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| Number | Title | Issue Date |
| 7432918 | Video signal processing circuit The video signal processing circuit has a clamp circuit for clamping a composite video signal including a copy guard signal with amplitude of from white to black as well as a pseudo horizontal synchronization signal, a brilliant signal, and a synchronization signal.... | 10/07/2008 |
| 7329181 | Gaming machine with multilayered liquid crystal display for displaying images based on a priority order The gaming machine has the game result display means including the reels (3L, 3C, 3R), the liquid crystal display device (31) arranged at a more front side than a display area of the reels (3L, 3C, 3R) when seen from ... | 02/12/2008 |
| 7304350 | Threshold voltage control layer in a semiconductor device A semiconductor device has a well region having a first conductivity type and formed in an upper portion of a semiconductor substrate, a gate insulating film and a gate electrode formed successively on the well region of the semiconductor substrate, a threshold volt... | 12/04/2007 |
| 7295234 | DC level control method, clamp circuit, and imaging apparatus A dc level control method for holding a dc level of a clamp portion in an electric signal to be a prescribed value is disclosed, wherein the method comprises the steps of: comparing a dc level of a sampling interval in said electric signal with a predetermined refer... | 11/13/2007 |
| 7250986 | External output video signal processor The object of the invention is offering an external output video signal processor, which does not need coupling capacitor or clamping circuit. A system controller outputs a video signal by which the sync. tip level and the pedestal level were fixed to a predetermine... | 07/31/2007 |
| 7233365 | Digital DC restore methods and apparatus Digital dc restore methods and apparatus to restore the DC component of an analog waveform to a quantized reference value level at a given temporal point on a waveform, prior to an ADC. This may used to establish the relationship between the full scale digital value... | 06/19/2007 |
| 7184097 | On-screen display apparatus The present invention provides an on-screen display apparatus which can eliminate variations in the DC level at a time when an input chroma signal and an OSD chroma signal are switched, and prevent an erroneous display of color. The on-screen display apparatus of th... | 02/27/2007 |
| 7176985 | Clamping circuit for video signals An apparatus, system and method for clamping a video signal input to a coupling capacitor (215) for providing a clamping voltage. A charging current is applied to the capacitor (215) via an amplifier (225) having a first input (227) coupl... | 02/13/2007 |
| 7126645 | Back-porch clamp The invention teaches a method, means and apparatus for clamping a back porch interval of a video signal including clamping a sync-tip level of said video signal to a variable reference voltage, comparing a back-porch voltage level of the sync-tip clamped video sign... | 10/24/2006 |
| 7106231 | Video signal processing system including analog to digital converter and related method for calibrating analog to digital converter A video signal processing system capable of adjusting errors and related methods are introduced. The video signal processing system and related calibration methods utilize the characteristic of periodic breaks of video signals to perform various kinds of calibration... | 09/12/2006 |
| 7023497 | Clamping circuit with wide input dynamic range for video or other AC coupled signals A clamping circuit disclosed herein has two modes of operation which include both a bottom level and mid-level clamping mode for clamping automatically onto the sync tip of a video signal and customizably clamping onto the front porch, back porch/pedestal or anywher... | 04/04/2006 |
| 6967691 | Color difference signal processing A color video display signal processor comprises a source of a color difference signal and an analog to digital converter for converting the color difference signal to a digital signal. A potential divider is coupled to reference voltages of the analog to digital co... | 11/22/2005 |
| 6956621 | High impedance digital full line video clamp A circuit for clamping a TV signal includes an input capacitor coupled to the TV signal, an analog-to-digital converter that outputs a digital signal corresponding to TV signal, a comparator that compares the digital signal to a black level signal, and a high impeda... | 10/18/2005 |
| 6738098 | Video amplifier with integrated DC level shifting A method and apparatus within a television receiver for electronically aligning signals within the receiver by controlling support circuitry for an IF module. A video amplifier is coupled to an output of the IF module. A control voltage source (DAC 114) contr... | 05/18/2004 |
| 6714208 | Method of displaying monochromatic image on color monitor and image display apparatus for implementing the method The method of displaying a monochromatic image on a color monitor and the image display apparatus display the monochromatic image on a color display device with red, green and blue cells as a unit pixel. In the method and apparatus, all density regions of the monoch... | 03/30/2004 |
| 6657619 | Clamping circuit for liquid crystal display device A clamping circuit for supplying a clamped color signal to a gamma-correction circuit is provided with a clamping portion connected to a clamping voltage generating circuit. The clamping voltage generating circuit generates a clamping voltage in response ... | 12/02/2003 |
| 6507373 | Video stabilizing circuit for display apparatus In a video stabilizing circuit for a display apparatus, the clamp levels of R, G and B chromatic signals are controlled by feeding back the output currents of respective R, G and B terminals so that real time responses can be made, as against the fluctuat... | 01/14/2003 |
| 6339435 | Device to automatically adjust video signals to a blanking level and method therefor A device to automatically adjust video signals to a blanking level to realize a precise intended color by being fed back with video signals at the blanking level stored in an ASIC (application-specific integrated circuit), which stores video signals at a ... | 01/15/2002 |
| 6204882 | γ matching of a video processor by means of three measured currents Recent circuit concepts inject measurement lines, for cutoff and drive control of the cathode current, into each color channel during the vertical frame blanking period. Owing to the physically dependent exponential beam current characteristic profile as ... | 03/20/2001 |
