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78 results about "Video sender" patented technology
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A video sender (also known as a DigiSender, wireless video sender, AV sender or audio-video sender) is a device for transmitting domestic audio and video signals wirelessly from one location to another. It is most commonly used for sending the output of a source device, such as a satellite television decoder, to a television in another part of a property and provides an alternative to cable installations.
Video system, video transmitter, video receiver and control method for the same
InactiveUS20090113509A1Reduce hardware costsEliminate needTelevision system detailsTwo-way working systemsComputer hardwareControl signal
A video system with a bi-directional transmission function is provided. The video system includes an video transmitter, a transmission interface and a video receiver. The video transmitter is coupled to the video receiver via the transmission interface (coaxial cable). The video transmitter is used for inserting a first control signal into the video signal according a synchronous signal of the video signal. The video transmitter is used for outputting the video signal with the first control signal to the video receiver via the transmission interface. The video receiver receives the video signal with the first control signal, and gets the first control signal from the video signal according to the synchronous signal of the video signal. In addition, the video receiver can insert a second control signal into the video signal and feedback the second control signal to the video transmitter via the transmission interface.
Owner:AVTECH
Wireless operating room communication system including video output device and video display
A wireless operating room communication system provides wireless transmission of video signals from a wireless camera or a wireless transmitter unit to a portable wireless display unit. A wireless multiple device control unit is in wireless communication with the transmitter unit, the display unit, and a plurality of surgical devices disposed within the operating room. Each of the surgical devices has a video receiver to obtain a video signal to synchronize the devices and units. The video transmitter unit has a video transmitter and the other units or devices have a non-video transmitter. The arrangement enables transmission of device control signals on the same channel as the video signal. In response to changes in bandwidth, the video transmitter unit reduces the video signal to enable transmission thereof to the video display unit, while maintaining robustness of the control signals.
Owner:STRYKER CORP
Method and apparatus for digitally recording and synchronously retrieving a plurality of video signals
InactiveUS20050094966A1Firmly connectedSimple addressingTelevision system detailsPicture reproducers using cathode ray tubesDigital videoVideo sender
A method and apparatus for connecting a plurality of digital video recorders to a plurality of video transmitters via first transmission lines and for connecting the plurality of digital video recorders to a playback receiver via second transmission lines. The playback receiver incorporates an external synchronizing generator for externally synchronizing the plurality of the digital video recorders and the video transmitters. The recorders receiving the video signals generate and inject into the output signals a signal corresponding to identification codes allotted to each video signals. The playback receiver has a selection control circuit receiving selectively and synchronously any individually coded playback or monitored signal, or multiple playback or monitored signals which are displayed individually or in a split screen, respectively. The digital video recorder includes a time-date signal generator and a processing circuit compressing the video signals and outputting them with an injected identification code and time and date of the recorded signals and storing the signal into at least one memory device in an endless rotation, wherein freshly stored signals replace the oldest stored signals.
Owner:ELBEX VIDEO LTD
Video conference system based on Soft-MCU
InactiveCN101335869AImprove securityIncrease frame rateTelevision conference systemsTwo-way working systemsDigital videoMedia controls
A video conference system based on Soft-MCU includes a server, a video conference terminal BHU-ICT, a computer terminals and video communication system procedures, wherein, the video conference terminal BHU-ICT is composed by a digital video camera, a microphone, and an audio and video encoder. The digital video camera and the microphone are respectively connected to the audio and video encoder, the encoder, the server and the computer terminal are connected on the network, and the procedures are respectively running in the server and the computer terminal. The digital video camera and the microphone acquire the audio and video information of the meeting place, and use the encoder to execute hardware coding. A media control procedure runs on the computer terminal, and an MCU service procedure run on the server terminal, uses the Ethernet to exchange the audio and video information with the encoder, for performing audio and video communications. All of the texts, requests, commands and other information formats in the system control signaling system conform to the XML standard. The invention constructs a remote network video communications platform with high-quality, high stability and high security, which can be widely used in party and government organs and enterprises and institutions. The invention has advantages of reduced system cost, reduced travel costs, shortened decision cycles and enhanced work efficiency.
