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| Number | Title | Issue Date |
| 7250985 | Color demodulation circuit A color demodulation circuit that can complement an unstable state of an output from an ACC circuit and can obtain stable color-difference outputs, regardless of a burst signal in a chrominance carrier signal. Normally, a selector connects an output from a first mul... | 07/31/2007 |
| 7136114 | Television receiver with dynamically adjustable filtering A television receiver includes a tuner stage, a selective filter stage connected to the tuner stage, and a intermediate-frequency stage connected to the selective filter stage. A field-strength-detection stage is also provided, which generates a field strength signa... | 11/14/2006 |
| 7075589 | Color killer adjustment device A conventional method to determine an onset point of a color killer function by design of the external circuit requires physical work to change external parts and their component values varying from one model to another. Therefore, an alternative method to adjust th... | 07/11/2006 |
| 7046305 | Method and apparatus for enhancing green contrast of a color video signal Method and apparatus for automatically enhancing the foliage display of a color signal includes providing the color signal in multiplexed form having alternating first and second components, the first component being substantially aligned with a flesh tone color spa... | 05/16/2006 |
| 6987541 | Video signal processing circuit that can correspond to a plurality of television signal methods A video signal processing circuit. includes: a bell table, a first switch, a carrier generating unit, a second switch and a calculation processing unit. The bell table inputs a color difference signal to output a modulation signal having an amplitude defined by the ... | 01/17/2006 |
| 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 |
| 6947099 | Automatic chroma control circuit with controlled saturation reduction An ACC system includes a controllable amplifier having an input coupled to receive a chroma input signal and an output for providing an chroma output signal of controllable amplitude. A first feedback path, including a cascade connection of means for providing a sig... | 09/20/2005 |
| 6888579 | Method and system for tint control for component video signals A method and system are provided for controlling tint of component video signals. The system includes a first input for receiving a first component video signal; a second input for receiving a second component video signal; circuitry including a first differential a... | 05/03/2005 |
| 6201578 | Apparatus with A/D converter for processing television signal An apparatus for processing television signal including an A/D converter which converts a television signal (a luminance signal) into a digital television signal. A sampling circuit samples television signal data outputted from the A/D converter in respon... | 03/13/2001 |
| 5982975 | Video signal copying apparatus A video signal copying apparatus for copying a signal recorded on a recording medium onto other recording media is provided. The video signal copying apparatus includes a first filter for blocking a color signal and passing a luminance signal of a video s... | 11/09/1999 |
| 5671021 | Image monitoring apparatus having a common interface for commands and input signals and monitor driver therefor A color image monitoring apparatus is capable of controlling the color correction characteristics by external commands. A color correction information memory stores input masking coefficients and γ correction tables. The input masking coefficients can be... | 09/23/1997 |
| 5661530 | Television circuit utilizing color burst signal A television circuit (10) according to the invention includes a multiplier (12), and a voltage signal (V1) is outputted from an LPF (22) in accordance with the presence or absence of a color burst signal which is to be inputted to the multiplier (12). A r... | 08/26/1997 |
| 5654769 | Digital color control and chroma killer device An automatic color control and chroma killer circuit 3 and video processing system is provided that is capable of controlling an amplitude of a color signal and of performing a killer function with a simple construction without using a divider and/or vert... | 08/05/1997 |
| 5627599 | Chrominance signal processing apparatus for digital television receiver A chrominance signal processing apparatus for a digital television receiver, comprising an A/D converter for converting a transmitted analog composite video signal into a digital signal in response to a clock frequency, a luminance/chrominance separation ... | 05/06/1997 |
| 5532829 | Automatic color control circuit having a control signal storing capacitor A control circuit includes: a capacitor for normal reproduction which stores an output of a reproduction color burst level detection for automatic color signal level control in a color signal processing circuit at the time of normal reproduction in a vide... | 07/02/1996 |