| 5841488 | Multiple video input clamping arrangement An apparatus having a selectable first mode of operation for clamping an input signal to a first reference level and a selectable second mode of operation for clamping a signal derived from the input signal to a second reference level.... | 11/24/1998 |
| 5798802 | Video signal clamping circuit A video signal clamping circuit for adapting the DC level of a composite video signal to the processing range of a digital video signal processing device, includes an isolating capacitor in the analog video signal path and a controlled current source whic... | 08/25/1998 |
| 5532758 | Feedback clamp circuit for analog-to-digital conversion An image processing apparatus includes an analog image signal clamp and an A/D converter that converts the analog image signal into an m bit digital signal. The clamp is controlled in accordance with an n+1 (m>n) bit digital image signal converted by the ... | 07/02/1996 |
| 5504538 | Video signal processor for controlling the brightness and contrast of a display device A video signal processor for controlling a displayed image on a CRT having a cathode electrode and a grid electrode includes a generator for generating a brightness reference signal, an adder for adding the brightness reference signal to a black level in ... | 04/02/1996 |
| 5477260 | Apparatus for reducing a level difference between image signals An object of this invention is to reduce level differences and errors in a luminance signal and color difference signals. In order to achieve the above object, an image pickup apparatus has an image sensor for photoelectrically converting an object image ... | 12/19/1995 |
| 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 |
| 5345279 | Image signal processing apparatus with analog to digital image conversion An image signal processing apparatus wherein the black level of an analog image signal is adjusted by controlling the clamp level of the inputted analog image signal. The clamped analog image signal is digitalized. Using the digital image signal offset to... | 09/06/1994 |
| 5343255 | Video processing circuit with IF AGC loop, auxiliary video clamp and shared reference voltage source formed on common integrated circuit A clamp system for use in a television receiver having tuner and auxiliary video sources, comprises an IF AGC and video detector circuit having an AGC reference voltage input and an auxiliary video input signal clamp circuit having a reference voltage inp... | 08/30/1994 |
| 5249063 | Information signal processing device for offset removal and signal identification of color difference signals A signal processing device for processing an information signal is arranged to detect a signal included in the information signal and appearing during each given blanking period of the information signal in which a plurality of kinds of signals appear in ... | 09/28/1993 |
| 5185656 | Circuit for compressing image signal An image signal compressing circuit for compressing an input image signal non-linearly including an attenuating circuit for attenuating the input image signal to derive an attenuated image signal, a capacitance for removing a direct current component of t... | 02/09/1993 |
| 5101265 | SECAM color signal processing device A SECAM chroma signal is filtered and supplied to a single axis demodulator, which demodulates first and second chroma signal components modulated with two carriers having frequencies above and below a center frequency, as well as an identification signal... | 03/31/1992 |
| 4998170 | Direct current restorer A direct current restorer applied to a pedestal clamp circuit of a television receiver in which an input video signal is compared with a pedestal level setting reference signal for every pedestal period, and, based on difference between the pedestal level... | 03/05/1991 |
| 4814882 | Monitor television apparatus A composite video signal from a television tuner which performs a diversity function is input to a demodulator which performs signal processing such as reproduction of a DC component through clamping of the pedestal level and a color demodulation. The com... | 03/21/1989 |
| 4725882 | Scrambled video signal processor A scrambled video signal processor comprises an amplifier for outputting a noninverted video signal and an inverted video signal, a timing pulse controller for generating first and second timing pulses at a pedestal position in an arbitrary horizontal syn... | 02/16/1988 |
| 4682231 | Brightness and contrast adjusting apparatus A brightness and contrast adjusting apparatus which adjusts the brightness and contrast of a cathode ray tube of a television receiver, comprises an inserting circuit (2) for inserting first and second reference signals PC and PY int... | 07/21/1987 |
| 4663668 | Brightness clamping apparatus for TV receiver with multiple inputs A television receiver is arranged to selectively display images from several input signal sources--such as pix-in-pix, teletext, computer graphics, besides displaying pictures from the normal off-the-air television signal. In accordance with this inventio... | 05/05/1987 |
| 4660085 | Television receiver responsive to plural video signals A television receiver is arranged to selectively display either information from a broadcast television signal, or information from an auxiliary video signal. The black image reference level associated with the broadcast signal information is sampled and ... | 04/21/1987 |
| 4660084 | Television receiver with selectable video input signals A television receiver is arranged to selectively display either information from a broadcast television signal or information from an auxiliary video signal, in accordance with the position of a switching network to which the signals are capacitively coup... | 04/21/1987 |
| 4612577 | Video signal processor with selective clamp A television receiver includes an interface network for selectively coupling either a standard broadcast television signal, or auxiliary analog or digital video signals, to an image display device. The interface network includes a keyed circuit for clampi... | 09/16/1986 |
| 4414572 | Clamp for line-alternate signals A clamp for television signals, the sources of which alternate on a line recurrent basis includes a plurality of capacitors having a common terminal coupled to the sources of signal and a multiplexing switch for sequentially connecting one of the capacito... | 11/08/1983 |
| 4301474 | Residual clamp error compensation circuit An apparatus for matching the blanking levels of two television video signals is disclosed. When the vertical interval reference signal or any other signal (e.g., sync) is inserted on a program video signal their blanking levels should be matched. The app... | 11/17/1981 |