Owner:BEIHANG UNIV
Cable and line inspection mechanism
InactiveUS6512536B1Sure easyColor television detailsOptically investigating flaws/contaminationCamera lensDrive wheel
An automated cable and line inspection mechanism visually scans the entire surface of a cable as the mechanism travels along the cable=s length. The mechanism includes a drive system, a video camera, a mirror assembly for providing the camera with a 360 degree view of the cable, and a laser micrometer for measuring the cable=s diameter. The drive system includes an electric motor and a plurality of drive wheels and tension wheels for engaging the cable or line to be inspected, and driving the mechanism along the cable. The mirror assembly includes mirrors that are positioned to project multiple images of the cable on the camera lens, each of which is of a different portion of the cable. A data transceiver and a video transmitter are preferably employed for transmission of video images, data and commands between the mechanism and a remote control station.
Owner:NASA
Visual or multimedia interface bus switch with level-shifted ground and input protection against non-compliant transmission-minimized differential signaling (TMDS) transmitter
InactiveUS7259589B1Pulse automatic controlLogic circuits coupling/interface using field-effect transistorsDifferential signalingDigital Visual Interface
A bus switch chip is limited to operating with a power-supply voltage of 1.8 volts relative to a 0-volt ground. Differential bus signals switched through the bus switch chip swing from 2.7 to 3.3 volts, well above the chip's specified power-supply voltage. The bus switch chip is level-shifted by applying a 1.5-volt signal as the chip's ground, and a 3.3-volt signal as its power supply, so the chip's net power supply is within the specification at 1.8 volts. High-Definition Multimedia Interface (HDMI) and Digital Visual Interface (DVI) require that the differential signals are never driven to ground. However, some non-compliant video transmitters drive differential signals to ground when disabled. External pullup resistors or internal pullup transistors in the bus switch chip are added to the bus signals from non-compliant transmitters to pull disabled signals above the 1.5-volt chip ground to prevent damage from signals below the chip's 1.5-volt ground.
Owner:DIODES INC
Wireless operating room communication system including video output device and video display
A wireless operating room communication system provides wireless transmission of video signals from a wireless camera or a wireless transmitter unit to a portable wireless display unit. A wireless multiple device control unit is in wireless communication with the transmitter unit, the display unit, and a plurality of surgical devices disposed within the operating room. Each of the surgical devices has a video receiver to obtain a video signal to synchronize the devices and units. The video transmitter unit has a video transmitter and the other units or devices have a non-video transmitter. The arrangement enables transmission of device control signals on the same channel as the video signal. In response to changes in bandwidth, the video transmitter unit reduces the video signal to enable transmission thereof to the video display unit, while maintaining robustness of the control signals.
Owner:STRYKER CORP
Method and system for motion-compensated frame-rate up-conversion for both compressed and decompressed video bitstreams
ActiveUS20100046615A1Color television with pulse code modulationPulse modulation television signal transmissionVideo bitstreamComputer graphics (images)
A video receiver is operable to receive three-dimensional (3D) video bitstreams from a video transmitter. The received 3D video bitstreams comprises a plurality of video frames and corresponding coding information. The coding information, for example, block motion vectors, block coding modes, quantization levels, and / or quantized residual data, is extracted for performing frame-rate up-conversion on the received plurality of video frames. The coding information is generated at the video transmitter via entropy decoding on a compressed 3D video from a video feed from, for example, an IP TV network. When an uncompressed 3D video is received, the video receiver is operable to perform frame-rate up-conversion on the received uncompressed 3D video using extracted block motion vectors and associated confidence-consistence measure. When a compressed 3D video is received, the video receiver is configured to perform video decompression on the received compressed 3D video prior to the frame-rate up-conversion.
Owner:AVAGO TECH INT SALES PTE LTD
Method and apparatus for digitally recording and synchronously retrieving a plurality of video signals
InactiveUS7502546B2Firmly connectedSimple addressingTelevision system detailsPicture reproducers using cathode ray tubesDigital videoDigital recording
A method and apparatus for connecting a plurality of digital video recorders to a plurality of video transmitters via first transmission lines and for connecting the plurality of digital video recorders to a playback receiver via second transmission lines. The playback receiver incorporates an external synchronizing generator for externally synchronizing the plurality of the digital video recorders and the video transmitters. The recorders receiving the video signals generate and inject into the output signals a signal corresponding to identification codes allotted to each video signals. The playback receiver has a selection control circuit receiving selectively and synchronously any individually coded playback or monitored signal, or multiple playback or monitored signals which are displayed individually or in a split screen, respectively. The digital video recorder includes a time-date signal generator and a processing circuit compressing the video signals and outputting them with an injected identification code and time and date of the recorded signals and storing the signal into at least one memory device in an endless rotation, wherein freshly stored signals replace the oldest stored signals.
