Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 7174082 | Method for designing de-emphasis circuit for video signal processing integrated circuit and integrated circuit made by the same In a de-emphasis circuit designing method for minimizing the number of peripheral components of a video signal processing integrated circuit (IC), a circuit device for determining the level of a reproduced video signal of the de-emphasis circuit is included in the v... | 02/06/2007 |
| 6188444 | Apparatus and methods for synthesizing foreground and background images An apparatus and method for improving the clarity of a picture produced from a video signal. A differentiation circuit is provided that produces a responsive correction signal. Mechanisms for adjusting the shape (width, amplitude, etc.) of the correction ... | 02/13/2001 |
| 5959698 | Poly phase filter for dot sequential color difference signal conversion A poly phase filter for converting a sampling frequency of a digital video signal to perform a dot sequential color difference signal conversion operation, the digital video signal including a luminance signal and a color difference signal, the color diff... | 09/28/1999 |
| 5872605 | Video signal processing apparatus A video signal processing apparatus includes an equalizer for delaying an input color signal by an adjustable phase retardation. A low pass filter is operative for delaying the input color signal by an adjustable phase retardation. A phase detector is ope... | 02/16/1999 |
| 5442328 | Transmission line correction system A correction system for transmission lines includes a structure adapted to automatically correct the attenuation of the DC component of any signal traveling on the line and a device adapted to correct the attenuation of the various frequency components of... | 08/15/1995 |
| 5361039 | Power amplifier device for a composite signal The disclosure relates to the linear power amplification, in a single channel, of a composite signal formed by two independent signals. In a single channel formed by correction means followed by a linear preamplifier followed by a saturated amplifier, the... | 11/01/1994 |
| 5343236 | Automatic cable attenuation compensation system In an automatic cable attenuation compensation system comprising a fixed compensation part (FC-R/G/B) providing a stepwise adjustable attenuation compensation for substantially compensating cable attenuation, the stepwise adjustable attenuation compensati... | 08/30/1994 |
| 5311298 | Chroma adjustment circuit Simplified apparatus for controlling the phase and amplitude of the chroma subcarrier of a television signal is disclosed. The phase control includes compensation so that the color burst amplitude is stable as the phase is varied.... | 05/10/1994 |
| 5270814 | Method and apparatus for measuring the linearity of a transmission system by detecting the strength of an intercarrier frequency A method and apparatus for measuring and correcting nonlinearities in a transmission system which transmits a modulated wave having a maximum peak level NC and with a frequency band [F1, F2 ]. The system transmits a compos... | 12/14/1993 |
| 5266853 | Peak clipper with an expanded linear characteristic region for video signals A peak clipper according to this invention contains a differential circuit composed of a first and second p-n-p transistors, the first transistor's base terminal receiving the input signal and the second transistor's base terminal receiving a reference vo... | 11/30/1993 |
| 4991003 | Receiver with correction for comb filter frequency response A video source is coupled to a display processor by a circuit path including a comb filter and a luminance signal delay line and including a comb filter amplitude correction circuit. Circuit means in the path prevents impedance variations of the correctio... | 02/05/1991 |
| 4855812 | Picture synthesizing apparatus with gain control system A picture synthesizing apparatus in which a main picture is displayed with a part inlaid with a subsidiary picture. The apparatus includes an AGC circuit for regulating the gain of the main video signal and an AGC circuit for regulating the gain of a subs... | 08/08/1989 |
| 4799212 | Circuit for controlling two signals approximately 90 degree apart in phase This control circuit adjusts two signal waveforms to a phase difference of exactly 90° and to exactly equal amplitudes of the respective frequency components. It is a digital circuit containing a phase control stage (pr) and an amplitude control stage (a... | 01/17/1989 |
| 4791498 | Time base corrector A time base corrector for correcting time base fluctuations in a video signal is effective to remove both low frequency time base fluctuations and repetitive high frequency time base fluctuations repeating at the field period of the video signal. The time... | 12/13/1988 |
| 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 |
| 4689665 | Gated control circuit The invention relates to a gated control circuit for controlling an input signal, for example the chrominance signal formed by the color synchronizing signal and the color difference signal of a FBAS signal. The chrominance signal is controlled in depende... | 08/25/1987 |
| 4688096 | Demodulation phase error compensation circuitry as for an automatic deghosting system A television receiver which includes an automatic deghosting system synchronously demodulates IF television signals to generate baseband signals representing the in-phase and quadrature phase modulation components of the IF signals. A signal representing ... | 08/18/1987 |
| 4686569 | Circuitry for reducing demodulation phase error as for an automatic deghosting system An automatic deghosting system synchronously demodulates IF television signals to generate baseband composite video signals. A strong RF ghost signal having a carrier phase that differs from that of the desired signal may cause demodulation phase errors, ... | 08/11/1987 |
| 4682119 | Class AB amplifier and a distortion corrector therefor A class AB amplifier and its distortion corrector are provided for obtaining linear amplification, even for low input signal levels. For this, at low levels, the distortion corrector has a response Vs'=f(Ve') (with Ve' and Vs': input and output voltages o... | 07/21/1987 |
