Entries |
Document | Title | Date |
20080211918 | Method and Device for Evaluating the Quality of a Signal - A method and device evaluating the quality of a signal by virtue of the deviation of at least one measured characteristic variable of the signal in relation to an associated reference value. The quality is calculated by averaging all of the deviations which are determined and standardized in relation to said characteristic variables. | 09-04-2008 |
20080211919 | System and method for analyzing and displaying digital signal quality information - A method and apparatus for determining and displaying signal quality measurement on a television display screen. The method and apparatus of this invention provides for the display of signal quality measurements, including measurements of signal to noise ratio, bit error rate and channel multi-path distortion in addition to the signal strength. Apparatus and method are described whereby these signal quality measurements may be ascertained and provided either through television overlay or through NTSC radio frequency modulation to particular television channels. | 09-04-2008 |
20080211920 | MONITORING APPARATUS - A video/audio signal transmitted from a transmission source | 09-04-2008 |
20080231711 | AUTOMATED COMPLIANCE TESTING FOR VIDEO DEVICES - A method of automated video device testing, and source and sink video devices are disclosed. A test signal may be provided by way of a video link from a video source to a video sink, over a video link extending therebetween. The method includes receiving on the video link a request from the video sink to provide the test signal; identifying based on the request, a requested test signal; providing the requested test signal from the video source to the video sink over the video link. In another embodiment, a video sink may be queried over a video link to determine a metric describing at least a portion of know video signal, as received and determined at the video sink to verify integrity of the video signal at the video sink. | 09-25-2008 |
20080284853 | Non-Intrusive Determination of an Objective Mean Opinion Score of a Video Sequence - According to the described method, interframe similarities s(i) are calculated for the frames of the video sequence, each interframe similarity s(i) being indicative of the similarity of two consecutive frames i—1, i. As it has been found, an analysis of the interframe similarities allows to determine various parameters that are characteristic for the mean opinion score MOS, such as the downsampling rate, pausing, or a noise-dependence of the interframe similarity at the keyframes. An objective mean opinion score MOSo being a value close to the mean opinion score is derived as a value linear in the pausing parameter, a keyframe distance parameter and further quality parameters measured in the spatial domain, corrected by a second value being an exponential model in the downsampling rate. | 11-20-2008 |
20090096874 | Video Communication Quality Estimation Apparatus, Method, and Program - A multi-modal quality estimation unit ( | 04-16-2009 |
20090102927 | WIRELESS TRANSMISSION SYSTEM FOR REGISTERING SOURCE DEVICE IN SINK DEVICE - A wireless communication system is disclosed, which includes a source device having a high-rate wireless transmitter circuit for wirelessly transmitting a video signal, and a sink device having a high-rate wireless receiver circuit for receiving the wirelessly transmitted video signal. The source device includes a memory for storing a device ID of the source device and a low-rate wireless transceiver circuit, in addition to the high-rate wireless transmitter circuit. The low-rate wireless transceiver circuit wirelessly transmits a control signal including the device ID read-out from the memory to the sink device, and wirelessly receives a registration control signal for registering the source device in the sink device, from the sink device. | 04-23-2009 |
20090102928 | MONITORING APPARATUS - A monitoring method for monitoring a video/audio signal transmitted from a transmission source to a transmission destination has a step of storing the video/audio signal transmitted from the transmission source to the transmission destination repeatedly for a predetermined time period, a step of comparing a first characteristic amount extracted from the video/audio signal before the transmission and a second characteristic amount extracted from the video/audio signal after the transmission in real time, a step of determining an error occurrence when there is a difference of a predetermined value or more between the first characteristic amount and the second characteristic amount, and a step of transmitting the stored video/audio signal to a predetermined destination when an error occurrence is determined. | 04-23-2009 |
20090179989 | Monitoring System for Monitoring Coverage of Broadcast Transmissions - A system for monitoring television signals broadcast by at least one transmission antenna in a broadcast area includes a monitoring control center and a plurality of remote monitoring units distributed in television signal receiving locations of the broadcast area remote from the transmission antenna. The remote monitoring units are configured to receive the television signals irradiated in the respective locations, process the television signals and send to the monitoring control center information related to the processed television signal. In particular, the remote monitoring units include a receiver adapted to receive the television signal, a measuring system adapted to perform measures on radio-electric features of the received television signal, and a communication system adapted to communicate measurement results to the remote monitoring center, exploiting a communication link between the remote monitoring unit and the control center. | 07-16-2009 |
20090309978 | Receiver, situation-of-installation notification method, and transmitting and receiving system - A receiver includes: a band detection unit that detects a frequency band within which the receiver can be connected to a transmitter by radio; a quality detection unit that detects the transmission quality level of video data, which is transmitted from the transmitter, using the frequency band detected by the band detection unit; and a notification unit that notifies an area in which the frequency band within which the receiver can be connected to the transmitter by radio is detected and the transmission quality level is detected to be higher than a predetermined threshold. | 12-17-2009 |
20100033580 | ACCESS TO VIDEO STREAMS ON MOBILE COMMUNICATION DEVICES - A method and apparatus to provide access to video streams associated with communication channels in a communication network are described. The method may comprise monitoring selection of a communication channel by a user of a mobile communication device, identifying at least one video feed associated with the selected channel, and providing access to the mobile communication device to the selected at least one video feed. Providing access may comprise associating the selected video stream with the mobile communication device. | 02-11-2010 |
20100103272 | CIRCUIT AND METHOD OF CONTROL OF DDC DATA TRANSMISSION FOR VIDEO DISPLAY DEVICE - To provide a video display device capable of transmitting attribute information more securely to a video output device capable of bidirectional communication. In a case in which there has been a request from the video output device for EDID attribute information, monitoring is performed to determine whether or not transmission of the EDID is completed properly (S | 04-29-2010 |