Owner:ELBEX VIDEO LTD
Method and system for motion-compensated frame-rate up-conversion for both compressed and decompressed video bitstreams
InactiveUS20100046623A1Color television with pulse code modulationColor television with bandwidth reductionVideo bitstreamMotion vector
A video receiver is operable to receive video bitstreams from a video transmitter over, for example, a wireless high definition transmission link. The received video bitstreams comprises a plurality of video frames and corresponding coding information. The coding information such as, for example, block motion vectors, block coding modes, quantization levels, and / or quantized residual data, is extracted for performing frame-rate up-conversion on the received plurality of video frames. The coding information is generated at the video transmitter via entropy decoding on a compressed video from a video feed from, for example, an IP TV network. When an uncompressed video is received, the video receiver is operable to perform frame-rate up-conversion on the received uncompressed video using extracted block motion vectors and associated confidence-consistence measure. When a compressed video is received, the video receiver is configured to perform video decompression on the received compressed video prior to the frame-rate up-conversion.
Owner:AVAGO TECH WIRELESS IP SINGAPORE PTE
Scalable video sender over multiple links
Disclosed are a system and method to efficiently send layered media, for example SVC encoded video, over parallel multiple wireless links (of one or more operator's networks) using a serving model, by prioritizing transmission of High Priority packets over Low Priority packets of the media. Furthermore, each High Priority packet may be fragmented into fragments equal or less than the number of wireless links. Each fragment may be sent over an available wireless link, and if it can't be sent, it is resent over another available link repeating the resending over different links until success or packet expiration. The Low priority Packets, however, are not fragmented, and if they can't be sent on an available link, discarded.
Owner:VIDYO
System and Method for Regulating Bandwidth in a Multicast Video Transmission System
Owner:VERTIV IT SYST INC
Systems and methods for objective video quality measurements
ActiveUS20050243910A1Picture framesPicture reproducers using cathode ray tubesVideo senderVideo quality
Disclosed herein are systems and methods for evaluating video quality. The systems include a video transmitter and a video receiver. The tranmitter generates feature parameters from a reference video to be transmitted and transmits the generated feature parameters along with compressed video data via a network. The video receiver receives the feature parameters and the compressed video data via the network, evaluates the video quality of the received video using the feature parameters and transmits video quality evaluation results to the video transmitter via the network.
Owner:SK TELECOM CO LTD +1
Using an auxilary channel for video monitor training
In a system having a bi-directional auxiliary channel arranged to transfer information between a video source and a video display and vice versa and a unidirectional main link arranged to carry a number multimedia data packets from the video source to the video display, a method of establishing a stable main link. The method is carried out by performing a link training session carried out over the auxiliary channel to establish the stable main link, prior to starting transmission of multimedia data packet streams from a video transmitter to a video receiver over the main channel.
Owner:GENESIS MICROCHIP
Method and apparatus for streaming video data
InactiveUS6950467B2Color television with pulse code modulationColor television with bandwidth reductionVideo senderRun-length encoding
A method of streaming video data includes providing a plurality of frames to be transmitted from a video transmitter system to a video receiver system. The plurality of frames are categorized into a reference frame and a prediction frame. The reference frame is encoded for transmission to the video receiver system using a zero run coding method. The encoded reference frame is transmitted to the video receiver system. The prediction frame is divided into a plurality of blocks. The plurality of blocks are examined to determine whether any of them needed to be transmitted to reproduce the prediction frame of acceptable quality at the video receiver system. Only the blocks that have been determined necessary to reproduce the prediction frame of acceptable quality at the video receiver system are transmitted to the video receiver system.
