Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 7940332 | Signal detection device and methods thereof A device for detecting synchronization pulses in a video signal is disclosed. The device includes a transistor. The base-emitter voltage of the transistor is maintained below a threshold level in response to receiving active video information. The base-emitter volta... | 05/10/2011 |
| 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 |
| 7313333 | Apparatus for controlling decision threshold voltage to optical receiver Disclosed herein is an apparatus for controlling a decision threshold voltage to an optical receiver, which is capable of automatically controlling the decision threshold voltage to the optical receiver appropriately to signal level decision on the basis of a low-fr... | 12/25/2007 |
| 7277136 | Adaptive bandwidth control in a kinescope amplifier A method for controlling dissipation in a video amplifier for a display signal. The method comprises the steps of setting a first current for establishing a first gain bandwidth product in the video amplifier. Generating a control signal in accordance with a slew ra... | 10/02/2007 |
| 7176979 | Synchronization pulse detection circuit A synchronization pulse detector includes an absolute value independent shape detector for processing samples of an input signal having a synchronization pulse and a plurality of non-synchronization pulses to determine whether such samples have a predetermined seque... | 02/13/2007 |
| 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 |
| 7046301 | Vertical synchronous signal detection circuit A vertical synchronous signal detection circuit includes an analog-digital converter, an average calculation circuit and a compare circuit. The analog-digital converter receives a composite video signal and converts the video signal into a digital signal having a ve... | 05/16/2006 |
| 7042270 | Interface system between controller IC and driver IC, and IC suitable for such interface system A disk controller IC (11), driven by a first supply voltage (V1), is provided with a push-pull type output circuit having an output terminal (P1). The output circuit may be turned ON/OFF by a control signal. On the other hand, disk driver IC ( | 05/09/2006 |
| 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 |
| 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 |
| 6940561 | Automatic modulation and RF carrier level control of sync suppressed television signals The depth of modulation and the absolute RF carrier level of an amplitude-modulated video signal are automatically adjusted. For adjustment of the depth of modulation, a sync tip of the video signal is sampled, corrected and normalized to a reference level, e.g., a ... | 09/06/2005 |
| 6823016 | Method and system for data management in a video decoder A method and system for minimizing bus traffic in a video decoder is disclosed. A method and system for processing a portion of a reference picture includes designating the reference picture, selecting a display picture within the reference picture, transmitting a d... | 11/23/2004 |
| 6169584 | Automatic modulation control of sync suppressed television signals The depth of modulation and the absolute RF carrier level of an amplitude-modulated video signal are automatically adjusted. For adjustment of the depth of modulation, a sync tip of the video signal is sampled, corrected and normalized to a reference leve... | 01/02/2001 |
| 5953069 | Sync separator circuit Sync separator and video detector circuits, including a sync tip clamp having symmetrical and non-symmetrical clamps. The symmetrical clamp clamps the input video signal to a reference voltage during composite sync pulses, so the coupling capacitor discha... | 09/14/1999 |
| 5867222 | Video sync signal slicing using variable gain control A video sync slicing circuit is disclosed that employs an adjustable gain control (AGC) amplifier and circuitry that adjusts a gain of the AGC amplifier such that a blanking level of the video signal at an output of the AGC amplifier equals a blanking ref... | 02/02/1999 |
| 5818538 | Sync on green signal separating circuit of an image output apparatus A sync signal separating circuit of an image output apparatus includes an inversion amplifying section for providing a green video signal supplied from a video signal generator to be output as an output signal that is inverted and amplified, and a clipper... | 10/06/1998 |
| 5774185 | Method of and apparatus for removing equalizing pulses without using external pins A circuit for removing every other equalizing pulse from a signal representing the sync pulses of a composite video signal, generates an output signal representative of every horizontal synchronization pulse and every other vertical synchronization pulse ... | 06/30/1998 |
| 5528303 | Synchronizing signal active filter and method An integrated active filter and sync separator circuit operates on precision internal reference sources to set the filter cut off frequency as a function of resistance of an external resistor. The active filter eliminates the source of sync tip crushing a... | 06/18/1996 |
| 5502500 | Circuit for extracting a synchronization signal from a composite video signal, in MOS technology A circuit that extracts the synchronization signal from a composite video signal. The circuit includes a stage for aligning the low level of the synchronization signal interval with a reference voltage; a stage for detecting the signal suppression level a... | 03/26/1996 |
| 5497201 | Sync chip clamping/sync separator circuit Reductions in size and cost for a sync chip clamping/sync separation circuit are envisaged by the use of the CMOS process. The final output amplification section of a differential amplifier circuit is implemented as a P channel FET, and the pull down curr... | 03/05/1996 |
| 5162909 | Television signal processing circuits Apparatus for separating sync and video includes a luminance signal coupling capacitor, a keyed clamp circuit coupled to a source of back porch keying pulses for clamping a back porch interval of the composite luminance signal to a reference direct voltag... | 11/10/1992 |
