Test Signal Generator Patents (Class 348/181)
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Patent number: 8035688Abstract: A computer program product and method for calibrating and characterizing a color display perform calibrating and characterizing steps. A light source is operated in order to emit light from one or more light emitters on the light source. A color capture device, e.g., a digital camera, is calibrated and characterized based on the emitted light. Then, color images are displayed on the color display and captured on the color capture device. The color display is calibrated and characterized based on the captured color images. Computer program instructions are recorded on the computer readable medium, and are executable by a processor, for performing the calibrating and characterizing steps. A method for generating a controlled light source includes displaying light source selections to a user and receiving a user light source selection. Selected light emitters produce a light output matching the user light source selection.Type: GrantFiled: July 19, 2007Date of Patent: October 11, 2011Assignee: Xerox CorporationInventors: David Snyderman, Geoffrey John Woolfe, Raja Bala
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Publication number: 20110234810Abstract: Included are systems and methods for performing an internal operations test to a set top terminal (STT). At least one embodiment of a method includes creating a test pattern for testing video functionality of the STT, sending the created test pattern to a digital encoder, and converting the test pattern to an analog signal.Type: ApplicationFiled: June 10, 2011Publication date: September 29, 2011Applicant: Scientific-Atlanta, LLCInventors: Leo Montreuil, Wayne B. Williams, Samuel H. Russ, Robert A. Kriete
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Patent number: 7999850Abstract: A video signal generator, employing a multi-output amplifier and a video signal connector, is physically connected to a device under test to eliminate the use of signal cables, to solve the impedance matching issue, and to reduce noise from the signal cables' exposure to high temperatures. Moreover, the video signal generator employs a video algorithm stored in a programmable microprocessor and instructions downloaded to provide on-line adjustable video patterns sets for test. The video signal generator includes the programmable microprocessor, a television encoder, a multi-output amplifier, and a video signal connector.Type: GrantFiled: June 16, 2006Date of Patent: August 16, 2011Assignee: Cybervision, Inc.Inventors: Chih Hung Wang, Chao Ning Chan, Yu Teng Lin
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Patent number: 7990418Abstract: An automated test measurement system (ATMS) (100), for automatically measuring a device under test (DUT) (60), includes a control module (110), a signal generation module (120), an encoder module (130), and a signal analyzer module (140). The control module receives an encoder parameter and a test item, and generates a pattern command and an analyzer command according to the test item. The signal generation module generates a pattern according to the pattern command. The encoder module transforms the pattern into a bitstream according to the encoder parameter, and transmits the bitstream to the DUT. The bitstream is then transformed into a test signal. The analyzer module receives the test signal from the DUT, and analyzes the test signal according to the analyzer command. An automated test measurement method therefor is also provided.Type: GrantFiled: December 28, 2006Date of Patent: August 2, 2011Assignee: Hon Hai Precision Industry Co., Ltd.Inventor: Pai-Chen Liu
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Publication number: 20110169965Abstract: Embodiments of the invention may provide systems and methods for detecting the presence a DTV signal such as an ATSC DTV signal. The system and methods may be applied to a received RF signal that has been down-converted to a baseband or low-IF digitized signal. The systems and methods may detect a presence of a DTV signal by searching for its characteristic pilot signal, known to reside in a fixed frequency range for all valid DTV signals. This pilot signal may be extracted by processing the baseband or low-IF signal in multiple stages. The first stage may reduce the signal information to that pertaining to the frequency band covering all valid pilot frequencies and commensurately reduces the sampling rate, and hence computational complexity of subsequent operations. A second stage may then efficiently operate on this reduced rate signal to focus on a series of particular pilot frequencies for interrogation.Type: ApplicationFiled: November 12, 2010Publication date: July 14, 2011Applicant: SAMSUNG ELECTRO-MECHANICS COMPANYInventors: Andrew Joo Kim, Seungmok Oh, Matthew Kuhn, Bob Nayar, Youngsik Hur
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Patent number: 7978218Abstract: Video processing arrangement including a host computer having a monitor, a video asset coupled to the computer for generating video signals and an interface for connecting the video asset to the computer to enable the display of video signals on the monitor. The video asset includes various primary elements including a primary composite video module for producing different types of a primary video signal and outputting the primary video signal via output channels, a stroke generator module for generating a stroke XYZ video signal and outputting the stroke video signal via output channels and a real time capture module for capturing video signals in a plurality of different modes. The video asset also includes a common distributed time base module for generating and distributing clock signals to all of the primary elements.Type: GrantFiled: October 10, 2006Date of Patent: July 12, 2011Assignee: Advanced Testing Technologies Inc.Inventors: William Biagiotti, David Howell, Peter F. Britch