Owner:THIN MULTIMEDIA
High-speed mass data transfer system and implementation method thereof
ActiveCN101630974AIncrease transfer rateImprove the efficiency of single-point color correctionCathode-ray tube indicatorsElectromagnetic transmissionGraphic cardColor correction
The invention discloses a high-speed mass data transfer system and an implementation method thereof, aiming to solve the technical problem of improving the transmission speed of color correction data of a display screen and the efficiency of single-point color correction of the display screen. The system comprises a computer, a display card, a video receiver, a video transmitter and a display screen, wherein the display card is connected with the computer through a PCI bus; the display card and the computer are respectively connected with the video transmitter; the video transmitter is connected with the video receiver; and the video receiver is connected with the display screen. The implementation method comprises the following steps: data preparation, state conversion, data read-in, data transfer, data receiving, receiving conformation, judgment ending and state restoring. Compared with the prior art, the invention transmits mass point correction data into the video transmitter and the display screen by adopting a video data communication link with a bandwidth being higher than 1G, thereby greatly improving the transmission speed of the mass data and greatly improving the efficiency of the single-point color correction of the display screen.
Owner:深圳康显壹视界智能科技有限公司
Video sender and video receiver
ActiveUS20130329138A1Television system detailsColor signal processing circuitsComputer graphics (images)Video processing
According to one embodiment, a video sender comprises: a video processor and a communication module. The video processor creates video. The communication module is configured to communicate with a video receiver. The communication module comprises: a receiver and a transmitter. The receiver receives, from the video receiver, specific information specifying which one of a color signal and a frame rate takes precedence over the other one in transmission. The transmitter converts the video created by the video processor into video in which one of the color signal and the frame rate takes precedence over the other one in accordance with the specific information, and transmit the video thus converted to the video receiver.
Owner:HISENSE VISUAL TECH CO LTD
Method and system for repetition based adaptive video compression
InactiveUS20110310955A1Color television with pulse code modulationColor television with bandwidth reductionComputer hardwareTransmission latency
A video transmitter may perform adaptive video compression, by comparing uncompressed picture data for a picture among a sequence of pictures with uncompressed picture data for one or more preceding pictures among the sequence of pictures, to detect presence of repeated data. The video transmitter may allocate based on presence of repeated data, a target bit count corresponding to the picture, wherein the target bit count may be used in generating compressed data corresponding to the picture within a compressed bitstream that is used for communication of said sequence of pictures. The allocation of the target bit count comprises determining at least a portion of the target bit count based on combining of encoding of repeated data between the picture and at least one proceeding also comprising the repeated data. The video transmitter may determine a number of repeated pictures for comparison, based on allowable transmission latency for example.
Owner:AVAGO TECH WIRELESS IP SINGAPORE PTE
Advertisement distribution apparatus and advertisement distribution method
ActiveUS20140059588A1Selective content distributionElectrical cable transmission adaptationViewpointsDistribution method
An advertisement distribution apparatus includes: a receiver that receives a display request including a viewpoint condition and advertisement information; an advertisement space setting unit that sets an advertisement space corresponding to the viewpoint condition to video data of an arbitrary viewpoint position generated based on imaging data having different viewpoint positions; an advertisement information setting unit that sets the advertisement information received by the receiver to the advertisement space set by the advertisement space setting unit; and a video transmitter that transmits the video data of the arbitrary viewpoint position in which the advertisement information is set in the advertisement space to a terminal device.
Owner:YAHOO JAPAN CORP
Real-time video transmission method and device
ActiveCN108696772ASolve the problem of high transmission delayImprove experienceSelective content distributionVideo playerVideo transmission
The embodiment of the invention discloses a real-time video transmission method and device. The method comprises the steps that a video sender sends a connection request to a video server and receivesa connection acknowledgment message returned by the video server, thereby establishing connection with the video server, wherein the connection request comprises identity information of the video sender; after the video server receives the connection request, the video server activates at least one associated video player to open a transmission channel corresponding to the video sender accordingto the identity information; and the video sender sends video frame fragments of video coding frames generated in real time to the video server according to a set data transmission parameter, so the video server forwards the video frame fragments to the video player of which corresponding transmission channel is opened, and the real-time video playing is carried out. Through application of the technical scheme provided by the embodiment of the invention, the video transmission delay can be reduced, and the user experience can be improved.
Owner:苏州谦问万答吧教育科技有限公司
Real-Time Video Transmission System
ActiveUS20090094657A1Improve communication performanceReduce latencyPulse modulation television signal transmissionCode conversionData streamNetwork control
A system for transferring real-time video data over a network comprises a video source, a video encoder for encoding and compressing video data supplied by the video source and a first network interface controller for transmitting compressed video data on the network. Furthermore a second network interface controller for receiving compressed video data from the network, a video decoder for decoding the video data received by the second network interface controller, and an image processor for processing and / or displaying the decoded video data from the video decoder are provided. The network controllers are configured for transmitting and receiving data in a continuous data stream which is synchronized with a clock signal and in a format which prescribes a pulse sequence of individual bit groups of which at least one is used for video data.
