Combined Contrast Control And Brightness Or Dc Level Control Patents (Class 348/673)
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Patent number: 11804155Abstract: A stacked display device and a control method thereof are provided. The stacked display device includes a display including a plurality of display panels, and a processor processing a layer image for providing an image to the display, wherein the display includes a backlight irradiating a light, a first panel including a lens for diffusing the light irradiated from the backlight, and for displaying an image of a single color, a second panel stacked on the first panel, and including a color filter for displaying a color image, and a third panel stacked on the second panel, and for displaying an image of a single color.Type: GrantFiled: December 28, 2021Date of Patent: October 31, 2023Assignee: Samsung Electronics Co., Ltd.Inventors: Kyungmin Lim, Jaesung Lee, Bora Jin, Seyong Kwon, Daeyeong Kim, Sunil Lee, Kangwon Jeon
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Patent number: 11783742Abstract: A display device includes: a first panel comprising pixels; and a second panel having a plate surface provided substantially parallel to a plate surface of the first panel. The plate surface of each of the first and second panels includes a curved surface. When the curved surface is a convex portion and two pixels controlled to transmit the light through the first panel are located in the convex portion, a distance between centers of two predetermined regions to which a blurring processing is applied corresponding to the two pixels is set smaller than a distance between the two the pixels. When the curved surface is a concave portion and the two pixels controlled to transmit the light through the first panel are located in the concave portion, the distance between the centers of the two predetermined regions is set larger than the distance between the two the pixels.Type: GrantFiled: May 18, 2022Date of Patent: October 10, 2023Assignee: JAPAN DISPLAY INC.Inventors: Tomoyuki Ishihara, Tsutomu Harada
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Patent number: 11683962Abstract: A display device includes: a base layer including an active area and a non-active area adjacent to the active area; a display circuit layer including a pixel circuit at the active area of the base layer, and a driving circuit at the non-active area, the driving circuit to supply a driving signal to the pixel circuit; and a display element layer on the display circuit layer and including light emitting elements to emit light. The non-active area includes a valley area formed by removing a portion of an organic insulation layer at the display circuit layer, the driving circuit includes a buffer transistor to output the driving signal, and the buffer transistor includes a control electrode and a semiconductor layer overlapping the valley area in a plan view.Type: GrantFiled: August 27, 2020Date of Patent: June 20, 2023Assignee: Samsung Display Co., Ltd.Inventors: Youngjin Cho, Jisu Na, Joong-Soo Moon, Yangwan Kim
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Patent number: 11328691Abstract: A method of displaying an image on a display panel includes displaying an image of a grayscale value A, imaging the image of the grayscale value A with a camera, displaying an image of a grayscale value B, imaging the image of the grayscale value B with the camera, determining a compensation parameter P of the grayscale value A for each pixel in the display panel using the imaged data of the grayscale value A, determining a representative value Q of probability distribution of the compensation parameters of the grayscale value A from the image of the grayscale value A, determining a representative value R of probability distribution of compensation parameters of the grayscale value B from the image of the grayscale value B and compensating an input image data for each pixel using the value P, the value Q and the value R.Type: GrantFiled: January 6, 2021Date of Patent: May 10, 2022Inventors: Hyunseuk Yoo, Hyungjin Kim, Hye-Sang Park, Heechul Hwang
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Patent number: 11152916Abstract: A system, method, and computer program product are provided for representation of high-frequency signal data. In use, input data is received including high-frequency signals, wherein the input data is of a first width. Next, the input data is processed to manage display of the input data, where specifically the input data is divided into one or more segments based on first criteria including the first width, and from each segment of the one or more segments, a maximum value is identified and a minimum value is identified. The maximum and minimum may be trend maximum and minimum values. The input data is transformed to a visualizable representation of the high-frequency signals, the visualizable representation of the high-frequency signals including a plot of the maximum value and the minimum value for each segment of the one or more segments. Additionally, the plot is displayed.Type: GrantFiled: May 11, 2020Date of Patent: October 19, 2021Assignee: Schweitzer Engineering Laboratories, Inc.Inventors: Matthew J. Halladay, Eric J. Hewitt
