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Class 348/657 - Including feedback control


Subclass of Class 348 - Television
Definition: Subject matter including a sensor to detect the operation
No. of patents: 44
Last issue date: 04/15/2008


1    
NumberTitleIssue Date
7358994Image processing apparatus, image processing method, recording medium thereof, and program thereof
In image processing apparatus and method for displaying and printing a person image photographed by a digital camera, it is possible to automatically correct image data and output the person image of an optimum characteristic. In this apparatus, an image obtaining p...
04/15/2008
7224340Method of processing signal of LCM timing controller
A method of processing signals of a timing controller of a liquid crystal display module, wherein the signals are processed according to a rising edge or a falling edge of a synchronizing signal to generate the control signals for the liquid crystal display module, ...
05/29/2007
7157924Method and apparatus for on-die voltage fluctuation detection
An on-die device is provided to measure/detect voltage fluctuations. This may include a control unit to generate differential reference signals (such as differential current signals), a first detector unit and a second detector unit. The differential reference signa...
01/02/2007
7126644Rapid white balance method for color digital images
A rapid white balance method for color digital image is disclosed. This method is applied to RGB color regions in an image. First, the image is divided into several blocks to obtain the G parameter, then the averaged R and B parameters of each block, thereby obtaini...
10/24/2006
7000160Semiconductor integrated circuit and a method of testing the same
A semiconductor integrated circuit (LSI) in which control information for determining a voltage or a width of a pulse produced itself can easily be set in parallel with other LSIs, and set information can be corrected easily. From an external evaluation device, a vo...
02/14/2006
6958785Method and apparatus for determining and correcting for illumination variations in a digital projector
The need is met according to the present invention by providing a method of correcting pixel by pixel variations in a display, the method including the steps of creating a defect map of pixel intensity offsets for the display; correcting an input signal according to...
10/25/2005
6947060Image 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
6937288Beam current limiting circuit for use in a video projector
In a beam current limiting circuit for a video projector, an average current is limited under closed loop control containing an anode current detection circuit 5. On the other hand, a cathode current detection circuit 107 comprises a first resistor and...
08/30/2005
6937287Video processing apparatus and method
In order to reduce the total capacity of a ROM used for adjustment of the black level and the white level of a digitized luminance signal for a television receiver, for example, a comparator compares the input luminance signal with a predetermined threshold value, a...
08/30/2005
6933967Color reference system for display monitor
A color calibration system includes a visual display terminal (VDT), a color calibration sensor optically coupled to the VDT, and a computer processing unit (CPU) electrically coupled to the VDT and the color calibration sensor. The VDT has a display screen and a pl...
08/23/2005
6909463Camera having verification display and white-compensator and imaging method
In a camera and method, a white-compensator propagates neutral light at a preset color temperature independent of a displayed electronic image. The camera has a body and an electronic imager disposed in the body. The imager generates an electronic image responsive t...
06/21/2005
6900784Display apparatus with luminance adjustment function
A display apparatus is capable of displaying an image at a proper luminance based on an input video signal without being influenced by temperature changes or time-dependent changes. The display apparatus is provided with a monitoring circuit constituted by a monitor...
05/31/2005
6897901Circuit for combining AKB and selective beam current limiting and projection television system utilizing same
A control circuit for use in a video processor utilizes combined automatic kinescope bias (AKB) control, and average individual beam current sensing and limiting in at least one CRT. The control circuit includes automatic kinescope bias (AKB) control circuitry for d...
05/24/2005
6717625Method and device for adjusting one or more projectors
Method for adjusting one or more projectors, each projector generating a number of light beams of different color, characterized in that the projected picture (9-9A) is automatically adjusted during normal use of the projector (1-1A)....
04/06/2004
6704008Non-uniformity correction for displayed images
An image display apparatus including an image correction section, a data storage device, and an image forming section. The image correction section corrects levels of given image data in accordance with the correction data stored in the data storage devic...
03/09/2004
6636274Image display device
When an anomaly occurred in an optical system or light sources of a rear projection TV in which laser beams are employed as a light source, the anomaly is detected by sensors, the detected anomaly is transmitted to a microcomputer, and according to a sign...
10/21/2003
6556254Black and white level stabilization
In a black and white level stabilization device, an OSD signal generator (OSD-SG) generates black and white reference signals (OSD-R/G/B), amplifying circuits (VA-R/G/B) amplify the black and white reference signals (OSD-R/G/B) or RGB signals (Ri, Gi, Bi)...
04/29/2003
6529247Automatic white balance adjusting circuit in color image display
A detector circuit detects a voltage corresponding to the leakage current that flows through the cathode electrode of a color display during a vertical blanking period of a video signal. The voltage detected is held in a first sample-and-hold circuit. Mea...
03/04/2003
6437833Automatic white balance adjusting circuit in color image display
A detector circuit detects a voltage corresponding to the leakage current that flows through the cathode electrode of a color display during a vertical blanking period of a video signal. The voltage detected is held in a first sample-and-hold circuit. Mea...
08/20/2002
6433769Compensation circuit for display contrast voltage control
The present invention discloses a contrast control method and circuitry for setting and compensating the contrast of a liquid crystal display (LCD). The present invention has circuitry for generating a contrast voltage normally applied to a control pin. N...
