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Match Document Document Title
8994883 Display apparatus and display method  
A display apparatus includes a sight line detection unit that detects a line of sight of a user by analyzing user video information, an enhancement processing unit that detects an intersection...
8885105 Systems and methods for performing region-based local contrast enhancement  
Local contrast enhancement comprises obtaining a first frame as a reference frame and a second frame as a current frame. The reference frame is partitioned into a plurality of reference regions,...
8786627 Method for displaying video signal dithered by related masks and video display apparatus applying the same  
A method for displaying a video which is dithered using related masks and a video display apparatus applying the same, the video display apparatus dithering a video signal using a first mask,...
8687013 Method, apparatus and system for providing a color device characterization with a quality evaluation  
A method, apparatus and system for assessing color characterization quality includes a characterization unit configured for determining at least one of a forward and inverse transform from a first...
8619195 Display apparatus and display method  
A display apparatus includes a sight line detection unit that detects a line of sight of a user by analyzing user video information, an enhancement processing unit that detects an intersection...
8233093 Automatic video gain control circuit for positive and negative modulation and method thereof  
Disclosed is an automatic video gain control circuit, which includes an analog to digital converter, an envelope detector and an extreme value detector. The analog to digital converter converts an...
8174623 Image adjustment device and method thereof  
The present invention provides a device and an image adjustment method by simultaneously adjusting the luminance and the chrominance of an image. The device comprises a luminance analysis device,...
8130324 Automatic gain control circuit  
An AGC circuit is provided which includes a first AGC detector circuit that switches whether the AGC voltage is output or not, a second AGC detector circuit that always outputs the AGC voltage, a...
8045063 Apparatus, method, and computer program for processing image, and recording medium storing the computer program  
An image processing apparatus includes a non-linear smoother for smoothing input video data with an edge component thereof preserved, and outputting smoothed video data, a subtractor for...
7956927 Video signal converter and video display device  
A video signal converter has a target pixel setting unit which sets up a position of a target pixel of an input video signal, a position parameter feeding unit which supplies a position parameter...
7773158 Visual processing device, display device, and integrated circuit  
The invention achieves a visual processing device that can execute precise contrast adjustment on image signals that have been input and that does not cause discrepancies in the output timing of...
7667777 Enhanced image display  
A display device comprises a data input unit configured to convert an image signal to a color signal. The display device also comprises a brightness control unit operationally coupled to the data...
7633557 Method and device for adaptive color correction  
The present invention relates to a method and a device for adaptive color correction by weighting procedure according to the pixel luminance so as to adjust the pixel chrominance. The present...
7605872 Video contrast adjusting method and system  
Methods and systems for adjusting color-saturation contrast of the video signal. Statistical information based on chrominance or luminance measures is analyzed to derive a gain function. The gain...
7593066 Chrominance control unit and method for video images  
A color saturation control unit and method for increasing the color saturation of an image is presented. A scaled saturation enhancement factor calculation unit generates a scaled saturation...
7453524 Method and device for image contrast enhancement  
The present invention discloses a method and a device for image contrast enhancement by taking the contribution of image chroma into account so as to define the luminance signal with the chroma...
7443453 Dynamic image saturation enhancement apparatus  
The invention provides an apparatus for dynamically adjusting the saturation of an image signal consisting of a plurality of pixels. The apparatus includes a first transformation module, an...
7443455 Automatic gain control based on multiple input references in a video decoder  
A video decoder (10) for receiving an input video signal and producing output signals for a digital display (12), and involving automatic gain control (AGC) functions (20, 28), is disclosed. For...
7405771 Method and device for independent color management  
The present invention discloses a method and a device for independent color management by using a look-up table (LUT) so as to adjust the color saturation of a single color independently. The...
7345713 Video display apparatus for correcting luminance difference between display pixels  
An analog-to-digital converter converts a video signal into a digital video signal consisting of N bits and outputs the converted signal. A correction value memory stores correction data...
7256841 Projection display apparatus and method for projecting image onto a screen  
A projection-type display apparatus for projecting an image onto a screen includes a light source, a signal processing unit for processing an input image signal to output a first image signal...
7233367 Display apparatus and control method of picture thereof  
An apparatus for and a method of continuously adjusting a brightness and a contrast of a video display. An analog video signal is converted to provide digital luminance (Y) signals and amplitudes...
7206030 Fast-convergence two-stage automatic gain control (AGC)  
Disclosed are methods and systems for automatic gain control (AGC) in circuits. The disclosed methods and systems provide accurate and rapidly converging automatic gain control suited for video...
7154563 Automatic brightness limitation for avoiding video signal clipping  
A brightness limitation system is employed in a television circuit to prevent the black reference voltage level and the video signal from entering a minimum signal clipping zone, to provide...