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Patent number: 11023994Abstract: Embodiments relate to image signal processors (ISP) that include one or more auto-focus circuits. Each of the auto-focus circuits may be connected to an image sensor and may be separate from a statistics circuit and other image processing pipelines of the ISP. An image sensor may include one or more focus pixels that are used to generate data for auto-focusing. The auto-focus circuit may extract the focus pixel values and generate a signal to control the lens position of the image sensor. Each image sensor may include a separate auto-focus circuit. When other image processing pipelines of the ISP are processing the image data from one image sensor, the auto-focus circuit for another image sensor may continue to generate focus signals that control the lens position of the other image sensor. The other image sensor may be in standby but may continue to remain in focus.Type: GrantFiled: April 5, 2019Date of Patent: June 1, 2021Assignee: Apple Inc.Inventors: Sheng Lin, David R. Pope, D. Amnon Silverstein
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Patent number: 10861384Abstract: A method of controlling image data includes the steps of: receiving an image frame; generating an image data distribution of the image frame; and controlling a parameter for displaying the image frame according to the image data distribution.Type: GrantFiled: June 26, 2019Date of Patent: December 8, 2020Assignee: NOVATEK Microelectronics Corp.Inventors: Chih-Yuan Yang, Feng-Ting Pai
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Patent number: 10685610Abstract: A driving method for display includes: acquiring an original gray scale data group of each of pixel units of a content to be displayed in a preset display area; determining average gray scales of each of hues in the preset display area according to the original gray scale data group; acquiring original light source intensities of each of the hues of the content to be displayed in the preset display area; dividing the original gray scale data group into a first gray scale data group and a second gray scale data group according to the original gray scale data group of each of the pixel units, the average gray scales of each of the hues, and the original light source intensities, and determining driving light source intensities of each of the hues in the preset display area.Type: GrantFiled: December 8, 2017Date of Patent: June 16, 2020Assignee: HKC CORPORATION LIMITEDInventor: Jianfeng Shan
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Patent number: 10664553Abstract: A system, method, and computer program product are provided for representation of high-frequency signal data. In use, input data is received including high-frequency signals, wherein the input data is of a first width. Next, the input data is processed to manage display of the input data, where specifically the input data is divided into one or more segments based on first criteria including the first width, and from each segment of the one or more segments, a maximum value is identified and a minimum value is identified. Still yet, the input data is transformed to a visualizable representation of the high-frequency signals, the visualizable representation of the high-frequency signals including a plot of the maximum value and the minimum value for each segment of the one or more segments. Additionally, the plot is displayed.Type: GrantFiled: October 6, 2017Date of Patent: May 26, 2020Assignee: Schweitzer Engineering Laboratories, Inc.Inventors: Eric J. Hewitt, Matthew J. Halladay
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Patent number: 10460639Abstract: A luminance compensation system of a display device and a luminance compensation method thereof are disclosed. The luminance compensation system includes a display panel including a plurality of pixels, a TFT and an OLED, a luminance meter configured to measure luminance at a plurality of positions and obtain a plurality of measure values for each of the plurality of positions in a state where modeling voltage patterns are applied to the plurality of positions, a first modeling unit configured to model the plurality of measure values to derive a first luminance characteristic approximate equation, and a second modeling unit configured to obtain a luminance error between the measure value and a luminance value in accordance with the first luminance characteristic approximate equation, after calculating an offset correction parameter, and apply the offset correction parameter to the first luminance characteristic approximate equation to derive a second luminance characteristic approximate equation.Type: GrantFiled: August 1, 2018Date of Patent: October 29, 2019Assignee: LG Display Co., Ltd.Inventors: Heon Gu, Hyojung Park, Junghoon Seo
