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1899results about How to "Lower the threshold" patented technology
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Online simulations and network applications
InactiveUS20100174593A1Enhance interestEfficient preparationDiscounts/incentivesAdvertisementsApplication softwareNetwork application
Systems and methods are provided that involve a player to a significant degree with an advertisement and its accompanying product or service. One setting of the system and method may be a network application that is adjunct to an online simulation such as an MMO game. The system and method may be implemented in either or both, or in video games that are embodied in just one of these. The system and method provide a convenient way to tie advertising to game content. By use of advertisements, the user (through the player character) can become aware of and can access in-game items, player character attribute modifications, and rewards. Such advertisements may be banner advertisements or any other type of advertising. By taking advantage of the offers presented in the advertisements, a user of the network application may obtain items for their own use or for that of a corresponding MMO character.
Owner:DAYBREAK GAME COMPANY
Gaming machine having an enhanced game play scheme
InactiveUS20050130737A1Enhanced game play schemeIncrease gameplayApparatus for meter-controlled dispensingVideo gamesEngineeringGame play
A gaming machine having an enhanced game play scheme is provided where, in response to receipt of a second wager to select an option, a player is provided with enhanced game play. Enhanced game play may include (1) providing more frequent bonus game play, (2) providing a larger bonus game value payout, (3) providing more frequent bonus game play and providing a larger bonus game value payout, (4) providing a larger or multiplied game value payout, (5) providing a guaranteed value payout for a non-winning outcome, (6) providing game features (7) providing a larger game value payout based on a partial game outcome, (8) providing an extra wild symbol capable of repositioning, and (9) providing a possibility of an additional reel movement to reposition an extra reel symbol or (10) providing a possibility of an extra pay line to include an extra reel symbol to increase a value payout.
Owner:BALLY GAMING INC
Gaming machine having an enhanced game play scheme
InactiveUS20050130731A1Enhanced game play schemeIncrease gameplayApparatus for meter-controlled dispensingVideo gamesEngineeringGame play
A gaming machine having an enhanced game play scheme is provided where, in response to receipt of a second wager to select an option, a player is provided with enhanced game play. Enhanced game play may include (1) providing more frequent bonus game play, (2) providing a larger bonus game value payout, (3) providing more frequent bonus game play and providing a larger bonus game value payout, (4) providing a larger game value payout, (5) providing a guaranteed value payout for a non-winning outcome, (6) providing game features (7) providing a larger game value payout based on a partial game outcome, (8) providing an extra wild symbol capable of repositioning, and (9) providing a possibility of an additional reel movement to reposition an extra reel symbol or (10) providing a possibility of an extra pay line to include an extra reel symbol to increase a value payout.
Owner:BALLY GAMING INC
Spatial decimation stimulation in an implantable neural stimulator, such as a cochlear implant
ActiveUS7039466B1High rate stimulationReduce power levelElectrotherapyArtificial respirationCochlear implantationElectrode array
A cochlear implant system, or other neural stimulation system, has the capability to stimulate fast enough to induce stochastic neural firing so as to restore “spontaneous” neural activity. The stimulation rate applied to the more distally-located electrodes of an electrode array connected to the implant system is reduced from the stimulation rate applied to the more proximally-located electrodes. Thus, in the case of a cochlear implant system, the apically-located regions within the cochlea are stimulated at a reduced rate in order to conserve power. Pulse widths of the reduced-rate pulses may further be increased, and amplitudes reduced, to further conserve power. As needed, a low-level random conditioner stimulation signal may be applied to the apical regions of the cochlea in order to ensure the occurrence of random neural firings.
Owner:ADVANCED BIONICS AG
System and method for simulating an aerial image
ActiveUS20060048089A1Minimize the differenceEnsure correct executionPhotomechanical apparatusCharacter and pattern recognitionReference spaceSpatial image
A method for generating a simulated aerial image includes forming a reference aerial image of a first mask using an optical system, and capturing and processing the reference aerial image so as to generate a set of expansion functions representative of the optical system. The simulated aerial image of a second mask is then computed by applying the expansion functions to a design of the second mask.
