For Digital Television Systems (epo) Patents (Class 348/E17.003)
  • Patent number: 10469408
    Abstract: A system for performing multi-level video processing within a vehicle includes a pre-processing module for determining an encoding mode and enabling one or more levels of encoding based on the encoding mode. The pre-processing module further receives a video stream from a camera attached to the vehicle via a vehicular communication network and encodes the video stream based on the encoding mode to produce a packet stream output. The system further includes a video decoder for receiving the packet stream output and decoding the packet stream output in accordance with the encoding mode to produce a decoded video output.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: November 5, 2019
    Inventors: Nariman Yousefi, Yongbum Kim, John Walley, Sherman (Xuemin) Chen, Wael W. Diab, Nicholas Ilyadis
  • Patent number: 10185884
    Abstract: A video quality assessment method may include frame-by-frame analysis of a test video sequence (often compressed) with its original (reference) counterpart, pre-conditioning elements of the test and reference frames, defining a region of interest in the pre-conditioned test frame and estimating relative errors within the region of interest between the test and reference frame, filtering the estimated errors of the region of interest temporally across adjacent frames within a perpetually relevant time window, aggregating the filtered errors within the time window, ranking the aggregated errors, selecting a subset of the ranked errors, aggregating across the selected subset of errors, and inputting said aggregated error to a quality assessment system to determine a quality classification along with an estimated quality assessment.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: January 22, 2019
    Assignee: APPLE INC.
    Inventors: Krasimir D. Kolarov, Bjorn S. Hori, Rahul Gopalan, Steven E. Saunders
  • Patent number: 10079778
    Abstract: A technique for allowing customers to control a video network. A network controller receives a request from an end user for a video connection between a first port and a second port. The request may specify at least a start time, an end time, the first port and the second port. A plurality of available routes between the first port and the second port may be analyzed to determine at least one selected route that will be used to connect the first port and the second port. A first command may be sent to automatically connect the first port and the second port via the at least one selected route at the start time. While in progress, the video connection may be modified according to system availability. Customers may have a view of all requests that have been made, completed or reserved for in the future.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: September 18, 2018
    Assignee: The Switch Enterprises, LLC
    Inventors: Scott Beers, David Anderson, Bruce Anderson, Howard Miller
  • Patent number: 9986234
    Abstract: One feature pertains to an apparatus that includes a first communication interface, a second communication interface adapted to transmit and/or receive multimedia data signals to and/or from a device through a wired connection, and a memory circuit adapted to store instructions for conducting one or more wired connection integrity tests. The wired connection integrity tests determine at least whether the apparatus is able to communicate with the device. The apparatus further includes a processing circuit adapted to initiate the one or more wired connection integrity tests by executing the instructions stored in the memory circuit, determine whether each of the one or more wired connection integrity tests initiated passed or failed, and report whether the one or more wired connection integrity tests passed or failed. The wired connection integrity tests may include signal line communication tests, cable integrity and quality tests, and data or video test pattern tests.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: May 29, 2018
    Assignee: Black Diamond Video, Inc.
    Inventor: Edward Priest
  • Patent number: 9762377
    Abstract: Systems and methods presented herein provide for improved duplex communications in an RF cable network comprising a plurality of CMs. In one embodiment, a system includes a CMTS operable to transmit downstream communications to the CMs and to process upstream communications from the CMs. The system also includes a duplex RF communication path between the CMTS and the CMs. The CMTS is further operable to transmit a control signal that directs a first of the CMs to transmit, to direct the remaining CMs to receive the transmission from the first CM, to direct the CMs to report received power levels of the transmission from the first CM, and to calculate RF isolations of the remaining CMs with respect to the first CM based on the reported power levels.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: September 12, 2017
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Belal Hamzeh, Thomas H. Williams, Daniel Rice, Luis Alberto Campos
  • Patent number: 9715641
    Abstract: A highlight learning technique is provided to detect and identify highlights in sports videos. A set of event models are calculated from low-level frame information of the sports videos to identify recurring events within the videos. The event models are used to characterize videos by detecting events within the videos and using the detected events to generate an event vector. The event vector is used to train a classifier to identify the videos as highlight or non-highlight.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: July 25, 2017
    Assignee: Google Inc.