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Publication number: 20110122256Abstract: A method and apparatus are presented for dynamically testing video equipment. One or more test patterns utilize different regions of video signal characteristics. Adjustment is made to the video characteristics of a region until a perceived parameter of the region matches a second region. A performance parameter of said video equipment is determined from said adjustment.Type: ApplicationFiled: October 22, 2010Publication date: May 26, 2011Inventor: STEVE SOMERS
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Publication number: 20110102602Abstract: 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: ApplicationFiled: October 29, 2009Publication date: May 5, 2011Inventors: Lucian Leventu, Razvan Stan
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Publication number: 20110069178Abstract: 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: ApplicationFiled: September 23, 2009Publication date: March 24, 2011Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.Inventor: STEPHEN HARRIS
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Patent number: 7911500Abstract: An image processing device includes: a connecting unit that connects a projecting device and an image capture device, at least one of the projecting device and the image capture device having an adjustable position; an acquiring unit that acquires an image captured by the image capture device capturing an image of a reference pattern that is projected by the projecting device and indicates an effective projecting range of the projecting device; a color converting unit that extracts the reference pattern from the captured image, and performs a color conversion on the extracted reference pattern; an enlarging/reducing unit that enlarges or reduces the color-converted reference pattern in accordance with the ratio between the maximum effective imaging range of the image capture device and the effective projecting range of the projecting device; a superimposing unit that superimposes the enlarged or reduced reference pattern on a reference pattern yet to be projected; and an output unit that outputs the referenceType: GrantFiled: December 21, 2007Date of Patent: March 22, 2011Assignee: Fuji Xerox Co., Ltd.Inventors: Shingo Uchihashi, Hiroyuki Miyake
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Patent number: 7911498Abstract: 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: GrantFiled: November 8, 2006Date of Patent: March 22, 2011Assignee: Novatek Microelectronics Corp.Inventor: Yu-Chuan Shen
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Patent number: 7912349Abstract: The operation of a video playback application supporting display of an encoded video may be validated using a special-purpose video decoder. The decoder compares pre-determined indications of dependency frames for frames of the video with dependency frames that are identified based on an order in which the frames are provided to the decoder. Based on the comparison, the decoder verifies that the frames may be decoded with correct dependencies. In one implementation, a frame of a video is accessed. A first description and a second description identifying frames of the video upon which decoding of the accessed frame depends are accessed. The first description is compared to the second description, and whether the first and second descriptions identify a common set of frames is determined based on the identifying.Type: GrantFiled: April 25, 2005Date of Patent: March 22, 2011Assignee: Apple Inc.Inventors: John Samuel Bushell, Christopher Lance Flick
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Publication number: 20110019005Abstract: Systems, methods and devices are disclosed that provided for providing remote video feedback. The disclosure herein includes a transmitting computing device that is configured to produce an image frame encoded with metadata and to transmit the encoded image frame over a network to a remote display device. The remote display device includes a viewing screen contained in a chassis with bevel. The viewing screen includes an information validation pixel with the chassis extending over and covering the image validation pixel. The chassis also includes a photo sensor positioned on the under side of the bezel so as to be in operational view of the image validation pixel. The system also includes a sensor electronics module that is configured to detect the metadata when the metadata is displayed by the information content pixel and is received by the photo sensor. The sensor electronics module also generates image frame feedback information based upon the detecting.Type: ApplicationFiled: July 21, 2009Publication date: January 27, 2011Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Jeremy Ramos, Scott Stackelhouse
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Publication number: 20110019006Abstract: In accordance with some embodiments of the invention, a video processing circuit can include a synchronization generator to generate a clock signal from an input video stream; and a test pattern generator coupled to receive the clock signal provided by the synchronization generator and to generate a test pattern over a number of cycles. In accordance with some embodiments of the present invention, a video processing system may include an video input capture circuit; a video input processing circuit including a synchronization generator and a test pattern generator; a video scaling circuit; a video merging circuit to recombine the video signals provided by the video scaling circuit into one video signal; and a video output circuit including a cyclical redundancy check circuit.Type: ApplicationFiled: July 19, 2010Publication date: January 27, 2011Inventors: Gabriel Varga, Greg Smith
