Abstract: Echo cancellation to alleviate timing varying channels may be provided. First, a feedback signal corresponding to one of a plurality of downstream paths and a combination upstream signal comprising a combination of upstream signals from a plurality of upstream paths may be received. Next, a plurality of echo corrected signals may be created using the feedback signal, the combination upstream signal, and a plurality of echo cancelation coefficients that each respectively correspond to each one of the plurality of echo corrected signals and that are different from each other. Then a one of the plurality of echo cancelation coefficients that corresponds to a one of the plurality of echo corrected signals that provides a best echo cancelation performance as compared to other ones of the plurality of echo corrected signals may be selected to use.

Abstract: Embodiments are directed toward analyzing images of cables or electronic devices to augment those images with information relating to the installation or troubleshooting of such cables and electronic devices. The images are analyzed to determine non-text characteristics of a connector of the cable or non-text characteristics of at least one port on the electronic device. These non-text characteristics can be compared with non-text characteristics of known connectors or ports to determine a type of the connector or a type of the ports on the electronic device. The images are then modified or overlaid with information identifying the type of connector or port.

Abstract: A synchronization signal generation function of an image transmitter is configured to generate an imaging synchronization signal. One or more processors of the image transmitter cause an imager of the image transmitter to perform new imaging every time the imaging synchronization signal is generated and cause communication data corresponding to captured image data output from the imager to be transmitted from a communicator of the image transmitter to an image receiver by radio waves. A synchronization signal generation function of the image receiver is configured to generate a display synchronization signal. One or more processors of the image receiver is configured to generate a display image corresponding to the captured image data from the communication data received by radio waves in a communicator of the image receiver and cause a monitor of the image receiver to display a newly generated display image every time the display synchronization signal is generated.

Abstract: Aspects of the present disclosure provide techniques for a user equipment (UE) to set uplink power control for a long uplink burst and a short uplink burst. The UE receives uplink power control information including a first set of power control parameters for a long uplink burst and a second set of power control parameters for a short uplink burst with the sets of power control parameters being different from each other. The UE configures uplink power control for the long uplink burst based at least on the first set of power control parameters and the short uplink burst based at least on the second set of power control parameters. The UE sends at least one of a long uplink burst and a short uplink burst based on the corresponding uplink power control and sends at least one uplink power-headroom report for the long uplink burst and short uplink burst.

Abstract: The present invention relates to testing signals on a coaxial home network that carries a digital video signal. It has direct application to testing Multimedia over Coax Alliance (MoCA) standards-compliant networks and applies to similar networks such as Data Over Cable Service Interface Specification (DOCSIS), Ethernet, and Wi-Fi. An embedded expert system can guide an inexperienced operator through the process of evaluating and resolving problems with a home network with little operator input.

Abstract: A tester system described herein enables a user (e.g., a field technician) to efficiently and conveniently upgrade, evaluate and troubleshoot customer premises networks and equipment. The tester system includes a dedicated tester device that is wirelessly coupled to a handheld device. In response to user input, the handheld device remotely controls the dedicated tester device to execute a testing routine to evaluate one or more customer premises wired and/or wireless networks.

Abstract: A image processing apparatus is provided, the image processing apparatus including: a transmitting terminal; a receiving terminal configured to receive an image signal from the transmitting terminal; a sensor configured to sense whether an image format error occurs in the image signal received in the receiving terminal; and at least one processor configured to control the transmitting terminal to recover the image signal transmitted from the transmitting terminal from the image format error in response to the image format error sensed by the sensor, and to control the receiving terminal to receive the recovered image signal.

Abstract: A method and apparatus that tests video quality includes a superimposing of at least one code to a video that is to be transmitted by a communication device to another communication device. The at least one code is transmitted such that the superimposed at least one code is extractable and readable from the decoded video by the device that receives the transmitted video. The extracted at least one code may then be read to determine the quality level of the transmitted video. The determination of quality for the received video may be based upon one or more tests performed using at least one code extracted from the received video.

