Abstract: Subjectively weighting noise measurements for multiple video formats based upon a defined standard for a standard definition video format uses a ratio between the active line time for the standard definition video format and the active line time for another video format to be measured in order to rescale a unified weighting filter for the standard definition video format for the another video format.
Abstract: A method and apparatus for capture of a spherical image is disclosed. The present invention includes at least one camera having a lens with at least a 180° field-of-view for capturing a hemispherical image. In a first embodiment, a second hemispherical image is created corresponding to a mirror image of the hemispherical image captured by the camera. In a second embodiment, two back-to-back cameras capture first and second hemispherical images, respectively. In both embodiments, a converter combines the two images along their outside edges to form a single, spherical image. Finally, the converter stores the complete spherical image for later retrieval and perspective corrected viewing.
Abstract: A television monitor display with video signal processing comprises a source (SM) of a video display signal (Y) including a sync component (S). A video processor (U1) is coupled to process the video display signal (Y). A sync separator (SS) is coupled to generate separated synchronizing signals (Sy) from the sync component (S) of the video display signal (Y). A video amplifier (100) is coupled to the sync separator (SS) and the video processor (U1) and generates an output video signal (Ys+) wherein a sync component (S+) of the output video signal is increased in amplitude in accordance with the separate synchronizing signals (Sy) coupled to the video amplifier (100).
August 7, 2002
Date of Patent:
April 1, 2008
Thomas David Gurley, Mark Alan Nierzwick, Daniel Lee Reneau
Abstract: In a projection type display apparatus including a blue CRT display apparatus with low luminous efficiency and low luminous efficiency, the present invention seeks to improve contrast while suppressing the fall in brightness for red, green, and blue color as a whole. In the projection type display apparatus, the images of three colors outputted from three monochrome CRT display apparatuses 10R, 10G, 10B which respectively output monochromatic video signals of red, green, and blue color, are respectively projected on a screen unit 14 via a reflecting mirror 12 so as to synthesize a image of three colors and generate a color image. The brightness of the green CRT display apparatus which outputs the green image having the highest luminous efficiency is increased, while maintaining the brightness of the blue CRT display apparatus 10B. Further, a light absorption means for tinting to reduce the increased green brightness is provided to balance the whole brightness of red, green, and blue.
Abstract: A device and method for modifying a video image of a display apparatus method, for efficiently modifying a size and aspect ratio of a video image, is disclosed. The device includes an on-screen display (OSD) generator providing an on-screen display (OSD) on a display for programming a size and an aspect ratio of a video image, and a video processor modifying a displayed video image in accordance with the size and aspect ratio of the displayed video image programmed by a user. Herein, the video processor modifies the video image from a center point of the video image.
June 10, 2004
Date of Patent:
December 4, 2007
LG Electronics Inc.
Tae Jin Park, Woo Hyun Paik, Ick Hwan Kim, Sang Chul Bae, Su Dong Hong
Abstract: Presented herein is a system and method for a line address computer for providing line addresses in multiple contexts for interlaced to progressive conversion. A feeder fetches a first line from a top field, fetches a first line from a bottom field corresponding to the top field, after fetching the first line from the top field, and fetches a second line from the top field after fetching the first line from the bottom field. The second line from the top field is adjacent to the first line in the top field.
Abstract: A routing device is provided for transporting digital data from demodulated digital television signals. The routing device includes a network that routes the digital data to demultiplexers via at least one decoding module. The network includes means for connecting to at least two independent demodulation channels, with each of the demodulation channels producing digital data from a demodulator. The network allows individual routing of the digital data from each of the demodulation channels to the demultiplexers via at least one decoding module. Also provided are a corresponding routing method and a host device that includes such a routing device. Exemplary applications of the routing device and method are a digital television receiver with an image incorporation (picture in picture) function, and a digital television combined with a recording device.
Abstract: A display apparatus includes a signal source connecting port through which a video signal source is connected. The display apparatus includes a TV tuner connecting port to connect to a TV tuner. A selection part selects one of a video signal, transmitted from the signal source connecting port, and a TV signal, transmitted from the TV tuner connecting port to be displayed, to control the TV tuner. A micro controller displays the one of the video signal and the TV signal according to the selection from the selection part, displays a TV tuner control OSD when the TV signal is selected, and transmits a control signal from the selection part to the TV tuner through the TV tuner connecting port based on the TV tuner control OSD.
Abstract: The present invention relates to adaptive time-shifting of audio frames (Fa) in encoded audio signal relative to video frames (Fv) in encoded video signal, which together form an audio/video message steam such that the corresponding decoded audio and video signals are aligned in time within the maximum degree of deviation. The invention accomplishes this alignment by determining a desired delay of the encoded audio signal for the decoded signals to meet deviation requirement The desired (Dd) delay is then converted into a frame delay number (nD), which is calculated as one of the two neighbouring integers to a ratio between the desired delay (Dd) and an interval (Ta) at which the audio frames (Fa) are received. A number of audio frames (Fa) equal to the frame delay number (nD) are alternately stored into respective read out from FIFO-buffers (309; 310) such that sufficiently delayed audio frames (Fa) are delivered to an audio decoding unit (313).