Owner:APPL MATERIALS ISRAEL LTD
Mobile hard disk drive free fall detection and protection
ActiveUS7369345B1Reliable and quicker and precise to measureReliable, quicker and more precise way to measure free fallDisposition/mounting of recording headsDriving/moving recording headsFree fallingHard disc drive
A system provided for protecting a disk drive from impact damages. More specifically, a disk drive is provided that includes an accelerometer interconnected to a printed circuit board that detects free fall of the disk drive. In addition, the velocity of spinning disks of the disk drive is also monitored to assess changes in velocity thereof that may indicate the presence of a tumbling condition. Furthermore, the change in acceleration measured by the accelerometer is monitored to prevent false indications of free fall due to common vibrations. Thus an enhanced system is provided that protects disk drives from the effect of free falls under a wide variety of conditions and allowing for drops from shorter distances to be identified.
Owner:SEAGATE TECH LLC +1
Optical semiconductor device
InactiveUS6043515AEasy population inversionImprove featuresExcitation process/apparatusSolid-state devicesMagnetizationContact layer
An optical semiconductor device has a structure in which a semiconductor active layer is sandwiched by a p-type semiconductor cladding layer and an n-type semiconductor cladding layer and a p-type contact layer is formed on the p-type semiconductor cladding layer side and an n-type contact layer is formed on the n-type semiconductor cladding layer side, wherein two ferromagnetic layers are formed on the n-type contact layer and two ferromagnetic layers are formed on the p-type contact layer. Magnetization directions of a pair of ferromagnetic layers vertically opposed to each other are set to be parallel to each other, and the magnetization directions of adjacent ferromagnetic layers are inverted to each other.
Owner:KK TOSHIBA
Method and apparatus for multimodal electrical modulation of pain
ActiveUS20160271413A1Good pain reliefChronic painSpinal electrodesMagnetotherapyElectromagnetic fieldPeripheral neuron
Apparatus and methods for managing pain uses separate varying electromagnetic fields, with a variety of temporal and amplitude characteristics, which are applied to a particular neural structure to modulate glial and neuronal interactions as a mechanism for relieving chronic pain. In another embodiment, a single composite modulation / stimulation signal which has rhythmically varying characteristics is used to achieve the same results as separate varying electromagnetic fields. Also, disclosed is an apparatus and method for modulating the expression of genes involved in diverse pathways including inflammatory / immune system mediators, ion channels and neurotransmitters, in both the Spinal Cord (SC) and Dorsal Root Ganglion (DRG) where such expression modulation is caused by spinal cord stimulation or peripheral nerve stimulation using the disclosed apparatus and techniques. In one embodiment of multimodal modulation therapy, the prime signal may be monophasic, or biphasic, in which the polarity of the first phase of the biphasic prime signal may be either cathodic or anodic while the tonic signal may be either monophasic, or biphasic, with the polarity of the first phase of the biphasic tonic signal being either cathodic or anodic.
Owner:MEDTRONIC SG LLC
Direct3D 11-based 3D graphics rendering engine
ActiveCN106056661ALower the thresholdReduce development costs3D-image renderingHead-up displayGraphics
The invention discloses a Direct3D 11-based 3D graphics rendering engine, which comprises a master control module and a plurality of functional sub modules, wherein the functional sub modules comprise a matrix module, a view point module, a head-up display module, a multi-character set word module, a 3D primitive base class module, a poster board module, a mesh model module, a smoke and rain and snow particle system module, a halo special effect calculation module, and a soft shadow calculation module. According to the default rendering process for each frame, the soft shadow module is firstly called, and with the illumination direction as the view point, the depth information of each primitive in the rendering scene is calculated; then, with the sight line of eyes of an observer as the angle, each primitive in the scene is rendered to the surface, an original scene view is obtained, highlight information is obtained at the same time, and the actual lighting effects of each pixel point is obtained according to the depth information and the illumination calculation result; and finally, in combination with the first sum depth information and the highlight information, highlight aura special effect post-processing on the illumination is carried out on the original scene view, and the final single-frame rendering graph is obtained.