| 5053869 | Digital circuit arrangement detecting synchronizing pulses In a digital circuit for detecting horizontal or vertical synchronizing pulses in a digital video signal, the video signal is applied to a level detector which supplies an extreme value signal which indicates the level of the synchronizing pulse at the en... | 10/01/1991 |
| 5045943 | Synchronous signal separation circuit A circuit for separating a synchronous signal from a video signal including a comparator and a bias circuit. The comparator is adapted to receive a video signal which also includes a synchronous signal. The comparator generates a pulse signal whose voltag... | 09/03/1991 |
| 4918525 | Method and device for precision sync pulses separation A method based on clamping of composite video signals on sync level and on level black, summation of the two differently clamped signals and comparing with the constant clamping level. Processing is simplified and the slicing precision is improved. The de... | 04/17/1990 |
| 4860100 | Synchronization system for a semi-digital signal A system which provides synchronization with frame synchronization words of a partially digital signal, such as that of the D2MAC television standard. It is provided that three modes of operation are established sequentially. In a first mode, the values n... | 08/22/1989 |
| 4821098 | Circuit for deriving a synchronizing signal contained in an incoming video signal A circuit for deriving a synchronizing signal contained in an incoming video signal, having a pulse generator generating the synchronizing signal when the incoming signal reaches a threshold value. This treshold value corresponds to a level located betwee... | 04/11/1989 |
| 4812907 | Sync pulse separator system A method and apparatus for separating sync pulses by charging a capacitor to the sync tip voltage level during occurrence of a sync pulse and discharging the capacitor to the back porch voltage level for an equal duration. The discharge duration is determ... | 03/14/1989 |
| 4745477 | Antijitter arrangement for synchronizing pulse separator A synchronizing pulse separator for a video apparatus provides horizontal and vertical synchronizing pulses from a composite video signal. The sync separator incorporates a compensation circuit that achieves noise immune operation with composite video sig... | 05/17/1988 |
| 4723165 | AC coupled sync separator system with filter DC feedback A novel method and apparatus of AC coupling composite video sync information to a sync separator circuitry with digital controlled filtered DC feedback is described. An AC coupling circuit such as a capacitor provides an intermediate signal in response to... | 02/02/1988 |
| 4707740 | Sync detector having noise adjusted slice level A sync detector is provided for recovering or extracting a sync signal from a video signal. The circuitry includes a slice level comparator for comparing the video signal against a slice level signal for providing a sync signal in dependence upon the comp... | 11/17/1987 |
| 4698679 | Sync separator A sync separator detects, in a corresponding part of the waveform of a video signal, the occurrence of the trailing edge of a corresponding sync pulse, in accordance with the rate of change of the video signal. Information obtained from the sync tip and t... | 10/06/1987 |
| 4697211 | Sync separator with periodic updating A sync separator detects the occurrence of a corresponding sync pulse in a corresponding part of the waveform of a composite video signal. The level of the sync tip is used for updating a slice level signal, provided the level of the sync tip is lower tha... | 09/29/1987 |
| 4635115 | Synchronous separation circuit A synchronous separation circuit comprises a capacitor, one end of the capacitor serving as an input terminal for receiving a synthetic video signal, a first C-MOS inverter, an input terminal of which is connected to the other end of the capacitor, a firs... | 01/06/1987 |
| 4628361 | Video synchronizing signal separator An improved video synchronizing signal separator for separating luminance and synchronizing signal components, respectively, from a composite video signal. Separate luminance and synchronizing channels are supplied with the composite video signal, each ch... | 12/09/1986 |
| 4622586 | Digital slicer having a pulse-width locked loop A bit-decision circuit or slicer for a digital communications receiver includes a first comparator which compares the received signal level with a reference slicing level. In order to have the lowest error rate, the reference slicing level must be control... | 11/11/1986 |
| 4621288 | Reference time detecting circuit A reference time detecting circuit for detecting a predetermined transit of a synchronizing signal taken as a reference time of a video signal detects the reference time by using a masking pulse including the predetermined transit and the video signal. Th... | 11/04/1986 |
| 4621289 | Digital sync separator and differentiator Composite sync is separated from video despite noisy, weak, or nonstandard signal conditions. Sync is separated from the composite video signal by comparing the video signal to a D.C. reference voltage which is generated depending upon the particular char... | 11/04/1986 |
| 4506297 | Integrated circuit for television receivers comprising a sonic separator with a clamping circuit To prevent the separation-level shift occurring in the clamping circuit during the transmitted vertical synchronizing pulses or during prolonged interference pulses, a pulse opening an electronic switch (S) inserted between the clamping circuit and one RC... | 03/19/1985 |
| 4414569 | Transistor circuit The present invention provides a transistor circuit suited for a synchronizing signal separator. More particularly, the transistor circuit can separate the noise-free synchronizing signal from a composite video signal. The transistor circuit comprises a t... | 11/08/1983 |
| 4385319 | Synchronization signal separating circuit A synchronization signal separating circuit for deriving synchronization signals from a composite video signal, a clamp circuit which clamps the sync chip level of the composite video signal to a reference voltage level, a detection circuit which detects a vol... | 05/24/1983 |