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Patent number: 7862179Abstract: A dual-mode projection apparatus has a projection module for projecting an image onto a projection surface. An image sensor module captures images of the projection surface and determines spatial and temporal characteristics of a visible light spot superimposed on the projection surface. A communications module transmits the spatial and temporal characteristics of the visible light spot to a remote device for remote control of the device based on the spatial and temporal characteristics of the visible light spot.Type: GrantFiled: November 7, 2007Date of Patent: January 4, 2011Assignee: OmniVision Technologies, Inc.Inventors: Jizhang Shan, Jin Li
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Patent number: 7821534Abstract: A method and apparatus are presented for dynamically testing video equipment. One or more test patterns utilize different regions of video signal characteristics. Adjustment is made to the video characteristics of a region until a perceived parameter of the region matches a second region. A performance parameter of said video equipment is determined from said adjustment.Type: GrantFiled: May 5, 2008Date of Patent: October 26, 2010Assignee: RGB Systems, Inc.Inventor: Steve Somers
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Publication number: 20100238297Abstract: A system for compensating for skew in a color video signal transmitted by a cable having multiple conductors is described. A test pulse signal (e.g. a 2 MHz signal) is inserted into the color components (e.g. RGB) of the video signal during time periods in each frame when the RGB video signals are inactive, such as within 300 ?s after the V sync signal. After transmission over the cable, the RGB components with the inserted test signal are delayed relative to each other using a delay line in cooperation with a control circuit. The delay line generates detect signals by detecting relative delays of the test signal pulses inserted in the RGB components. The control circuit controls the amount of delay in the delay line based on the detect signals, so that the RGB components in the video signal outputted by the delay line are synchronized.Type: ApplicationFiled: March 23, 2009Publication date: September 23, 2010Applicant: ATEN INTERNATIONAL CO., LTD.Inventors: YUN-SONG GOU, HONG-TAO WEN, QIAN-QI ZHUANG
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Publication number: 20100231725Abstract: The color calibration using colored rays method achieves illuminant independence in calibrating digital still cameras. A constraint is developed using matrix-vector operations and properties of the Kronecker product. The constraint ensures similar calibration performance between colored rays set and the Macbeth ColorChecker. An optimization scheme using orthogonal non-negative matrix factorization with the new constraint is able to obtain the optimal colored rays set. Then, by acquiring an image of the optimal colored rays set, a camera is able to determine an adjustment matrix for color calibration. Experimental results show that compared to traditional calibration approach for digital still cameras, the colored rays approach gives smaller color error under various evaluation illuminants with only one shot needed.Type: ApplicationFiled: March 16, 2009Publication date: September 16, 2010Applicants: SONY CORPORATION, A JAPANESE CORPORATION, SONY ELECTRONICS INC.Inventors: Xiaoling Wang, Farhan A. Baqai, Takami Mizukura, Naoya Katoh
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Patent number: 7768533Abstract: Programmable video generation and analyzer including a video asset for generating video signals having a primary composite video module for producing different types of a primary video signal and outputting the primary video signal via output channels, and a secondary video source module for producing a secondary composite video signal and outputting the secondary composite video signal via output channels. The secondary video source module produces the secondary composite video signal in an identical or different format than the primary video signal and different than the primary video signal. An NTSC/PAL converter is included, for example, as part of the secondary video source module, for generating video in NTSC format and PAL format. The NTSC/PAL converter accepts a stream of data from the primary composite video module and the secondary video source module and converts it into Composite Baseband Video, Y/Pr/Pb Component Video, Y/C Video (S_Video) or RGB Video.Type: GrantFiled: January 11, 2007Date of Patent: August 3, 2010Assignee: Advanced Testing Technologies, Inc.Inventors: William Biagiotti, David Howell
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Patent number: 7764305Abstract: CW lock is conducted with less manual operation. A first input 22 receives a black burst (BB) signal from a key TV station. A second input 30 receives a continuous wave (CW) signal having an accurate, known frequency. A phase adjust signal generator 24 generates a reset signal having a known phase relationship with regard to the key TV station BB signal. The reset signal is used as a phase adjust signal. A PLL 32 receives the CW signal to provide clock. A counter 34 receives the clock and provides a frame pulse signal for synchronizing the key and local TV signals at a local TV station wherein the BB signal of the local station may be derived from the frame pulse signal. The counter 34 uses the reset signal to adjust the phase relationship between the key TV station BB signal and the frame pulse to a desired phase relationship based upon the key TV station BB signal.Type: GrantFiled: November 23, 2005Date of Patent: July 27, 2010Assignee: Tektronix, Inc.Inventors: Norihiko Sato, Shinobu Kubota, Kazutomo Tohyama