Owner:钱进 +3
Method for generating configuration for middleware protocol conversion of Internet of vehicles
ActiveCN104331292AAvoid interventionImprove stabilitySpecific program execution arrangementsError checkDBc
The invention discloses a method for generating configuration for middleware protocol conversion of the Internet of vehicles. According to the method, the rapid development of a protocol conversion module is realized through configuration, vehicle enterprise communication protocol conversion parameters are added into a configuration tool through reading DBC (DataBase Commander) file description information which is compiled according to the communication protocol of the Internet of vehicles, configuration information is stored in a database, and middleware protocol conversion module codes of the Internet of vehicles are automatically generated by using protocol conversion template files; a vehicle body network is rapidly integrated with other networks, so as to realize the communication of the Internet of vehicles; the configuration tool can automatically generate configuration files and an application framework and carries out error check on the configuration of a user, worker involvement is avoided as much as possible, and the error rate is lowered, so that the stability of the protocol conversion module can be actively improved.
Owner:CHONGQING UNIV OF POSTS & TELECOMM
Method and an apparatus for distance measurement
InactiveUS20050248749A1Cancel noiseClosely placedBeacon systemsDevices using optical meansAnalog signalElectromagnetic radiation
The invention relates to a method for distance measurement by determining the pulse transit time, in which pulsed electromagnetic radiation is transmitted using at least one transmitter and signal pulses reflected at objects are detected using at least one receiver, wherein at least one received logic signal containing logic signals is generated from the received analog signal containing the signal pulses, in particular by means of a threshold circuit, and is evaluated with respect to the transit times of the logic signals, and wherein the received logic signal is read into a programmable logic circuit by means of a clocked data reading device and is mapped onto a time pattern in the logic circuit, in that instantaneous values of the received logic signal are stored in logic units of the logic circuit associated with the time windows for time windows of the time pattern corresponding to at least one clock pulse of the data reading device. The invention moreover relates to an apparatus for distance measurement.
Owner:IBEO AUTOMOBILE SENSOR
Distributed system multilevel fault tolerance method under cloud environment
ActiveCN103778031AEasy to use interfaceLower the thresholdRedundant operation error correctionVirtualizationVirtual machine
Owner:HUAZHONG UNIV OF SCI & TECH
Motion-sensing follow-type flight control system and method
InactiveCN104020777AFlight precisionAchieve interactionToy aircraftsRemote-control toysMicrocontrollerGyroscope
The invention discloses a motion-sensing follow-type flight control system and method. The motion-sensing follow-type flight control system comprises a remote controller and an aircraft. The remote controller comprises a power supply system, an acceleration sensor, a digital-analog converter, a microcontroller and a radio transmission module. The aircraft comprises an information receiving module, an acceleration sensor, a gyroscope sensor, a barometer sensor, a data processing module and a control driving module. The remote controller obtains the acceleration magnitude of the hand through the acceleration sensor, collects motion data of the hand, and processes the motion data through the digital-analog converter. Then, the microcontroller calculates the acceleration change of the aircraft according to the acceleration change of the hand, and transmits a corresponding control instruction to the aircraft through the radio transmission module, so that the aircraft follows motions of the hand to cope and magnify the control motions guided by the hand, the aircraft is guided to fly in various corresponding flight paths by following the motions of the hand, and the immersive feeling is brought to an operator.
Owner:成都华诚智印科技有限公司
Surface-Emission Laser Diode and Fabrication Process Thereof
ActiveUS20080212636A1Large gainExcellent high-temperature characteristicOptical wave guidanceLaser detailsQuantum wellDistributed Bragg reflector
A surface-emission laser diode comprises a cavity region over a semiconductor substrate and includes an active layer containing at least one quantum well active layer producing a laser light and a barrier layer, a spacer layer is provided in the vicinity of the active layer and formed of at least one material, an upper and lower reflectors are provided at a top part and a bottom part of the cavity region, the cavity region and the upper and lower reflectors form a mesa structure over the semiconductor substrate, the upper and lower reflectors being formed of a semiconductor distributed Bragg reflector having a periodic change of refractive index and reflecting incident light by interference of optical waves, at least a part of the semiconductor distributed Bragg reflector is formed of a layer of small refractive index of AlxGa1-xAs (0<x≦1) and a layer of large refractive index of AlyGa1-yAs (0≦y<x≦1), the lower reflector is formed of a first lower reflector having a low-refractive index layer of AlAs and a second lower reflector formed on the first lower reflector, the second lower reflector has a low-refractive index layer of AlGaAs, any one layer constituting the cavity region contains In.