7113227 Gradation correcting apparatus gradation correcting method and video display apparatus  
The present invention has an object to provide a gradation correcting apparatus for correcting the gradation of the white side of a video luminance signal. The gradation correcting apparatus is...
7110046 Method for dynamically adjusting video brightness  
A method for dynamically adjusting video brightness performs histogram equalization on a video YUV brightness/color signal to generate an equalization brightness curve. The brightness of each...
7095451 Image processing system, projector, information storage medium and black and white extension processing method  
To provide an image processing system, projector, information storage medium and black and white extension processing method which can improve the quality of image when at least one of white...
7064795 Temporal dithering to increase dynamic range of images in sequentially illuminated displays  
A method of increasing image dynamic range by breaking each pixel into two or more time displaced samples that are presented to the display in synchronization with appropriate illumination.
7050114 Picture signal contrast control  
The present invention relates to controlling contrast in at least part of a picture. The contrast control is performed by reducing the saturation (2–4) of the picture during contrast increase (1).
7034896 Gradation correction apparatus  
The present invention provides a gradation correction device which can perform gradation correction using digital feedback processing, and furthermore, can control the digital feedback processing...
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...
6809712 Drive circuit of liquid crystal display, having clip circuit before polarity inversion circuit  
A drive circuit of an LCD is disclosed, by which no image signal having a voltage level over the dynamic range of the video amplifier, and thus erroneous operation of the video amplifier is...
RE38413 Pure red color detection circuit and color compensation circuit using the same  
Red color saturation is increased and red color with higher purity can be reproduced by composing: a red color detection circuit 1 for detecting a red color signal having higher purity by...
6671001 Offset level detection method for auto color gain control of analog video signals  
An offset level detection method for auto color gain control of analog video signals, which is used to find an optimal offset level for determining the input of the auto color gain control. The...
6653991 Device and method for controlling a video signal gain  
A device and a method for controlling a video signal in a video display device controls a magnitude of an RGB video signal by controlling RGB gain values based on RGB count values controlled...
6633343 Dynamic gamma correction apparatus  
An appropriate correction quantity is obtained for a video luminance signal on an individual video basis with a characteristic value, like the maximum or average value, of the luminance signal...
6552751 Video signal processing circuit and color adjusting circuit for color video signal  
A video signal processing circuit for making adjustments of a brightness, a contrast, a hue, and the like of a color video signal by a simple circuit construction. Input video signals which are...
6549317 Apparatus for transmitting image signals  
An apparatus for transmitting over optical cables a red image signal, a green image signal, and a blue image signal output from a personal computer, a clock signal indicative of the starting...
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...
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...
6480241 S-video signal loss compensation processing apparatus and method  
In an S-video signal processor, the luminance signal is amplified and adjusted over selected frequency ranges using a parallel signal for shaping the S-video signal response and permitting the...
6177962 Apparatus and method for preventing oversaturation of chrominance signals  
A chrominance signal C is separated (30) into component vectors U and V and coupled via respective paths each including a controllable gain amplifier (60,62) to respective outputs (56,58). A...
6081302 Image quality correction circuit and method based on color density  
An image quality correction circuit having a variable gain amplifier for amplifying an extracted high-frequency component of a luminance signal in such a manner that the gain thereof is increased...
6064447 Pure red color detection circuit and color compensation circuit using the same  
Red color saturation is increased and red color with higher purity can be reproduced by composing: a red color detection circuit 1 for detecting a red color signal having higher purity by...
6040858 Method and apparatus for expanding the dynamic range of sensed color images  
Disclosed is an image processing method of expanding the dynamic range by determining a saturated or noise region in an image signal and replacing the image signal with a proper image signal. A...
6023304 Image quality correction circuit and method based on color density  
An image quality correction circuit having a variable gain amplifier for amplifying an extracted high-frequency component of a luminance signal in such a manner that the gain thereof is increased...
6023305 Primary color video signal output circuit  
A primary color video output circuit for limiting an input video signal. The circuit includes a clipping circuit, a reference voltage generating circuit and an amplifier. The clipping circuit...
6018373 Image quality correction circuit and method based on color density  
An image quality correction circuit having a variable gain amplifier for amplifying an extracted high-frequency component of a luminance signal in such a manner that the gain thereof is increased...
6016168 Color correction device  
A color correction device, for strengthening or weakening a specific color according to the selection of a user, is provided. In a color correction device, the area of an input color signal is...
6014180 Automatic gain control loop circuit  
In an automatic gain control loop circuit supplied with two channel signals alternately input thereto, a first capacitor filter and stores the first signal output from the level detector circuit,...

Matches 1 - 50 out of 104 1 2 3 >