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Publication number: 20100165115Abstract: In an interactive broadcasting system, television programming may be broadcast with interleaved web content information. The progress in broadcasting the web content information over one or more transports and over one or more channels within those transports, may be monitored to provide a time based indication of what content has been broadcast. In one embodiment, markers may be inserted into the data transmission flow and a method may be utilized to associate a handle with a particular marker. A method may be called which obtains the handle and another method may be utilized to invoke the handle to obtain current information about broadcast transmissions. This information may be used within a broadcast encoder or may be provided to a content provider, for example, through a log-in server.Type: ApplicationFiled: March 11, 2010Publication date: July 1, 2010Inventor: Ramanathan Ramanathan
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Publication number: 20100134634Abstract: An image processing system includes a camera, an image processor and a calibration surface. The calibration surface includes thereon a calibration pattern, the calibration pattern comprising a plurality of alternately coloured elements which provide a corresponding plurality of corners at locations on the calibration pattern at which more than two of the coloured elements adjoin. The corner locations define a first group of lines and a second group of lines, the lines in each of the group of lines are parallel with respect to each other and with respect to the calibration surface. The first group of lines is orthogonal to the second group of lines and the camera is operable to generate and communicate to the image processor a video signal representative of a scene as viewed by the camera, the scene including the calibration surface.Type: ApplicationFiled: September 11, 2009Publication date: June 3, 2010Applicant: SONY CORPORATIONInventor: Sarah Elizabeth WITT
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Patent number: 7705881Abstract: A subjective quality estimating part (11) receives an undeteriorated reference video signal (RI) and a deteriorated video signal (PI) produced from the reference video signal, calculates video signal feature values for both the signals, and according to a difference between the calculated video signal feature values of the signals, estimates a subjective quality of the deteriorated video signal. A feature value calculating part (12) calculates the video signal feature values of the reference video signal. A correction information storing part (13) stores correction information that corresponds to video signal feature values and is used to correct the subjective quality.Type: GrantFiled: August 20, 2004Date of Patent: April 27, 2010Assignee: Nippon Telegraph and Telepone CorporationInventors: Jun Okamoto, Takaaki Kurita
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Publication number: 20100091111Abstract: A method for setting a frame rate conversion (FRC) and a display apparatus using the same are provided. According to a method for setting FRC, an FRC level is received from a user; and a motion estimation and motion compensation level when performing FRC is set according to the input FRC level. Therefore, a user may set the FRC level according to the user's preference.Type: ApplicationFiled: May 26, 2009Publication date: April 15, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventor: Jeong-woo KANG
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Publication number: 20100079596Abstract: A method for automatically testing display device. The method includes steps of: capturing an image; acquiring a horizontal strip of a to-be-tested image which includes at least a portion of each of the color interval column of the image; comparing a standard deviation A of RGB values of pixels in a vertical sample with a standard deviation B of RGB values of pixels an adjacent vertical sample to obtain samples of each color interval from many samples taken; taking pixels from many vertical samples of each color interval to calculate a mean value of the RGB values of each color interval respectively, determining a color corresponding to each of color intervals, and determining an interval sequence of the to-be-tested image and the code sequence of the color intervals; and determining an image format corresponding to the code sequence according to the image format table which records a plurality of image formats corresponding to the interval sequences of the color intervals of the images.Type: ApplicationFiled: April 2, 2009Publication date: April 1, 2010Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen)CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.Inventors: Jin-Quan Qiu, Xiao-Man Pu
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Publication number: 20100053337Abstract: A device, such as a set-top box, may include logic to allow television customers to automatically test and adjust the quality of the displayed video signal. A set-top box may receive a user selection of whether to perform a video test using an automatic loopback test sequence or a user subjective test sequence. The set-top box may perform, when the automatic loopback test sequence is selected, a video quality test that may include transmitting a signal from the set-top box, receiving a loopback version of the video signal, and comparing the received loopback version of the video signal to the transmitted signal. The set-top box may perform, when the user subjective test sequence is selected, a video quality test that may include displaying one or more test patterns to a user and receiving feedback from the user relating to a quality of the displayed test patterns.Type: ApplicationFiled: August 27, 2008Publication date: March 4, 2010Applicant: VERIZON BUSINESS NETWORK SERVICES INC.Inventors: Colum H. KIRK, David Taiyung KAO