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Patent number: 10257432Abstract: A method of image enhancement for a vehicle vision system includes providing a camera at the vehicle and providing a processor operable to process image data. Multiple frames of image data are captured with the camera, and contrast is enhanced in image data by tone mapping. As the vehicle moves, contrast thresholds are tracked within the captured frames of image data with respect to image flow caused by the vehicle's movement. Image data of a first frame of captured image data may be passed through two individual image transfer functions to generate a first transferred frame of image data. The first transferred frame may be blended with a second frame of image data. Presence of an object is detected in the field of view of the camera, and an output is generated responsive to detection of the object present in the field of view of the camera.Type: GrantFiled: September 25, 2017Date of Patent: April 9, 2019Assignee: MAGNA ELECTRONICS INC.Inventor: Marcel Kussel
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Patent number: 10121400Abstract: A video processing circuit includes a detecting unit that detects a set of a first pixel and a second pixel adjacent to the first pixel, which is a set of pixels in which a difference between application voltages to the first pixel and the second pixel which are indicated by an input video signal is greater than or equal to a threshold; an acquisition unit that acquires information which specifies a plurality of regions of voltage-brightness characteristics which are voltage-brightness characteristics of the pixel group and in which a voltage region is separated into the plurality of regions in accordance with a slope of the voltage-brightness characteristics; and a replacing unit that replaces the application voltage to the first pixel with a voltage which is in a region other than a first region and is close to a second region.Type: GrantFiled: April 14, 2017Date of Patent: November 6, 2018Assignee: SEIKO EPSON CORPORATIONInventors: Kazuhisa Mizusako, Hiroyuki Hosaka
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Patent number: 10062359Abstract: A control circuit applied to a display includes an adjustment parameter generating circuit, an adjustment circuit, a compensation circuit, an image detail compensating circuit and an output circuit. The adjustment parameter generating circuit determines an adjustment parameter according to a backlight intensity corresponding to a pixel in a frame. The adjustment circuit adjusts a pixel value of the pixel according to the adjustment parameter to generate an adjusted pixel value. The compensation circuit compensates the adjusted pixel value according to a compensation curve go generate a compensated pixel value. The compensation curve includes a non-linear segment. The image detail compensating circuit generates a detail compensation value according to an edge factor of the pixel. The output circuit adjusts the compensated pixel value according to the detail compensation value to generate an output pixel value of the pixel.Type: GrantFiled: April 13, 2017Date of Patent: August 28, 2018Assignee: MSTAR SEMICONDUCTOR, INC.Inventors: Shihheng Tsai, Chung-Yi Chen
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Patent number: 10013745Abstract: A method is described for inverse tone mapping the luminance (Yt(p)) of each pixel (p) of at least one image (It) of this sequence into an expanded luminance Ytexp(p)=Yt(p)Et(p). Ytenh(p), wherein Et(p) is an expansion exponent value extracted from an expansion exponent map built from low pass motion-compensated temporal filtering of said image (It) and wherein Ytenh(p) is a luminance-enhancement value extracted from a luminance-enhancement map built from high pass motion-compensated temporal filtering of said image (It).Type: GrantFiled: August 24, 2016Date of Patent: July 3, 2018Assignee: THOMSON LicensingInventors: Christel Chamaret, Laurent Cauvin, Ronan Boitard
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Patent number: 10013904Abstract: An image processing method and circuit, and a display device using the same, for minimizing image quality degradation of a high dynamic range (HDR) image without gamma transformation of a data drive integrated circuit (IC) and displaying the image in a standard dynamic range (SDR) display device are disclosed. The image processing method includes selecting a gamma curve with a first image having an HDR and cumulative minimum luminance error among a plurality of gamma curves corresponding to a display device having a SDR, and converting the first image into a second image having an SDR according to the selected gamma curve.Type: GrantFiled: April 5, 2016Date of Patent: July 3, 2018Assignee: LG Display Co., Ltd.Inventor: Yong-Min Park
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Patent number: 9948884Abstract: In a converting method for converting luminance of an input video in order to display the video on a display device, the luminance of the video is a first luminance value in a first luminance range where a maximum luminance value is defined as a first maximum luminance value that exceeds 100 nit. The method includes acquiring a first luminance signal indicating a first luminance value of the video, selecting a luminance converting process to be executed from among a plurality of luminance converting processes based on a reference luminance value corresponding to reference reflectance included in first meta data of the acquired first luminance signal, converting the first luminance value indicated by the acquired first luminance signal into a second luminance value in a second luminance range where a maximum luminance value is defined as a second maximum luminance value that is smaller than the first maximum luminance value and larger than 100 nit based on the selected luminance converting process.Type: GrantFiled: June 5, 2017Date of Patent: April 17, 2018Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Masayuki Kozuka, Tadamasa Toma, Kengo Terada, Takahiro Nishi
