Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
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| Number | Title | Issue Date |
| 7391472 | System and method for adaptive color burst phase correction We describe and claim an adaptive color burst phase correction system and method. The adaptive color burst phase correction system includes a signal detector to extract a color burst from a video signal, the color burst including a phase and an amplitude, an adaptiv... | 06/24/2008 |
| 7352305 | Method and circuit for interpolating encoder output Two-phase sinusoidal signals QA, QB output from an encoder are interpolated by sample-and-hold (S/H) circuits and A/D conversion (ADC) circuits, and data D is output in accordance with a data request signal RQ from exterior. For this interpolation of encoder output,... | 04/01/2008 |
| 7324118 | Super imposed image display color selection system and method An optimal pen color is automatically selected for a given background color based upon a predetermined relative distance in the Munsell color-order system. The predetermined distance is defined in terms of saturation, hue and or lightness. In general, sufficient vis... | 01/29/2008 |
| 7271843 | Method and apparatus for analyzing a digitally converted analogue signal A method for obtaining line synchronization information items from a video signal is proposed. The inventive method is based on convolving the relevant part of an analogue video line signal with a pattern function. The result of the convolution operation is further ... | 09/18/2007 |
| 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 |
| 7212724 | Jitter correcting apparatus and method for video signals A jitter correcting apparatus and method for a video signal in a video signal reproduction system includes a digital video decoder for demodulating an externally-applied video signal and a phase-locked loop for generating a first clock signal synchronized with the v... | 05/01/2007 |
| 7167208 | Digital broadcasting receiver and method for compensating color reproduction error of the same Digital broadcasting receiver, and method for compensating a color reproduction error therein, the digital broadcasting receiver including a channel decoder, a TP part for demultiplexing a TP stream from the channel decoder for being provided with a PCR (Program Clo... | 01/23/2007 |
| 7139037 | Circle correction in digital low-pass filter A filter circuit is provided which has a filtered input and an unfiltered input. The filtered input passes through delay elements to coefficient circuitry. The unfiltered input passes to the coefficient circuitry without passing through the delay elements. In this m... | 11/21/2006 |
| 7136971 | Memory controller for synchronous burst transfers A processing system includes a processor, a memory controller, and a memory subsystem. The memory controller includes a processor interface, a memory data interface, sequential transfer circuitry, and transaction processing logic. Randomly accessed data units of a f... | 11/14/2006 |
| 7006149 | Video signal control circuit The delay circuit composed of plural flip-flops converts an input data into plural data 110-0˜110-n having delays of 1˜n clocks, which are inputted to the selector of the selector circuit. The counter counts the pixel number per one lin... | 02/28/2006 |
| 6993690 | Memory unit having memory status indicator A processing unit 12 that is provided in a memory unit 10 can transfer information that is stored in a corresponding address to a spare memory area and prohibit writing of information into the corresponding address when the number write operations to t... | 01/31/2006 |
| 6975362 | Video signal converter for converting non-interlaced to composite video A VGA to analog video converter is useful e.g. for displaying video and/or graphics data from a computer onto a large screen television or television monitor. The RGB video signals output from the personal computer are first converted to digital form. The analog-to-... | 12/13/2005 |
| 6961095 | Digital display jitter correction apparatus and method A jitter correction apparatus and method are disclosed. In one embodiment, the apparatus has a rising edge corrector to receive a jittered signal and to output a jitter corrected rising edge of the jittered signal. The apparatus may also have a falling edge correcto... | 11/01/2005 |
| 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 |
| 6894727 | Picture transmission apparatus, a picture transmission method and a recording medium, and a picture transmission program Providing picture transmission apparatus, a picture transmission method and a recording medium, and a picture transmission program that can transmit the latest picture data in real time depending on the situation of the network bandwidth. The aforementioned picture ... | 05/17/2005 |
| 6453109 | Video-signal processing apparatus providing a first clock signal and second clock signal which is based on the phase of the input signal A signal processing apparatus includes a first clock generation circuit for generating a first clock signal having a constant frequency, a detection circuit for detecting a phase change in an input video signal, a second clock generation circuit for gener... | 09/17/2002 |
| 5845039 | Time-base correction in a video recording/playback system A video recording/playback system includes in its recording electronics time-base correctors both for luma signal and for color-under signal, the time-base corrector for luma signal being used to facilitate comb filtering and the time-base corrector for c... | 12/01/1998 |
| 5822011 | Apparatus for detecting noise in a color video signal A phase detector provides angular phase error measurements of the color burst component of a video input signal. Burst phase errors exceeding a given angular threshold are detected and the number occurring within a given period of time are counted. From t... | 10/13/1998 |
| 5559812 | Digital time base corrector using a memory with reduced memory capacity A digital time base corrector uses a memory with a reduced storage capacity, to reduce the cost. Absolute value data of an amplitude and polarity data of a burst signal in a color video signal are written into a memory every horizontal scan period. A sign... | 09/24/1996 |
| 5515108 | Digital automatic frequency control method and circuit therefor A digital automatic frequency controlling method and circuit therefor in which a digital horizontal sync signal is separated from an input horizontal sync signal in response to a system clock, a horizontal sync separation point value is extracted, an actu... | 05/07/1996 |