    Inventors: Vivek Kwatra, Ullas Gargi, Mehmet Emre Sargin, Henry Hao Tang
  • Patent number: 9576608
    Abstract: In one embodiment, an apparatus may include a processor circuit and a keyframe indexing module that is operative on the processor circuit to map sensor data from a first sensor to a set of video data, where the sensor data and video data correspond to an event. The keyframe indexing module may be further operative on the processor circuit to identify one or more key portions of the set of sensor data, index the one or more key portions to respective mapped one or more video frames of the video data, and generate a first keyframe index to identify the one or more video frames.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: February 21, 2017
    Inventors: Daniel Avrahami, Jered H. Wikander
  • Patent number: 9491646
    Abstract: A measuring device for measuring a signal with a first component signal and at least one second component signal comprises a high-frequency processing device, which is embodied to mix the signal in order to form an intermediate-frequency signal and to digitize the latter in order to form a digital composite signal. The measuring device further comprises a digital mixer, which is embodied to generate a first digital composite test signal and a second digital composite test signal subject to a displacement of the frequency of the digital composite signal. Moreover, the measuring device comprises a digital filter, which is embodied to filter the first digital composite test signal in order to form a first digital test signal and to filter the second digital composite test signal in order to form a second digital test signal.
    Type: Grant
    Filed: June 5, 2012
    Date of Patent: November 8, 2016
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventors: Jens Franke, Florian Lang, Michael Simon, Bjoern Coenen, Markus Niedl, Ronald Tonn, Johannes Steffens
  • Patent number: 9330101
    Abstract: A processor that processes encoded media is configured so as to apply constraints to the encoded bitstream. Such constraints are not those required by a specification of a standard with which the encoded media is compliant; instead such constraints reflect portions of the standard that are insufficiently constrained and are applied by the processor to ensure that the processor does not experience performance degradation or errors. The constraints can be applied, for example, as a preprocessing step before reading, writing or decoding the bitstream, or while the bitstream is being decoded, or while the bitstream is being received from a transmission.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: May 3, 2016
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Sandeep Kanumuri, Shyam Sadhwani
  • Publication number: 20140036092
    Abstract: An automatic process for calibrating the optical image exposure value to compensate for changes in machine vision systems to maintain optimal exposure of captured images and adjust for the different characteristics among cameras components, such as imaging sensor sensitivity, LED strength, external lighting, reflective functions of any background material, different external lighting conditions, possible changes or updates of the systems over the years, such as LED changes, and even the aging of camera sensor and LEDs over time. A series of images of a target are captured with a predetermined sequence of exposure values, the saturation exposure percentage of a region of interest is calculated in each of the images, and the saturation exposure percentages are compared to determine the exposure value that has a saturation exposure percentage that varies the least from the saturation exposure value of the preceding and following exposure values.
    Type: Application
    Filed: July 31, 2012
    Publication date: February 6, 2014
    Applicant: JADAK, LLC
    Inventors: Mo Chen, Chun Jia
  • Publication number: 20140002673
    Abstract: Optical characteristics of an optical component for a high volume manufacture consumer electronics device can be tested using a test chart composed of a superposition of two or more groups of parallel line pairs, wherein all the groups of parallel line pairs are oriented at a different inclination. The groups of line pairs could be oriented so that they are perpendicular to each other. A test system can quickly and objectively assess for example the sharpness of the optical component in different directions across a full image field of view of an imaging system that is capturing a digital image of the chart using the optical component for through-the-lens imaging. Other embodiments are also described and claimed.
    Type: Application
    Filed: September 28, 2012
    Publication date: January 2, 2014
    Applicant: Apple Inc.
    Inventors: Fei Wu, Mark N. Gamadia, Shizhe Shen
  • Publication number: 20120287287
    Abstract: A system for determining one or more camera calibration parameters is disclosed. The system comprises a processor and a memory. The processor is configured to: a) provide a first pattern for display on a display screen; b) receive a first image from a camera viewing the display screen; c) provide a second pattern for display on the display screen; and d) receive a second image from the camera viewing the display screen. The relative position of the display screen and the camera are the same as when the first image was captured using the camera. The processor is further configured to determine an image location which is a projection of a known physical location on the display screen by using at least in part a first feature identified in the first image and a second feature identified in the second image and determine one or more calibration parameters based at least in part on the determined image location. The memory is coupled to the processor and configured to provide the processor with instructions.