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Patent number: 9916862Abstract: A computer implemented method and apparatus for editing video scenes based on learned user preferences. The method comprises identifying a plurality of scenes in a video; for each scene of the plurality of scenes: applying an effect to a representative frame of a scene, wherein the effect is based on learned user preferences; receiving an input that adjusts at least one effect on the representative frame; updating user preferences based on received input; and applying the at least one effect to all frames of the scene; interpolating the adjusted at least one effect at a boundary of two consecutive scenes; and applying the interpolated at least one effect to transitional frames between the two consecutive scenes.Type: GrantFiled: November 30, 2016Date of Patent: March 13, 2018Assignee: ADOBE SYSTEMS INCORPORATEDInventor: Puneet Singhal
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Patent number: 9736443Abstract: Content adaptive power management technologies of projector systems are described. One method analyzes image data to be displayed by a projector system. A projector brightness of a light source of the projector system is adjusted based on the analyzed image data. The pixel values of the image data input into an imager of the projector system are adjusted based on the analyzed image data.Type: GrantFiled: March 4, 2013Date of Patent: August 15, 2017Assignee: Intel CorporationInventor: Yanli Zhang
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Patent number: 9681062Abstract: A vision system for a vehicle includes an imaging sensor disposed at the vehicle and having an exterior field of view, and an image processor. The imaging sensor captures image data and the image processor is operable to process successive frames of captured image data. Responsive to a determination of a low visibility driving condition, the image processor increases the contrast of the captured images to enhance discrimination of objects in the field of view of the imaging sensor. The image processor may execute a first brightness transfer function on frames of captured image data to enhance the contrast of captured image data, and may execute a second brightness transfer function over successive frames of earlier captured image data and may execute a tone mapping of the earlier captured image data and the currently captured image data to generate a contrast enhanced output image.Type: GrantFiled: September 25, 2012Date of Patent: June 13, 2017Assignee: MAGNA ELECTRONICS INC.Inventor: Marcel Kussel
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Patent number: 9582872Abstract: An optical defect detection method and a system thereof are disclosed. The detection method includes a process of detecting an image of an optical film by an optical detector. The image is converted into a clean detection image by conducting the following processes: uniforming the brightness, enhancing the contrast, filtering off the noise, smoothing the image and binarizing the image. A relative relation between a pixel and the surrounding pixels of the clean detection image is converted into a spatial relation sequence model. The spatial relation sequence model is compared to the different types of the defect sequence model, so that the defect type of the optical film is identified as a point defect, a lack of material defect or a ripple defect.Type: GrantFiled: December 11, 2015Date of Patent: February 28, 2017Assignee: YUAN ZE UNIVERSITYInventors: Chia-Yu Hsu, Shih-En Jhong, Kuo-Hua Lai, Chien-Lung Chan
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Patent number: 9557829Abstract: A computer implemented method and apparatus for editing video scenes based on learned user preferences. The method comprises identifying a plurality of scenes in a video; for each scene of the plurality of scenes: applying an effect to a representative frame of a scene, wherein the effect is based on learned user preferences; receiving an input that adjusts at least one effect on the representative frame; updating user preferences based on received input; and applying the at least one effect to all frames of the scene; interpolating the adjusted at least one effect at a boundary of two consecutive scenes; and applying the interpolated at least one effect to transitional frames between the two consecutive scenes.Type: GrantFiled: May 1, 2014Date of Patent: January 31, 2017Assignee: ADOBE SYSTEMS INCORPORATEDInventor: Puneet Singhal