Abstract: A system for testing multiple wireless routers independently and simultaneously using different types of device probes is disclosed. The system includes real-time, bi-directional/asynchronous communication and interaction between system components.

Abstract: A method is provided for path optimization for a message campaign. A graphical user interface representation of the message campaign is displayed. Sets of input instructions are received. Each set of input instructions corresponds to a path in the message campaign. The sets of input instructions are executed, causing different electronic messages to be sent according to corresponding paths to different destination targets. Responses are monitored. A winning path is then determined based on a correlation of a criterion with a goal for the message campaign and also the responses or results of executing the plurality of sets of input instructions. The winning path from among the plurality of paths is then upweighted. The message campaign then uses the upweighted winning path by causing a second plurality of electronic messages to be sent through the winning path to destination targets in the plurality of destination targets.

Abstract: Embodiments are directed toward analyzing images of cables and electronic devices to augment those images with information relating to the installation or troubleshooting of such cables and electronic devices. The images are analyzed to determine non-text characteristics of a connector of the cable and non-text characteristics of at least one port on the electronic device. These non-text characteristics can be compared to each other to determine if the connector is compatible with one of the ports on the electronic device. Similarly, these non-text characteristics can be compared with non-text characteristics of known connectors and ports to determine a type of the connector and a type of the ports on the electronic device, which is used to determine their compatibility. The images are then modified or overlaid with information identifying the type of connector or port, their compatibility or lack thereof, or instructions for connecting the compatible connector and port.

Abstract: An echo cancellation circuit is provided to reduce or eliminate the effects of a pre-echo signal that is part of a received multi-path signal. The circuit includes: a delay module, receiving an input signal and delaying the input signal to generate a plurality of delayed signals; a multiplication module, multiplying the plurality of delayed signals by a plurality of coefficients to generate a plurality of multiplication results, respectively; a summing circuit, performing a summation on the plurality of multiplication results to generate a summation signal; a subtraction circuit, receiving a first delay signal and generating a subtracted signal according to the first delayed signal and the summation signal; and a coefficient calculating circuit, calculating the plurality of coefficients according to the subtracted signal. The echo cancellation circuit outputs an output signal as the subtracted signal, with the pre-echo signal diminished or eliminated.

Abstract: A display apparatus that displays an image includes a connection unit that is connected to an external apparatus and receives an image signal and a control signal from the external apparatus, a display unit that displays an image based on the image signal received by the connection unit, and a control unit that performs reconnection action of causing the connection unit to enter a first state in which the control unit recognizes that the external apparatus has not been connected to the connection unit and then causing the connection unit to enter a second state in which the control unit recognizes that the external apparatus has been connected to the connection unit.

Abstract: A method for determining the magnitude of leakage in a subscriber's premises CATV installation; a frequency multiplexer for coupling between an antenna and a receiver for the multiplexed frequencies; and, a method for a technician to certify a CATV subscriber's premises for the provision of CATV services are disclosed.

Abstract: Technology for communicating Moving Picture Experts Group (MPEG)-2 streaming video quality information is disclosed. A network element can generate quality access units that are associated with one or more media access units in a media content stream representation. The quality access units can indicate quality metadata for the media access units in the media content stream representation. The network element can encapsulate the quality access units in an MPEG-2 transport stream (TS). The network element can generate a quality extension descriptor that describes the quality metadata indicated in the quality access units. The network element can communicate, to a user equipment (UE), the quality extension descriptor according to a defined periodicity. The network element can communicate, to the UE, the quality access units in the MPEG TS with the media access units, wherein the quality access units are interpreted at the UE based on the quality extension descriptor.

Abstract: A method for determining the magnitude of leakage in a subscriber's premises CATV installation; a frequency multiplexer for coupling between an antenna and a receiver for the multiplexed frequencies; and, a method for a technician to certify a CATV subscriber's premises for the provision of CATV services are disclosed.

