossed positioning algorithm requests that the path lines of the mobile beacon are two sides of an equilateral triangle and that the side length of the triangle is equal to the transmission radius R of the mobile beacon. The algorithm can accurately calculate the position of the node through using just one mobile beacon, thereby improving system extensibility and usability and reducing hardware requirement to save cost.

The invention provides an NFC method for terminal equipment. The terminal equipment is provided with a pairing area. The NFC method includes the following steps of starting the NFC function; searching for surrounding paring equipment with NFC labels; obtaining the name and signal intensity of the pairing equipment; sorting the names of the pairing equipment from the high signal intensity to the low signal intensity; generating and displaying an equipment list; when it is detected that a current interface includes the pairing area and the equipment list and a first trigger signal is received, detecting the name of the equipment, corresponding to the trigger position of the first trigger signal, in the equipment list, and moving an icon corresponding to the name to the pairing area; sending a pairing instruction to the triggered pairing equipment automatically, and when the triggered pairing equipment is the same as the current terminal equipment in preset password, building NFC connection. By the adoption of the method, user experience is improved and interaction between a terminal and users is more flexible. Meanwhile, the invention provides the terminal equipment.

Superparamagnetic nanoscale particles are disclosed which are useful for providing a contrast agent with high signal intensity, high relaxivity and high intrinsic magnetism. The disclosed contrast agents will have utility and magnetic resonance imaging (MRI) and associated techniques.

The invention is an interface device and system for establishing an operating interface between an injector device and diagnostic imaging equipment. In one embodiment, the interface device may permit an operator to concurrently operate and control the injector device and the imaging equipment. The interface device may permit the injector system and the imaging system to communicate information regarding their current and future operational status with each other. The interface device may be used to synchronize the operation of the imaging equipment and the injector device. In one embodiment, the injector device and the imaging equipment may be able to communicate with each other directly or through the interface device via a communications protocol comprising binary logic signals. The binary logic signals may comprise one or more of a low strength signal, a high strength signal, an oscillating signal that oscillates between low and high signal strength, and combinations thereof.

Systems and methods for connecting a mobile device to an alternate wireless network are disclosed. The method includes determining alternate wireless networks available to access by the mobile device, ordering the available alternate wireless networks by signal strength, connecting the mobile device to the alternate wireless network with a highest signal strength, measuring a quality of the connected alternate wireless network and, when the quality of the connected alternate wireless network is above a predetermined threshold, operating the mobile device over the connected alternate wireless network.

The invention discloses an indoor intelligent control system and method based on voice recognition. The system comprises a voice signal collection device, a voice signal screening device, a voice characteristic analyzer and a control signal sender, wherein the voice signal collection device collects voice signals emitted by people indoor in real time via N voice signal collectors placed indoor; the voice signal screening device screens a voice signal of the highest signal intensity and uses the screened voice signal as a voice signal to be analyzed; the voice characteristic analyzer analyzes the voice characteristic of the voice signal to be analyzed and converts the voice characteristic into corresponding character information; and after that a character type recognizer determines the character information to be control type character information, the control signal sender generates a corresponding equipment control signal, and transmits the equipment control signal to corresponding intelligent household equipment, and the intelligent household equipment is controlled to enter the corresponding work mode. According to the system and method, people can carry out voice control on indoor electrical equipment on the premise that no handheld intelligent terminals are used, and the household intelligent level is improved.

A mobile device, such as a smartphone or a laptop, connects to a network based on the available bandwidth (throughput) of the network rather than on signal strength. The device may send a request containing the device's location to a service provider who has data on networks in the device's location and specifically on bandwidth or pipe performance. This data is used to determine which network in the area would be best to connect to. The network may be a network that does not necessarily have the highest signal strength (often shown as bars on a handset device). The service provider can cause the device to transition to the network having the higher bandwidth. It can also direct the user so that blackout areas are avoided using the network data maintained by the provider. The provider uses testers to obtain current bandwidth data of networks.

A mold is provide which, by using nano-imprinting, enables inexpensive provision of a magnetic recording medium capable of providing signals with a high signal intensity and enabling a high S/N. The method of the mold used in nano-imprinting includes: a transfer process of pressing a parent mold, having a relief pattern, against a resist layer formed on the surface of a substrate, and then releasing the parent mold to transfer the relief pattern to the resist layer; and a relief pattern formation process of exposing a lower substrate in depression portions of the resist in which the relief pattern has been formed by the transfer process, and etching the exposed substrate to form a relief pattern in the substrate, wherein in the relief pattern formation process, side etching of the substrate is performed during substrate etching.

A radio frequency identification (RFID) tag reading system and method accurately and rapidly determine, in real-time, true bearings of RFID tags associated with items in a controlled area. Primary transmit and receive beams are steered over the area, and multiple secondary receive beams are substantially simultaneously steered to a plurality of bearings in the area. The highest signal strength of secondary receive signals from the secondary receive beams determines an approximate tag bearing of each tag. Two secondary receive beams at opposite sides of the approximate tag bearing in elevation are selected to obtain a pair of elevation offset signals, and two secondary receive beams at opposite sides of the approximate tag bearing in azimuth are selected to obtain a pair of azimuth offset signals. The elevation offset signals and the azimuth offset signals are processed to determine a true bearing for each tag in real-time.

The invention provides a method and a device for scanning wireless local area network (LAN) channels; a wireless access point (AP) is used for recording the channels of message detected by initial reporting period, and the following steps are carried out within the subsequent reporting periods: if the recorded channels exist within the current reporting period, the AP can be used for scanning therecorded channels within the previous N periods of time and scanning the channels which are not recorded within the rest periods of time, wherein N is natural number; if the recorded channels do not exist, all the channels are scanned within each period of time; and the channels of the message detected by current reporting period are added into the record, and the scanning result is reported. Theinvention can improve the speed and the sensitivity of signal intensity detection.

The invention provides an asymmetric wireless router and a control method thereof. The router comprises a router body and more than one omnidirectional antenna which is arranged on the router body. The asymmetric wireless router is characterized in that the wireless router at least additionally comprises a rotating motor which is arranged in the router body and a turntable which is arranged on the router body, the turntable is mechanically connected with the rotating motor, more than one directional antenna is arranged on the turntable and the directional antenna can rotate with the turntable to any angle. The asymmetric wireless router and the control method thereof have the advantages that the signal strength can be effectively improved, the signal receiving capacity of the wireless router is improved and the problem of poor wireless signal receiving capacity of the existing wireless router is solved.