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Patent number: 9498149Abstract: An apparatus for detecting magnetic particles in a field of view, which apparatus includes selection coils, drive coils, receiving coils configured to acquire detection signals, and a processor configured to control the coils and reconstruct an image of the field of view from the detection signals. The processor is further configured to: identify in the detection signals one or more background time periods at which no magnetic particles were present in the field of view, wherein signal time periods at which magnetic particles were present in the field of view are interspersed with at least one of said one or more background time periods; use the detection signals obtained at the background time periods to correct detection signals obtained at the signal time periods; and reconstruct the image from the corrected detection signals obtained at the signal time periods.Type: GrantFiled: October 2, 2013Date of Patent: November 22, 2016Assignee: KONINKLIJKE PHILIPS N.V.Inventor: Jürgen Erwin Rahmer
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Patent number: 9013525Abstract: A brightness control system enhances a displayed image. The system selectively alters the brightness of a portion of the image to improve the clarity, noticeability, and intelligibility of information provided on the display. When used with a vehicle navigation system, the brightness adjustment system may emphasize vehicle or destination location display, driving directions, route planning information, or other information provided to the driver.Type: GrantFiled: February 10, 2006Date of Patent: April 21, 2015Assignee: Harman Becker Automotive Systems GmbHInventors: Horst Saier, Thomas Sagcob, Thomas Menzl
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Patent number: 8947465Abstract: Embodiments of the present invention comprise systems, methods and devices for display-mode-dependent adjustment of image code values.Type: GrantFiled: December 2, 2005Date of Patent: February 3, 2015Assignee: Sharp Laboratories of America, Inc.Inventor: Louis Joseph Kerofsky
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Patent number: 8913089Abstract: Embodiments of the present invention comprise systems, methods and devices for increasing the perceived brightness of an image. In some embodiments this increase compensates for a decrease in display light source illumination.Type: GrantFiled: June 15, 2005Date of Patent: December 16, 2014Assignee: Sharp Laboratories of America, Inc.Inventors: Louis Joseph Kerofsky, Scott James Daly
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Patent number: 8879800Abstract: A method and system include receiving an image to process for an image recognition system, determining a quality of the received image, and creating a point distribution model for an active shape model, wherein the point distribution model has a number of points defining an outline of the image, the number of points being determined as a function of the quality of the image. A further method includes selecting a target local appearance model for fitting a point as a function of the determined quality of the received image to determine the location of the point. Yet a further method includes matching the probe image to a plurality of target images using a quality driven cascade classifier.Type: GrantFiled: June 15, 2011Date of Patent: November 4, 2014Assignee: Honeywell International Inc.Inventors: Jana Trojanova, Saad J. Bedros
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Patent number: 8836715Abstract: A method of processing image data for display by a display panel of a display device. The method comprises receiving main image pixel data representing a main image and side image pixel data representing a side image, and performing a mapping of the pixel data to signals used to drive the display panel. The mapping is arranged to produce an average on-axis luminance which is dependent mainly on the main image pixel data and an average off-axis luminance which is dependent at least to some extent on the side image pixel data. A compression of the main image pixel data is performed in advance of or at least partly incorporated into the mapping, the compression being performed at least partly in dependence upon the main image pixel data and at least partly in dependence upon how the off-axis luminance varies with pixel data input to the mapping.Type: GrantFiled: September 16, 2010Date of Patent: September 16, 2014Assignee: Sharp Kabushiki KaishaInventors: Benjamin John Broughton, Andrew Kay, Marc Paul Servais, Paul Antony Gass, Masahiro Esashi, Kenji Maeda, Tatsuo Watanabe, Yuuichi Sato, Yoshimitsu Inamori, Takashi Yasumoto
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Patent number: 8836865Abstract: A method and system are provided in which a video channel is selected from multiple video channels in a video processor. A picture quality profile associated with a content of the selected video channel is received by the video processor to modify a value of one or more picture quality control parameters utilized by the video processor that are mapped to a user level setting. Metadata associated with the content of the selected video channel may be determined and communicated to a server. The server may utilize the metadata to determine a picture quality profile for the video processor. In some instances, environmental conditions associated with a television or display device may be measured and communicated to the server to determine the picture quality profile. For example, the measured environmental conditions may comprise one or more of an ambient light, a sound, a motion, and a temperature measurement.Type: GrantFiled: January 25, 2011Date of Patent: September 16, 2014Assignee: Broadcom CorporationInventors: Gaurav Arora, Adil Jagmag