Owner:SMSC EURO
Scalable real-time videoconferencing over WebRTC
InactiveUS20170359187A1Avoids sharing SSRCsMinimize the numberSpecial service provision for substationTelevision conference systemsVideo senderMedia server
A WebRTC-compliant media server avoids sharing the SSRCs of passive participants (namely, the video viewers who do not send video) by intercepting feedback packets (issued from the viewers) on the server side, modifying those packets, and then transmitting the modified packets back to the sender such that, when the sender receives these feedback packets, the sender treats the packets as if they were sent by a known SSRC. Preferably, the known SSRC is one that is associated with a single SSRC (e.g., a dummy or surrogate SSRC, or a technical SSRC, in either event that was previously shared with the video sender). The sender knows how to handle these packets and can then send the desired answer to the viewer(s) to maintain the conference stable and operational even as the number of participants grows and exceeds the SSRC peer limitations.
Owner:LOGMEIN INC
Method and system for motion-compensated frame-rate up-conversion for both compressed and decompressed video bitstreams
ActiveUS20160065991A1Color television with pulse code modulationColor television with bandwidth reductionVideo bitstreamComputer graphics (images)
A video receiver is operable to receive three-dimensional (3D) video bitstreams from a video transmitter. The received 3D video bitstreams comprises a plurality of video frames and corresponding coding information. The coding information, for example, block motion vectors, block coding modes, quantization levels, and / or quantized residual data, is extracted for performing frame-rate up-conversion on the received plurality of video frames. The coding information is generated at the video transmitter via entropy decoding on a compressed 3D video from a video feed from, for example, an IP TV network. When an uncompressed 3D video is received, the video receiver is operable to perform frame-rate up-conversion on the received uncompressed 3D video using extracted block motion vectors and associated confidence-consistence measure. When a compressed 3D video is received, the video receiver is configured to perform video decompression on the received compressed 3D video prior to the frame-rate up-conversion.
Owner:AVAGO TECH INT SALES PTE LTD
Method for dynamically adjusting video transmission efficiency in video session
ActiveCN103780869ADynamically adjust transmission efficiencyGuaranteed fluencyTelevision conference systemsTwo-way working systemsVideo transmissionVideo sender
The invention provides a method for dynamically adjusting video transmission efficiency in a video session. According to the method, a video sender client terminal forwards video data to a video receiver client terminal through a streaming media server. The method comprises the following steps that a, the video session is created; b, the video sender client terminal sends a test pack for testing network status to the streaming media server, and the time spent by receiving a response signal is recorded; c, the video sender client terminal calculates the latest response time mean value; d, the video sender client terminal judges whether the latest response time mean value exceeds the threshold value or not in real time, and if not, the step e is executed; if yes, the step f is executed; e, the video sender client terminal transmits video data to the streaming media server at first video capture efficiency; f, the video sender client terminal transmits video data to the streaming media server at second video capture efficiency lower than the first video capture efficiency. By the utilization of the method, the video transmission efficiency can be dynamically adjusted, and the fluency of the video session is ensured.
Owner:BEIJING 58 INFORMATION TECH
Video communication method and system for dynamically modifying video encoding
ActiveUS20130293668A1Bandwidth and CPU resourceQuick and reasonable and efficientTwo-way working systemsDigital video signal modificationCommunications systemVideo encoding
The present invention relates to a video communication method for dynamically modifying video encoding, which includes: obtaining a video window size change signal in a video receiver; generating an encoding modification signal according to the change signal; transmitting the encoding modification signal to a video sender; the video sender receiving the modification signal and modifying encoding parameters of a encoder in real time according to the modification signal. The present invention also relates to a video communication system for dynamically modifying video encoding. Once video window size changes, the video receiver immediately sends a signal to the video sender to inform the video sender to modify encoding parameters. The video sender modifies the encoding parameters according to the signal, and adaptively modifies bandwidth and CPU requirement of each channel according to the RTCP feedback.