Abstract: Embodiments are directed toward analyzing images of cables and electronic devices to augment those images with information relating to the installation or troubleshooting of such cables and electronic devices. The images are analyzed to determine non-text characteristics of a connector of the cable and non-text characteristics of at least one port on the electronic device. These non-text characteristics can be compared to each other to determine if the connector is compatible with one of the ports on the electronic device. Similarly, these non-text characteristics can be compared with non-text characteristics of known connectors and ports to determine a type of the connector and a type of the ports on the electronic device, which is used to determine their compatibility. The images are then modified or overlaid with information identifying the type of connector or port, their compatibility or lack thereof, or instructions for connecting the compatible connector and port.

Abstract: A tester system described herein enables a user (e.g., a field technician) to efficiently and conveniently upgrade, evaluate and troubleshoot customer premises networks and equipment. The tester system includes a dedicated tester device that is wirelessly coupled to a handheld device. In response to user input, the handheld device remotely controls the dedicated tester device to execute a testing routine to evaluate one or more customer premises wired and/or wireless networks.

Abstract: Methods and devices for determining scoring models of a three-dimensional animation scene frame are provided.

Abstract: Network signals in a broadcast network can include ancillary data as well as audio and visual of a media presentation. Typically, the ancillary data is not displayed by the television when outputting the audio and visual data although it may be in some cases. To ensure the network signal is compatible with the components in the broadcast network, the embodiments herein test the network signal use an emulated version of the broadcast network. For example, the content provider can set up a local version of broadcast network using the hardware components of the broadcast network (e.g., a cable head end, network modulators, set top boxes, receivers, etc.). By transmitting the network signal through the emulated broadcast network, the content provider can verify that the ancillary data will be correctly transmitted through the actual broadcast network.

Abstract: A system for testing multiple wireless routers independently and simultaneously using different types of device probes is disclosed. The system includes real-time, bi-directional/asynchronous communication and interaction between system components.

Abstract: A communication device includes: an inputter that inputs a USB (Universal Serial Bus) signal from an input device; an acquirer that acquires an EDID (Extended Display Identification Data) signal from a monitor; an instructor that gives an instruction to output the EDID signal to another communication device; a switch that selectively switches a first route for outputting the acquired EDID signal to the another communication device and a second route for outputting the inputted USB signal to the another communication device; and a controller that controls the switch so as to switch from the second route to the first route in accordance with the instruction from the instructor.

Abstract: Testing a video transmission system includes generating an optical signal and varying the colour by sweeping through a colour range. A first optical sensor captures the optical signal at intervals to generate frames. Transmitted frames are received by a second communication device. Received frames are provided to a display of the second communication device to reconstruct the frames. Colour information of frames displayed is obtained by a second optical sensor. Colour information of successive reconstructed frames is compared to determine deviation in capture rate of two successive frames of the first optical sensor, delay between capturing a frame by the first optical sensor and displaying the frame by the display, deviation in display rate of two successive frames displayed by the display and/or a loss of a frame. Audio information may be utilized in video and, conversational latency, synchronization between video and audio, and audio synchronization measurements.

Abstract: Techniques for delivering content are described that vary the bit rate with which the content is delivered to achieve a consistent level of quality from the user's perspective. This is achieved through the use of quality metrics associated with content fragments that guide decision making in selecting from among the different size fragments that are available for a given segment of the content. Fragment selection attempts to optimize quality within one or more constraints.

Abstract: A broadcast receiver includes a processor that processes a broadcasting signal, a detector that detects a level of a signal of a first predetermined band of the broadcasting signal, and an adjuster that adjusts at least one of a characteristic and an operation of the processor based on the detected level.

Abstract: A high definition multimedia interface (HDMI) test system including an HDMI test device that includes a display, a microcontroller, first and second input ports, an output port, a first cable connector, a second cable connector, and a third cable connector. The HDMI test device couples to an external device and receives an HDMI signal from the external device via the first cable connector. The microcontroller receives the HDMI signal from the first input port and converts the signal to a video signal, wherein the display displays an image associated with the video signal. The microcontroller transmits a test HDMI signal to the third cable connector, receives the test signal from the second cable connector and compares the test signal transmitted to the third cable connector and the test signal received from the second cable connector to determine continuity of an HDMI cable coupled with the second and third cable connectors.

