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| Number | Title | Issue Date |
| 7777813 | Color burst automatic detection device A synchronization separation circuit extracts a synchronization timing signal from a video signal, and a burst gate pulse generator generates a timing pulse signal for gating a color burst signal period. In the color burst signal period restricted by the timing puls... | 08/17/2010 |
| 7190407 | System, method and apparatus for sandcastle signal generation in a television signal processing device A system, method and apparatus are provided for generating 98 a sandcastle signal in a television signal receiver 90, and utilizing the sandcastle signal during television signal processing. In one form, the sandcastle signal is generated by subtractin... | 03/13/2007 |
| 7082172 | Digital signal gating apparatus and method in a pulse receiver system A digital signal gating method and apparatus of a preprocessor in a detection system wherein the detection system includes a central processing unit, a main memory and a receiver, whereby the apparatus and method bifurcate received digital signals, delays them along... | 07/25/2006 |
| 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 |
| 6937682 | Clock-pulse supply unit In a clock-pulse supply unit, a first receiver unit is used to tap a central system clock pulse from the back panel. A time delay occurs in the first receiver unit. In order to compensate this time delay, a second receiver unit is used which is identical in construc... | 08/30/2005 |
| 6839092 | Feed forward error correction in video decoder In accordance with an embodiment of the present invention a microprocessor in the horizontal phased lock loop reads the horizontal timing with respect to the sync input and provides an increment inch to the horizontal discrete time oscillator to make corr... | 01/04/2005 |
| 6765624 | Simulated burst gate signal and video synchronization key for use in video decoding A simulated burst gate signal and a video synchronization key are generated. A video decoder generates a horizontal sync pulse which is programmed to envelop a color burst, thereby simulating a burst gate signal. The offset to the horizontal sync pulse due to simula... | 07/20/2004 |
| 6538702 | Digital color signal reproducing circuit A color signal reproducing circuit having A/D converter 101, sync separator 102, YC separator 103, gain controller 105, multipliers 106 and 107, low-pass filters 108 and 109, burst-period cumulative adders 110 and 111, SINCOS generator 112, clock generato... | 03/25/2003 |
| 6172713 | Color television system determination circuit A color system determination circuit for use with an input video signal having a frequency component is disclosed. The circuit includes a color trap filter for attenuating the frequency component in the input video signal with the color trap filter provid... | 01/09/2001 |
| 6046776 | Burst gate pulse generator A burst gate pulse generator generates a burst gate signal representative of a time period during which a burst signal is present within an input composite video signal. Each period of the input composite video signal includes a horizontal synchronization... | 04/04/2000 |
| 6043850 | Burst gate pulse generator circuit A burst gate pulse generator circuit generates a burst gate pulse signal representative of a time period during which a burst signal is present within a composite video signal without requiring external components. Each period of the composite video signa... | 03/28/2000 |
| 6034735 | Clock generator for digital video signal processing apparatus A clock generation circuit for a digital video processing apparatus which has a simple structure and can be stably worked in both luminance and color signal systems. A color burst phase error signal indicative of phase difference of a color burst signal i... | 03/07/2000 |
| 5844621 | Burst gate pulse generator A burst gate pulse generator generates a burst gate signal representative of a time period during which a burst signal is present within an input composite video signal. Each period of the input composite video signal includes a horizontal synchronization... | 12/01/1998 |
| 5831680 | Color signal processing circuit capable of processing PAL/NTSC color television signals which prevents image deteriorization caused by chromatization In a color signal processing circuit capable of processing a PAL/NTSC color television signal, in order to prevent an image deterioration caused by chromatization when a PAL signal is received in an NTSC signal receiving mode, there is provided a gate con... | 11/03/1998 |
| 5812208 | Burst separator and slicer circuit A burst separator and slicer circuit separates the burst signal from an input composite video signal. Each period of the input composite video signal includes a horizontal synchronization signal, a burst signal and a video information signal. A burst gate... | 09/22/1998 |
| 5774188 | Black and white video signal detector for detecting the absence of a burst signal from a video signal A black and white detector circuit monitors a burst signal separated from a composite video signal in order to determine when the composite video signal includes color video information or black and white video information. An output signal is generated w... | 06/30/1998 |
| 5774184 | Color burst forming circuit and color burst gate pulse forming circuit A color burst gate pulse forming circuit has a first counter, a second counter, a logic circuit, and a decoding circuit. The first counter counts a chrominance subcarrier supplied in a form of a clock. The second counter starts counting said chrominance s... | 06/30/1998 |
| 5621478 | Multistandard decoder for video signals and video signal decoding method The invention relates to a digital multistandard decoder for composite video signals. The multistandard decoder according to the invention can selectively process NTSC or PAL video signals and there is no need to know the corresponding signal standard bef... | 04/15/1997 |
| 5539472 | Waveform analyzer for separating an eight field sequence of a PAL video signal An input signal is inputted to an A/D converter through an amplifier and is converted into a digital input signal. A vertical synchronizing pulse and a horizontal synchronizing pulse are taken out of the output signal of the amplifier by means of a TV syn... | 07/23/1996 |
| 5481313 | Burst signal generating circuit of a video processing system In a video processing system, a burst signal generating circuit receives a discontinuous burst signal and generates a continuous burst signal by using a phase locked loop. In the conventional video processing system, it is difficult to select a loop gain ... | 01/02/1996 |