| 4673970 | Chrominance signal processing system A chrominance signal processing system includes a variable gain amplifier capable of effecting gain control for amplifying a carrier chrominance signal and an A/D converter for effecting an analog/digital conversion of an output of the variable gain ampli... | 06/16/1987 |
| 4620220 | Wideband chrominance signal filter A color television receiver includes a comb filter responsive to detected video signals for providing a wideband combed chrominance signal, which is coupled to chrominance processing circuits via a composite filter including plural mutually interactive re... | 10/28/1986 |
| 4602276 | Digital signal level overload system A signal overload circuit for use in e.g. a digital TV receiver includes a piecewise linear weighting circuit which weights samples of greater magnitude proportionately more heavily than samples of lesser magnitude. The weighted samples are applied to an ... | 07/22/1986 |
| 4591899 | Color image pickup device Disclosed is a color image pickup device comprising an image pickup device for converting the image beam obtained through the color separating filter into an electrical signal, a detecting device for detecting the signal amount near the sampling frequency... | 05/27/1986 |
| 4584600 | Digital filter for the chrominance channel of a color-television set A digital filter serves to compensate for the reduction in the amplitude of the chrominance-subcarrier reference (fc) caused by the passband of the intermediate frequency stages, and thus to achieve a flat response in the filter's passband within the chro... | 04/22/1986 |
| 4539583 | Digital integrated chrominance-channel circuit with gain control An improved digital integrated chrominance-channel circuit having gain control for color-television receivers includes at least one integrated circuit for digitally processing the composite color signal. The circuit includes a first limiter inserted betwe... | 09/03/1985 |
| 4523223 | Method and apparatus for controlling the digital chrominance signals of a color television receiver Method for controlling the digital chrominance signal of a color television receiver depending upon the amplitude of the burst signal and color contrast, which includes multiplying the digital chrominance signal and the burst signal in a multiplier with a... | 06/11/1985 |
| 4516153 | Composite video signal processing apparatus providing amplitude equalization In a color TV receiver, a composite video signal processing circuit serves to prepare the signal input to a CCD comb filter, and includes a transistor phase splitter with a first load resistor connected to the transistor's collector electrode and a second... | 05/07/1985 |
| 4510521 | Circuit for adjusting the amplitude of a color signal By means of a digital filter, the chrominance signal is separated from the digitized picture signal and is applied to a variable-gain amplifier which is formed by the series arrangement of a shift stage and a multiplier. The two stages are controlled by a... | 04/09/1985 |
| 4482916 | Automatic color control for a digital television receiver An automatic color control (ACC) for a digital television receiver is compatible with and is unaffected by variation of the phase of the color subcarrier signal introduced in demodulating the color subcarrier to effect control of tint. ACC is effectuated ... | 11/13/1984 |
| 4466015 | Automatic color burst magnitude control for a digital television receiver An automatic color burst magnitude control (ACC) for a digital television receiver is compatible with and is unaffected by variation of the phase of the color subcarrier signal introduced in demodulating the color subcarrier to effect control of tint. ACC... | 08/14/1984 |
| 4267560 | Color television receiver for simultaneous display of plural programs A color television receiver receiving two television signals of different channels, compressing the time axis of one of the television signals, and inserting this compressed television signal in a portion of the other television signal for displaying the ... | 05/12/1981 |
| 4266197 | Remote control TV subcarrier phase shifter system The remote control of the subcarrier phase at each of a plurality of television cameras is provided by a digital encoder located near a remote monitor and camera switching network location. The encoder transmits binary coded signals to a color subcarrier ... | 05/05/1981 |
| 4174522 | Composite color signal-handling circuit A composite color signal-handling circuit comprising a phase-shifter for shifting the phase of a composite color signal; a first gate circuit for extracting a chrominance signal out of an output signal from the phase shifter; a second gate circuit for ext... | 11/13/1979 |
| 4158852 | Video signal translating circuit In a color television receiver luminance channel, transistor amplifier stage develops respective versions of input video signals across load resistors in collector and emitter circuits. Capacitor links collector to stage's output terminal, and parallel co... | 06/19/1979 |
| 4151490 | Automatic cable equalizer circuit A cable equalizer is provided for automatically compensating a signal for cable attenuation as the length of the cable is varied. The circuit detects changes in a reference signal that is inserted in the signal being transmitted over the cable. Any deviat... | 04/24/1979 |
| 4135209 | Time-shared sample and hold circuit Circuitry implementing at least two amplitude level detectors and a method for monitoring their ability to track rapid changes in signal level is shown. The monitoring circuit uses a delay network to provide an indication that the detectors have not been ... | 01/16/1979 |
| 4095256 | Differential gain error correction in color television systems In a color television system a first periodic signal having subcarrier frequency is inserted into an amplitude-modulated carrier during line blanking interval with constant amplitude and there is inserted periodically into the first signal, at least once ... | 06/13/1978 |