20100177196 | Method of Testing Transmission of Compressed Digital Video for IPTV - The invention relates to a digital video test sequence comprising an intra coded picture (I) and a plurality of predicted pictures (P, B) following said intra coded picture. Each of said intra coded picture and predicted pictures comprises a luminance component (Y) and two chrominance components (Cr, Cb). A variation in at least one of the chrominance components between at least two successive pictures is uncorrelated with a variation in the luminance component between said successive pictures for at least a portion of a display panel on which said pictures are to be displayed. The video test sequence can be used in detecting packet loss for IPTV data connections. | 07-15-2010 |
20100231726 | Mthod and Apparatus for Detection and Prevention of Crosstalk In a Multiple Tuner Receiver - Receivers using multiple tuners may introduce crosstalk between signals provided to the tuners. The disclosed embodiments relate to a method and apparatus for detecting and preventing crosstalk. A method is described that includes providing a signal to a first signal processing path, tuning to a channel in the signal provided through the first signal processing path, tuning to the channel in the signal through a second signal processing path, and determining that crosstalk exists if the channel is present on the second signal processing path. An apparatus is also described containing means for providing a signal to a first signal processing path, tuning to a channel in the signal provided through the first signal processing path, tuning to the channel in the signal through a second signal processing path, and determining that crosstalk exists if the channel is present on the second signal processing path. | 09-16-2010 |
20100245595 | RECORDER TEST SYSTEM - A system is described that provides a full end to end test of a recorder system to assure that a failure of any one or more channels is quickly detected so that maintenance can be performed. | 09-30-2010 |
20100253785 | USER NOTIFICATION OF BROADCAST COMMUNICATION CHANNEL PROBLEMS - A method is presented for notifying a user of a broadcast communication channel problem. At a broadcast distribution facility, a problem involving a first broadcast communication channel from the broadcast distribution facility to a broadcast communication receiver associated with the user is detected. A cause of the problem is ascertained at the facility. The broadcast distribution facility then relays an indication of the cause of the problem to the receiver over a second broadcast communication channel from the facility to the receiver. The receiver informs the user of the cause of the problem. | 10-07-2010 |
20100321507 | Media Source Selection Based On Source Quality - A computer-implemented method comprises determining which of a plurality of media sources has a higher quality than at least one other media source and selecting the media source having the higher quality. | 12-23-2010 |
20110001833 | COMPUTERIZED DEVICE AND METHOD FOR ANALYZING SIGNALS IN A MULTIMEDIA OVER COAX ALLIANCE (MOCA) NETWORK AND SIMILAR TDM / ENCRYPTED NETWORKS - The present invention relates to testing signals on a coaxial home network that carries a digital video signal. It has direct application to testing so-called Multimedia over Coax Alliance (MoCA) standards-compliant networks and applies to similar networks. In one mode, a computerized device joins the MoCA network and relays signals intended for a set-top-box to the STB. In another mode, the computerized device joins the MoCA network instead of the STB and tests signal strength, attenuation and similar physical layer characteristics. | 01-06-2011 |
20110025857 | SYSTEM AND METHOD FOR ANALYZING VIDEO STREAM - A method is disclosed of analyzing a video stream using a video analyzer. The video stream includes image frame data corresponding to an integer N number of image frames, respectively. The video analyzer includes a controller and a frame processor. The method includes setting a problem threshold value corresponding to a parameter of the image frame data, receiving first image frame data corresponding to a first image frame, analyzing the parameter of a portion of the received first image frame data and generating an analyzed value and determining whether there is a problem based on the analyzed value and the problem threshold value. The portion of the analyzed portion of the received first image frame data is less than the total received first image frame data. | 02-03-2011 |
20110043640 | Methods and apparatus for detecting and locating leakage of digital signals - A system for detecting and locating a digital TV leakage signal in an HFC network. The system comprises a headend unit and a leakage detector. The headend unit receives the TV signal at the headend for use as a reference signal. The reference signal is sampled at a rate corresponding to a time reference signal, to produce reference signal samples. The reference signal samples and timestamp are transmitted to the leakage detector. The detector receives the digital TV signal from a leakage source, for detection as a leakage signal. The detector includes a cross-correlation processor. The leakage signal is sampled at a rate corresponding to the time reference signal, to produce leakage signal samples. The cross-correlation processor performs a cross-correlation of the reference signal samples with the leakage signal samples to produce a cross-correlation function having a peak, and the TV leakage signal is detected from this peak. | 02-24-2011 |
20110050907 | ELECTRONIC DEVICE AND METHOD FOR MEASURING VIDEO SIGNALS - An electronic device includes a video signal detection system to measure video signals. A measurement method can measure the video signals by using the electronic device. The measurement method sets measurement parameters that are used to measure video signals. Furthermore, the measurement method generates measurement results that each corresponds to a video signal transmission channel between the electronic device and a video signal processing device. In addition, the measurement method generates a measurement report according to all the measurement results. | 03-03-2011 |
20110050908 | METHOD AND APPARATUS FOR RECEIVING SIGNAL - A method of controlling devices, and which includes converting, via a transmitting apparatus, a signal including at least one of the video/audio and data into a first definition wireless signal, transmitting, via the transmitting apparatus, the converted first definition wireless signal to a receiving apparatus, receiving, via the receiving apparatus, the first definition wireless signal, extracting, via the receiving apparatus, the at least one of the video/audio and data included in the first definition wireless signal, detecting, via a detector on the receiving apparatus, a quality of the received first definition wireless signal, and comparing, via a processor on the receiving apparatus, the detected quality of the received first definition wireless signal with a predetermined value, and transmitting a first command to the transmitting apparatus to transmit a second definition wireless signal including the at least one of the video/audio and data to the receiving apparatus, when the detected quality of the received first definition wireless signal is lower than the predetermined value, the first and second definition wireless signals using different wireless communication standards. | 03-03-2011 |
20110058044 | MEASUREMENT APPARATUS - [Object] To provide a measurement apparatus capable of causing different data display forms to coexist in each of a plurality of measurement channels on a common display screen with comparatively simple operation. | 03-10-2011 |
