Test Signal Generator Patents (Class 348/181)
  • Patent number: 10531056
    Abstract: A projector, a projecting system and a transmission delay detection method thereof are provided. The projector includes an image processor and a delay calculator. The image processor, in a test mode, receives a first test image signal through an input end during a first time period, generates a first processed image signal through an output end, receives a second test image signal through the input end during a second time period, and generates a second processed image signal through the output end. The delay calculator detects a first time point at which the input end of the image processor receiving the first test image signal and a second time point at which a signal on the output end of the signal processor to translate from the first processed image signal to the second processed signal, and generates a first transmission delay according to the first and second time points.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: January 7, 2020
    Assignee: Coretronic Corporation
    Inventors: Jian-Jiun Wu, Chih-Hsun Peng
  • Patent number: 10516881
    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.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: December 24, 2019
    Assignee: Unify GmbH & Co. KG
    Inventors: Bizhan Karimi-Cherkandi, Farrokh Mohammadzadeh Kouchri, Schah Walli Ali, Thomas Nagel
  • Patent number: 10390009
    Abstract: An adaptive display calibration system includes a display, a photodetector configured to capture light emitted by the display, and a set-top box connected to the display and the photodetector. The set-top box includes processing circuitry configured to transmit one or more test patterns to the display, and receive one or more measurements of the display from the photodetector in response to the test patterns. Additionally, the processing circuitry of the set-top box determines a capability of the display based on the measurements received from the photodetector and programs the set-top box based on the capability of the display.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: August 20, 2019
    Assignee: Avago Technologies International Sales Pte. Limited
    Inventors: Peisong Chen, Richard Hayden Wyman, Gheorghe Berbecel, Frederick George Walls, David C. Wu, Wade Keith Wan
  • Patent number: 10365879
    Abstract: The present invention relates to an image output device having an image quality adjustment function. A method for controlling a mobile terminal so as to control the image quality of a plurality of image output devices according to an embodiment of the present invention comprises the steps of: generating a preview image on the basis of images corresponding to the plurality of image output devices, received through a camera, and extracting image quality information of the plurality of image output devices using the images corresponding to the plurality of image output devices, included in the preview image; and transmitting the extracted image quality information or image quality correction data corresponding to the image quality information to at least one image output device, the image quality of which is to be adjusted, among the plurality of image output devices.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: July 30, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Jihye Lee, Jinyeong Byeon, Seonghwan Kim, Youngsoo Park, Jieun Jung, Aryun Kim, Bongsu Lee, Chala Park
  • Patent number: 10353660
    Abstract: Image display system 10 comprises: a plurality of display devices 111; an image processing unit for receiving input of a plurality of input video signals and generating an output video signal for each display device in accordance with a layout for the display devices from the input video signals; a pattern signal generation unit for generating pattern signals indicating a plurality of different test pattern images; a selector for receiving input of the output video signals and the pattern signals and selecting and outputting either the output video signals or the pattern signals; imaging device 120 for capturing an image of the test pattern images displayed on the respective display devices; and a control device 140 for analyzing the captured image captured by the imaging device and generating control information for controlling the image processing unit, based on analysis results.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: July 16, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Ryoji Okubo, Ken Mashitani, Masaru Sekizawa, Takaaki Abe, Kazuma Tani
  • Patent number: 10284257
    Abstract: Non-disruptive sweep measurements using low power coherent signals overcome the limitations of prior art frequency response systems for cable networks. Modulated or unmodulated, e.g. continuous wave (CW), test signals are transmitted into the network at a first or input point (input point is in the head end for forward sweep; input point is in the field for reverse sweep). The test signals are transmitted continuously at multiple frequencies, so as a composite they form a wideband, OFDM-like (orthogonal frequency-division multiplexing) waveform. A receiver at a second or output point generates power reading measurements, from which the frequency response of the network is produced.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: May 7, 2019
    Assignee: VIAVI SOLUTIONS INC.