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Publication number: 20100020179Abstract: A High Definition Multi-Media Interface (HDMI) cable may exhibit frequency dependent signal attenuation, inter symbol interference, and inter-pair skew. A boost device integrated with the cable can compensate for such impairments of the cable. A self calibrating cable with a boost device of the embodiment of the invention is described, in which parameters that control the response of the boost device are set optimally in a self-calibrating process comprising looping the boosted cable on itself through a calibration fixture that contains a calibration control device. The boost device includes pattern generators and a sampling circuit. Each high speed channel of the cable is separately tested and calibrated with the help of one of the other channels serving as a sampling channel. Additional embodiments provide for a selected replica boost device and a distinct pattern generator device in the calibration fixture.Type: ApplicationFiled: July 30, 2009Publication date: January 28, 2010Inventors: John Martin Horan, John Anthony Keane, Gerard David Guthrie
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Publication number: 20090316001Abstract: A method of testing an aircraft video system using a handheld video testing apparatus is described. The aircraft video system includes a video processing system and at least one display. The method includes generating a digital test image utilizing the video testing apparatus, receiving the digital test image at the video processing system, forwarding the digital test image to at least one of the displays through operation of the video processing system, and verifying the digital test image is correctly produced by the displays to which the digital test image was forwarded.Type: ApplicationFiled: June 19, 2008Publication date: December 24, 2009Inventors: Paul E. Anway, Dexter A. Schnebly
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Patent number: 7627799Abstract: A panel driving circuit that produces a panel test pattern and a method of testing a panel are provided. The driving circuit includes a pattern generation unit and a selection unit. The pattern generation unit responds to a system clock and produces pattern test data and pattern test signals. The selection unit responds to a test signal and selects and outputs either (a) the pattern test data and the pattern test signals that are outputted from the pattern generation unit, or (b) the pattern test data and pattern test signals that are directly applied from the outside. The driving circuit and the method of the panel test generates the panel test data, the horizontal synchronizing signal, the vertical synchronizing signal, and the data activating signal within the driving circuit using a system clock so that the testing of the panel can be carried out without using a separate test device.Type: GrantFiled: January 28, 2005Date of Patent: December 1, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Won-Sik Kang, Jae-Goo Lee
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Publication number: 20090290026Abstract: A High Definition Multi-Media Interface (HDMI) cable may exhibit frequency dependent signal attenuation, inter symbol interference, and inter-pair skew. A boost device integrated with the cable can compensate for such impairments of the cable. A self calibrating cable with a boost device of the embodiment of the invention is described, in which parameters that control the response of the boost device are set optimally in a self-calibrating process comprising looping the boosted cable on itself through a calibration fixture that contains a calibration control device. The boost device includes pattern generators and a sampling circuit. Each high speed channel of the cable is separately tested and calibrated with the help of one of the other channels serving as a sampling channel. Additional embodiments provide for a selected replica boost device and a distinct pattern generator device in the calibration fixture.Type: ApplicationFiled: July 30, 2009Publication date: November 26, 2009Inventors: John Martin Horan, John Anthony Keane, Gerard David Guthrie
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Publication number: 20090284604Abstract: A method and a device for adjusting a color temperature coordinate value which is measured by a display color analyzer are disclosed. The device comprises a main control module. The method comprises the following steps: displaying a test image on a standard monitor; receiving a color temperature coordinate value of the standard monitor which is measured by the display color analyzer; obtaining a default standard color temperature coordinate value and comparing with the measured color temperature coordinate value to obtain a color temperature offset value; and adjusting the color temperature coordinate value measured by the display color analyzer by using the color temperature offset value.Type: ApplicationFiled: November 19, 2008Publication date: November 19, 2009Applicant: Wistron CorporationInventors: Tsang-Hsing Lee, Fang-Wen Liao
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Publication number: 20090268034Abstract: An apparatus and method for frequency sweeping a CATV network, suitable for an upstream path frequency sweeping, is presented. A narrowband test signal is injected into the network by a generator coupled to a cable modem during a time interval allocated by the head end for the cable modem to transmit a modulated digital signal. The amplitude of the test signal is lower than the amplitude of the modulated digital signal, so as not to impair reception of said digital signal at the head end. The frequency of the test signal is swept, and the amplitude of the received test signal is measured. A telemetry or a digital signal transmission is used to communicated the values of the amplitude of the test signals between the injection and the measurement locations of the network.Type: ApplicationFiled: April 27, 2009Publication date: October 29, 2009Applicant: Actena LLCInventors: Adam A. Nowotarski, Daniel K. Chappell