Abstract: A device authentication server authenticates a remotely located device using data representing pixel irregularities of a display of the device. Since each display will deteriorate in a unique and randomized way, a unique mapping of pixel irregularities of a display of a device will be unique. By combining unique map of pixel irregularities of a display of the remotely located device, the device can be distinguished from similar devices when other attributes alone are insufficient to uniquely identify the device.

Abstract: A user station of a bus system includes: a counter for counting each message which is sent without error and/or each message which is received without error, the counter being incremented when a message is sent without error and/or a message is received without error, and a reset device for resetting the counter reading of the counter when the counter reading of the counter is read.

Abstract: There is provided a broadcast reception mobile terminal capable of improving both electric power saving and user-friendliness includes a broadcast reception mobile terminal that is constructed to be foldable as a result of a lid body arranged to be rotated with respect to a main body, and includes a main LCD panel (202a) on an inner surface side of the lid body and a sub LCD panel (202b) on an outer surface side of the lid body. A CPU (209) detects that the lid body is opened or closed by a signal from an opening/closing detection switch. In addition, the CPU (209) obtains from an earphone connector (203) information indicating whether or not an earphone is connected. In a case that the CPU (209) detects the lid body being closed during television viewing on the main LCD panel (202a), and performing a TVOFF process if the earphone is not connected, and stopping video display but continuing output of received audio if the earphone is connected.

Abstract: A highly predicable quality shared distributed memory process is achieved using less than predicable public and private internet protocol networks as the means for communications within the processing interconnect. An adaptive private network (APN) service provides the ability for the distributed memory process to communicate data via an APN conduit service, to use high throughput paths by bandwidth allocation to higher quality paths avoiding lower quality paths, to deliver reliability via fast retransmissions on single packet loss detection, to deliver reliability and timely communication through redundancy transmissions via duplicate transmissions on high a best path and on a most independent path from the best path, to lower latency via high resolution clock synchronized path monitoring and high latency path avoidance, to monitor packet loss and provide loss prone path avoidance, and to avoid congestion by use of high resolution clock synchronized enabled congestion monitoring and avoidance.

Abstract: Devices and methods for determining image quality using full-reference and non-reference techniques. Full reference image quality may be determined prior to output of an image or video frame from an image sensor processor by temporarily retaining image data from the image sensor and comparing processed image data of the image to the retained, non-processed image data of the same image. Full reference image quality determination may be assisted by a heuristic-based fault indicator. Image quality may also be determined by a non-reference technique of matching the image to one of various scenarios that are associated with sets of heuristics and applying the heuristics of the particular scenario to the image. Instead of relying on a nominal frame rate, video timing quality may be determined by comparing the capture time interval between successive video frames to the presentation time interval of the same video frames.

Abstract: A display apparatus and method for processing an image in a display apparatus are provided. The display apparatus includes a display unit, a receiving unit which receives a frame image including a first image and a second image and sync information of the frame image, a determination unit which determines whether the frame image is consistent with a reference pattern using the sync information, and an image processing unit which, if the frame image is inconsistent with the reference pattern, adjusts the frame image based on a level of inconsistency, and a controlling unit which controls the display unit to display the adjusted frame image.

Abstract: A method for assessing the quality of a transmitted video signal sequence at a receiver side includes: capturing the input video bit stream; extracting at least one feature or a set of features; determining the continuous probability of visibility for each packet loss event which occurred within a specific time interval; and employing the continuous probability of packet loss visibility as a weighting factor of the at least one feature or set of features extracted from the video bit stream to calculate an estimate of the overall quality, Q, of the transmitted video sequence.