    Inventors: Ben Maxson, Koji Okamoto
  • Patent number: 10257481
    Abstract: The disclosure relates to the field of electronic devices and particularly to a method and device for adjusting a projected image so as to adjust the problem of time-consuming and inaccurate manual adjustment of the image in the existing method for adjusting a projected image. The method according to an embodiment of the disclosure includes: transmitting, by a projection device, to each zone in a projection range, positional information corresponding to the zone; receiving, by the projection device, position identifiers, transmitted by recognition devices located in space round a projection screen, the position identifiers determined by the recognition devices according to the positional information transmitted by the projection device; and adjusting, by the projection device, the projection range according to the position identifiers transmitted by the recognition devices.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: April 9, 2019
    Assignees: Hisense Co., Ltd., Hisense USA Corporation, Hisense International Co., Ltd.
    Inventor: Jie Liu
  • Patent number: 10097819
    Abstract: The present invention provides a testing system for a video and audio reproduction system, the testing system comprising a data source, comprising video and audio data for reproduction by the video and audio reproduction system, the video and audio data comprising unique marks in every video frame and every audio frame, a recording unit, configured to record a video stream and an audio stream generated by the video and audio reproduction system based on the video and audio data, and a test processor, configured to extract the unique marks from the recorded video stream and the recorded audio stream, and to verify if respective unique marks of simultaneous video frames and audio frames have been recorded by the recording unit simultaneously. Furthermore, the present invention provides a testing method, a computer program product, and a non-transitory computer readable data carrier.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: October 9, 2018
    Assignee: ROHDE & SCHWARZ GMBH & CO. KG
    Inventors: Felix Aumer, Rajashekar Durai, Gerson Bacor, Chun Guan Tay, Fernando Schmitt, Christoph Nufer
  • Patent number: 9854233
    Abstract: An apparatus for processing a video, a method of driving the apparatus for processing the video, and a computer readable recording medium are provided. The apparatus includes a storage unit configured to store a plurality of set values corresponding to at least one factor used for a quality measurement of a communication signal line, and a controller configured to transmit a plurality of test signals respectively corresponding to the plurality of set values to a signal receiver connected to the communication signal line and receive a plurality of regression signals respectively corresponding to the plurality of transmitted test signals from the signal receiver. The controller determines a set value of the factor based on the plurality of received regression signals and transmits a signal to the signal receiver based on the determined set value of the factor.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: December 26, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Kang-young Won
  • Patent number: 9760981
    Abstract: An image processing part includes an edge enhancing part, an artifact detecting part and a compensating part. The edge enhancing part emphasizes an edge portion of an object in input image data. The artifact detecting part detects a corner outlier artifact at an area adjacent to the edge portion of the object. The compensating part compensates the corner outlier artifact. Accordingly, the edge portion of the object may be enhanced and the corner outlier artifact is decreased so that the display quality may be improved.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: September 12, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Mun-San Park, Cheol-Woo Park, Yun-Ki Baek, Kyoung-Ju Shin, Tadashi Amino
  • Patent number: 9756387
    Abstract: The systems and methods discussed herein are directed to presence detection of portable devices of audience measurement panel members, and include a first audience measurement device in proximity to a media device, and a second audience measurement device in the form of a remote control for controlling the media device. The second audience measurement device may receive broadcast identification codes from the portable device of a panel member, and may transmit indicators of received signal strength to the first audience measurement device. The first audience measurement device may similar measure received broadcast signal strength from the portable device, and compare the local measurement and remote measurement to thresholds to determine whether the panel member's portable device is likely in proximity, and thus that the panel member is likely consuming media from the media device.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: September 5, 2017
    Assignee: Google Inc.
