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.

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.

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.

Abstract: A method and apparatus for measuring the quality of a video is provided. The method comprises: generating a frame loss pattern of the video by indicating whether each frame in the video is lost or successfully transmitted; and evaluating the quality of the video as a function of the generated t came loss pattern.

Abstract: 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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

Abstract: A method is for monitoring the electrical integrity of lines of photosites of an imaging device with matrix array of photosites. The control lines of photosites may include for each line of photosites an emission of elementary electrical control signals for the photosites of the line. The method may include diagnosis of the elementary electrical control signals emitted.

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.

Abstract: Video processing arrangement including a host computer, 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 the video signals on a monitor. The video asset includes primary elements such as a primary composite video module that produces different types of a primary video signal and outputs the primary video signal, and a secondary video source module that produces a secondary composite video signal and outputs the secondary composite video signal. The primary composite video module includes a memory component including a user-programmable sequence of bits representative of a video signal and user-programmable signal generators synchronized to the primary video signal output of the primary composite video module. The memory component includes four user specified pulse memories which each hold a series of arbitrary bit line patterns.

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.

Abstract: It is proposed a system (32) for testing a device comprising a HDMI transmitter delivering out output signals and being able to operate in a test mode, the system (32) comprising: —an HDMI test unit (34) different from the device to be tested which is able to carry out measurements on the output signals of the device to be tested and has a controller interface (38) controlling the measurements, the controller interface (38) being adapted to be controlled by the device when the device operates in test mode. It is also proposed a method of using the HDMI test unit of such system. The system enables to test a device comprising a HDMI transmitter in a faster way.

Abstract: An imager including a self test mode. The imager includes a pixel array for providing multiple pixel output signals via multiple columns; and a test switch for (a) receiving a test signal from a test generator and (b) disconnecting a pixel output signal from a column of the pixel array. The test switch provides the test signal to the column of the pixel array. The test signal includes a test voltage that replaces the pixel output signal. The test signal is digitized by an analog-to digital converter (ADC) and provided to a processor. The processor compares the digitized test signal to an expected pixel output signal. The processor also interpolates the output signal from a corresponding pixel using adjacent pixels, when the test switch disconnects the pixel output signal from the column of the pixel array.

Abstract: A long-range VGA image transmission system includes an image output source for providing a first image signal; a test circuit for providing a test signal; an image encoding and transmitting circuit for encoding the first image signal and test signal to generate a transmission signal; an image decoding and receiving circuit for receiving and decoding the transmission signal to generate a second image signal and the test signal; an image detection and comparison circuit for receiving, detecting and comparing the second image signal with the test signal to generate an adjustment signal; an image-enhancement compensation circuit for receiving the adjustment signal to automatically adjust the second image signal and generate a third image signal; and an image display device for receiving the second image signal and then receiving the third image signal after the image adjustment. Therefore, manpower cost and possible failure of image adjustment with naked eye is eliminated.

Abstract: A plurality of images of a scene may be obtained. These images may have been captured by an image sensor, and may include a first image and a second image. A particular gain may have been applied to the first image. An effective color temperature and a brightness of a first pixel in the first image may be determined, and a mapping between pixel characteristics and noise deviation of the image sensor may be selected. The pixel characteristics may include pixel brightness. The selected mapping may be used to map at least the brightness of the first pixel to a particular noise deviation. The brightness of the first pixel and the particular noise deviation may be compared to a brightness of a second pixel of the second image. The comparison may be used to determine whether to merge the first pixel and the second pixel.

Abstract: Methods and apparatus are described for assessing the video image decoding quality of a set top box (STB), television receiver or other video device. Moving video testing of video delivery hardware in a manufacturing environment uses a video sequence that has reference characteristics embedded in the visible portion of the video signal from frame to frame. Each frame of the video is analyzed for distortions of the embedded reference objects, and the reference objects are allowed to move from frame to frame. The reference objects are located through the use of a background that is easily discriminated from the objects and by the use of frame templates that locate the reference information in the frame.

Abstract: A receiver is described for a testing device for a data stream in which the data stream comprises a plurality of encoded data components. The receiver comprises an input for inputting a plurality of encoded data components, a processor for processing the plurality of encoded data components; and a plurality of outputs each for outputting a processed one of the plurality of encoded data components. The receiver is arranged, such that, in use, a plurality of encoded data components received at the input are processed by the processor and a processed one of the plurality of encoded data components is output from one of the plurality of outputs. This arrangement provides computational efficiency.

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.

Abstract: A video test pattern generator and method include a control sequencer configured to control one or more address counters to generate a video test pattern. A first memory is configured to store pixel values for transitions between portions of the video test pattern and configured to store a repeated pixel value. A second memory is configured to store pattern information to determine placement of the pixel values for the transitions and the repeated pixel values. A repeat counter is configured to control a number of the repeated pixel values produced before a next transition.

Abstract: A parameter detector sends at least one test signal to a display and receives at least one detected display parameter from a remote control device in proximity of the display. A content parameter analyzer retrieves at least one content parameter from content to be sent to the display. A parameter comparator then compares the detected display parameter to the content parameter and adjusts outgoing content signals based on the content parameter but in accordance with the detected display parameter. The parameter comparator provides at least one suggested display parameter adjustment when the content parameter is beyond the detected display parameter. The suggested display parameter can be transmitted using a video and/or an audio signal.

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.