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Patent number: 8781248Abstract: The appearance of image details can be preserved and/or enhanced by applying contrast adaptive gain to the high spatial frequency component of the luminance information. The image details in bright and/or dark regions can be further boosted by applying a local mean adaptive gain. The contrast transfer mapping curve for luminance contrast enhancement can be re-scaled to account for the applied gain. The re-scaling may be performed from frame to frame of displayed video. The re-scaling may be temporally controlled for subsequent frames to make the re-scaling change gradually to prevent flickering.Type: GrantFiled: January 28, 2010Date of Patent: July 15, 2014Assignee: STMicroelectronics Asia Pacific Pte. Ltd.Inventors: Haiyun Wang, Lucas Hui
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Patent number: 8654068Abstract: Disclosed embodiments relate to techniques for enhancing luminance resolution in a backlight unit. A backlight unit may have light-emitting diode (LED) light sources arranged in strings. In one embodiment, a backlight controller provides enhanced luminance resolution by drive each LED string at either first or second consecutive luminance values corresponding to first and second duty cycles of a pulse width modulation (PWM) signal. The outputs of the LED strings are optically mixed to achieve intermediate luminance values between the first and second luminance values.Type: GrantFiled: July 15, 2011Date of Patent: February 18, 2014Assignee: Apple Inc.Inventor: Andrew P. Aitken
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Patent number: 8537085Abstract: Specific image quality adjustment of an image is performed according to a setting made by a user, and contrast compensation is performed such that a brightness is kept unchanged at the center of a specific color region larger than a predetermined size, regardless of the setting of the image quality adjustment. The image quality adjustment is performed by selecting one of a plurality of filters with different frequency characteristics according to the setting of the image quality adjustment, and then performing filter processing on the image by using the selected filter. The contrast compensation is performed upon the image that has undergone the filter processing, by using a contrast compensation value related to the selected filter.Type: GrantFiled: June 22, 2009Date of Patent: September 17, 2013Assignee: Seiko Epson CorporationInventor: Kesatoshi Takeuchi
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Patent number: 8508666Abstract: A moving image processing apparatus includes a brightness information acquisition unit configured to acquire, from an input video signal, brightness information indicating brightness of the video signal, an illumination information acquisition unit configured to acquire illumination information about an environment of the moving image processing apparatus, an adaptation coefficient calculation unit configured to calculate an adaptation coefficient for an observer based on brightness when the brightness indicated by the brightness information is less than a first threshold and the brightness indicated by the illumination information is less than a second threshold, a correction coefficient calculation unit configured to calculate a correction coefficient to be used for image correction of the video signal based on the adaptation coefficient calculated by the adaptation coefficient calculation unit, and an image correction unit configured to perform image correction on the video signal using the correction coefType: GrantFiled: December 6, 2010Date of Patent: August 13, 2013Assignee: Canon Kabushiki KaishaInventor: Shugo Higuchi
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Patent number: 8456417Abstract: A user interface system determines image display presentation characteristics using a displayed image parameter selection control providing image parameter selection data, responsive to the received cursor command data. The displayed image parameter selection control includes a shape having an origin and one or more different sectors associated with one or more corresponding different sets of parameters determining image color or grayscale characteristics and a linear element lying along a line from the origin to a perimeter of the shape and being rotatable about the origin, (a) within a sector to select a value within a range of values determining a first image display characteristic and (b) between sectors to select one of the different sets of parameters determining image color or grayscale characteristics. A display processor initiates display of an image having display presentation characteristics determined by the image parameter selection data.Type: GrantFiled: May 24, 2010Date of Patent: June 4, 2013Assignee: Siemens Medical Solutions USA, Inc.Inventor: Irene Fang
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Patent number: 8421818Abstract: A signal processing device (200) included in a display which has a color reproduction range larger than that of the input device.Type: GrantFiled: July 30, 2010Date of Patent: April 16, 2013Assignee: Sanyo Electric Co., LtdInventors: Takaaki Abe, Masutaka Inoue