    Inventor: Simon Michael Rowe
  • Patent number: 9723303
    Abstract: Embodiments of the invention are directed to a system for generating video test pattern signals from definitions contained in a text-based definition file. The definition file allows the user to create generic definitions for test signals that can be interpreted to create test signals in a variety of formats, raster sizes, color spaces, sample structures, frame modes, and bit depths. A parametric generator uses one or more engines to then generate the desired test pattern from the definition file.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: August 1, 2017
    Assignee: TEKTRONIX, INC.
    Inventors: Thomas E. Chabreck, Benjamin T. Humble, Michael S. Overton, Robert W. Parish
  • Patent number: 9591371
    Abstract: Test patterns and associated techniques for testing the fidelity of color processing are disclosed. One set of embodiments provide a test pattern that exhibits a large number of spatial interactions (e.g., edges) between colors corresponding to triples of constant value RGB primaries that incorporate a specific primary. Another set of embodiments provide an animated sequence of test patterns that exhibit temporal interactions between the colors identified above. Yet another set of embodiments provide a test pattern comprising a plurality of zones, where distinct subsets of the zones are configured to exhibit independent visual changes in response to adjustments of specific color processing controls. Using these test patterns, users may more easily test the fidelity of color processing (such as color dematrixing), and may more easily calibrate color processing controls accordingly.
    Type: Grant
    Filed: October 25, 2007
    Date of Patent: March 7, 2017
    Assignee: PIXAR
    Inventors: Rick Sayre, Rod Bogart
  • Patent number: 9542732
    Abstract: The present disclosure provides a multi-stage image mapping mechanism for mapping a distorted image to a rectified image. For example, the multi-stage image mapping mechanism can remove homography from a distorted image to reconstruct a rectified image in two-stages: (1) a first stage in which distortion is partially removed from a distorted image to generate an intermediate image, and (2) a second stage in which residual distortion is removed from the intermediate image to recover the rectified image.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: January 10, 2017
    Assignee: Cognex Corporation
    Inventor: Nathaniel Bogan
  • Patent number: 9514709
    Abstract: Methods of correcting gamma and a display device employing the same are disclosed. In one aspect, the method includes periodically measuring, at a plurality of predetermined times, a single color measurement luminance related to a single color component that is displayed on the display panel. The method further includes calculating a luminance difference between the single color measurement luminance and a single color target luminance. The single color target luminance is a target luminance of the single color component at each of the predetermined times. The method also includes changing a gamma setting for a plurality of data signals provided to the display panel based on the luminance difference.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: December 6, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventor: Si-Beak Pyo
  • Patent number: 9445086
    Abstract: A method at a system having a virtual image generation device includes: receiving an image capture device; generating, using the virtual image generation device, a plurality of test images in accordance with a test sequence, where each test image corresponds to a respective focal distance with respect to the image capture device; obtaining test data corresponding to respective captures of the test images by the image capture device; and providing the test data.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: September 13, 2016
    Assignee: FACEBOOK, INC.
    Inventor: Shizhe Shen
  • Patent number: 9401129
    Abstract: An image projection device includes: a drive controller that causes generation of light of a specified color tone by a combination of light to be transmitted by a liquid crystal panel to project image data onto a projection plane; an image capturing controller that receives a synchronization signal that specifies a period in which the liquid crystal panel does not transmit light from the drive controller and causes capturing of an image of the projection plane according to the period that is specified by the synchronization signal; an illuminated image detector that detects, from the captured image of the image data, an illuminated image that is illuminated by an illuminating device on the projection plane; and an illuminated image generator that generates projection image data obtained by combining given image data in a position in which the illuminated image is detected.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: July 26, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Otoichi Nakata, Fumihiro Nakashige, Shinichi Sumiyoshi
  • Patent number: 9349153
    Abstract: The disclosure relates generally to improving readability of machine-readable information, despite signal capture distortion. One claim recites a method comprising: obtaining input data, the input data representing imagery or video, the input data comprising test data and a machine-readable signal; determining characteristics associated with the test data to determine information regarding signal capture distortion of the input data; based on at least the characteristics, determining an amount of correction or counteracting to be applied to the input data; using a programmed processor, applying a determined amount of correction or counteracting to the input data; and analyzing corrected or counteracted input data to obtain the machine-readable signal. Of course, other claims and combinations are provided as well.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: May 24, 2016
    Assignee: Digimarc Corporation
    Inventor: Alastair M. Reed
  • Patent number: 9247182
    Abstract: Embodiments of the present invention relate to a method of obtaining through a computing cloud, parameters of a digital video. The method further includes modifying by software generators of the computing cloud, one or more of the obtained parameters, such that the modification is based on information relating to segments of the users of the network. The method includes creating by rendering engines of the computing cloud a plurality of versions of the digital video. Each one of the plurality of versions comprises a digital video adapted to appeal to at least one of the segments of the users of the network. Further, the method includes determining a quality of at least one of the plurality of versions of the digital video, as well, as determining whether the at least one of the plurality of versions is viewable to the users of the network based on the determined quality.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: January 26, 2016
    Assignee: Eyeview, Inc.