Abstract: In some examples, the receiver apparatus includes a receiver interface configured to receive a signal from a transmitter and output an input sequence of M-bit samples. The apparatus may also include a quantizer circuit configured to convert the input sequence of M-bit samples into an output sequence of N-bit samples, wherein M and N are positive integer numbers, and wherein M is greater than N. The apparatus may further include a decoder circuit configured to decode the output sequence of N-bit samples.

Abstract: A relative quality score is provided that takes into account properties of an encoded version of a source video. For example, one such quality score calculates a difference of higher and lower quality transcoded versions of the source video, and computes quality metrics for each to evaluate how similar the transcoded versions are to the source video. A relative quality score quantifying the quality improvement of the high-quality version over the low-quality version is computed. The relative quality score is adjusted based on a measurement of the quality of the source video. If the relative quality score for the video indicates a sufficient quality improvement of the high-quality version over the low-quality version, various actions are taken, such as retaining the high-quality version, and making the high-quality version available to users, e.g. via a video viewing user interface.

Abstract: 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).

Abstract: A handheld leakage detector for finding digital signal leaks in a HFC network, comprises a radio receiver, a leakage receiver, leakage sampler, a correlator, and a display. The radio receiver receives samples of the digital signal taken from the HFC network, called “reference samples.” The leakage receiver receives a leakage signal, which is a leaked version of the digital signal from the HFC network. The leakage sampler samples the leakage signal to form leakage samples. The correlator performs a cross-correlation of the reference samples and the leakage samples, to produce a correlation function. An optimizable value is determined from the correlation function. The value generally becomes more optimized as the detector approaches the leak. The leak is sought by iteratively changing the position of the detector until the value becomes substantially optimized or the leak is found.

Abstract: 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.

Abstract: 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.

Abstract: The invention pertains to a method for operating an image-processing device in which an image signal on which a noise signal is superimposed is digitally transmitted between a transmitter and at least one receiver, and in which the image signal comprises a timed sequence of images, each containing its own image content and a noise pattern of the noise signal superimposed on the image content. At least certain areas of at least two successive images of the image signal are compared to each other after the transmission, and if a difference is found between the noise patterns contained in the images, it is concluded that the images have been transmitted successfully even if the image content of the images is identical. The invention also pertains to an image-processing device for the digital transmission of an image signal on which a noise signal is superimposed.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A system and method for detecting media source quality are provided. The system includes a data store comprising a computer readable medium storing a program of instructions for the detection of media source quality; a processor that executes the program of instructions; a video data receiver to receive video raw data, the video raw data corresponding to an uploaded and transcoded video; a video improver to apply a video improvement technique to the received video raw data to produce a modified version of the video raw data; and a video quality assessor to compare the received video raw data and the modified version of the video raw data, and based on the modified version of the video raw data improving on a factor associated with the video improvement technique, the video quality assessor indicates a phenomenon affecting the quality of the uploaded and transcoded video.

Abstract: A radio frequency front end for a television band receiver and spectrum sensor includes a low noise amplifier that amplifies a received signal output of a radio frequency antenna connected to the radio frequency front end, a pin diode attenuator circuit that selectively attenuates an output of the low noise amplifier, and a buffer amplifier that amplifies an output of the pin diode attenuator.

Abstract: 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.

Abstract: Disclosed is a method and tool that performs glass-to-glass testing of a test AV system. The test AV system may be a transmitter device that senses AV stimuli and transmits an AV signal to a receiver device that displays video and provides an audio out/speaker of the audio. A light source and a sound source may be placed at the transmitter device. A light sensor and microphone/direct audio out connection may be placed at the receiver device. The automatic test tool may cycle synchronized light/sound stimuli to the transmitter device and measure the delay/latency times for audio, video, and AV synchronization at the receiver device. The automatic test tool may be comprised of a computer running user interface/test management software connected to a low cost FPGA that controls the video/sound sources and sensors to accurately measure both video and audio glass-to-glass latency/synchronization in a continuous, automatic, and self-calibrating manner.

Abstract: 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.