    Type: Application
    Filed: May 11, 2011
    Publication date: November 15, 2012
    Applicant: TYZX, INC.
    Inventors: Etienne Grossmann, John Iselin Woodfill, Gaile Gibson Gordon
  • Publication number: 20120287289
    Abstract: Systems and methods are disclosed to perform automated audio visual (AV) delay measurement for a system under test (SUT) by generating a dynamic AV test pattern to drive a source display device and one or more destination video display devices; detecting video output through at least one light sensor coupled to the one or more destination video display devices; digitizing the light sensor output; and performing multi-channel delay parameters analysis.
    Type: Application
    Filed: May 15, 2011
    Publication date: November 15, 2012
    Inventors: Victor Steinberg, Michael Shinsky
  • Publication number: 20120287288
    Abstract: A system to perform automated audio visual (AV) delay measurement for a system under test (SUT) includes a test pattern generator to generate a dynamic AV test pattern and connected to a source display device and to one or more destination video display devices; at least one light sensor coupled to the one or more destination video display devices; an AV capture device having video inputs connected to the light sensors; and an AV delay analyzer coupled to the AV capture device to perform multi-channel delay parameters analysis.
    Type: Application
    Filed: May 15, 2011
    Publication date: November 15, 2012
    Inventors: Victor Steinberg, Michael Shinsky
  • Publication number: 20120229653
    Abstract: 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.
    Type: Application
    Filed: January 20, 2012
    Publication date: September 13, 2012
    Applicant: Sunplus Technology Co., Ltd.
    Inventors: Chen-Yung Lien, Ming-Chang Lin
  • Publication number: 20120120254
    Abstract: According to one embodiment, video data from a video transmitter (110) is received (420) at a network buffer (130). Information that pertains to a network buffer drain rate (14) of the network buffer (1q3) is monitored (430). The network buffer drain rate (140) is a rate that the video data is removed from the network buffer (130). The network buffer drain rate (140) is estimated (440) based on the monitored information. A transmission rate (120) that the video transmitter (110) transmits future video data is adjusted (450) to not exceed an allowed transmission rate (ATR) that is calculated based on the estimation of the network buffer drain rate (140).
    Type: Application
    Filed: August 31, 2009
    Publication date: May 17, 2012
    Inventors: Wai-Tian Tan, Andrew J. Patti
  • Publication number: 20120113269
    Abstract: 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.
    Type: Application
    Filed: March 24, 2010
    Publication date: May 10, 2012
    Applicant: Strategy & Technology Limited
    Inventor: Nicholas Birch
  • Publication number: 20120086813
    Abstract: 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.
    Type: Application
    Filed: September 9, 2011
    Publication date: April 12, 2012
    Inventors: Mark Fimoff, Khanh Lam, Dennis Mutzabaugh, David Ritter, Greg Tomezak
  • Publication number: 20120050541
    Abstract: Presented is a system and method for testing a digital video distribution environment. A digital video signal generator transmits a reference video bit stream to a distribution path. A digital video signal analyzer receives a test video bit stream from the distribution path. The digital video signal analyzer generates a diagnostic video bit stream as a function of the reference video bit stream and the test video bit stream.
    Type: Application
    Filed: August 24, 2010
    Publication date: March 1, 2012
    Applicant: Crestron Electronics, Inc.
    Inventor: Adolfo Velasco
  • Publication number: 20120013748
    Abstract: 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.
    Type: Application
    Filed: September 23, 2011
    Publication date: January 19, 2012
    Inventors: Kenneth Stanwood, David Gell, Yiliang Bao
  • Publication number: 20110249127
    Abstract: 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.