20110080485 | COMMUNICATION APPARATUS, CONTROL METHOD, AND COMPUTER READABLE RECORDING MEDIUM - A communication apparatus includes a communication unit, a first determination unit, a second determination unit, and a control unit. The communication unit communicates with an external apparatus via communication lines that conform to HDMI standard. The first determination unit determines whether the first data indicating that the external apparatus displays video data transmitted from the communication unit to the external apparatus is detected by the communication unit has received via a CEC line. The second determination unit determines whether a second data indicating that the external apparatus displays video data transmitted from the communication unit to the external apparatus is detected by the communication via a TMDS line. The control unit determines whether to transmit video data to the external apparatus based on at least one of a determination result obtained by the first determination unit and a determination result obtained by the second determination unit. | 04-07-2011 |
20110085045 | MODULATION ANALYZER AND LEVEL MEASUREMENT DEVICE - A method is provided for determining a modulation of a CATV channel, the modulation being one of a digital modulation and an analog modulation. The method includes passing at least a portion of a tuner output from a tuner to a RF detector, and passing a RF detector output from the RF detector to a sync detector. The method further includes attenuating at least a portion of a sync detector output to create a remaining portion of the sync detector output, and passing the remaining portion of the sync detector output to a peak detector. The method further includes passing an output of the peak detector to a subsequent device, the output of the peak detector indicating whether the modulation of the CATV channel. | 04-14-2011 |
20110096173 | AV DELAY MEASUREMENT AND CORRECTION VIA SIGNATURE CURVES - Embodiments of the present invention provide systems and methods for non-invasive, “in-service” AV delay detection and correction. These systems and methods do not modify the audio signal or the video signal, nor do they rely on any metadata to be carried with the audio signal or the video signal via the distribution path. Instead, agents located at various points along the distribution path generate very small signature curves for the audio signal and the video signal and distribute them to a manager via a separate data path other than the distribution path. The manager calculates a measured AV delay caused by the distribution path based on these signature curves, and then optionally corrects the measured AV delay by adjusting an in-line delay in the distribution path. | 04-28-2011 |
20110221909 | APPARATUS AND METHOD FOR PROVIDING BROADCASTING SERVICE AND SYSTEM THEREOF - Disclosed is an apparatus and method for providing a broadcasting service in a single frequency broadcasting network, and a system thereof. The apparatus for receiving broadcasting signals includes an RF receiver configured to receive an RF broadcasting signal having identification information to identify a broadcasting signal transmitter and down-convert the received RF broadcasting signal; a reception characteristic measurer configured to measure reception characteristics of the RF broadcasting signal based on the identification information and generate reception characteristic information; and a reception characteristic transmitter configured to transmit the reception characteristic information to a broadcasting system. | 09-15-2011 |
20110249127 | Estimating Video Quality Corruption in Lossy Networks - Techniques are provided herein for estimating video quality corruption at a device in a network from a data stream encapsulating a video transport stream comprising one or more video frames. The video transport stream is decoded to produce a current video frame. A current loss affected region map is generated comprising values configured to indicate a level of quality for each macroblock in the current video frame, and a decoder based or deterministic quality corruption metric is generated based on the values in the current loss affected region map. When the network device does not have video decoding capability, techniques are further provided for computing a statistics-based video quality corruption metric based on a data loss rate for the current video frame and other statistics. | 10-13-2011 |
20110317020 | System and Method to Detect a Fault in Transmission of a Stream of Media Data Corresponding to a Media Channel - A particular method may include detecting at a first network device of a video distribution network a fault in transmission of a stream of media data with a media channel. The method also includes, in response to detecting the fault, transmitting a notification that includes fault information corresponding to the detected fault and the stream of media data corresponding to the media channel from the first network device to a second network device of the video distribution network. | 12-29-2011 |
20120002059 | Video Feedback Loop - Techniques to enable the monitoring, quality control, automatic verification of content use, confidence monitoring, and/or net-return monitoring of a forward video transmission between an originating site or content producer (e.g., a TV studio) and distribution or consuming site(s). In particular, the distribution site(s) return video signals based on the forward video transmission, from various handover points back to the originating site, to provide information on the video quality at the handover point. | 01-05-2012 |
20120013748 | SYSTEMS AND METHODS FOR PRIORITIZATION OF DATA FOR INTELLIGENT DISCARD IN A COMMUNICATION NETWORK - Capacity and spectrum constrained, multiple-access communication systems optimize performance by selectively discarding packets. Changes in the communication systems may be driven using control responses. Control responses include intelligent discard of network packets under capacity constrained conditions. Packets are prioritized and discard decisions are made based on the prioritization. Various embodiments provide an interactive response by selectively discarding packets to enhance perceived and actual system throughput, provide a reactive response by selectively discarding data packets based on their relative impact to service quality to mitigate oversubscription, provide a proactive response by discarding packets based on predicted oversubscription, or provide a combination thereof. Packets may be prioritized for discard using correlations between discards and bandwidth reduction and quality degradation. The quality degradation for video packets may be measured objectively. | 01-19-2012 |
20120044361 | Tap Units Having Reverse Path Burst Mode Detection Circuits and Related Methods of Identifying Reverse Path Noise Sources and Reducing Reverse Path Noise Funneling - Radio frequency (“RF”) tap units are provided that include an RF input port, an RF output port that is coupled to the RF input port and a plurality of RF tap ports that are coupled to the RF input port. These tap units further include a burst mode detection circuit that is coupled between the RF input port and at least one of the plurality of RF tap ports. | 02-23-2012 |
20120057030 | ROBUST SENSING OF DVB-T/H TRANSMISSIONS - A method and system is provided for detecting the presence of a DVB (digital video broadcasting) transmission. The method includes receiving an RF (radio frequency) signal in a selected channel ( | 03-08-2012 |
20120086813 | SYSTEMS AND METHODS FOR DETECTING TAMPERING WITH VIDEO TRANSMISSION SYSTEMS - Systems and methods for controlling transmission of signals are described. A camera-side modem is configured to receive two signals from a video camera and to extract a received passband signal from a transmission line. A detector in the camera-side modem generates an alarm signal when disruption or loss of the received passband signal is identified. An enable signal is used to control transmission of at least one of the baseband video signal and the passband video signal. The passband signal may be identified by an estimate of mean square error in a quadrature amplitude demodulator, a measurement of reliability provided by a constellation detector, a measurement of reliability based on a sequence of frame synchronizations and/or an estimate of mean square error in an equalizer. The detector may monitor a gain factor in an automatic gain control module of the camera-side modern and/or a magnitude of the received passband signal. | 04-12-2012 |