    Inventors: Gal Barnea, Maxim Vexler
  • Patent number: 9236027
    Abstract: The present invention provides a display system capable of efficiently calibrating image content even when the image is displayed and thereby capable of reducing the time and cost required for calibration, and also provides a computer-readable recording medium. The control device thereof processes an image to be displayed on a display section beforehand so as to be usable for calibration. While the image is actually being displayed on the display section, the control device captures an image displayed on the display section using a capturing device at the timing at which a calibration image is displayed, compares the luminance or color in the calibration image with the luminance or color in the image obtained by capturing the calibration image, and creates correction information for correcting an image signal to be output to the display section on the basis of the result of the comparison.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: January 12, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Hiroshi Ishida
  • Patent number: 9229445
    Abstract: A mobility building product traceability system and a production line controlling method are used to set product information and to test quality of each product. The product traceability system includes a mobile electronics device used by an inspector and an ID (Identification) confirmation code inputted by the inspector. A storing unit is built in the mobile electronics device and has feature standards related to products built therein. At least one imaging apparatus is built in the mobile electronics device and applied to scan product serial number barcodes, product features, and two-dimensional barcodes associated with the products to receive, record or read production and test information of the products, and then store the production and test information in the storing unit.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: January 5, 2016
    Assignee: Roland Taiwan Electronic Music Corp.
    Inventor: Uei-Jong Shaw
  • Patent number: 9232201
    Abstract: The color of a projected image is dynamically corrected by sensing the color of the surface onto which the image is projected before the image is projected, and/or sensing the color of the surface between frames of the projected image, and/or by sensing the projected image as it is displayed on the surface and comparing what is sensed to the original image. Corrections to the color of the projected image are then made based on the sensed information from the surface onto which the image is projected.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: January 5, 2016
    Assignee: Lenovo (Singapore) Pte. Ltd.
    Inventors: John Weldon Nicholson, Howard Jeffrey Locker, Aaron Michael Stewart, Michaela Rose Case
  • Publication number: 20150103186
    Abstract: A testing system and a method thereof are provided. The testing system includes an audio/video playback apparatus and a testing apparatus. The audio/video playback apparatus is configured to receive an audio/video signal, and analyze the audio/video signal to generate a signal analysis result and a processed audio/video signal. The processed audio/video signal is configured to be displayed on a screen of the audio/video playback apparatus. The testing apparatus includes a switching module and a determining unit. The switching module controls at least one audio/video transmission interface of the audio/video playback apparatus, so as to select and transmit the corresponding audio/video signal to the audio/video playback apparatus.