08/13/2002
6288756Luminance correction circuit and video display monitor thereof
A luminance correction circuit to correct areas of unevenness in luminance or color of a video image and smoothes gaps between correction blocks. The luminance correction circuit comprises a memory for storing correction data for correcting unevenness in ...
09/11/2001
5257096Monitor television receiver
A monitor television receiver for displaying or supplying a color video output has a circuit for measuring the cathode currents of electron guns for three primary colors in a cathode-ray tube. A memory stores coefficients to form functional expressions re...
10/26/1993
5170247White balance adjusting system including a color temperature variation detector for a color image pickup apparatus
Operational amplifiers detect deviations from white in pictures picked up based on color-difference signals and generate white balance control signals, respectively. The data that correspond to the generated white balance control signals are held at count...
12/08/1992
5036387Color television receiver
A color television receiver having an automatic white control circuit which includes a detection circuit for detecting whether or not a given magnitude of a cathode current of a CRT flows, and generating a detection signal when the cathode current exceeds...
07/30/1991
4748497Television receiver automatic color temperature adjusting system with start up control
An automatic color temperature adjusting system for a television receiver which is capable of eliminating an unstable picture condition during the turn on transition period. The automatic color temperature adjusting system has a gain control circuit assoc...
05/31/1988
4723158Method and apparatus for performing scan line diagnostic testing in a video monitor during a last-line overscan of a normal display raster
A disclosed last-line overscan system and method allow for sampling of video display characteristics such as RGB cathode currents during each frame of displayed video for an underscanned video monitor without distortion of the visual display. Detection of...
02/02/1988
4703345Current control apparatus in which the beam current for all three colors is controlled according to average and peak values
A cathode ray tube beam current control apparatus for controlling the beam current in a plurality of cathode ray tubes each of which produce different colors wherein each of the cathode ray tubes have a current source circuit which is connected to a respe...
10/27/1987
4692793Circuit for blanking the video of a television set for a time after turn-on
A color picture tube for displaying a color picture which has a signal supply that includes a plurality of primary color signal channels for supplying a plurality of primary color signals to the color picture tube and current detecting means connected to ...
09/08/1987
4679065Automatic white control circuit for color television receiver
A color television receiver with automatic reference white control circuit has negative feedback loops for automatically adjusting the amplitude of each cathode driving voltage of R, G and B electron guns, so that the magnitude of each cathode current of ...
07/07/1987
4658286Method and apparatus for correcting distortions in reproducing systems
A method and apparatus for defining a plurality of subcategories of the information content of the input to a reproduction system and generating a set of signals corresponding to each such subcategory for the system output and an idealized output. The set...
04/14/1987
4618881Set of three integrated circuits for digital video signal processing in color-television receivers
In this IC set, the dark currents and the white levels of the three electron guns, the leakage currents of the cathodes, and a light-detector current are measured during four successive vertical blanking intervals. The cathode leakage currents and the dar...
10/21/1986
4523222Set of three integrated circuits for digital video signal processing in color-television receivers
In this IC set, the dark currents and the white levels of the three electron guns, the leakage currents of the cathodes, and a light-detector current are measured during four successive vertical blanking intervals. The cathode leakage currents and the dar...
06/11/1985
4516152Video signal processor with automatic kinescope white balance and beam current limiter control systems
A color television receiver includes a network for automatically limiting excessive kinescope beam currents developed in response to video signal image information, and a white balance control network for automatically controlling the white level drive (g...
05/07/1985
4514664Color television receiver
A color television receiver includes a color picture tube having three electron guns including cathodes and heaters therefor, respectively, and an automatic cutoff adjusting circuit for adding a reference voltage signal substantially at a black level to a...
04/30/1985
4418359Omnispectravision
A system for providing a visual color display of multi-spectral and/or multi-sensor data particularly that provided by a trichroic infrared scanning system, which includes the assignment of visible color signals to such data in a manner to maximize color ...
11/29/1983
4356508Brightness adjusting circuit for a cathode ray tube
An automatic brightness adjusting circuit for a cathode ray tube is disclosed which includes a video signal source from which a video signal is derived, a cathode ray tube having an electrode normally supplied with the video signal derived from the video ...
10/26/1982
4340904Automatic gray scale tracking system for cathode ray display devices
Apparatus is provided for achieving and maintaining gray scale tracking in a multibeam, cathode ray display device, despite fluctuations in the electrical characteristics of the display device and of video amplifiers driving the device. Tracking is accomp...
07/20/1982
4200882Color television CRT beam current correction circuit
Multi-gun color television display apparatus having for each gun an identical beam current reference level control system wherein the relative position of a reference level in the video signal and a setting voltage of the electron guns are periodically sh...
04/29/1980
4183047Chroma level stabilizer
A chroma level control circuit for a television receiver is responsive to the average of selected portions of color difference signals to reduce deviations from a viewer-selected chroma level. The preferred chromal level is selected by the viewer and the ...
01/08/1980
4160995Bias setting apparatus for use with television receivers
A color television receiver having a circuitry for automatically adjusting the cut-off points of the electron guns, i.e. for adjusting the bias of each electron gun to make the guns responsive to video signals in a constant manner, wherein the bias and th...
07/10/1979
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