    Type: Application
    Filed: April 7, 2010
    Publication date: October 13, 2011
    Inventors: Rui Zhang, Jim Chen Chou, Tapabrata Biswas
  • Publication number: 20110234814
    Abstract: To provide a video display apparatus and an afterimage correcting method for solving the problem of image quality degradation. Removing unit 2 removes DC components from the video signal received by input terminal 1. Integrating unit 3 integrates the video signal with DC components removed by removing unit 2 to generate an integration signal. Subtracting unit 4 subtracts the integration signal generated by integrating unit 3, from the video signal received by input terminal 1.
    Type: Application
    Filed: December 25, 2008
    Publication date: September 29, 2011
    Inventor: Michio Kobayashi
  • Publication number: 20110199490
    Abstract: Embodiments according to the present application can provide hand held portable diagnostic tools and methods for using the same that can terminate a user port in a coaxial cable system to detect whether a digital service marker indicating that fiber optic digital CATV service is present. Embodiments of a hand held portable tool and methods for using the same can include a connector attached at one end of a housing to pass a downstream signal from a coupled user-side coaxial cable port, and a power detector. The detector includes a first filter to pass a selected bandwidth and a rectifying power detector circuit to detect RF power in the selected bandwidth indicative of the digital service marker. Upon detection of the digital service marker, an indicator in the hand held portable diagnostic tools provides detectable or visual results to the user.
    Type: Application
    Filed: February 18, 2010
    Publication date: August 18, 2011
    Applicant: John Mezzalingua Associates, Inc.
    Inventors: Steven K. Shafer, Raymond Palinkas, Erdogan Alkan
  • Publication number: 20110169966
    Abstract: There is provided a method of measuring delay variation between first and second elementary streams in a digital audiovisual data stream, comprising detecting and storing digital audiovisual data stream timestamp values, detecting and storing elementary stream timestamp values for the first and second elementary streams, interpolating the digital audiovisual data stream timestamp values and elementary stream timestamp values to form data sets having mutual sampling points, and subtracting the interpolated data set for the first elementary data stream from the interpolated data set for the second elementary data stream to form elementary stream difference values indicative of changes in delay over time between first and second elementary streams.
    Type: Application
    Filed: October 27, 2010
    Publication date: July 14, 2011
  • Publication number: 20110102602
    Abstract: There is disclosed a method, device, and system for verifying a video path between a source device and a destination device. The destination device may receive a video signal including at least one video test pattern from the source device via a network. The destination device may automatically judge that a video path exists if the received video signal meets at least one predetermined criteria.
    Type: Application
    Filed: October 29, 2009
    Publication date: May 5, 2011
    Inventors: Lucian Leventu, Razvan Stan
  • Publication number: 20100259625
    Abstract: Provided is an image quality evaluation system for evaluating quality of an image. The image quality evaluation system includes bit extraction means and image quality evaluation means. For predetermined data expressing an image frame of a first image, the bit extraction means extracts a predetermined number of bits which is smaller than the number of bits required for expressing one data piece. By using a value expressed by the bit string extracted by the bit extraction means and a value of data equivalent to the data to be extracted from the bit string in a second image, the image quality evaluation means estimates a difference between the first image and the second image and evaluates the image quality of the first to image or the second image.
    Type: Application
    Filed: December 8, 2008
    Publication date: October 14, 2010
    Inventor: Toru Yamada
  • Publication number: 20100253785
    Abstract: 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.
    Type: Application
    Filed: March 29, 2007
    Publication date: October 7, 2010
    Applicant: EchoStar Satellite LLC
    Inventors: David A. Kummer, Michael T. Dugan, Kranti K. Kilaru
  • Patent number: 7769198
    Abstract: Presented herein are video decoding system(s), method(s), and apparatus for repeating a last line to a scalar or compositor or capture. A first parameter is provided to a first register indicating that a picture comprises a first number of lines, and a second parameter is provided to a second register, indicating that the picture comprises a second number of lines.
    Type: Grant
    Filed: January 9, 2004
    Date of Patent: August 3, 2010
    Assignee: Broadcom Corporation
    Inventors: Mallinath Hatti, Lakshmanan Ramakrishnan
  • Publication number: 20100053340
    Abstract: To solve the problems in the prior art, the present invention provides a method for measuring a time difference between digital video signals and digital audio signals, wherein said method comprises the steps of extracting respective time series data from respective frequency domains of said digital video signals and said digital audio signals; statistically identifying the cross-correlation of said time series data in said frequency domains, thereby measuring the time difference between said digital video signals and said digital audio signals.
