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| Number | Title | Issue Date |
| 8068176 | Noise elimination device for the detection of the vertical sync pulse in video signals In order to create a noise elimination device for the detection of the vertical sync pulse in video signals, which has a very fast locking behavior and in which additional components can be integrated easily, which components can measure fundamental parameters of th... | 11/29/2011 |
| 7352406 | Signal acquisition following transient signal interruption 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 gene... | 04/01/2008 |
| 7321398 | Digital windowing for video sync separation A processing circuit for a sync signal includes a trial circuit and a windowing circuit. The trial circuit includes a counter that generates a count value proportional to the duration between successive sync pulses. When the count value reaches a trial sync spacing ... | 01/22/2008 |
| 7277105 | Drive control apparatus and method for matrix panel A matrix panel drive control apparatus having improved display peak luminance and reduced black level luminance, permitting further improved contrast, includes a row selection circuit for selecting at least one row from among a plurality of rows of the matrix panel,... | 10/02/2007 |
| 7277133 | Adjusting pixel clock A pixel clock frequency is adjusted in response to periodically monitoring the relative positions between a video signal to be displayed and a video signal captured. Image shear of the display signal may be avoided quickly. Adjustments are made to the color burst si... | 10/02/2007 |
| 7268825 | Digital synchronizing generator A sync generator (genlock) (10) for frequency and phase locking an incoming video signal to a system clock (12) includes a digitizer (16, 22) for digitizing the incoming video signal to yield a digitized color sub-carrier burst component. A nume... | 09/11/2007 |
| 7212741 | Method of optimizing output signal of optical receiver using FEC and optical receiving system using the method Optical signals transmitted through an optical cable are converted into digital data of bits “1” and “0” on the basis of a reference voltage, and errors generated during transmission of the optical signals are corrected using Forward Error Correction (FEC). ... | 05/01/2007 |
| 7209595 | Image processing apparatus, image processing method, noise-amount estimate apparatus, noise-amount estimate method, and storage medium An image processing apparatus processes input pixel data and outputs the processed pixel data as output pixel data. The image processing apparatus includes an input reliability calculation section for calculating an input reliability indicating the reliability of th... | 04/24/2007 |
| 7202913 | Controlling on-screen displays An apparatus for controlling synchronization of on-screen display information in an auto-search mode of a radio-frequency receiver (2) connected to scan an incoming signal for valid channel frequencies, includes a picture intermediate frequency phase-locked l... | 04/10/2007 |
| 7184096 | Method and circuit for providing a horizontal scan signal for a television set A method for providing a horizontal scan control signal for a TV set from a horizontal synchronization signal contained in a composite video signal, the horizontal synchronization signal containing horizontal synchronization pulses and parasitic pulses, the scan con... | 02/27/2007 |
| 7139035 | Video noise floor estimator with impulse noise detection A method of detecting both linear and non linear noise in video data. Linear noise is detected on a line-by-line basis, by blocks within each line. Non linear noise is detected during horizontal blanking periods. The method provides a noise floor value for linear no... | 11/21/2006 |
| 7130484 | Biased curve indicator random field filters for enhancement of contours in images Enhancement of contours in images that are noisy or otherwise corrupted is important in medical imaging, scanning for weapons detection, and many other fields. Here, the Curve Indicator Random Field (CIRF) is used as a model of uncorrupted images of contours for con... | 10/31/2006 |
| 7126645 | Back-porch clamp The invention teaches a method, means and apparatus for clamping a back porch interval of a video signal including clamping a sync-tip level of said video signal to a variable reference voltage, comparing a back-porch voltage level of the sync-tip clamped video sign... | 10/24/2006 |
| 7085426 | Volterra filters for enhancement of contours in images Enhancement of contours in images that are noisy or otherwise corrupted is important in medical imaging, scanning for weapons detection, and many other fields. Here, the Curve Indicator Random Field (CIRF) is used as a model of uncorrupted images of contours for con... | 08/01/2006 |