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Publication number: 20090244290Abstract: 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: ApplicationFiled: March 31, 2008Publication date: October 1, 2009Applicant: Verizon Services Corp.Inventors: Henry A. McKelvey, Rosa M. Underwood, Umang A. Patel
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Publication number: 20090213223Abstract: A testing system includes a computer (10) and a signal switching adapter (30). The computer includes a test signal generating element (19) and a microprocessor (15). The test signal generating element is capable of generating an original test signal. The microprocessor (15) is capable of communicating with the test signal generating element. A video card (11) is capable of receiving the original test signal from the microprocessor and outputting a to-be-displayed analog signal. The signal switching adapter includes an A/D converter (32). The A/D converter is capable of converting the to-be-displayed analog signal to a digital display signal. The signal switching adapter is capable of outputting the digital display signal back to the microprocessor.Type: ApplicationFiled: May 30, 2008Publication date: August 27, 2009Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.Inventor: XIANG-YUN KONG
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Patent number: 7561061Abstract: A monitor with reminder sounds is disclosed. The device includes at least a monitor, at least a button and an audio player. The button is disposed on the monitor for adjusting status of the monitor. The audio player is also arranged on the monitor and is connected with the button. When pressing the button, the audio player receives a signal and makes a sound. The monitor further includes a detection module that is used to check output image signals of the monitor. When detecting errors of output image signals of the monitor, the detection module sends a detection signal to the audio player so as to make the audio player generate a sound. Thus the user is reminded that whether the button is pressed precisely. Furthermore, the device also informs the user is that the monitor is in abnormal status. Therefore, the present invention provides users more convenience of use.Type: GrantFiled: September 7, 2006Date of Patent: July 14, 2009Assignee: Asustek Computer Inc.Inventors: Yueh-Huah Lee, Yaw-Huei Chiou
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Patent number: 7551298Abstract: A print control device with an embedded engine simulation module and the test method thereof are disclosed. With the engine simulation module is inserted in the print control device, the print engine signal is directly sent to the video signal processor of the print control device. The video signal processor follows the print engine signal along with the clock and video signals to print data signals, thereby testing the print control device. Therefore, adjustments of the print engine signal can directly simulate the situations of supporting different print engines.Type: GrantFiled: June 4, 2004Date of Patent: June 23, 2009Assignee: Primax Electronics Ltd.Inventors: Che-Hung Hu, Heng-Chi Hsu, Wen-Ning Kuo
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Publication number: 20090115851Abstract: A method is described for selecting a motion vector for a first image block of an image of an image sequence from a number of test vectors, wherein at least one of these test vectors is a motion vector of a further image block that is arranged temporally and/or spatially adjacent to the first image block, or a vector formed by modification of this motion vector, and wherein the method covers: Determining a distance measurement for each test vector, Determining a vector length of the test vectors and determining the test vector with the shortest vector length or a first subgroup of test vectors with the shortest vector lengths compared to the other test vectors, Determining a modified distance measurement to the shortest test vector or to the test vectors of the subgroup depending on the distance measurement determined to the respective test vector and depending on a length measurement, Comparing the modified distance measurement of the shortest motion vector or the modified distance measurement of the testType: ApplicationFiled: October 24, 2008Publication date: May 7, 2009Applicant: Micronas GmbHInventors: Peter Rieder, Guenter Scheffler, Christian Tuschen, Marko Hahn, Markus Schu
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Publication number: 20090109293Abstract: A self calibrating imaging display system (100). The imaging display system (100) can include a screen (110) having integrated photosensors (115). The photosensors can detect luminance values (155) correlating to luminance levels of the screen. The luminance values can be forwarded to a calibration module (130) which can receive the luminance values as an input and generate luminance correction factors (165). The luminance correction factors can be applied to adjust the luminance of the screen. Accordingly, images can be displayed on the screen with proper luminance levels.Type: ApplicationFiled: January 5, 2009Publication date: April 30, 2009Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Sussan S. Coley, Victor S. Moore, Robert M. Szabo