Owner:RICOH KK
Video studio creating method and service device
ActiveCN104394432AImplement automatic configurationSpeed up buildSelective content distributionWorkloadLive video
Owner:广州方硅信息技术有限公司
Light emitting diode and semiconductor laser
InactiveUS20030132449A1Desirable crystallinityImprove luminous efficiencyLaser detailsSolid-state devicesUltraviolet lightsSingle crystal substrate
An ultraviolet-light-emitting semiconductor diode comprising an n-type ZnO layer with luminous characteristics formed on a transparent substrate, and a p-type semiconductor layer selected from the group consisting of SrCu2O2, CuAlO2 and CuGaO2, which is formed on the n-type ZnO layer to provide a p-n junction therebetween. The transparent substrate is preferably a single crystal substrate having atomically flat yttria-stabilized zirconia (YSZ) (III) surface. The n-type ZnO layer is formed on the transparent substrate having a temperature of 200 to 1200° C., and the p-type semiconductor layer selected from the group of SrCu2O2, CuAlO2 and CuGaO2 is formed on the n-type ZnO layer. The n-type ZnO layer may be formed without heating the substrate, and then the surface of the ZnO layer may be irradiated with ultraviolet light to promote crystallization therein.
Owner:HOYA CORP
Testing device for simulation and real-time detection of erosion of thermal barrier coatings of turbine blades
ActiveCN103063534AEasy to realize included angleFast heating rateInvestigating abrasion/wear resistanceTest platformTopography
The invention discloses a testing device for simulation and real-time detection of erosion of thermal barrier coatings of turbine blades, belonging to the field of simulation devices in a special service environment. The testing device comprises an erosion particle feeding system, a test testing platform (1), a temperature test system, an acoustic emission nondestructive testing system, a control platform and the like. An erect fixed shaft (101) is arranged on the test testing platform (1) and is connected with a horizontal supporting shaft. The testing device can be used for simulating the erosion service environment in which hard particles in a high-performance aero-engine repeatedly impact thermal barrier coatings of turbine blades due to the driving of airflow. By controlling the parameters such as erosion speed, angle, size and the like of erosion particles, the process that the coatings are eroded by different hard particles in the service process is realized and the real-time test and analysis of data, such as the temperature, the surface topography evolution, the interfacial oxidation of a sample and the like can be synchronously realized. The device can provide an important test platform for effectively assessing the erosion failure process and the failure mechanism of coatings of turbine blades in the special service environment.
Owner:XIANGTAN UNIV
Method of controlling data flow for a media player system
InactiveUS20050147033A1Easy to useRaise the barPulse modulation television signal transmissionError preventionData controlData stream
A data control method used in a media player system is disclosed. The media player system includes a data end and a play end connected to each other through a network. The data end includes an encoder for encoding media data. The play end includes a buffer for storing media data packets. The method includes comparing the number of media data packets stored in the buffer with a high threshold and a low threshold, decelerating the encoding by the encoder of the data end if the number of media data packets stored in the buffer is larger than the high threshold, and accelerating the encoding by the encoder of the data end if the number of media data packets stored in the buffer is smaller than the high threshold.
Owner:BENQ CORP
Three-dimensional remote rendering system and method based on image transmission
InactiveCN1845177AEasy to viewImprove real-time performanceTransmission3D-image renderingDelayed MemoryClient-side
The invention discloses a three-dimension remote romance system, based on graph transmission, which comprises interactive server terminal and user terminal. Wherein, the server terminal has mode file manage unit, three-dimension romance engine unit, graph code decode compress unit, and network transmission unit; the user terminal has network transmission unit and user interactive unit; when the server terminal receives the browse request of user terminal via the network transmission unit, the mode file manage unit reads the mode file that requesting browse; using three-dimension romance engine unit to romance generate graph data, via the graph code decode compress unit to be compressed, and via network transmission unit, to be sent to the user terminal; user terminal decodes the data of compressed graph, to display it via user interface. The invention uses progressive transmission, multistage delay memory, and the prediction based on user interaction to realize the balance between high real-time property and high accurate browse, to support quick beautiful romance effect to general user.