    Type: Application
    Filed: January 16, 2014
    Publication date: April 16, 2015
    Applicant: Wistron Corporation
    Inventor: Yang Zhou
  • Patent number: 9001213
    Abstract: A video signal waveform monitor is shown, which receives an input video signal composed of video lines. A video signal digitizer samples the input video signal at video sample points to generate a sequence of video pixel data, which is written into an acquisition framestore is organized into a video pixel array so as to represent a raster of the input video signal. A level analyzer reads the video pixel data row-by-row from segments of the video pixel array and increments video level data at addresses in cache memory in response to the serially-read video pixel data. This generates a sequence of video level data, which is written into an output framestore and which represents the level of the waveform of the input video signal. The segments of the video pixel array comprise at least one and less than all of the columns in the video pixel array.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: April 7, 2015
    Assignee: Phabrix Limited
    Inventors: Phillip Adams, Barry Donald Ruberry Miles
  • Patent number: 8988495
    Abstract: A method for controlling an image display apparatus includes determining a type of a video signal included in an input signal, determining whether three-dimensional (3D) format information is included in the input signal, if the video signal is a 3D video signal, requesting 3D format information about the video signal to a server that stores 3D format information, if the input signal does not include the 3D format information about the video signal, and processing, upon receipt of 3D format information from the server in response to the 3D format information request, the video signal according to the 3D format information and displaying a 3D image based on the processed video signal.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: March 24, 2015
    Assignee: LG Eletronics Inc.
    Inventor: Jeongsim Kim
  • Publication number: 20150077571
    Abstract: Apparatus for evaluating optical components and systems that uses a precision compact mirror support structure to present to an optical system or electro-optical system (e.g., a camera) multiple images of at least one optical evaluation target over a wide field to allow assessment of the performance or alignment of the optical or electro-optical system over its intended field of use. The mirror support structure generates multiple images of an optical evaluation target by providing multiple folded optical paths between the target and the desired field locations of the test optic. The mirrors employed may either be parallel or at angles with respect to one another.
    Type: Application
    Filed: July 24, 2014
    Publication date: March 19, 2015
    Inventors: STEPHEN D FANTONE, DANIEL ORBAND, DAVID PAUL BISS
  • Patent number: 8976250
    Abstract: A lens testing system may have a test pattern source that generates a test pattern of light. A lens may have a lens surface that reflects the test pattern of light. A digital camera system may capture an image of the reflected test pattern of light. Computing equipment may perform image processing operations to evaluate the captured image of the reflected test pattern. The test pattern may contain a known pattern of test elements such as a rectangular array of spots or test elements of other configurations. During image processing operations, the computing equipment may analyze the reflected version of the spots or other test elements to measure characteristics of the lens such as radius of curvature, whether the lens contains flat regions, pits, or bumps, lens placement in a support structure, and other lens performance data. The computing equipment may compare the measured lens data to predetermined criteria.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: March 10, 2015
    Assignee: Apple Inc.
    Inventors: Joel S. Armstrong-Muntner, James J. Dudley, Richard Ruh, Anant Rai
  • Patent number: 8978056
    Abstract: The specification and drawings present a new method, apparatus and software related product (e.g., a computer readable memory) for controlling loading (e.g., pre-filling) of video data to a user equipment by a wireless network (e.g., from internet) while the video is played by the user equipment using an additional pre-filling based on predicted degradation of connectivity of the user equipment with the wireless network to avoid interruption or deterioration of playing the video and/or to reduce video data loading cost.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: March 10, 2015
    Assignee: Nokia Siemens Networks Oy
    Inventors: Nandakishore Albal, John Harris
  • Patent number: 8978081
    Abstract: A test apparatus for testing a video processing apparatus comprises means for receiving from the video processing apparatus a video output representative of a test sequence, the test sequence comprising a plurality of frames, each frame comprising an image of a respective different one of a plurality of frame identifiers; means for obtaining a sequence of sets of frame data from the video output, each set of frame data representative of a frame; and means for processing each set of frame data to determine the frame identifier for that frame.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: March 10, 2015
    Assignee: Regenersis (Glenrothes) Ltd.