    Type: Application
    Filed: October 6, 2006
    Publication date: March 4, 2010
    Inventors: Hiroaki Ikeda, Reiko Iwai
  • Publication number: 20090244290
    Abstract: A system for monitoring, troubleshooting, controlling, calibrating and/or configuring a digital television is provided. The system includes a functionality module configured to perform one or more functions of a digital television. The system includes a testing module associated with the digital television, communicatively coupled to the functionality module and being configured to receive from the functionality module, data indicative of the one or more functions of the digital television. The testing module is configured to perform processing using the received data to determine whether to alter one or more parameters associated with the one or more functions of the digital television.
    Type: Application
    Filed: March 31, 2008
    Publication date: October 1, 2009
    Applicant: Verizon Services Corp.
    Inventors: Henry A. McKelvey, Rosa M. Underwood, Umang A. Patel
  • Publication number: 20090207309
    Abstract: A digital television signal-receiving device with signal strength showing function is disclosed. The digital television signal-receiving device includes a tuner, a microprocessor control unit, and a signal strength indicator. The signal of digital television is tuned with the tuner. The microprocessor control unit could read a signal decibel value of the signal of digital television and provide a strength signal corresponding to the signal decibel value. The signal strength indicator driven with the microprocessor control unit could receive the strength signal and show an indication of the signal strength.
    Type: Application
    Filed: June 26, 2008
    Publication date: August 20, 2009
    Inventors: Chien-Ming Yeh, Chien-Chung Chiang, Neng-Chia Lee, Hong-Wei Liu
  • Publication number: 20090086028
    Abstract: A method and apparatus are provided for testing susceptibility of a receiver to intermodulation distortion of a digital channel, the method including selecting a first digital channel from channels in a composite signal, determining a first power measurement from the first digital channel, determining a total power measurement from other channels in the composite signal, and determining susceptibility of the first digital channel to intermodulation distortion by comparing the first power measurement and the total power measurement with intermodulation distortion characteristics of the receiver.
    Type: Application
    Filed: September 30, 2008
    Publication date: April 2, 2009
    Applicant: ACTERNA LLC
    Inventors: Walter MILLER, Pingnan SHI, Reena RAMNAME, Gregory W. MASSEY
  • Publication number: 20080297655
    Abstract: A television receiving apparatus has: a storage unit storing identification information, which identifies devices outputting image signals; a display control unit displaying a device selection screen for selecting a device to output an image signal based on the stored identification information; a confirmation unit confirming whether the device is in an active state or a standby state; and a transmitter transmitting a command, which instructs the selected device to output the image signal, when it is confirmed that the selected device is in an active state.
    Type: Application
    Filed: March 21, 2008
    Publication date: December 4, 2008
    Inventor: Masahiro KAMIDA
  • Publication number: 20080231711
    Abstract: 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.
    Type: Application
    Filed: March 18, 2008
    Publication date: September 25, 2008
    Applicant: ATI Technologies ULC
    Inventors: David Glen, Betty Luk
  • Publication number: 20080143837
    Abstract: A video quality objective assessment device includes a temporal/spatial feature amount derivation unit (12) which derives a temporal/spatial feature amount (PC) which is the feature amount of deterioration which has occurred in a deteriorated video signal (PI), from the deteriorated video signal (PI) to be assessed and a reference video signal (RI) which is a signal before deterioration of the deteriorated video signal, and a subjective quality estimation unit (14) which weights the temporal/spatial feature amount (PC) according to the relationship between the deteriorated video obtained in advance and the user subjective assessment value, thereby estimating the subjective quality (Y) of the deteriorated video signal (PI). Thus, it is possible to estimate a video subjective quality even when deterioration occurs locally in the video in the temporal/spatial direction.
    Type: Application
    Filed: October 17, 2005
    Publication date: June 19, 2008
    Inventors: Jun Okamoto, Takaaki Kurita