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Publication number: 20130070158Abstract: A touch input device is provided. The touch input device includes a touch panel and a touch control. The touch panel includes a number of touch sensor groups, each touch sensor group includes a line of touch sensors, each touch sensor produces a touch signal in response to a user's touch, the touch sensor groups are arranged on the touch panel one by one along a predetermined path, the quantity of touch sensors of each touch sensor group is increased or decreased gradually, and the arrangement direction of the touch sensors of each touch sensor group is perpendicular to the direction of the predetermined path. The touch control is connected to the touch panel and is used to receive the touch signals produced by the touch sensor, and determine a touch path according to the changes of the quantity of the received touch signals.Type: ApplicationFiled: May 21, 2012Publication date: March 21, 2013Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTDInventors: KUAN-HONG HSIEH, HAN-CHE WANG, LI-ZHANG HUANG, WEN-HSIANG LU, JI-BAO FU
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Publication number: 20130070157Abstract: An electronic device includes a power management unit, a touch panel including a first touch area and a second touch area, a first indicator, a second indicator, and a processing unit. The first touch area and the second touch area are respectively located on two sides of the touch panel, and is used to produce touch signals in response to a user's touch. The position of the first indicator and a second indicator are respectively corresponding to the first touch area and the second touch area. The processing unit controls the power management unit to provide power to the first indicator only when determining the first touch area is touched by the user according to the touch signals received by it, and control the power management unit to provide power to the second indicator only when determining the second touch area is touched.Type: ApplicationFiled: May 21, 2012Publication date: March 21, 2013Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.Inventors: KUAN-HONG HSIEH, HAN-CHE WANG, LI-ZHANG HUANG, WEN-HSIANG LU, JI-BAO FU
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Patent number: 8390640Abstract: A television device structured to automatically adjust the color temperature on the display screen in accordance with the viewing environment includes an external light detection unit or an optical sensor for detecting the illuminance and the tint of the ambient light, and an image quality control unit or a microcomputer for adjusting quality of the video image to be displayed on the display panel. The image quality control unit adjusts the color temperature of the video image to be displayed in accordance with the illuminance value and the tint value detected by the external light detection unit. The optical sensor includes an illuminance sensor for mainly detecting the visible light, and an infrared sensor for mainly detecting the infrared light. The illuminance value and the tint value are obtained based on the output values of those two sensors.Type: GrantFiled: November 10, 2009Date of Patent: March 5, 2013Assignee: Hitachi Consumer Electronics Co., Ltd.Inventors: Hiroshi Aoki, Akira Kitazume, Daisuke Honda, Naoya Oka, Yuki Nagano, Hiroyuki Kurabayashi, Akihiro Shiraishi, Toshiaki Ohyama
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Patent number: 8374430Abstract: A feature-based contrast enhancement apparatus comprises a histogram calculator, a feature value calculator, a first combining circuit, a histogram equalizer and a remapper. By keeping the hardware cost as low as a picture-based contrast enhancement apparatus, the invention has an advantage of suppressing the background noise and enhancing the image details.Type: GrantFiled: March 18, 2010Date of Patent: February 12, 2013Assignee: Silicon Integrated Systems Corp.Inventor: Jeng-Yun Hsu
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Patent number: 8368814Abstract: 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 the image signals that are output. The visual processing device is provided with a gain-type visual processing portion that outputs a first gain signal having predetermined gain characteristics with respect to the input image signal, and a correction portion that corrects the input image signal based on the first gain signal.Type: GrantFiled: October 7, 2010Date of Patent: February 5, 2013Assignee: Panasonic CorporationInventors: Haruo Yamashita, Takeshi Ito, Yusuke Monobe, Tatsumi Watanabe, Yasuhiro Kuwahara