20120086814 | RECEIVING DEVICE AND CAMERA SYSTEM - A transmitting device in accordance with the present invention includes an encoding unit that converts an input video signal into encoded data and sends out the encoded data to a transmission line, and a synchronization signal generation unit that generates a synchronization signal SYNC for adjusting the phase of an input video signal on the basis of phase information transmitted through the transmission line, wherein the phase information PHS includes information indicating that a timing of a synchronization signal generated by the synchronization signal generation unit is to be advanced by the time necessary for transmission, and the synchronization signal generation unit generates the synchronization signal SYNC so that an input video signal is advanced by the time necessary for transmission. | 04-12-2012 |
20120113269 | RECEIVER AND A TRANSMITTER - A receiver is described for a testing device for a data stream in which the data stream comprises a plurality of encoded data components. The receiver comprises an input for inputting a plurality of encoded data components, a processor for processing the plurality of encoded data components; and a plurality of outputs each for outputting a processed one of the plurality of encoded data components. The receiver is arranged, such that, in use, a plurality of encoded data components received at the input are processed by the processor and a processed one of the plurality of encoded data components is output from one of the plurality of outputs. | 05-10-2012 |
20120162442 | AUTOMATIC VIDEO DELAY CORRECTION METHOD - An automatic video delay correction method in which an automatic delay equalizer is used. The method includes steps of: using a processor to read a video signal and analyze and judge whether the back porch of the three primary color signal in a received video signal is the same; if not, using a delay regulator to automatically adjust the delay time of any two leading or trailing primary color signal to generate an adjusted back porch of two primary color signal; using the processor to compare the adjusted back porch of the two primary color signal with the back porch of a maximum delay time to judge whether the adjusted back porch is the same as the back porch of the maximum delay time; and if so, using the processor to generate an adjusted video signal and transmit the adjusted video signal to a remote-end receiving device. | 06-28-2012 |
20120212628 | SYSTEM AND APPARATUS FOR CASCADING AND REDISTRIBUTING HDTV SIGNALS - Redistribution of multimedia signals or the like within a service area is performed by identifying one or more pieces of white space in the VHF/UHF spectrum, selecting a carrier frequency for each piece of white space spectrum, parsing the signal into a like number of components and modulating each component over a carrier frequency. The receiving device performs the reverse operation for reconstructing the signal. | 08-23-2012 |
20120229653 | CONTROL METHOD FOR TV SYSTEM - A control method for a TV system is provided. The TV system has a digital signal port connected to a player. The control method includes the following steps. After the TV system is turned on, a first set value is written into an EDID rewritable memory of the TV system. After the player is connected to the TV system, the TV system judges whether a quality of the first digital signal group is good or bad. If the quality of the first digital signal group is good, a video/audio signal is issued by the TV system according to the first digital signal group. Whereas, if the quality of the first digital signal group is bad, a second set value is written into the EDID rewritable memory. | 09-13-2012 |
20120314088 | SYSTEM AND METHOD OF IMPLEMENTING A TV BAND DEVICE WITH ENHANCED SPECTRUM SENSING - A TV band device for indoor applications uses information gleaned from a database inquiry based on geo-location information in combination with spectrum sensing to determine if TV channels are available for unlicensed use. | 12-13-2012 |
20120320222 | Video Quality Monitoring Method, Distribution Server, and Client - A video quality monitoring method includes a distribution server measuring first video quality index values according to a full-reference method by comparing a video, distributed from the distribution server to a client through a network, with a degraded video, generated by causing multiple scenarios of quality degradation due to the network in the video in a pseudo manner, creating characteristic data of first quality degradation values, obtained by causing the quality degradation to vary with the scenarios at regular intervals, and the first video quality index values corresponding to the respective scenarios, and transmitting the characteristic data to the client; and the client measuring a second quality degradation value in the video distributed through the network, and calculating a second video quality index value, equivalent to a value according to the full-reference method, of the distributed video from the measured second quality degradation value and the characteristic data. | 12-20-2012 |
20130016224 | SYSTEM FOR VIDEO QUALITY PREDICTION AND RELATED ASPECTSAANM Davis; Andrew GAACI WoodbridgeAACO GBAAGP Davis; Andrew G Woodbridge GB - A method of generating a measure of quality for a video signal representative of a plurality of frames, the video signal having: an original form; an encoded form in which the video signal has been encoded using a compression algorithm utilising a variable quantiser step size such that the encoded signal has a quantiser step size parameter associated therewith and utilising differential coding such that the encoded signal contains representations of the prediction residual of the signal; and a decoded form in which the encoded video signal has been at least in part reconverted to the original form, the method comprising: a) generating a first quality measure which is dependant on said quantiser step size parameter according to a predetermined relationship; b) generating a masking measure, the masking measure being dependant on the spatial complexity of at least part of the frames represented by the video signal in the decoded form according to a first predetermined relationship; and c) generating a combined measure, the combined measure being dependant upon both the first measure and the masking measure according to a predetermined relationship, wherein, the method also includes: generating an first measure which is dependant on the prediction residual of the signal according to a first predetermined relationship; and identifying one or more regions of the picture for which the first measure exceeds a threshold, wherein the masking measure is dependant on the spatial complexity of the identified region(s) according to a predetermined relationship; and further comprises: generating a background measure which is dependant on the prediction residual of the signal according to a second predetermined relationship; and identifying one or more other regions of the picture for which the background measure is below a threshold, wherein the masking measure is dependent on the spatial complexity of the identified other region(s) according to a predetermined relationship. | 01-17-2013 |