    Inventors: Paul McClay, Cameron Radford, Stephen Devine
  • Patent number: 8970710
    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.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: March 3, 2015
    Assignee: Thomson Licensing
    Inventors: Xiao Dong Gu, De Bing Liu, Zhi Bo Chen
  • Patent number: 8953048
    Abstract: The present invention ensures the visibility of a character or a drawing displayed on a screen. The illuminance of one or more partial areas forming a display unit is measured, and a video display position is set to an area except for the partial area where the illuminance is a reference value or more.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: February 10, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takeshi Furukawa
  • Patent number: 8949061
    Abstract: A DTV pilot tone is detected in a noisy environment by computing a power average of Fast Fourier Transform (FFT) output spectra of a received signal, finding a power peak in the averaged outputs, computing an adjustment parameter to center the power peak in a Discrete Fourier Transform bin of the averaged output spectra, applying the adjustment parameter to adjust the received signal, computing a coherent average of FFT output spectra of the adjusted signal, and, testing a power spectrum of the coherent average for the presence of the DTV pilot tone.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: February 3, 2015
    Assignee: Wi-Lan, Inc.
    Inventors: Vajira Samarasooriya, Daniel Payer, James S. Wight
  • Publication number: 20150009339
    Abstract: A DTV pilot sensor generates DTV pilot tone detection decisions associated with monitored television band channels without knowledge or estimation of a noise level of the monitored channel.
    Type: Application
    Filed: July 23, 2014
    Publication date: January 8, 2015
    Inventors: Vajira SAMARASOORIYA, Daniel PAYER, Jung YEE
  • Patent number: 8923649
    Abstract: A method is provided in one example and includes displaying a calibration area surrounded by a background on a display; analyzing an image of the calibration area to determine if the background is detectable in the image; adjusting the calibration area until at least a portion of the background is not detectable; and storing the adjustment for the calibration area. In more particular examples, the method may include determining a percentage of the background that is detectable; and adjusting the calibration area based on the percentage. In yet other instances, the method may include decreasing a size of the calibration area if the size of the calibration area is bigger than the display.
    Type: Grant
    Filed: September 6, 2011
    Date of Patent: December 30, 2014
    Assignee: Cisco Technology, Inc.
    Inventors: John M. Kanalakis, Jr., Zachary R. Bean, Rene A. Villanueva
  • Patent number: 8917324
    Abstract: In an image capturing and processing system, a device and method is provided. The lens is made of simple lens with high diffractive materials and known strong color aberrations. The method includes the steps of: calibrating or measuring a Point Spread Function (PSF) for each color components at a set of distances, capturing image data, and calculating the image obtained using a de-convolution method based on the PSF found.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: December 23, 2014
    Inventor: Jennifer Jinghan Yu
  • Patent number: 8908048
    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: Grant
    Filed: August 24, 2010
    Date of Patent: December 9, 2014
    Assignee: Crestron Electronics Inc.
    Inventor: Adolfo Velasco
  • Patent number: 8908047
    Abstract: Embodiments of the present invention disclose a method and an apparatus for obtaining a video quality parameter and an electronic device. The method includes dividing a target video segment into at least one video subsegment, where duration of every video subsegment is at least time perceivable by human eyes; obtaining a video quality parameter of the video subsegment; and processing the video quality parameter of the video subsegment, and obtaining a video quality parameter of the target video segment.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: December 9, 2014
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Lina Sun, Qingpeng Xie, Dong Li, Fuzheng Yang, Liang Zhou, Chang Huang
  • Patent number: 8887191
    Abstract: Methods and apparatus to identify media content using temporal signal characteristics are disclosed. An example method to identify media content includes generating a first signature based on a media content signal, the first signature comprising a plurality of first normalized features, each normalized feature corresponding to a signal peak and located at a temporal location of the signal peak in the audio signal, correlating the first signature to a reference signature comprising second normalized features to obtain an index, and determining that the first signature represents the same media content as the reference signature when the index is greater than a threshold.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: November 11, 2014
    Assignee: The Nielsen Company (US), LLC
    Inventor: Morris Lee
  • Patent number: 8881222
    Abstract: A system that incorporates teachings of the present disclosure may include, for example, a device, including a centralized controller to: distribute multimedia content to permit a television (TV) emulator client at one or more retail store locations to simulate a plurality of features of a television system interactively by using a media controller; and periodically update the multimedia content distributed to the TV emulator client. Other embodiments are disclosed.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: November 4, 2014
    Assignee: AT&T Intellectual Property I, L.P.