| 7071782 | HF amplifier with switchable gain A device for amplifying or attenuating HF signals is characterized in that a transistor is connected in a common-emitter configuration in amplifying operation, and a base-collector diode is connected in the forward-biased direction for attenuating operation. ... | 07/04/2006 |
| 7053959 | Digital video encoder A mask circuit masks a digital video signal so that a video signal of an analog video signal is not outputted for a predetermined period after the start of output of a horizontal synchronizing signal of the analog video signal. A period of masking the digital video ... | 05/30/2006 |
| 7023489 | Method and device for detecting the parity of successive fields of an interlaced video signal Successive values of a horizontal phase of a video signal are determined a predetermined integer number of video lines after the successive occurrences of vertical synchronization pulses. The successive values of a parity bit are updated according to the successive ... | 04/04/2006 |
| 7015973 | Method and apparatus for generating coast signal for image processing A method and an apparatus for generating a coast signal for enabling or disabling a phase comparator in a phase-locked loop of image processing apparatus. The phase-locked loop generates a sampling clock signal, which is used to convert an analog image signal into a... | 03/21/2006 |
| 6980739 | Method for gain control of fiberoptic repeating system A method of gain control in a fiberoptic repeating system is disclosed. By the present invention, the signal levels of an optical cable can be frequently monitored without affecting the control operations of the base station. Thus, damped signal levels can effective... | 12/27/2005 |
| 6977692 | Alternative video sync detector A circuit for generating video synchronization timing signals includes a negative peak detector (FIG. 5) for following variations of a composite video signal (FIG. 1), rather than clamping the most negative voltage of the composite video signal. The ne... | 12/20/2005 |
| 6970605 | Image processing apparatus, image processing method, noise-amount estimate apparatus, noise-amount estimate method, and storage medium An image processing apparatus processes input pixel data and outputs the processed pixel data as output pixel data. The image processing apparatus includes an input reliability calculation section for calculating an input reliability indicating the reliability of th... | 11/29/2005 |
| 6967688 | Method and apparatus that reduces jitter in a display by providing temporal hysteresis A method and apparatus is directed to reducing jitter of the position of an On Screen Display (OSD) associated with a display device. Multiple horizontal signals are produced in response to a vertical flyback signal and a horizontal flyback signal for the display de... | 11/22/2005 |
| 6947060 | Image forming apparatus, electron beam apparatus, modulation circuit, and image-forming apparatus driving method An image forming apparatus which performs pulsewidth modulation with a pulsewidth set by counting a clock. Especially, for grayscale level correction by setting the frequency of the clock, the periodic clock is counted, and an output pattern is changed in accordance... | 09/20/2005 |
| 6943844 | Adjusting pixel clock A pixel clock frequency is adjusted in response to periodically monitoring the relative positions between a video signal to be displayed and a video signal captured. Image shear of the display signal may be avoided quickly. Adjustments are made to the color burst si... | 09/13/2005 |
| 6937658 | Information processing apparatus, information processing method, and distribution media An information processing apparatus capable of accurately detecting commercials included in a television broadcast. A commercial candidate section detector detects a commercial candidate section based on the characteristics of transitions between a program and a com... | 08/30/2005 |
| 6925559 | Reducing effects of transmission line reflections by changing transmission line pedestal voltage or recever threshold voltage while monitoring for irregular synchronization A system and method of reducing an effect of signal distortion from reflection on a transmission line include changing at least one of a pedestal voltage level on the transmission line and a signal threshold voltage level in a processor coupled to the transmission l... | 08/02/2005 |
| 6917387 | Arrangement for time-correct combination of two data streams Methods and apparatus are described for time-correct combination of two data streams, particularly video data streams. In this case, a sync signal of the first video data stream is a horizontal sync signal. In this case, methods and apparatus are provided to combine... | 07/12/2005 |