20130027568 | SUPPORT VECTOR REGRESSION BASED VIDEO QUALITY PREDICTION - Systems and methods of objective video quality measurement based on support vector machines. The video quality measurement systems can obtain information pertaining to features of a target training video, obtain corresponding information pertaining to features of a reference version of the target training video, and employ the target training features and/or the reference training features to build video quality models using such support vector machines. Based on the target training features and/or the reference training features used to build such video quality models, the video quality models can be made to conform more closely to the human visual system. Moreover, using such video quality models in conjunction with target features of a target video whose perceptual quality is to be measured, and/or reference features of a reference video, the video quality measurement systems can be employed to predict measurements of the perceptual quality of such a target video with increased accuracy. | 01-31-2013 |
20130044224 | METHOD AND APPARATUS FOR ASSESSING QUALITY OF VIDEO STREAM - Objective video quality assessment models at media-layer or at packet-layer are known for estimating audio/video quality of experience. Existing models are not able to provide stable performance. A method for enabling quality assessment of a stream of frames of video data comprises receiving a sequence of packets, generating a set of parameters and inserting said generated set of parameters as side information into said stream of frames, wherein at least one parameter refers to a video slice level. A method for assessing the quality of a stream of frames of video data comprises receiving a sequence of packets, extracting a set of parameters from said sequence of packets and generating an estimated mean opinion score, wherein the video data comprise a slice level and wherein the extracted set of parameters comprises at least one parameter that refers to a video slice level. | 02-21-2013 |
20130063608 | Method and Apparatus for Spectrum Monitoring - A system, such as a satellite reception assembly or customer premises gateway, may comprise an analog-to-digital converter operable to digitize a signal spanning an entire television spectrum (e.g., cable television spectrum or satellite television spectrum) comprising a plurality of television channels. The system may comprise a signal monitor operable to analyze a signal to determine a characteristic of the signal. The system may comprise a data processor operable to process a television channel to recover content carried on the television channel. The system may comprise a channelizer operable to select first and second portions of the signal, and concurrently output the first portion to the signal monitor and the second portion to the data processor. | 03-14-2013 |
20130120590 | BLOCK TROUBLESHOOTING - A system may include a media content processing subsystem associated with a subscriber. The media content processing subsystem may be configured to scan at least a subset of channels of a media broadcast to create a spectrum block map; determine a spectrum block of a channel of a media broadcast indicated as being a troubled channel; and identify, according to the spectrum block map, at least one additional channel of the media broadcast included in the spectrum block of the troubled channel. | 05-16-2013 |
20130135482 | METHOD OF ESTIMATING VIDEO QUALITY AT ANY RESOLUTION - Method of estimating the perceived quality of a video sequence at a maximum spatial resolution and a maximum temporal resolution, and at a lower spatial resolution and/or temporal resolution, said method including filtering said video sequence at the lower temporal resolution and/or the lower spatial resolution so as to produce a filtered video sequence at the maximum spatial and temporal resolutions; determining a reference sequence that is, at most, equal to the content of said video sequence at the maximum spatial and temporal resolutions; and calculating a metric of perceived quality of said video sequence at the lower temporal resolution and/or the lower spatial resolution. | 05-30-2013 |
20130147969 | Methods and Apparatus For Locating Leakage of Digital Signals - A leak defined by coordinates is located in a network. A signal emitted from the leak is detected at first, second and third points having first, second and third sets of coordinates, respectively. Propagation delays t | 06-13-2013 |
20130162841 | Method of Determining Video Quality - A method and a device utilizing an algorithm using measurement data derived from parameters related to a video-streaming player and/or parameters related to data transport is disclosed. The data are used as input data in a model designed to generate a value corresponding to the quality of the multimedia sequence, such as for example a MOS score. | 06-27-2013 |
20130194434 | SYSTEM AND METHOD FOR MEASURING VIDEO QUALITY DEGRADATION USING FACE DETECTION - System and method to detect video quality degradation in a video stream received by a telecommunications endpoint, the method including: locating reference features characteristic of content in the received video stream; calculating reduced reference features from the located reference features; receiving reduced reference features of a transmitted video stream, the transmitted video stream corresponding to the received video stream; calculating a distance between the reduced reference features in the received video stream and the reduced reference features of the transmitted video stream; and detecting video quality degradation when the calculated distance exceeds a predetermined threshold. | 08-01-2013 |
20130229533 | ELECTRONIC DEVICE AND RECEPTION CONTROL METHOD - According to one embodiment, an electronic device receives a broadcast signal includes a high-speed transmission channel and a low-speed transmission channel. The electronic device estimates a CN when the electronic device is in an environment corresponding to a stationary state, based on a measured reception power, reception sensitivity required for receiving a broadcast service of the high-speed transmission channel and a necessary CN required for receiving the broadcast service of the high-speed transmission channel, and controls a processing of switching a demodulation target between the high-speed transmission channel and the low-speed transmission channel, based on a difference between the estimated CN and the measured CN. | 09-05-2013 |
20130235214 | METHOD AND APPARATUS FOR MEASURING QUALITY OF VIDEO BASED ON FRAME LOSS PATTERN - A method and apparatus for measuring the quality of a video is provided. The method comprises: generating a frame loss pattern of the video by indicating whether each frame in the video is lost or successfully transmitted; and evaluating the quality of the video as a function of the generated t came loss pattern. | 09-12-2013 |
20130250129 | WIRELESS LINK QUALITY MONITORING IN NETWORK-ENABLED TVs - A networked TV gathers information pertaining to the quality of a wireless link over which the TV receives streamed multimedia content, and presents an indication of the quality to a user, selectively blocks content from display if the quality falls below a threshold, and/or reports poor link quality to a network server for diagnostic action by technical personnel. | 09-26-2013 |
20130265444 | PREDICTIVE NETWORK TESTING - The invention relates to a method and apparatus for evaluating a network and for predicting network performance for a higher order modulation by analyzing network signals modulated using a lower order modulation format. A margin index may be generated for the current or projected modulation formats based on displacement vectors for received symbols to indicate a margin remaining before a codeword error occurs to alert the network operator of potential performance issues before actual codeword errors occur. | 10-10-2013 |