| 5475440 | Digital time base corrector for video signal reproduction A digital time base corrector which can perfectly eliminate residual errors. A sync clock signal whose phase is synchronized with a time base fluctuation included in a reproduction video signal is formed in accordance with at least one of the horizontal s... | 12/12/1995 |
| 5471250 | Digital time base corrector with dropout compensating function A digital time base corrector reduces the capacity of a memory to approximately a 1 H of image data while maintains the interleave relationship between a luminance signal and a chrominance signal of a video signal. Polarity data indicating the polarity of... | 11/28/1995 |
| 5459524 | Phase modulation demodulator apparatus and method This invention is for a reference generator and demodulator for recovering information which has been phase, modulated on (or encoded on) a carrier. The inventive concepts described herein include a novel reference measurement circuit including a sampler ... | 10/17/1995 |
| 5351089 | Video signal processing device and method A video signal processing device comprises: a unit for extracting a first color burst signal from a first video signal; a unit for generating a first subcarrier in synchronism with the first color burst signal extracted from the first video signal; a unit... | 09/27/1994 |
| 5280345 | Jitter correction circuit for reducing jitter components of a luminance signal in video information compression A jitter correction circuit includes a first device for detecting a phase difference between a horizontal sync signal in a video signal and a system clock signal locked to burst components of the video signal. A second device serves to subject a first lum... | 01/18/1994 |
| 5210619 | Chroma phase modulator An A/D converter converts a composite video signal to a digital signal. A bandpass filter extracts a chroma signal-A sinX from the composite video signal in digital form. A delay circuit delays the chroma signal-A sinX by 1/4 fsc to output-A cosX. Delay c... | 05/11/1993 |
| 5153714 | Circuit for removing jitter of chrominance signal and television set using the same A frequency of a chrominance signal including a jitter component and separated from a color video signal is converted from a first frequency to a second frequency by first frequency converting device. Then, the chrominance signal which frequency is conver... | 10/06/1992 |
| 5043799 | Color image display control apparatus with correction of phase difference in sampling clock A color image display control apparatus for receiving a composite color picture signal and processing color image data included in the signal. A color picture signal in an analog form included in the composite color picture signal is converted to a digita... | 08/27/1991 |
| 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 |
| 4907070 | Time base corrector with memory mapped system control A time base corrector is comprised of a plurality of system function modules implementing the functions for time base correcting an analog composite color video signal with a stable reference video signal. The system function modules obtain control data a... | 03/06/1990 |
| 4736238 | Fully digitized video signal reproducing apparatus A digital television circuit in which the analog FM video signal is first digitized and all processing is performed digitally, including FM demodulation. Clocks at the subcarrier frequency and four times this frequency are synchronized with the horizontal... | 04/05/1988 |
| 4733294 | Time base corrector memory arrangement and memory control A time base corrector including a frame memory and a memory control. The memory control is microprocessor based and calculates the starting addresses of memory areas at which video data will be written to or read from the frame memory and the starting tim... | 03/22/1988 |
| 4729013 | Time base error corrector A time base error corrector comprises a chrominance subcarrier phase corrector whereby the subcarrier phase of a video signal is controlled before being written in the buffer memory in such a way that when the video signal is read from the buffer memory o... | 03/01/1988 |
| 4717950 | Signal phase control by memory cycle read/write groups unlock An apparatus for controlling the phase of a video data signal to effect color correction includes a video data memory and memory control circuit. Interlaced write and read portions of the memory cycle are selectively spaced in time within a memory read/wr... | 01/05/1988 |
| 4716454 | Chroma phase word encode/decode in a video processing system A video signal correction circuit of a signal processing system includes means for determining the chroma line type, for inserting the line type information in the video signal, and for extracting the line type information from the video signal downstream... | 12/29/1987 |
| 4714954 | Read start pulse generator for time base corrector A read start pulse generator comprises circuit elements for automatically adjusting the phase of a read start pulse signal by cancelling phase offset caused when phase adjustments are made to a synchronizing signal, burst signal, and hue signal.... | 12/22/1987 |
| 4698667 | Method to reestablish a predetermined phase relationship of a chrominance TV signal with respect to a reference To simplify the apparatus and the method steps to reestablish predetermined phase relationship of a chrominance TV signal with a reference, two chrominance derived signals of carrier frequency, respectively phase shifted by plus and minus 45° with respec... | 10/06/1987 |
| 4688081 | Apparatus for correcting time base error of video signal In order to correct a time base error of a video signal reproduced from a video signal recording/reproducing apparatus such as a VTR or the like, when the reproduced video signal is sequentially written into or read out from a memory, a signal which is ob... | 08/18/1987 |
| 4677459 | Reference signal generator A reference signal generator used to compensate for a time base error of a color video signal reproduced from a video tape recorder having a memory into which the color video signals are written in response to a write clock and from which the color video ... | 06/30/1987 |
| 4675724 | Video signal phase and frequency correction using a digital off-tape clock generator In a time base correction system, a composite color television analog signal derived from a prerecorded tape is converted by an analog-to-digital (A/D) converter to a digital signal having horizontal sync and color burst signal components. The digitized s... | 06/23/1987 |
