Celebrity Inventors
Glam girl Heddy Lamar may have used her good looks to good effect on the silver screen, but she put her smarts to better use as an inventor. During World War II, she co-patented a frequency-switching system for torpedo guidance that was considered years ahead of its time.
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| Number | Title | Issue Date |
| 7376210 | Apparatus and method for performing adaptive channel estimation in a mobile communication system Disclosed is an adaptive channel estimator for improving a performance of a general channel estimator in a mobile communication system, and a method for controlling the same. The adaptive channel estimator further detects a noise level of a channel and a channel spe... | 05/20/2008 |
| 7324078 | Display apparatus and control method thereof offsetting a noise section contained in video signal A display apparatus including an offset value setting input part to specify an offset value for a DE signal determining an effective area of a video signal; and a DE signal generator to generate the DE signal depending on the offset value. With this configuration, t... | 01/29/2008 |
| 7259799 | AGC detector and method for AGC detecting Disclosed is an AGC detector device and an AGC detecting method for television receivers displaying video pictures consisting of a plurality of horizontal lines to be built up successively, wherein a CVBS signal is inputted which includes horizontal sync pulses havi... | 08/21/2007 |
| 7110042 | Synchronization signal decoder and associated method The invention relates to a synchronization signal decoder and associated method for improving digital image display. A composite video stream includes a distortion compliant signal and a synchronization signal. A level shift circuit is adapted to shift a voltage lev... | 09/19/2006 |
| 7106386 | Device and method for improving picture quality A picture quality improvement device has two-dimensional low-pass filter that takes as input a luminance signal YIN that is obtained from a video signal and that extracts low-pass components for a vertical direction and a horizontal direction of the input luminance ... | 09/12/2006 |
| 7043093 | Program for processing image, recording medium of the program and method of and apparatus for processing image At first, average brightness of each of frames of a moving image is calculated by a computer. Following that, a moving average along a time axis is calculated for each of the frames so that moving average brightness is generated as a reference data of brightness. Ne... | 05/09/2006 |
| 6968154 | Avoidance of interference between items of electrical apparatus The invention relates to the simultaneous operation of items of electrical apparatus, such as but not exclusively, a broadcast data receiver and a DECT telephone system. A problem with this type of apparatus is that the operating frequencies of the same can overlap ... | 11/22/2005 |
| 6714258 | Video-apparatus with noise reduction A video apparatus includes a circuit for reducing noise in applied input video signals. The noise reducing circuit is provided with a temporal noise filter (S1, LUT, M), a down-sample unit (D) for obtaining a spatial down-sampling of video signals (Vi) of sub... | 03/30/2004 |
| 6542202 | Video signal processing apparatus improving signal level by AGC and frame addition method A video signal processing apparatus capable of improving signal level while reducing noise component no matter a video signal of what illuminance is input is provided, which apparatus includes a video signal amplifying circuit amplifying an input video si... | 04/01/2003 |
| 6512339 | CRT display device In a CRT display device including a CRT (MM tube) having brightness higher than that in the background-art CRT, it is an object of the present invention to improve contrast and prevent conspicuous recognition of noises. A video signal modulation circuit (... | 01/28/2003 |
| 5986719 | Video signal clamping method and apparatus with negative peak detection A video clamping apparatus is described which uses transistors manufactured in a CMOS process to clamp an input video signal to a reference level during a SYNC period. A closed-loop system is provided which includes a buffer amplifier, a sample-and-hold d... | 11/16/1999 |
| 5841563 | Method and system for efficient optical transmission of NTSC video A technique for delivering analog video over fiber-to-the-home (FTTH) networks addresses a fundamental problem of the standard signal format, i.e., power budget constraint, by increasing the usable optical signal efficiency. In particular, a technique is ... | 11/24/1998 |
| 5708580 | Video signal stabilization An apparatus for stabilizing an unmodulated video signal that has a sync tip voltage includes an amplifier for amplifying the video signal according to a control voltage, a transistor receiving the amplified video signal from the amplifier on the base of ... | 01/13/1998 |
| 5512958 | System for controlling the effects of noise in television receivers A television receiver having a microprocessor controlled disturbance control system that can operate totally under user control or automatically. The microprocessor generates an on-screen menu which presents noise control options to the user. In the prefe... | 04/30/1996 |
| 5410364 | Method and apparatus for removing AGC pulses and other undesirable signals from a video signal AGC pulses and other undesirable signals are removed from a video signal by generating a replica of the AGC pulses or other signals and then mixing the replica with the original video to effect their removal.... | 04/25/1995 |
| 5361101 | Preamplifier for multimedia display An RGB preamplifier for a video display includes respective multipliers independently operable for adjusting the contrast of input primary and secondary video signals. The contrast adjusted video signals are added to form a combined display signal, the co... | 11/01/1994 |
| 5260792 | AGC circuit with 60 hertz hum compensation An AGC circuit comprises an AGC filter, a hum detection circuit, and a time constant control circuit. The hum detection circuit detects a hum component included in an AGC signal. The time constant control circuit automatically controls the time constant o... | 11/09/1993 |
| 5225898 | Noise reduction apparatus for television receiver A noise reduction apparatus for use in a television receiver or VCR using the NTSC format, in which a video signal or a demodulated color difference signal is processed by an operational circuit which supplies a noise-reduced output signal to a first one ... | 07/06/1993 |
| 5133009 | Method and apparatus for defeating the operation of an IC built-in noise inverter Apparatus for defeating a noise inverter disposed within the IC includes circuitry for changing the amplitude of the AGC signal applied to an AGC amplifier prior to the noise inverter so as to lower the level of the signal fed to the noise inverter. As a ... | 07/21/1992 |