20130265445 | METHOD AND APPARATUS FOR ASSESSING THE QUALITY OF A VIDEO SIGNAL DURING ENCODING AND TRANSMISSION OF THE VIDEO SIGNAL - A method for assessing the quality of a transmitted video signal sequence at the receiver side includes the steps of: capturing the received input video bit stream prior to decoding and supplying it to a video bit stream analyzer; extracting, during a measurement time window, one or more features from the captured packet headers by the bit stream analyzer, without analyzing or decoding the packet payload; computing from the one or more features, a single parameter, xwpSEQ, representing an estimate of the spatio-temporal extent of the signal degradation due to packet-loss; supplying the determined parameter to a quality estimation module; and calculating, by the quality estimation module, a quality measure due to packet loss (Q | 10-10-2013 |
20130307996 | METHOD AND SYSTEM OF DIAGNOSING A VIDEO CONDITION EXPERIENCED AT A CUSTOMER PREMISES - A test controller can be operable to diagnose a video condition experienced at a customer premises. The test controller can include a port coupled to the customer premises. The test controller can also include a processor operable to activate a diagnosis sequence, send a set of questions to equipment at the customer premises, and isolate a cause of the video condition to a portion of the network, in response to receiving test a video access device can include a first port coupled to particular test equipment and a second port coupled to video access devices. The test controller can be part of a system that includes methods used to diagnose the video condition experienced at the customer premises. | 11-21-2013 |
20130314553 | Video Data Quality Assessment Method and Apparatus - A video data quality assessment method and apparatus are disclosed. The video data quality assessment method includes: acquiring a compression distortion parameter of video data; acquiring a frame impairment distortion parameter/video data rebuffering parameter; and calculating a video quality parameter according to the compression distortion parameter and the frame impairment distortion parameter/video data rebuffering parameter, where the video quality parameter is a difference between the compression distortion parameter and the frame impairment distortion parameter/video data rebuffering parameter. | 11-28-2013 |
20140139687 | MONITORING DEVICE AND METHOD FOR MONITORING A VIDEO SESSION IN A DATA NETWORK - The invention relates to a monitoring device for monitoring a video session in a data network between a video server providing a video file and a video client playing the video file, comprising: a data interface configured to connect to an end-to-end communication path between the video server and the video client and configured to capture video resolution information and to retrieve client screen resolution information; and a determination unit configured to determine a quality measure for the video session based on the video resolution information, based on the client screen resolution information and based on a buffer model, the buffer model modeling a fill level of a receive buffer in the video client, the receive buffer being configured to buffer the video file before playing the video file. | 05-22-2014 |
20140139688 | METHOD, APPARATUS, AND SYSTEM FOR LOCATING IPTV FAULT - A method, an apparatus, a system locate an IPTV fault, where the method includes: performing synchronized evaluation on a monitored IPTV video stream according to a synchronization message, obtaining multiple corresponding local upstream evaluation results; receiving an evaluation result report message sent by a downstream monitoring point, where the evaluation result report message includes a downstream evaluation result, an evaluation result identifier, and synchronization packet information; finding, according to the synchronization packet information and the evaluation result identifier in the evaluation result report message sent by the downstream monitoring point, an upstream evaluation result corresponding to the downstream evaluation result; comparing the downstream evaluation result with the upstream evaluation result, and performing fault locating according to a result of the comparison. The present disclosure implements IPTV fault locating, saves costs of manpower and material resources, and improves efficiency in fault locating. | 05-22-2014 |
20140160302 | METHOD AND SYSTEM FOR REGION-BASED MONITORING OF VIDEO ASSETS - A method and system for monitoring video assets provided by a multimedia content distribution network (MCDN) includes an expert test monitoring platform (ETMP) configured to emulate MCDN client systems at a facility of an MCDN service provider. The ETMP may be used to test monitor MCDN performance by acquiring a baseband video signal and performing a test operation including at least one check point condition. The check point condition may be associated with a masked region of the video signal and may also involve a test of an audio channel. A plurality of test operations and/or check point conditions may be defined and executed on the baseband video signal, while the results of the test operation may be logged. | 06-12-2014 |
20140267786 | PROCESSING PATH SIGNATURES FOR PROCESSING ELEMENTS IN ENCODED VIDEO - In one embodiment, a method receives packets including video data that was encoded or decoded. The packets are dynamically routed through processing elements in different routes and some of the packets include signatures from processing elements that processed each respective packet. The method then determines a plurality of captures each including a set of packets and determines for each capture, a set of processing elements that processed the set of packets. The set of processing units inserted respective signatures into a user data section of the packets that is defined by a standard used to encode or decode the video data. The determined set of processing elements are analyzed for each capture to determine a processing element in the set of processing elements that is considered to be causing a performance degradation. Then, the method performs a remedial action associated with the processing element. | 09-18-2014 |
20140267787 | SYSTEM AND METHOD FOR MONITORING VIDEO PERFORMANCE - A computer-implemented method, computer program product, and computing system for receiving one or more transmitted frame identifiers that are mathematical representations of one or more transmitted video frames included within a multi-frame video. One or more video frames included within the multi-frame video are received, thus defining one or more received video frames. A mathematical representation of each of the one or more received video frames is generated, thus defining one or more received frame identifiers. The one or more received frame identifiers are compared to the one or more transmitted frame identifiers to determine a level of similarity between the one or more received video frames and the one or more transmitted video frames. | 09-18-2014 |
20140267788 | METHOD FOR IDENTIFYING AND PRIORITIZING FAULT LOCATION IN A CABLE PLANT - A method of prioritizing estimated fault locations within a network includes monitoring multiple different performance parameters for unacceptable threshold levels via communications with a set of terminal network elements and separately analyzing the different performance parameters to identify potential network fault locations on the network. Accordingly, a plurality of priority rankings of potential network fault locations can be generated, one for each performance parameter monitored, and then combined to generate an overall priority ranking of potential fault locations including at least a highest priority inspection point estimated as being a most likely source of a fault on the network. | 09-18-2014 |