    Inventor: Stephen Harris
  • Patent number: 8872924
    Abstract: An apparatus and method provides an automated mechanism for configuring a position arrangement of displays in a group of displays, such as a display grid. The apparatus and method uses an image capture unit, such as a camera to capture an image of the entire display grid while test patterns are being provided. In one example, a first device outputs the test patterns to the display grid while a second device that includes the camera analyzes the captured images and determines whether a display in the display grid needs to be logically remapped to provide proper image display when the first device outputs full SLS frames in normal operation.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: October 28, 2014
    Assignee: ATI Technologies ULC
    Inventors: Ting-Yu Lin, Wayne C. Louie
  • Patent number: 8860819
    Abstract: Embodiments of the invention relate to digital imaging, and in particular, systems methods, and devices for testing target field illumination characteristics. Certain embodiments include a main unit that includes a controller configured to control timing indicators on a front surface of the main unit and light sensor modules attached to the periphery the front surface. The main unit can be configured to accept an image quality test chart. The light sensors can be configured to be coupled to the periphery of the image quality test chart or coupled to extended wired or wireless connections to provide flexible field of view placement. The display includes LED or LCD timing indicators.
    Type: Grant
    Filed: January 8, 2014
    Date of Patent: October 14, 2014
    Assignee: Peripheral Vision, Inc.
    Inventor: Michael Okincha
  • Patent number: 8854475
    Abstract: A novel image sensor includes a pixel array, a row control circuit, a test signal injection circuit, a sampling circuit, an image processing circuit, a comparison circuit, and a control circuit. In a particular embodiment, the test signal injection circuit injects test signals into the pixel array, the sampling circuit acquires pixel data from the pixel array, and the comparison circuit compares the pixel data with the test signals. If the pixel data does not correspond to the test signals, the comparison circuit outputs an error signal. Additional comparison circuits are provided to detect defects in the control circuitry of an image sensor.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: October 7, 2014
    Assignee: OmniVision Technologies, Inc.
    Inventors: Robert Johansson, Tore Martinussen
  • Patent number: 8854476
    Abstract: A method of operation of a display system includes: sending a known test sample; retrieving the known test sample; comparing the known test sample and the retrieved known test sample; generating a compensation model based on the comparison for correcting the retrieved known test sample; and providing the compensation model for displaying a corrected display on a device.
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: October 7, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Li Tao
  • Patent number: 8842185
    Abstract: Systems and methods for evaluating video quality of HDMI data are provided. In one example an HDMI video quality evaluator controls a video device to render a test pattern and encode the pattern into HDMI. The video device is controlled to transmit the HDMI formatted pattern from an output port to an input port on the device, capture a frame of the pattern, and transmit the frame to the quality evaluator. The quality evaluator compares rendered pixels in the frame to test pixels in the test pattern to identify video quality errors. Errors that exceed a threshold are identified, and a test result is outputted that includes errors exceeding the threshold.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: September 23, 2014
    Assignee: Microsoft Corporation
    Inventors: Stacey Spears, Matt Dubois
  • Publication number: 20140267780
    Abstract: Systems and methods for evaluating video quality of HDMI data are provided. In one example an HDMI video quality evaluator controls a video device to render a test pattern and encode the pattern into HDMI. The video device is controlled to transmit the HDMI formatted pattern from an output port to an input port on the device, capture a frame of the pattern, and transmit the frame to the quality evaluator. The quality evaluator compares rendered pixels in the frame to test pixels in the test pattern to identify video quality errors. Errors that exceed a threshold are identified, and a test result is outputted that includes errors exceeding the threshold.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Applicant: MICROSOFT CORPORATION
    Inventors: Stacey Spears, Matt Dubois
  • Patent number: 8823806
    Abstract: A DTV pilot sensor generates DTV pilot tone detection decisions associated with monitored television band channels without knowledge or estimation of a noise level of the monitored channel.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: September 2, 2014
    Assignee: Wi-Lan, Inc.