Abstract: In an example, a method includes generating a test frame of video data having a first format, and rendering the test frame of video data to a frame buffer, wherein the frame buffer is configured to store video data in a second format. The method also includes reading, from the frame buffer, a return frame of video data, wherein the return frame of video data comprises the video data of the test frame formatted in the second format, and determining the second format based on a comparison of the test frame having the first format and the return frame having the second format.

Abstract: A method for measuring the amount of noise in a video image includes receiving a signal from an imaging device; extracting a luma component from a color image; applying a filter to compute the second derivatives of the extracted luma component; determining a ratio of noise pixels to total pixels in the second derivative; and comparing the ratio to a pre-determined ratio.

Abstract: The present invention relates to a connection problem determination method and a connection problem determination apparatus for an image input device, and the connection problem determination apparatus, for an image input device, which includes: a network connection sensing unit which senses the network connection between a network video record system and a network-connectable image input device which provides a specific image; a timer which generates signals at regular time intervals in accordance with a clock pulse; a time delay measuring unit which measures a time delay on the basis of the signals from the timer if no network connection is sensed; and a connection problem determination unit which determines that there is a connection problem if the time delay is a predetermined threshold value or greater.

Abstract: Provided is an image quality adjustment apparatus that can measure display unevenness for each pixel with higher accuracy than in the conventional art. An image quality adjustment system includes an image quality adjustment apparatus that generates correction data corresponding to a display panel, a test pattern generation device that causes the display panel to display a test pattern image, and a ROM writer. The image quality adjustment apparatus measures unevenness based on images of a display state of the display panel that are captured using cameras, and generates correction data for correcting the display unevenness that occurs due to manufacturing variations of the display panel. A feature of the present invention is that the image quality adjustment apparatus includes a plurality of cameras, and an image of a single display panel is captured using the plurality of cameras to obtain unevenness data of the display panel.

Abstract: The present invention discloses an OLED display device and control method thereof. The OLED display device includes a display screen, a sensor and a timing controller, wherein the timing controller includes a detection unit, a test image generation unit, a data compensation unit and image control unit. Detection unit provides command for generating test image. Test image generation unit generates test image according to the command for generating test image. Data compensation unit obtains decayed signal corresponding to test image detected by the sensor and to generate compensation signal to transmit to image control unit according to decayed signal. Image control unit transmits test image to display screen for detecting decay of display screen when inputting test image. As such, the present invention can improve the uneven display situation caused by decay of OLED display device as time passes.

Abstract: Disclosed is a method and apparatus for concurrently displaying on a display device, a selected main presentation and graphical shapes representative of button presses on a remote control. In one embodiment, the graphical shapes and the selected main presentation are displayed in two separate regions on the display screen. In another embodiment, the graphical shapes are overlaid on the selected main presentation. In yet another embodiment, the graphical shapes and the selected main presentation are displayed in a picture-in-picture format.

Abstract: 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.

Abstract: A test system (200) for testing for missing or shorted parts within a tuner circuit includes a signal generator (202) for applying a harmonic-containing baseband time varying RF test signal to the tuner circuit. The tuner circuit is tuned to a harmonic of test signal. A detector 208 coupled to the baseband IF output of the tuner circuit detects the voltage generated in response to the applied RF test signal. A voltage measurement device (210) measures voltage detected by detector to provide an indication of the gain. Significant changes in the gain indicate missing part(s) or short circuits.

Abstract: A portable device for communicating with an electronic device comprises a first communicating module, a processing module, and a converting module. The first communicating module intercommunicates data between the portable device and the electronic device. When the processing unit generates the instruction data in a first format, the converting module converts the instruction data from the first format to a second format, the communicating module transmits the coveted instruction data to the electronic device, so as to control the electronic device to generate feedback data which is in the second format; the communicating module further receives the feedback data in the second format from the electronic device, the converting module converts the feedback data from the second format to the first format which can be processed by the processing module.

Abstract: An image processing apparatus including: at least one connector including at least one connection pin configured to be connected to an external device; an interface which interfaces transmission of signals to the connection pin through a first wiring formed between the interface and the connection pin; a switching unit which is switched on to transmit a signal through a second wiring which is formed differently from the first wiring to feedback the signal from the connection pin to the interface; a controller which controls the switching unit to allow the feedback of the signal through the second wiring to transmit a preset test signal from the interface to the first wiring at the time of inspecting a signal transmission state of the connection pin and the first wiring, and determines the signal transmission state based on a change of the test signal feedbacked to the interface through the second wiring.

Abstract: A test device is for testing display parameters of an electronic product with a page browsing function. The electronic product stores display times of a number of standard frames which selected from a standard video file. The standard video file includes frames record the play process of a testing file being played by a standard electronic product. The test device controls a video capturing unit to capture an original video file which includes frames to records the playing process of the electronic product. The electronic product searches matching frames of the number of standard frames in the original video file. Thus the parameters of the electronic product can be determined by display times of the matching frames in the video file.

Abstract: 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.

Abstract: 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.

Abstract: In an example, a method includes generating a test frame of video data having a first format, and rendering the test frame of video data to a frame buffer, wherein the frame buffer is configured to store video data in a second format. The method also includes reading, from the frame buffer, a return frame of video data, wherein the return frame of video data comprises the video data of the test frame formatted in the second format, and determining the second format based on a comparison of the test frame having the first format and the return frame having the second format.

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.