| 5463475 | Semiconductor delay line driven by an input signal-derived reference signal A method of driving a CCD semiconductor delay line capable of providing a good delay characteristic without externally supplying a clock signal. An intermittent reference signal is extracted from the color burst signal of an inputted television signal. Us... | 10/31/1995 |
| 5440349 | Color signal demodulation circuit and method therefor A color signal demodulation circuit demodulates a color signal in correspondence with different chrominance subcarrier frequencies. The input color signal is delayed by π/2 using a so-called Hilbert transformer and the carrier signal for use in the demod... | 08/08/1995 |
| 5404230 | Color burst phase correcting color signal reproducing circuit A color signal reproducing circuit comprising a phase correction device receiving a gain-controlled composite color signal, detecting color burst signal in a composite color signal and correcting phase of the color burst signal by using a 3.58 MHz signal,... | 04/04/1995 |
| 5392074 | Level detection circuit and ACC circuit employing the level detection circuit A level detection circuit includes a multiplier and an adder for computing the sums of square values of a burst signal. A maximum value holding circuit holds a maximum value of the sums of the squared values of the burst signal. A counter counts sampling ... | 02/21/1995 |
| 5389968 | CCD television camera with separated camera head A CCD television camera has a head part separated from the rest of the camera. The camera head part contains a CCD imaging device and is connected by only a single line coaxial cable to a main part containing a DC power source, a line flag output circuit,... | 02/14/1995 |
| 5355226 | Recording-reproduction apparatus applying double reset to the phase of an FM carrier A magnetic recording-reproduction apparatus records and reproduces a wide-band video signal without a color burst signal. For this purpose, a two-step phase resetting operation is conducted on the FM carrier at the front porch and the horizontal sync puls... | 10/11/1994 |
| 5325184 | Method of and apparatus for regulating color in a received video signal A method of and apparatus for regulating color in a color broadcasting receiver is disclosed and is composed of a tuner, a demodulator, and a burst level detector for detecting the color burst level of a video signal output from the demodulator and output... | 06/28/1994 |
| 5287170 | Broadcasting signal detecting circuit for SECAM and PAL signal formats A broadcasting signal detecting circuit of a SECAM system can easily determine whether the received broadcasting is from a PAL or SECAM system in accordance with the existence of a color burst at the position of a delayed burst gate pulse, using the fact ... | 02/15/1994 |
| 5276778 | Image processing system An image processing system has an input portion to which pixel data is input. A convolution processing portion processes each set of pixels in a predetermined convolution area and outputs a processed data by every predetermined convolution area. A computa... | 01/04/1994 |
| 5253042 | Burst phase detection circuit A burst phase detection circuit is provided for detecting a phase difference between an input burst signal having a predetermined phase relation with a carrier of a modulated color signal and a sampling pulse. The circuit detects such phase difference bas... | 10/12/1993 |
| 5251015 | Apparatus for positioning a timing signal relative to a synchronization signal derived in the deflection section of a television system In a picture in picture (PIP) section of a color television receiver, color burst pulses for extracting the color burst of a video signal corresponding to the main picture are generated in response to horizontal synchronization pulses derived by the defle... | 10/05/1993 |
| 5243412 | Circuit for generating a clock signal which is locked to a specific phase of a color burst signal in a color video signal A sampling clock signal, which determines sampling time points in an A/D converter used to convert a color video signal to digital form, is locked to a specific predetermined phase of the color burst signal of the video signal, by a negative feedback loop... | 09/07/1993 |
| 5231509 | Burst gate pulse generating device for use in image signal reproducing system A signal processing apparatus for use in a video cassette recorder comprising a pilot burst gate pulse generating system means responsive to horizontal synchronizing signals successively generated in correspondance with horizontal scanning periods to proc... | 07/27/1993 |
| 5168349 | Synchronization of color carriers of different color TV standards having the same line frequency When two color television standards prescribe the same horizontal scanning frequency but different color carrier frequencies, one of them, for example, requiring a frequency providing a one-half line offset to the horizontal scanning frequency (NTSC Stand... | 12/01/1992 |
| 5130785 | Integrated synchronizing signal separating circuit for generating a burst gate pulse An integrated circuit for improved burst gate pulse separation for use in a digital video system that receives a positive composite video signal wherein horizontal, vertical and composite synchronizing signals and a burst gate pulse signal are respectivel... | 07/14/1992 |
| 5068717 | Method and apparatus for synchronization in a digital composite video system In a digital composite video processing system where the video signal has a color subcarrier Fsc, horizontal and vertical sync signals and produces multiple color fields, and where the system has system clock of frequency nFsc for di... | 11/26/1991 |
| 5038203 | Burst gate pulse generating circuit A first circuit generates a first voltage which increases at a predetermined time constant in synchronism with the leading edge of a pulse contained in a sync signal. A second circuit compares the first voltage with a fixed second voltage. When the traili... | 08/06/1991 |
| 5025310 | Clock pulse generator capable of being switched to process both standard and non-standard television signals A clock pulse generator has a first clock pulse generator for generating a burst lock clock pulse signal synchronized with a color burst signal contained in a video signal; a second clock pulse generator for generating a line lock clock pulse signal synch... | 06/18/1991 |
| 4989073 | System for compensating timing errors during sampling of signals At the input to a video signal time base corrector, the phase error is sampled during each burst interval and is used to control the operation of an analog-to-digital convertor to compensate for phase errors at the start of each line. Progressive phase er... | 01/29/1991 |
| 4942314 | Peak holding circuit for a color television receiver A peak holding circuit comprises a capacitor for holding signal charges corresponding to a peak level of an input signal, and a current amplifier circuit comprising transistors connected in a triple darlington manner for supplying an output current corres... | 07/17/1990 |