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Publication number: 20090102926Abstract: Embodiments of the invention include a method that comprises receiving a request to record television content on a specified channel for a specified period of time. The method can also include tuning to the specified channel at the specified time, and recording the specified content. The method can also include determining that one or more segments of the television content is corrupted. The method can also include presenting a notification indicating that some of the television content is corrupted, retuning to the specified channel made by the request, and acquiring uncorrupted television content for use in replacing the one or more segments of corrupted television content.Type: ApplicationFiled: October 19, 2007Publication date: April 23, 2009Applicant: International Business Machines CorporationInventors: Kulvir S. Bhogal, Gregory J. Boss, Rick A. Hamilton, II, Brian M. O'Connell
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Publication number: 20090058986Abstract: A method of measuring video latency between a sender and a receiver in a video conference system is disclosed. In an embodiment, the method includes initiating an electrical signal from a first location in a video conference system, transmitting the electrical signal through the video components of the video conference system, reflecting the electrical signal back through the video components of the video conference system and measuring the latency of the electrical signal at the first location related to the transmission and reflection of the electrical signal.Type: ApplicationFiled: August 31, 2007Publication date: March 5, 2009Inventors: Ted Beers, Jon A. Brewster, Don Welch, Timothy S. Hubley
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Patent number: 7495688Abstract: A method of generating an MPEG sequence for multiple component analog video measurements modifies a general purpose encoder and provides an MPEG encoded signal to test a device under test (DUT) component analog output that is valid in both RGB and YPbPr in both pulse and bar and that solves digital RGB cross-talk due to aliasing of Cb and Cr in 4:0:0 and 4:4:4 formats. The general purpose encoder is modified by removing vertical pre-filtering and post-filtering, altering quantization tables alternate scanning for vertical redundancy, and turning off motion estimation. The input to the MPEG encoder is pre-aliased to provide minimum digital cross-talk after MPEG compression by repeating every other sample.Type: GrantFiled: April 5, 2005Date of Patent: February 24, 2009Assignee: Tektronix, Inc.Inventor: Kevin M. Ferguson
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Patent number: 7495674Abstract: Video processing arrangement including a host computer having a monitor, a video asset coupled to the computer for generating video signals and an interface for connecting the video asset to the computer to enable the display of video signals on the monitor. The video asset includes various primary elements including a primary composite video module for producing different types of a primary video signal and outputting the primary video signal via output channels, a stroke generator module for generating a stroke XYZ video signal and outputting the stroke video signal via output channels and a real time capture module for capturing video signals in a plurality of different modes. The video asset also includes a common distributed time base module for generating and distributing clock signals to all of the primary elements.Type: GrantFiled: November 10, 2004Date of Patent: February 24, 2009Assignee: Advanced Testing Technologies, Inc.Inventors: William Biagiotti, David Howell
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Publication number: 20090046154Abstract: An exemplary method for testing a video signal generator is provided. The method includes: setting test parameters of the video signal generator to perform a function test; generating signals based on the test parameters through the video generator; controlling a standard measuring apparatus to receive the signals and to convert the signals into test values; determining whether the video signal generator passes the function test by comparing the test values with a standard working range of the video signal generators; and generating a test report based on the test values and the test parameters. A system for testing a video signal generator is also provided. By utilizing the present invention, errors can be reduced and test efficiency can be enhanced.Type: ApplicationFiled: December 17, 2007Publication date: February 19, 2009Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.Inventors: SHI-YUAN TAO, REN-BO HUANG, XIAO-LIN GAN, YU-KUANG HO
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Publication number: 20090040311Abstract: A matched state detection unit (33) of a video matching device (100) detects a reference video frame, of the respective video frames of a reference video (1) and degraded video (2B), which is in a matched state in which it is spatially and temporally matched with each degraded video frame. A matching degree derivation unit (34) controls a degradation amount derivation unit (40) to acquire the first degradation amount indicating the degradation amount between a reference video frame and a degraded video frame in the matched state and the second degradation amount indicating the degradation amount between a reference video frame and a degraded video frame in a state shifted from the matched state by a predetermined number of pixels and calculate a matching degree on the basis of the ratio between the first degradation amount and the second degradation amount. A matching information output unit (35) outputs the matching degree between the reference video and the degraded video after matching.Type: ApplicationFiled: July 11, 2006Publication date: February 12, 2009Inventors: Jun Okamoto, Takaaki Kurita
