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8184206 |
Pseudo digital gain control for broadband tuner
A digital level control circuit, such as an Automatic Gain Control, includes a plurality of digitally selectable signal levels with transitions between levels gradually varied to avoid signal...
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8169546 |
Technique for tuner automatic gain control circuit for mobile television applications
A technique for providing stable tracking performance to an AGC loop circuit comprises amplifying a wideband radio frequency signal; detecting signals and blockers adjacent to the radio frequency...
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8159617 |
Universal, highly configurable video and graphic measurement device
An apparatus and method for processing a video signal includes means for receiving the video signal, means for analyzing the video signal based upon a user supplied set of instructions, means for...
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8154663 |
System and method for adaptive contrast enhancement of video signals
A method for contrast enhancement of a video signal comprises receiving a video signal frame, gathering statistics about the video signal frame, calculating the effective input dynamic range of the...
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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...
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8130325 |
Luminance level control device
A scene change detecting circuit (1) detects a scene change of video. An average luminance level operating circuit (2) calculates an average luminance level (APL) of a video signal (VD). A...
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8125500 |
Apparatus for driving a plasma display panel with APL pre-measurement and corresponding method
A picture quality when reducing the brightness or the contrast of the picture on a plasma panel shall be improved. For this purpose there is provided a driving apparatus including...
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8111940 |
Image correction apparatus and method, and image correction program
Which types of subject among a predetermined plurality of types of subject are contained in an image represented by input image data are detected. Features regarding the detected subject types are...
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8106977 |
Image capturing system and image processing method for applying grayscale conversion to a video signal, and computer-readable recording medium having recorded thereon an image processing program for applying grayscale conversion to a video signal
The present invention aims at obtaining a high-quality video signal by reducing tone jumps. A second grayscale conversion characteristic is calculated from a video signal to which a first grayscale...
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8107014 |
Digital receiver and method thereof
A digital receiver includes an analog front-end circuit, an automatic-gain controller, a compensation circuit, and a demodulator. The analog front-end circuit receives an input signal, adjusts an...
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8102473 |
Image correction circuit, image correction method and image display
An image correction circuit capable of preventing a loss of gray levels in a luminance region at the time of the direct current level conversion of a luminance signal to improve the quality of a...
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8102446 |
Image capturing system and image processing method for applying grayscale conversion to a video signal, and computer-readable recording medium having recorded thereon an image processing program for applying grayscale conversion to a video signal
The present invention aims at obtaining a high-quality video signal by reducing tone jumps. A second grayscale conversion characteristic is calculated from a video signal to which a first grayscale...
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8089562 |
Signal processing circuit
A signal processing circuit includes an auto gain control circuit and amplifies a signal with an amplification ratio determined based on a synchronous signal level having a positive potential with...
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8045064 |
Contrast control apparatus and method
A contrast control apparatus includes a memory for storing input image signals within one frame and an image reducing unit for selecting at least one image signal of the input image signals. An...
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8044995 |
Image processor and method for adjusting image quality
An image processor includes: an receiving module configured to receive a video signal of a content; an image quality adjusting module configured to adjust image quality of the video signal received...
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8035738 |
Apparatus and method of controlling black stretch
An apparatus for controlling black stretch includes a black stretching unit, an offset adjusting unit and an output unit. The black stretching unit performs black stretch processing on a video...
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7982804 |
Image processing apparatus and image processing method
Image quality adjustment of an inputted image signal is performed with higher accuracy to display a more preferable image to the user. An attribute information determining unit obtains first...
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7973860 |
Method and apparatus for adjusting contrast of image
This invention relates to an apparatus for processing an input image including M input pixels. Each of the M input pixels respectively has an input gray scale. The apparatus includes a gain...
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7965342 |
Video image display device and video image display method
A video image display device is provided. The device includes an expansion factor deriving unit deriving and outputting an expansion factor for each frame of the video image data, for use in a...
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7948563 |
Apparatus and method for automatically adjusting luminance
Provided are an apparatus and method for automatically adjusting luminance, and more particularly, apparatus and method for automatically adjusting luminance per region in plurality of luminance...
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7945114 |
Image transform method for obtaining expanded image data, image processing apparatus and image display device therefore
It is an object of the present invention to output a clear, expanded image wherein step-shapes or chain-shapes of oblique lines are reduced, distortion is eliminated and no constituent lines of...
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7912314 |
Method to evaluate contrast value for an image and applications thereof
An image contrast evaluation method is disclosed. First, focusing is performed based on the contrast value of an image rendered by a lens on optical sensors, wherein the calculation of the contrast...
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7903178 |
Color management unit
A color management unit is architected to achieve higher-quality appearance used in various video formats and to enable improvements in picture contrast and colorfulness. The color management unit...