Owner:ZHEJIANG UNIV
Flat panel X-ray imager with a grid structure
ActiveUS7256402B1High conductivityExtend useful lifeSolid-state devicesMaterial analysis by optical meansPolymerThermal expansion
A flat panel X-ray imager using an amorphous selenium detector which uses a polymer grid structure within the X-ray conversion layer to form an interface between the X-ray conversion layer and the pixel electrodes. The grid structure provides an additional physical barrier between pixel electrodes that reduces electrical bridging due to crystallization of the amorphous selenium due to temperature increases while also reducing the delamination temperature by providing a good anchor to the selenium, as well as a “cushion” for thermal expansion or contraction of the pixel electrodes. The grid can further include one or more grid electrodes for effecting avalanche-gain within the X-ray conversion layer while minimizing dark current entry into the selenium layer from the pixel electrode.
Owner:VIEWORKS +1
Hadoop parameter automatic optimization method and system based on performance pre-evaluation
InactiveCN103064664AImprove efficiencyLow costTransmissionSpecific program execution arrangementsStatistical analysisGenetic algorithm
The invention discloses a Hadoop parameter automatic optimization method based on performance pre-evaluation. The method comprises the following steps: statistically analyzing operational characteristics of an application run by a user on the Hadoop cluster to generate an output file; obtaining the output file and extracting from the output file of run time of various stages, processed and transmitted data, resources allocated for running the Hadoop application and a corresponding parameter configuration scheme of the Hadoop application, and according to the run time of various stages, the processed and transmitted data, the resources allocated for running the Hadoop application and the corresponding parameter configuration scheme of the Hadoop application in the output file, computing the total run time of the Hadoop application by utilizing MapReduce simulation technique; and according to the pre-evaluated performance of the Hadoop application under a current parameter configuration scheme and by utilizing the genetic algorithm, adjusting the corresponding parameter configuration scheme of the Hadoop application. The Hadoop parameter automatic optimization method based on performance pre-evaluation solves the problems of high cost, low efficiency, high threshold and capability of adding complexity of Hadoop codes in the existing method.
Owner:HUAZHONG UNIV OF SCI & TECH
Video processing method and device
ActiveCN104780439AImprove processing efficiencyEasy to operateSelective content distributionComputer graphics (images)Network packet
Owner:TENCENT TECH (SHENZHEN) CO LTD
Liquid Crystals Composition and Liquid Crystal Display with Patterned Electrodes
InactiveUS20110075074A1High light efficiencyProcess stabilityLiquid crystal compositionsThin material handlingCrystallographyDisplay device
A blue phase liquid crystal composition and a LC display using the composition. The liquid crystal composition includes a first class including a highly polar compound and a second class including a highly conjugated liquid crystal compound. The blue phase liquid crystal display device includes first and second substrates each with polarizer on the exterior surface and the blue phase liquid crystal composition sandwiched therebetween with and patterned electrodes on one of the substrates or both substrates. The patterned electrodes can be T-shaped, chevron or v-shaped, thin comb like shape and can also be flat or trapezoidal. The device outputs different light transmissions from the electrically controllable induced birefringence of the blue phase LC material for a low driving voltage, high transmittance blue phase liquid crystal display device.
Owner:UNIV OF CENT FLORIDA RES FOUND INC +1
Surface-emission laser diode and fabrication process thereof
ActiveUS7684458B2Large gainLower the thresholdOptical wave guidanceLaser detailsQuantum wellDistributed Bragg reflector
A surface-emission laser diode comprises a cavity region over a semiconductor substrate and includes an active layer containing at least one quantum well active layer producing a laser light and a barrier layer, a spacer layer is provided in the vicinity of the active layer and formed of at least one material, an upper and lower reflectors are provided at a top part and a bottom part of the cavity region, the cavity region and the upper and lower reflectors form a mesa structure over the semiconductor substrate, the upper and lower reflectors being formed of a semiconductor distributed Bragg reflector having a periodic change of refractive index and reflecting incident light by interference of optical waves, at least a part of the semiconductor distributed Bragg reflector is formed of a layer of small refractive index of AlxGa1-xAs (0<x≦1) and a layer of large refractive index of AlyGa1-yAs (0≦y<x≦1), the lower reflector is formed of a first lower reflector having a low-refractive index layer of AlAs and a second lower reflector formed on the first lower reflector, the second lower reflector has a low-refractive index layer of AlGaAs, any one layer constituting the cavity region contains In.