| 5113439 | CATV terminal and video apparatus having a noise eliminating circuit In a CATV terminal or a video apparatus such as a TV receiver, noises superimposed on a DC part of a horizontal synchronizing signal of a video signal are eliminated by integrating the DC part or replacing the DC part with an appropriate constant voltage.... | 05/12/1992 |
| 4951315 | Video signal noise evaluation and removal circuit By extracting a high frequency A.C. signal from the tips of the horizontal sync pulses, and sensing for the presence of pulses occurring at abnormal times, an extremely simple method of both measuring and removing unwanted noise and noise pulses in a base... | 08/21/1990 |
| 4901150 | Automatic noise reduction for individual frequency components of a signal A method and system for separating a noise signal into frequency components, then automatically performing noise reduction on the individual frequency components, and then recombining the processed frequency components to generate an output noise signal. ... | 02/13/1990 |
| 4827511 | Automatic gain control circuit for controlling gain of video signal in television receiver An intermediate-frequency automatic gain control circuit generates an IFAGC voltage for controlling the gain of an IF amplifier, in accordance with the level of the output signal of the IF amplifier. An RFAGC voltage provides a voltage for controlling the... | 05/02/1989 |
| 4807035 | Signal measurement Apparatus for measuring the noise present in a video signal is adapted to operate on a spare line of the video field. An AGC circuit is used in which a known amount of gain is applied to the input signal and compared with the reference signal. A feedback ... | 02/21/1989 |
| 4706285 | Automatic gain control of a scrambled video signal A television receiver receives a scrambled television signal of the suppressed sync pulse type. The sync pulse is restored by a decoder which provides a sync restored video signal to video signal processing circuits of the receiver, and to automatic gain ... | 11/10/1987 |
| 4682087 | Apparatus for controlling amplitude of vertical deflection signal An amplitude of a sawtooth signal of a vertical period of a television signal is controlled. A level discriminating circuit 7 discriminates whether or not the amplitude of the sawtooth signal of the vertical period lies within a level of an almost proper ... | 07/21/1987 |
| 4654710 | Contrast amplifier for video images A contrast amplifier for video images comprises means for computing a mean value Mg of luminance of all the points of a field, means consisting of a horizontal filter and a vertical filter for computing a local mean value Mv of lumin... | 03/31/1987 |
| 4630117 | Automatic gain control system An automatic gain control system which measures the noise content of a received video signal and adjusts the gain of a radio frequency amplifier and a tuner to compensate for variations in noise levels. The apparatus uses a high frequency filter to strip ... | 12/16/1986 |
| 4620312 | Pulse signal processing circuit A pulse signal processing circuit includes a NAND circuit that accepts periodic input pulses and an upper-limit detection signal from an upper limit detector and, when both an input pulse and the upper-limit detection signal are present, provides a settin... | 10/28/1986 |
| 4506298 | Method and apparatus for displaying objects on an interlaced raster scan television screen A method and apparatus for improving the display of objects on an interlaced raster-scan television are disclosed. The invention takes each data point that will appear as a pixel on the screen and makes it appear also at pixel locations displaced by one u... | 03/19/1985 |
| 4417277 | Television receivers An output of a noise canceller which cancels a noise component from within a composite video signal is applied to an input of an AGC detector which generates an AGC voltage for controlling the gain of a video intermediate frequency amplifier. A circuit co... | 11/22/1983 |
| 4408229 | Noise sensitivity reduction apparatus for a TV receiver AGC system The composite video signal input to the voltage comparator of a TV receiver AGC system is subjected to the filtering action of a low pass filter for noise suppression purposes. A wideband signal path, bypassing the low pass filter, is enabled during trail... | 10/04/1983 |
| 4393354 | Crossover circuit for use in automatic gain control systems A unity gain, closed loop, feedback amplifier is described which accurately defines the changeover point in an AGC system to provide a first output which varies in response to an AGC input signal and is indicative of the level thereof up to a predetermine... | 07/12/1983 |
| 4360929 | Automatic gain control circuit An AGC circuit includes an amplitude synchronous detector using a phase-locked loop (PLL), a variable gain amplifier for supplying a signal to this detector, and a means for controlling the amplification degree of the amplifier to make the output signal l... | 11/23/1982 |
| 4292598 | Automatic gain control circuit An automatic gain control circuit includes a VCA, an AGC detector and an AGC time constant circuit which form an AGC loop. The AGC circuit further includes a level detector and a time constant designator. When the level detector detects an excess level of... | 09/29/1981 |
| 4234892 | AGC Circuit responsive to intermediate gray level in video signal An AGC circuit comprises a video IF amplifier for receiving a amplitude-modulated broadcast wave of a video signal with a signal level having a constant amplitude added thereto, a means connected to the output of said amplifier for generating a video dete... | 11/18/1980 |
| 4228460 | Method and apparatus for compensation of time base errors Method and apparatus for compensating for variations in the time base of a video signal reproduced in a longitudinal video tape recording system. The signal is passed through a charge-coupled device clocked by a variable rate clock signal to correct for t... | 10/14/1980 |
| 4212032 | Synchronization and gain control circuit A circuit is provided for developing a television synchronization signal and an automatic gain control (AGC) signal. A composite video signal is coupled to the input of a D.C. threshold noise inverter which inverts impulse noise above a predetermined thre... | 07/08/1980 |
| 4204229 | Video contrast expanding arrangement An arrangement which enables a contrast range to be defined for the video signal between two adjustable potential levels and thus an increase in contrast to be obtained when the signal intended for an image display varies within a more restricted range. I... | 05/20/1980 |
| 4042959 | Noise suppression circuit A noise suppression circuit for suppressing or cancelling noise pulses in a composite video signal coupled to television receiver synchronizing pulse separator and automatic gain control circuits is shown. Noise pulses in the video signal exceeding the am... | 08/16/1977 |