20140300757 | VIDEO QUALIFICATION DEVICE, SYSTEM, AND METHOD - Novel tools and techniques are provided for implementing video qualification, which might include implementing video quality measurements at a subscriber premises and qualification of the subscriber premises for particular levels of video data transmission. In some cases, one or more customer premises equipment might comprise video quality chips that might perform measurements of the telecommunications links, and might send the results to a server associated with the service provider. The server might determine available video services, based on the results of the measurements, and might send the subscriber notifications indicating that the subscribers qualify for particular video services. In some cases, implementing video qualification might include the server determining that video service levels provided to a customer premises has been decreased or otherwise negatively affected. The server might order diagnosis and repairs of the affected equipment, and might send a notification to the subscriber indicating that repairs are underway. | 10-09-2014 |
20140375825 | METHOD AND SYSTEM FOR REGION-BASED MONITORING OF VIDEO ASSETS - A method and system for monitoring video assets provided by a multimedia content distribution network (MCDN) includes an expert test monitoring platform (ETMP) configured to emulate MCDN client systems at a facility of an MCDN service provider. The ETMP may be used to test monitor MCDN performance by acquiring a baseband video signal and performing a test operation including at least one check point condition. The check point condition may be associated with a masked region of the video signal and may also involve a test of an audio channel. A plurality of test operations and/or check point conditions may be defined and executed on the baseband video signal, while the results of the test operation may be logged. | 12-25-2014 |
20150009343 | System and Method For Protecting Transmissions of Wireless Microphones Operating in Television Band White Space - A wireless microphone system broadcasts a pilot tone at the designated ATSC pilot position in the TV Band channel being used by the wireless microphone system. The pilot tone is a readily detectable waveform transmitted in the ATSC pilot position. The pilot tone can be generated by any one of: a standalone pilot tone generator; a pilot tone generator incorporated into a wireless microphone receiver; or, a pilot tone generator incorporated into a wireless microphone. | 01-08-2015 |
20150015722 | Endpoint Information for Network VQM - Video quality management (VQM) may be provided. First, transmitter metrics corresponding to a video stream may be determined by a transmitting endpoint. The determined transmitter metrics may then be transmitted from the transmitting end point and received by a receiver. The receiver may then determine receiver metrics for a video stream received at the receiver. A quality score may then be determined by the receiver. The quality score may be based on the received transmitter metrics and the determined receiver metrics. | 01-15-2015 |
20150022673 | METHOD AND APPARATUS FOR SPECTRUM MONITORING - A system, such as a satellite reception assembly or customer premises gateway, may comprise an analog-to-digital converter operable to digitize a signal spanning an entire television spectrum (e.g., cable television spectrum or satellite television spectrum) comprising a plurality of television channels. The system may comprise a signal monitor operable to analyze a signal to determine a characteristic of the signal. The system may comprise a data processor operable to process a television channel to recover content carried on the television channel. The system may comprise a channelizer operable to select first and second portions of the signal, and concurrently output the first portion to the signal monitor and the second portion to the data processor. | 01-22-2015 |
20150035996 | METHOD AND APPARATUS FOR EVALUATING MEDIA QUALITY - In a method for evaluating media quality, media reference quality and rebuffering event distortion quality are obtained, final media quality are determined according to the obtained media reference quality and rebuffering event distortion quality, where a parameter of the rebuffering event distortion quality includes at least one of the following: the number of rebuffering events, a duration of the rebuffering event, a multiple rebuffering event interaction impact parameter, initial media quality, and a factor describing media content complexity. When media quality is calculated, impact of the multiple rebuffering event interaction impact parameter, the initial media quality, and the factor describing media content complexity on the media quality is considered, thereby making a media quality evaluation result more accurate. | 02-05-2015 |
20150035997 | Video Qualification Device, System, and Method - Novel tools and techniques are provided for implementing video qualification, which might include implementing video quality measurements at a subscriber premises and qualification of the subscriber premises for particular levels of video data transmission. In some cases, one or more customer premises equipment might comprise video quality chips that might perform measurements of the telecommunications links, and might send the results to a server associated with the service provider. The server might determine available video services, based on the results of the measurements, and might send the subscriber notifications indicating that the subscribers qualify for particular video services. In some cases, implementing video qualification might include the server determining that video service levels provided to a customer premises has been decreased or otherwise negatively affected. The server might order diagnosis and repairs of the affected equipment, and might send a notification to the subscriber indicating that repairs are underway. | 02-05-2015 |
20150085144 | DUAL VIDEO GRAPHICS ARRAY CONNECTORS TESTING SYSTEM - A dual VGA connectors testing system includes an exchanging module and a controlling module connected to the exchanging module. The exchanging module includes a number inputting terminals and a number of outputting terminals. First group of RGB signal inputting terminals are connected to RGB signal outputting terminals, first group of scanning and controlling signal inputting terminals are connected to scanning and controlling signal outputting terminals, and first group of address signal inputting terminals are connected to address signal outputting terminals when the controlling module outputs a first signal; second group of RGB signal inputting terminals are connected to the RGB signal outputting terminals, second group of scanning and controlling signal inputting terminals are connected to the scanning and controlling signal outputting terminals, and second group of address signal inputting terminals are connected to the address signal outputting terminals when the controlling module outputs a second signal. | 03-26-2015 |
20150097970 | VIDEO SIGNAL FAULT DETECTION SYSTEM CAPABLE OF INFERENCE OF ABNORMAL COMPONENTS - A video signal fault detection system includes a front-end device and a back-end device. The back-end device includes: a quality evaluation unit generating a quality evaluation result associated with successive image frames captured by an image capturing device of the front-end device and transmitted through a transmission channel; a recognition unit generating, based on the quality evaluation result, a recognition output indicating a non-corruption condition or a corruption type of each transmitted image frame; and an inference unit inferring, based on a predetermined lookup table and a determination output generated based on the recognition output, whether each of the transmission channel and the image capturing device is normal or not. | 04-09-2015 |