| 6912012 | Video decoder having lock algorithm that distinguishes between a noisy television signal input and a video recorder signal A phase-locked loop is provided which is operable to lock the sampling clock (pixel clock) to the incoming horizontal sync pulse contained within composite video information. Given the input signal is a VCR signal or a normal noise-free signal, there exists two mode... | 06/28/2005 |
| 6816203 | Method and apparatus for isolating noise from a tuner in a television signal receiver An apparatus (100) for isolating a noise intolerant device (110) from a source of noise includes a digital bus (104/105). A processor (101) outputs clock signals and first data signals and receives second data signals over the digital bus... | 11/09/2004 |
| 6795588 | Noise detector, noise detection method, signal processor and signal processing method A ringing detector detects mosquito noise and ringing for outputting an image signal smoothed by a horizontal/vertical high-pass filter when mosquito noise and ringing are detected while outputting the image signal as such when neither mosquito noise nor ringing is ... | 09/21/2004 |
| 6785401 | Temporal synchronization of video watermark decoding A method of synchronizing a watermark decoder with a watermark encoder uses a spatio-temporal (3D) synchronization pattern added to a data pattern to produce a watermark pattern for embedment into a signal. The spatio-temporal synchronization pattern is formed by mu... | 08/31/2004 |
| 6741291 | Synchronous signal detection with noise rejection A synchronous signal separation circuit 2 for separating horizontal synchronous signal HSn is connected to a horizontal synchronous signal detection circuit 3, which includes a switch 4, an oscillator 5 and a window signal generator 6 ... | 05/25/2004 |
| 6556249 | Jitter cancellation technique for video clock recovery circuitry A method and apparatus for compensating for time base or phase errors in video and audio signals that are separately stored or processed. A ring oscillator provides a plurality of clock signals, each having a same frequency and slightly different phase. E... | 04/29/2003 |
| 6529237 | Complete CDS/PGA sample and hold amplifier A correlated double sampled/programmable gain amplifier (CDS/PGA) is disclosed which is operable to precondition a CCD output analog signal. The CDS/PGA includes an operational amplifier that is configured in a sample hold operation. The single-ended inpu... | 03/04/2003 |
| 6507370 | Highly adjustable video composite sync separator and variable gain pixel clock frequency locking apparatus and method An apparatus and method for extracting vertical (V-SYNC) and horizontal (H-Blank) sync signals from a digital composite sync signal (C-SYNC) of a master video source for use in controlling a second video source, which allows for an adjustable delay relati... | 01/14/2003 |
| 6445413 | System for determining a video offset from dark photosensors in an image sensor array In a photosensitive device wherein voltages are read sequentially from a dark, or dummy, photosensor and a plurality of active photosensors with each of a series of scans, a circuit downstream of the photosensors resets the offset value of the voltage sig... | 09/03/2002 |
| 6441847 | Method for determining the quality of a video and/or television image signal The invention concerns a method for determining the quality of a video and/or television image signal. In diversity reception installations comprising several receivers, it is necessary to establish a criterion for assessing the reception signals, so as t... | 08/27/2002 |
| 6271888 | Method for obtaining line synchronization information items from a video signal, and apparatus for carrying out the method A method for obtaining line synchronization information items from a video signal is proposed. To that end, the following improvement measures are proposed: a) an accurate determination of the position of a line synchronization pulse is effected by carryi... | 08/07/2001 |
| 6211920 | Circuit for the treatment of synchronization signals A signal treatment circuit treats an input signal containing line sync pulses used for displaying data on a screen. The circuit contains a phase locked loop to control horizontal sweeping according to active edges of line sync pulses, and a filter circuit... | 04/03/2001 |
| 6154256 | Sync separator and video signal detector circuits A symmetrical clamp clamps the input video signal to a reference voltage during composite sync pulses, so the coupling capacitor discharge current is kept small between composite sync pulses. For startup, the non-symmetrical clamp employs an operational a... | 11/28/2000 |