Owner:TENCENT TECH (SHENZHEN) CO LTD
Video transmission system and receiving/sending/transmission methods and devices
ActiveCN108600834ADoes not affect playback qualitySave transmission bandwidthTelevision conference systemsTwo-way working systemsImage resolutionVideo transmission
The invention is applicable to the technical field of communication, and provides a video transmission system and receiving / sending / transmission methods and devices. The video receiving method comprises the steps of: acquiring display window information of each video receiver in real time, wherein the display window information comprises a DPI (Dots Per Inch) parameter of the receiver and the sizeof a display window of the receiver; when the display window information is changed, calculating feedback information of each video receiver according to the display window information of each videoreceiver; sending the feedback information of each video receiver to a video sender or a server, wherein the feedback information is used for regulating video data output by the video sender; and receiving the video data output by the video sender or the server and playing the video data in the display window of each video receiver. In the method, the video sender can display environment information according to a video of the receiver, and a resolution of the video sent out by the video sender is regulated, so that a transmission bandwidth is saved when playing quality is not influenced.
Owner:SHENZHEN INPOR CLOUD COMPUTING CO LTD
Systems and methods for objective video quality measurements
InactiveUS8031770B2Picture framesPicture reproducers using cathode ray tubesVideo senderVideo quality
Disclosed herein are systems and methods for evaluating video quality. The systems include a video transmitter and a video receiver. The transmitter generates feature parameters from a reference video to be transmitted and transmits the generated feature parameters along with compressed video data via a network. The video receiver receives the feature parameters and the compressed video data via the network, evaluates the video quality of the received video using the feature parameters and transmits video quality evaluation results to the video transmitter via the network.
Owner:SK TELECOM CO LTD +1
Real-time mask video display method based on expression recognition
InactiveCN106778706AAdd funImprove production efficiencyTwo-way working systemsAcquiring/recognising facial featuresPattern recognitionAnimation
The invention provides a real-time mask video display method based on expression recognition, comprising an expression feature library, a mask library, a video sender S, and a video receiver R and also includes the steps of recognizing a facial expression in a video sent by the video sender based on the expression feature library, acquiring facial expression features of a current frame, sending the facial expression features to the video receiver, and selecting, by the video receiver, a mask meeting the facial expression features from the mask library for the purpose of displaying. Intelligent equipment with a video acquisition device is used herein to chat in real time, make live shows and make expression-drive-based animations by using masks based on users' real expressions, so that users may chat and make live shows with different masks, with video interaction interestingness improved, or may make expression-drive-based automated animations, so that animation making efficiency is improved greatly.
Owner:康一梅
Immersive full-view LED dome screen display and control system
InactiveCN110706604ASimplify processing difficultyImprove pixel utilizationTelevision system detailsStatic indicating devicesGraphicsControl system
The invention discloses an immersion type full-view LED dome screen display and control system. The system comprises a video processing control system and a dome screen display terminal. The data output end of the video processing control system is connected with the data input end of the dome screen display terminal; the video processing control system comprises a video splicer, a graph correctorand a video transmitter. The video splicer receives a plurality of paths of video images output by the upper computer; wherein the video splicer is used for splicing a plurality of paths of video images and segmenting each path of video image into a plurality of sub-images, the graphic corrector is used for converting each sub-image segmented by the video splicer into a curved surface image and correcting gaps and distortion of joint parts of the curved surface images, and the video sender is used for sending the video images processed by the video splicer and the graphic corrector to the dome screen display terminal. According to the invention, all signals are processed in parallel in real time, and the output signals also ensure the synchronism, so that the smoothness and synchronism ofthe whole display picture of the dome screen display terminal are ensured.
Owner:CHENGDU CHENGDIAN GUANGXIN TECH
Intelligent central surveillance server system and controlling method thereof
InactiveUS20140285659A1Improve efficiencyColor television detailsClosed circuit television systemsDigital videoMotion sensing
The present invention relates to an intelligent central surveillance server system and controlling method thereof, which are capable of determining whether or not a preset event occurs based on a sensor sense signal and / or a motion sense signal and transmitting / receiving image information obtained in the occurrence of event through a serve-client system. The intelligent central surveillance server system comprises: a sensor unit configured to sense and transmit a sense signal; a camera unit configured to pick and transmit video information; and a digital video transmitter configured to determine whether or not a preset event occurs, based on the sense signal and / or the video information, and transmit first video information and first list information related to the first video information on the basis of the point of occurrence of event when the preset event occurs.
Owner:4NSYS
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