| 5452016 | Combined digital color control and chroma killer device An automatic color control and chroma killer circuit 3 and video processing system is provided that is capable of controlling an amplitude of a color signal and of performing a killer function with a simple construction without using a divider and/or vert... | 09/19/1995 |
| 5389979 | Chrominance signal playback system and method for video cassette recorders having noise suppression of the chrominance signal An improved chrominance signal playback system and method for a video cassette recorder are disclosed. A radio frequency of composite video signal detected by a video head is applied to a low-pass filter which filters the composite video signal and output... | 02/14/1995 |
| 4609938 | Digital TV receiver with digital video processing circuit A digital TV receiver includes an A/D converter circuit for converting an analog video signal to a digital video signal, a signal separator circuit for separating a digital chroma signal and a digital Y signal from the digital video signal, a color killer... | 09/02/1986 |
| 4496966 | Method for mixing two color television signals The invention concerns a method and apparatus for mixing a foreground signal and a background signal under the control of a switching signal which is derived as a function of the color of the foreground signal. In response to the switching signal selected... | 01/29/1985 |
| 4419688 | Color-television receiver with at least one digital integrated circuit for processing the composite color signal The color television receiver includes a square-wave clock generator used as a chrominance subcarrier oscillator generating at least four clock signals, the first of which has a frequency four times the chrominance subcarrier frequency, and the second to ... | 12/06/1983 |
| 4415919 | Color signal processing circuit of color television receiver In a color signal processing circuit having first and second chroma amplifiers, a burst amplifier for extracting a color burst signal from an output signal of the first chroma amplifier, a synchronous color killer detector for detecting the color burst si... | 11/15/1983 |
| 4298884 | Chroma amplifier and color killer A chroma amplifier and color killer are described for use in a color television receiver. In a preferred embodiment, the chroma amplifier comprises a first pair of emitter-coupled transistors receiving a current source which has a D.C. operating component... | 11/03/1981 |
| 4253108 | Control for color killer and automatic color limiter A control network and method for a color television receiver is described for enabling and disabling the limiting action of a conventional ACL (Automatic Color Limiter) circuit, for varying the threshold at which a color killer circuit inhibits reproducti... | 02/24/1981 |
| 4207588 | Color killer A hysteresis type color killer is described for use in a color television receiver. Lower power dissipation in the color killer is achieved by adapting an existing transistor stage in the chroma channel as a source of d.c. feedback for the color killer. H... | 06/10/1980 |
| 4151551 | Programmable color enable and sequencing system for secam A programmable color enable and sequencing system for a sequential color and memory television system is provided. An output for sequencing the sequential colors of the SECAM system in a decoder and enabling color if chrominance is present is generated by... | 04/24/1979 |
| 4092667 | Automatic chrominance control and color killer circuits An automatic chrominance control and color killer circuit for use in a color television receiver having a gain controllable chrominance amplifier for selectively amplifying chrominance signals and a color burst signal transmitted with a composite televisi... | 05/30/1978 |
| 4041526 | Control of automatic color control and color killer circuits in video signal reproducing apparatus In apparatus for reproducing a signal recorded on a magnetic tape or other record medium and which includes a signal band containing an information signal, such as the chrominance component of a color video signal, and a reference signal of a predetermine... | 08/09/1977 |
| 3990104 | Circuit arrangement for amplitude controlling an NTSC chrominance signal with high noise immunity Circuit arrangement for processing a NTSC chrominance signal in which the NTSC color synchronizing signal is modulated in phase so that PAL demodulation techniques may be used for obtaining a low-noise amplification control voltage and/or a low-noise colo... | 11/02/1976 |
| 3961360 | Synchronizing detector circuit In a synchronizing detector circuit which has at least two differential transistors, a pair of constant current transistors are connected to the differential transistors, and an output transistor is connected to the junctures between the differential and ... | 06/01/1976 |
| 3945033 | Color eliminating circuit A color eliminating circuit comprises a killer detection circuit, a band amplifier circuit and a control circuit. The killer detection circuit detects a color burst signal in a chromatic signal applied to an input thereof, and delivers a killer output vol... | 03/16/1976 |