20150097971 | MULTIMEDIA QUALITY MONITORING METHOD, AND DEVICE - Embodiments of the present invention provide a multimedia quality monitoring method, and a device. The method includes: determining reference quality of multimedia according to reference video quality and reference audio quality of the multimedia; acquiring multimedia distortion quality that is after video distortion and/or audio distortion of the multimedia occur/occurs; and determining quality of the multimedia according to the reference quality of the multimedia and the multimedia distortion quality. Therefore, accuracy of a multimedia quality monitoring result is improved. | 04-09-2015 |
20150109462 | CHECKING CLOSED CAPTION CONSISTENCY IN TRANSPORT STREAM IN REAL/DEFERRED TIME - A machine includes an input port to receive closed caption information, which can be decoded from a transport stream. A calculator calculates a bit rate for the closed caption information. The calculated bit rate for the closed caption information can then be output. An alert can also be generated if the calculated bit rate for the closed caption information is zero for longer than a user-defined period of time. | 04-23-2015 |
20150130952 | SYSTEM AND METHOD FOR ESTIMATING QUALITY OF VIDEO WITH FRAME FREEZING ARTIFACTS - A method and system that assesses video quality of transmitted video packet signals suffering from packet loss and delay. This packet loss and delay can create freeze events, which are observed as a jerkiness while viewing the video. The system and method compares the frames in a video transmission to determine freeze events; extracts a set of features from the locations of the freeze events and decoded video frames; and maps the set of features into a video quality score using a neural network. The video quality score provides an assessment of the effects of irregular frame freezes due to packet loss or delay on the quality of the video. | 05-14-2015 |
20150138373 | CONTENT-DEPENDENT VIDEO QUALITY MODEL FOR VIDEO STREAMING SERVICES - A method for estimating the perception quality of a digital video signal includes: (1a) extracting information of the video bit stream, which is captured prior to decoding; (1b) getting estimation(s) for one or more impairment factors IF using, for each of the estimations, an impact function adapted for the respective impairment factor; and (1c) estimating the perceived quality of the digital video signal using the estimation(s) obtained in step (1b). | 05-21-2015 |
20150326853 | METHOD FOR MONITORING A SIGNAL - A device for monitoring a signal, comprising: a combiner ( | 11-12-2015 |
20160029015 | Video quality evaluation method based on 3D wavelet transform - A video quality evaluation method based on 3D wavelet transform utilizes 3D wavelet transform in the video quality evaluation, for transforming the group of pictures (GOP for short) of the video. By splitting the video sequence on a time axis, time-domain information of the GOPs is described, which to a certain extent solves a problem that the video time-domain information is difficult to be described, and effectively improves accuracy of objective video quality evaluation, so as to effectively improve relativity between the objective quality evaluation result and the subjective quality judged by the human eyes. For time-domain relativity between the GOPs, the method weighs the quality of the GOPs according to the motion intensity and the brightness, in such a manner that the method is able to better meet human visual characteristics. | 01-28-2016 |
20160037119 | VIDEO RECORDING APPARATUS, AND VIDEO RECORDING METHOD WHEN TEMPORARY NETWORK FAILURE OCCURS - A video recording apparatus receives real-time video data from the network camera and records the received data in a disc bank. In the apparatus, once the network is recovered from a temporary failure, a backup recording region is secured in the bank, with the size of the backup recording region corresponding to the size of video data captured by the network camera during the network failure. Then, real-time video data is recorded in a region next to the backup recording region, and video data recorded in the network camera is recorded in the backup region. | 02-04-2016 |
20160087865 | METHOD AND APPARATUS FOR SPECTRUM MONITORING - A receiver is configured to be coupled to a television and data service provider headend via a hybrid fiber coaxial (HFC) network. The receiver comprises front-end circuitry operable to receive a signal that carries a plurality of television and/or data channels, and digitize the received signal to generate a digitized signal. The receiver comprises channelizer circuitry operable to select a first portion of the digitized signal, and select a second portion of the digitized signal. The receiver comprises processing circuitry operable to process the selected second portion of the digitized signal to recover information carried in the plurality of channels. The receiver comprises monitoring circuitry operable to analyze the selected first portion of the digitized signal to measure a characteristic of the received signal; and control the transmission of network management messages back to the headend based on the measured characteristic of the received signal. | 03-24-2016 |
20160088293 | Estimating Quality of a Video Signal - Method, device and computer program product for estimating quality of a video signal, wherein frames of the video signal are received at receiving means of the device, each frame comprising a plurality of blocks of pixels. A section of a first frame of the video signal, which is correctly received, is used to provide a concealed block for use in place of a block of a second frame of the video signal. A difference measure is determined indicative of a difference between at least some of the pixels surrounding the block in the second frame and the corresponding pixels surrounding the section in the first frame. The difference measure is used to estimate the quality of the second frame of the video signal. | 03-24-2016 |
20160134864 | METHODS, SYSTEMS, AND COMPUTER READABLE MEDIA FOR MONITORING AND/OR TESTING NETWORK COMMUNICATIONS - Methods, systems, and computer readable media for monitoring and/or testing network communications are disclosed. A method for monitoring network communications includes receiving packets from a network connected device, determining features associated with either the network connected device or a communications network to which the network connected device is connected by actively or passively monitoring or testing the packets, and automatically switching between passively monitoring or testing the packets and actively monitoring or testing the packets in response to receiving a packet carrying instructions. | 05-12-2016 |
20160150228 | SYSTEMS AND METHODS FOR PICTURE QUALITY MONITORING - A receiving device performs an action that results in a corrective measure being taken to address a picture quality issue detected in real time in the frames currently being displayed on a television or other device. The receiving device or a remote system compares indications of video frames currently being displayed to stored video frames for that program to detect macroblocking or a frozen video frame. The macroblocking or a frozen video frame may also or instead be detected by image analysis of the frames currently being displayed. If macroblocking or a frozen video frame is detected in the frames currently being displayed, the set-top box may switch to an alternative video source, change to a standard definition channel broadcasting the same video program or perform other corrective actions. | 05-26-2016 |
20160205397 | Source Agnostic Audio/Visual Analysis Framework | 07-14-2016 |