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Patent number: 7489336Abstract: A method for adjusting images displayed on a television set, the television set being coupled to receive image information from an image-generating electronic device. The method includes displaying on the television set, using test image information from the image-generating electronic device, a test image. The method also includes receiving, from a human operator, user input. The method further includes employing the user input to form scaled test image information that corresponds to a scaled test image, the scaled test image representing a scaled version of the test image. The method yet also includes displaying on the television set, using the scaled test image information, the scaled test image on the television set in lieu of the test image.Type: GrantFiled: June 30, 2005Date of Patent: February 10, 2009Assignee: Hewlett-Packard Development Company, L.P.Inventor: Ruth Ann Lim
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Publication number: 20090009607Abstract: Although video display screens are factory calibrated to correct performance, they differ in the actual color balance presented to the viewer. Similarly, the output of video sources may vary, in particular from video cameras. For recalibration purposes, each video display screen is connected to the video source via a Central Processing Device, and each video display screen is calibrated when first installed by means of a test signal having a pre-defined color balance. The signal is analyzed by means of a three-color sensor, and the information is fed back to the Central Processing Device and stored along with a device identifier. Any subsequent video signal provided to a particular video display screen will be modified electronically by means of individual stored parameters. Video sources will have their output signals similarly modified after having been subjected to a similar analysis performed on a video display screen already calibrated.Type: ApplicationFiled: February 24, 2006Publication date: January 8, 2009Applicant: BANG & OLUFSEN A/SInventor: Torben Dalgaard
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Publication number: 20090007175Abstract: An image displaying method and a display apparatus using the same are provided. A broadcast forwarding device processes OSD. In a poor reception state of a broadcasting signal received from the broadcast forwarding device, the display apparatus displays an image informing of the bad reception state. The display apparatus displays the stored image including a guidance message through the decoding, rather than the OSD. Accordingly, even without a component for generating the OSD, the display apparatus can show the necessary message to a user.Type: ApplicationFiled: June 17, 2008Publication date: January 1, 2009Applicant: Samsung Electronics Co., Ltd.Inventors: Dal-young YU, Mi-kyung KIM
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Publication number: 20080297604Abstract: Disclosed herein is a test pattern signal generator for outputting a video signal adapted to display, on a display device, a test pattern of a color chart according to a standard for a first color gamut and a color chart of a test pattern according to a standard for a second color gamut which is wider than the first color gamut, the test pattern signal generator including: a color chart recording section configured to record color chart information of the standard for the first color gamut and color chart information of the standard for the second color gamut; and a test pattern signal generation section configured to generate, based on the information recorded in the color chart recording section, a video signal adapted to display test patterns in which the color charts according to the respective standards are arranged in a predetermined layout on the same screen.Type: ApplicationFiled: May 30, 2008Publication date: December 4, 2008Applicant: Sony CorporationInventors: Yutaka Imai, Naoya Katoh
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Publication number: 20080297603Abstract: A method for detecting and quantifying losses in at least one of video and audio equipment, comprising the steps of generating the test pattern; processing the test pattern through video equipment; and displaying the processed test pattern to a display to a viewer. In one embodiment, the test pattern is indicative of video compression losses due to quantization. In another embodiment, the test pattern is indicative of a color transformation mismatch after encoding/decoding with incompatible video transmission standards. In a third embodiment, the test pattern is iso-luminant after a color transformation between a first and second video transmission standard. In a fourth embodiment, the test pattern is indicative of lipsync error.Type: ApplicationFiled: June 3, 2008Publication date: December 4, 2008Inventor: Robert Norman Hurst
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Patent number: RE42089Abstract: A novel process of visual calibration of a computer display or the like in volves adjusting the appearance and relative appearance of targets and su targets displayed on the display. An objective method is provided for determining the precisely optimal brightness setting for CRT displays, which method is also applicable to the setting of the “Black Level” control on some FPDs. A precise method is provided to visually determine conformity of a display's tonality to a given standard tone curve, for example a gamma 1.8 curve, which is embodied in one of the preferred calibration target sets. The need to sense and therefore be able to control and to verify the correct gray balance of the entire tone scale of the display is met. The problem of verifying the similarity of the tone curve in the display profile and that of the actual calibration is solved. By converting a preferred RGB gamma target into CIE Lab image data through an ideal display profile of the correct gamma, a new kind of target is taught.Type: GrantFiled: February 3, 2006Date of Patent: February 1, 2011Inventor: Joseph Holmes