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7889282 |
Digital television
A digital television combination integrated circuit is employed which includes a video signal D/A converter which converts a digital video signal to an analog video signal, and an audio signal D/A...
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7880814 |
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...
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7847782 |
Method and apparatus for driving liquid crystal display
A driving method and apparatus for a liquid crystal display is provided in which a contrast ratio of data to be displayed can be expanded and the brightness of a back light can be changed using an...
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7839455 |
Image processing apparatus, image display and image processing method
There is provided an image processing apparatus, an image display and an image processing method which are capable of preventing an unnatural change in image quality to image processing. A...
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7830455 |
TV set and method for managing gain value for each channel
The present invention relates to method for managing gain value for each channel of a TV set, includes steps: signaling a tuner to receive broadcasting signals of the channel in response to a...
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7796713 |
Automatic gain control device and method
An automatic gain control device in a digital broadcast receiver is provided. The device is constructed to include an AGC for receiving an input signal and a predetermined power reference value to...
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7787060 |
Video apparatus and method of controlling the same
A video apparatus having a display module and a method of controlling the same are provided, whereby an electric field strength or automatic gain control (AGC) signal is recognized from a received...
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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...
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7760207 |
Image display adjustment system and method
An image display adjustment system comprises a display setup application executable by a processor and configured to, in response to detecting at least one characteristic associated with a display...
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7736069 |
Moving image display device and moving image display method
To provide a technology for performing brightness range expansion processing suitable for a scene change when a scene change occurs. If an expansion coefficient output mode determination module 250...
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7719724 |
Black-level feedback device, image reading device, and black-level feedback control method
A first set-value calculating unit calculates a first set value of a black-level feedback based on a reflection amount that increases a speed of tracking to a black-level target value in a...
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7705919 |
Video processing device, video display device and video processing method therefor and program thereof
In the video processing device, a correction amount update determining unit determines whether to update a correction amount based on an input image obtained from an image input unit and when a cut...
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7692726 |
Video decoder with integrated audio IF demodulation
An embodiment may include a method to convert a video signal with an analog to digital converter in a video decoder, convert an audio signal with the analog to digital converter, demodulate the...
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7664170 |
Bit stream linear equalizer with AGC loop
A high-speed bit stream interface module interfaces a high-speed communication media to a communication Application Specific Integrated Circuit (ASIC) via a Printed Circuit Board (PCB). The...
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7633558 |
Display device capable of compensating for luminance of environments
A display device capable of compensating for luminance of an environment is disclosed. The display device includes: a sensor, for sensing the luminance of the environment to generate a sensing...
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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...
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7580081 |
Setup level and dynamic range adjustment of an image display apparatus
An image display apparatus includes an input range discriminator which discriminates a type of an input digital video signal, on the basis of a setup level and a dynamic range of the digital video...
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7573533 |
Method of generating transfer curves for adaptive contrast enhancement
Disclosed is a method for generating transfer curves for adaptive contrast enhancement. Transfer curves are generated so as to enhance the bright pixels in mostly dark images and the dark pixels in...
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7564502 |
Automatic gain control analog-to-digital converting system and related method
An analog-to-digital converting system with automatic gain control. The analog-to-digital converting system includes a programmable gain amplifier (PGA) for receiving and amplifying an input signal...
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7545443 |
Image signal processing apparatus and method
In a conventional contrast adjustment circuit, since an entire signal level of a luminance signal is shifted, peak luminance is lowered, and luminance deterioration is undesirably raised. In the...
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7508457 |
Video signal processor circuit and television receiver
A digital Y signal compatible with a plurality of pixels in one frame unit is divided into a plurality of signal level regions for each constant signal level range by means of a histogram generator...
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7499105 |
Compensation circuit for frequency filters
The invention relates to a compensation circuit for filters of a video signal receiver. To compensate a non-linear amplification of a small signal in dependence upon the control of a large signal...
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7483083 |
Movie enhancement
A method for enhancing video or other multimedia in order to achieve a closer-to-movie theater viewing experience. The enhancement method can be applied to YUV or other video formats which are used...
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7477327 |
Analog/digital-compatible front-end module
An analog/digital-compatible front-end module comprises a high frequency amplifier 9 for amplifying a high frequency signal received by an antenna 1; a frequency converter circuit 11 for...
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7471339 |
High-speed video signal processing system
A high-speed video signal processing system, which includes a reception end for receiving analog signals; a plurality of analog to digital converters coupled to the reception end for converting...
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7471344 |
Display apparatus periodically modulating image-signal characteristics
An image display apparatus has a control circuit that periodically varies a characteristic, such as an amplitude characteristic or timing characteristic, of the displayed image signal. Periodic...
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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...
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