Abstract: An apparatus for displaying a double screen in a wide screen display device, the apparatus including a video interface to receive a first and a second video signal from a plurality of video signals according to a selection control signal, wherein each of the first and the second video signals have a general screen aspect ratio; a scaler to scale the first video signal to a resolution of a main screen and to scale the second video signal to a resolution of a subscreen with the general screen aspect ratio; and a control unit to output the selection control signal to display the double screen, control scaling of the first video signal and second video signal, and to simultaneously display the scaled first video signal on an area of a screen and the scaled second video signal on a portion of a remaining area of the screen.
Abstract: An image evaluation chart and a method for testing performances of the video equipment using the same. The image evaluation chart includes a resolution inspection area. The resolution inspection area includes a center point located at a center part of the chart, a regular-squared outer line located at outside of the center point, and a plurality of resolution measurement lines symmetrically arranged at right and left sections and upper and lower sections on the basis of the center point. Therefore, the image evaluation chart accurately and efficiently tests all performances, for example, resolution, balance, view angle, distortion, and focus, etc., of video equipment such as a camera by means of one-shot image capture, and provides users with reliable test data.
Abstract: Method and arrangement for capturing and automatically formatting video signals in both synchronized and deflection driven forms in which a single real-time capture module is provided including three input channels for receiving the video signals, three analog to digital converters for processing the video signals and three dynamic memories. Data from the converters is stored in the three dynamic memories. A line location look-up table is generated during the storage of data which holds the starting address of the stored lines of synchronized video. A video signal is then generated by addressing the line location look-up table.
Abstract: The present invention discloses a scalable video format conversion system, which utilizes a plurality of system resources to convert an interlaced video signal into a progressive video signal. The disclosed scalable video format conversion system contains a scalable motion-adaptive de-interlacing system and a mode control module. The mode control module determines a detection number dynamically according to the availability of the system resources and/or the status of the scalable video format conversion system. A variable-field motion detection apparatus of the scalable motion-adaptive de-interlacing system accesses a plurality of video fields to detect a motion situation of an image area, wherein the number of the plurality of accessed video is equal to the detection number determined by the mode control module.
Abstract: Disclosed herein is a video signal process circuit that includes a control circuit having a level detection circuit and a dynamic range switch circuit. In the control circuit and a microcomputer, an average luminance of an image displayed on a liquid crystal panel via a liquid crystal driver circuit is detected. When the average luminance is equal to or over a level YSmax, an upper limit of the dynamic range is expanded, so that a signal level of a composite video signal in which white blur can occur can be digitized to a digital signal without being limited by the upper limit gradation, reducing the white blur of the image to improve the quality of the image.
Abstract: An apparatus and method for controlling a convergence of a projection television includes a pattern generator which generates R, G, and B video patterns used for controlling the convergence and then outputs the R, G, and B video patterns to a display, and a controller which compares position coordinates and luminance levels of the R, G, and B video patterns with position coordinates and luminance levels of reference R, G, and B video patterns to adjust the luminance levels of the R, G, and B video patterns to the luminance levels of the reference R, G, and B video patterns.
Abstract: A method for controlling dissipation in a video amplifier for a display signal. The method comprises the steps of setting a first current for establishing a first gain bandwidth product in the video amplifier. Generating a control signal in accordance with a slew rate of the display signal. Modifying the first current responsive to the control signal such that the video amplifier gain bandwidth product is controlled in accordance with the slew rate of said display signal.
Abstract: The present invention discloses a PLL (90), which may be implemented in software, hardware, or a combination of software and hardware, which comprises a sync detector (92) adapted to output a phase error (152), a vertical sync discrete time oscillator (DTO) block (98) adapted to output a vertical sync DTO (130) based on the phase error (152), and an output logic (100) adapted to detect a vertical sync based on the vertical sync DTO (130).
Abstract: A frame signal phase adjuster comprises units for inputting a parallel clock and a reference signal (22-4 and 22-1); generating a frame signal from the reference signal (22-1), adjusting a phase of the frame signal (22-3), generating an adjusted frame signal synchronized by the parallel clock from the parallel clock and the adjusted frame signal (22-4), generating a frame reset pulse signal based on the parallel clock and the adjusted frame signal synchronized by the parallel clock (22-2), and outputting the frame reset pulse signal (22-2). The unit (22-4) adjusts the phase of the frame signal so that the frame signal is constantly HIGH or LOW throughout a setup time and a hold time.
Abstract: An automatic gain controller (AGC) and method for use in a digital TV receiver having an IF amplifier, an RF amplifier, an analog to digital converter (ADC) connected to the IF amplifier, and a demodulator connected to the ADC, the AGC comprising: an input selector for selecting as feedback signal one of a digitized IF signal output of the ADC and a demodulated signal output of the demodulator; a signal detection unit for detecting the conditions of the feedback signal and outputting status signals; and a traffic controller for receiving the status signals and outputting control signals based on the status signals to an IF gain controller and an RF gain controller for independent gain control of the RF amplifier and the IF amplifier. The AGC and method further including hysteresis-curve-based switching for alternatively halting adjustments to IF gain while adjusting RF gain or halting adjustments to RF gain while adjusting IF gain.
Abstract: A system receives a transport stream containing video data and audio data. A determination is made regarding the time required to process the video data contained in the transport stream and the time required to process the audio data contained in the transport stream. The system then determines a difference in time to process the video contained in the transport stream as compared to the audio data contained in the transport stream. Presentation of the audio data is delayed by this difference in time to synchronize presentation of the audio data with presentation of the video data.