    Inventors: Vajira Samarasooriya, Daniel Payer, Jung Yee
  • Publication number: 20140240517
    Abstract: A video signal waveform monitor is shown, which receives an input video signal composed of video lines. A video signal digitizer samples the input video signal at video sample points to generate a sequence of video pixel data, which is written into an acquisition framestore is organized into a video pixel array so as to represent a raster of the input video signal. A level analyzer reads the video pixel data row-by-row from segments of the video pixel array and increments video level data at addresses in cache memory in response to the serially-read video pixel data. This generates a sequence of video level data, which is written into an output framestore and which represents the level of the waveform of the input video signal. The segments of the video pixel array comprise at least one and less than all of the columns in the video pixel array.
    Type: Application
    Filed: February 21, 2014
    Publication date: August 28, 2014
    Applicant: Phabrix Limited
    Inventors: Phillip Adams, Barry Donald Ruberry Miles
  • Patent number: 8817111
    Abstract: This invention provides a calibration system and method for multi-unit display systems without a need for switching the system input resolution/configuration of the display system while calibrating. This serves to avoid carrying out a re-synchronization step. As such, this system and method allows for increases speed and reduced likelihood of failure. This system and method also corrects the display system by providing an arrangement that employs a minimum of required changes so as to avoid any changes that can consequently affect the output image of the display system. Calibration of the system of display units occurs free of any changes to the input resolution and this resolution is maintained in a manner that resists change unless specifically required. Moreover, this system and method enables a resolution for the overall system that differs from the sum of the input resolutions of the discrete, individual display units in the collection.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: August 26, 2014
    Assignee: Scalable Display Technologies, Inc.
    Inventors: Dennis Miaw, Rajeev J. Surati, Kevin Amaratunga, Samson J. Timoner, Tyler M. Johnson
  • Patent number: 8817109
    Abstract: Method and modular system for generating and capturing DVI video signals. When generating a video signal, data blocks are arranged in a line parameter memory, each corresponding to a complete video line and containing pointers to specific entries for lines of the video signal in a primary image memory holding a main bit-mapped image, and a video line construct memory holding data enable and blanking patterns. Generation of the video signal is initiated by reading the line parameter memory and extracting pointers from the data blocks for a first line of the video signal being generated. Bits from the primary image and video line construct memories are obtained and combined based on extracted pointers to generate the first line of the video signal. A length of the first line of video signal is monitored to determine when it is complete, and then the process continues for each additional line.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: August 26, 2014
    Assignee: Advanced Testing Technologies, Inc.
    Inventors: William Biagiotti, Eli Levi, Peter F Britch, David Howell
  • Patent number: RE45332
    Abstract: Disclosed is a digital signal processing architecture for a flat panel display having non-uniform regions, which is not by means of materials, optical films or fabrication processes. Therefore, the manufacturing cost and complexity of the flat panel display are not negatively affected. In the digital signal processing architecture, a test is performed on the panel for identifying all pixel locations in non-uniform regions and non-uniform types. Then, input video signals are compared with data about the relative non-uniform regions for determining whether the video signal falls in a normal-region pixel or a non-uniform region pixel. Then the non-uniform compensation on the video signal falling in the non-uniform region pixel is based on the non-uniform type, so that the video signals displayed on the panel are not negatively affected.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: January 13, 2015
    Assignee: Novatek Microelectronics Corp.
    Inventor: Yu-Chuan Shen