Owner:RICOH KK
Wideband access transmission network as assembly of electric power, telecommunication, Television and Internet
InactiveCN1209880CLower the thresholdEconomical and reliablePulse modulation television signal transmissionPower distribution line transmissionFiberModem device
Owner:王德清
System, method, and computer program product for tip sharing using social networking
A system, method, and computer program product for making a product recommendation that pays cash or non-cash awards to a network of tip sharers / providers. The system may be used to increase traffic to a business by sharing recommendations, which may include discounts or other exclusive offerings, to network connections that may be interested in buying a product or service, or engaging in any activity, of the business. A user of the system shares a tip or recommendation with their friend, this friend becomes a customer after making use of the tip, and a fee paid by the business is used to pay cash incentives to the individual who provided the tip and / or the customer who purchased the product based upon the tip. Additional embodiments are also described for sharing cash incentives with a greater network of individuals including those that invite others to join the tip sharing system.
Owner:OFFICER REISE +2
Detecting method of weak periodic signal based on chaotic system and wavelet threshold denoising
InactiveCN101881628AAdjustable frequencyImprove denoising effectMitigation of undesired influencesSignal-to-noise ratio (imaging)Decomposition
The invention discloses a detecting method of a weak periodic signal based on a chaotic system and wavelet threshold denoising, which comprises the following steps of: firstly carrying out wavelet decomposition on collected information, and determining a decomposition scale according to an actual signal-to-noise condition; denoising a wavelet high-frequency coefficient after the wavelet decomposition, wherein in the process of wavelet threshold denoising, the selection of a threshold is an important problem and directly influences a denoising result, so that the invention firstly provides a method for determining the threshold according to the scale for carrying out coefficient threshold processing to improve the denoising effect; reconstructing a signal after denoising, merging the signal to be detected after wavelet denoising reconstruction as one part of the driving force of the chaotic system into a chaotic detecting system, further inhabiting noise interference by utilizing the characteristics of the chaotic system for strong noise immunity, periodic weak signal sensitivity and the like, and effectively extracting the weak signal. The invention improves the detection threshold and the signal-to-noise ratio purely based on the chaotic detecting system.
Owner:CENT SOUTH UNIV
Method, system and device of creating and teaching painting on touch screen
InactiveCN103164158ALower the thresholdEasy to drawInput/output processes for data processingTeaching apparatusControl modeControl manner
Provided is a method of creating and teaching painting on a touch screen. The method of creating and teaching painting on the touch screen comprises a touch screen brush control manner and copy painting teaching. The touch screen brush control manner is a manner of controlling the thickness and the colors of brush lines. The touch screen brush manner utilizes a touch screen sensor, gathers a touching location, the size of the area of the touching location, the standing time of the touching location, and touching sliding speed, the degree of thickness and the concentration of the colors of lines which are drawn by the brush can be set through parameters. The initial degree of thickness and the concentration of the colors of the lines which are drawn by the brush are decided by the size of the area of the touching location and the standing time of the touching location, and the degree of thickness and the concentration of the colors of the lines are controlled by the parameter of the touching sliding speed when the brush which is touched and controlled starts to slide.
Owner:SHENZHEN CITY OURUOMAKE SCI & TECH CO LTD
Fire detection system and method using multiple sensors
ActiveUS7327247B2Shorten the timeShorten the overall cycleElectric signal transmission systemsSignalling system detailsMultiple sensorEngineering
Owner:HONEYWELL INT INC
Method for selecting preset value of image-guided ultrasonic diagnostic apparatus
ActiveCN101721227AEfficient use ofEasy to useUltrasonic/sonic/infrasonic diagnosticsInfrasonic diagnosticsImaging qualityWorkload
The invention discloses a method for selecting a preset value of an image-guided ultrasonic diagnostic apparatus. Information about general information of the preset value, a source preset value and modification parameters is automatically and associatively stored by fully utilizing important information about use habits of doctors, historical check images of patients and the like when the doctors store an image; and the information is visually displayed to the doctors through various user interfaces so as to rapidly acquire the preset value expected by the doctors under the guidance of the image information. The method greatly reduces the difficulty of adjusting the parameters of the preset value and the doorsill for the use of the ultrasonic diagnostic apparatus, reduces workloads of the doctors for manually adjusting the parameters, and enables less experienced doctors to rapidly adjust the optimized image quality suitable for the patients and visually learn the parameter adjusting experience from images adjusted by the experienced doctors so as to shorten own learning process.
Owner:CHISON MEDICAL TECH CO LTD
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