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Patent number: 8339461Abstract: A signal converting apparatus includes the following elements. A converting section converts an input signal into output signals on the basis of the values of reference parameters, serving as references of a plurality of parameters for signal conversion, and the values of newly proposed parameters. An evaluation input receiving section receives an evaluation input indicating the selection of either the output signal based on the values of the reference parameters or the output signal based on the values of the newly proposed parameters. A parameter updating section linearly changes the values of the newly proposed parameters when the evaluation input indicates the selection of the output signal based on the values of the newly proposed parameters, and nonlinearly changes the values of the reference and newly proposed parameters when the evaluation input indicates the selection of the output signal based on the values of the reference parameters.Type: GrantFiled: February 19, 2008Date of Patent: December 25, 2012Assignee: Sony CorporationInventor: Michel Xavier
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Patent number: 8334876Abstract: A signal processing device including: a color coordinate adjuster performing color coordinate adjustment processing for adjusting color coordinates of an image input signal according to a color reproduction range of a display device; a brightness adjuster performing brightness adjustment processing for adjusting a brightness component of the image input signal; and a coefficient controller controlling a color coordinate adjustment coefficient and a brightness adjustment coefficient. The coefficient controller controls the brightness adjustment coefficient so as to decrease the brightness component of the image input signal, when saturation of a pixel having a first hue is high, controls the brightness adjustment coefficient so as to increase the brightness component of the image input signal, when saturation of a pixel having a second hue is high, and decreases the brightness adjustment coefficient when increasing the color coordinate adjustment coefficient.Type: GrantFiled: May 21, 2009Date of Patent: December 18, 2012Assignee: SANYO Electric Co., Ltd.Inventors: Takaaki Abe, Masutaka Inoue
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Patent number: 8294828Abstract: A television apparatus 100 is so designed as to store into ROM 14 the table that contains image control parameters and tone control parameters used for approximating the image and tone characteristics from different manufacturers wherein a microcomputer 13 reads and uses the image control parameters and the tone control parameters from the ROM 14 to thereby issue a signal processing instruction to a video processing circuit 11 and an audio processing circuit 12 in order to approximate the image and tone of each manufacturer. This allows collective control of image and tone and also allows a user to select collectively controlled image and tone easily.Type: GrantFiled: September 14, 2007Date of Patent: October 23, 2012Assignee: Funai Electric Co., Ltd.Inventor: Shoichiro Nishimura
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Patent number: 8279353Abstract: An image processing device is provided with a picture quality mode which is used to collectively set a plurality of the picture qualities by one operation, a user can select the picture quality mode depending on his preference or content of programs to be viewed. A recording portion stores an association table. The association table is a table in which the picture quality mode and sound quality setting values to direct sound quality setting for a sound quality setting portion, are correlated with each other and stored. When a control portion receives a picture quality setting command by a designation of the picture quality mode, the picture quality setting portion performs setting of the respective picture qualities depending on the picture quality mode. Further, the setting direction portion reads out the association table and obtains the sound quality setting values which are correlated with the designated picture quality mode.Type: GrantFiled: August 20, 2008Date of Patent: October 2, 2012Assignee: Funai Electric Co., Ltd.Inventor: Senichi Furutani
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Publication number: 20120242904Abstract: Provided is a display apparatus that performs an adjustment of brightness of a backlight on a per block basis based on a video signal and displays, by using the backlight, an image based on the video signal. The display apparatus includes an adjustment portion that performs an adjustment of a color gain or sharpness with respect to the video signal, and a color gain level or a sharpness level to be achieved by the adjustment for each block is determined in accordance with a degree of the adjustment of brightness performed in the each block.Type: ApplicationFiled: March 1, 2012Publication date: September 27, 2012Applicant: SANYO ELECTRIC CO., LTD.Inventors: Kazuyuki SHIRAI, Naohiro MIZUMATA
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Patent number: 8274526Abstract: A method, apparatus and system for visual gamma correction of a display system includes retrieving input gamma information from input content, determining at least one pattern representing luminance of the received content based upon at least the retrieved gamma information, displaying the at least one determined pattern representing the luminance of the received image content and at least one corresponding reference image on the display system, and adjusting the brightness and contrast of the least one reference image on the display system to approach the luminance of a corresponding determined pattern to determine a corrected gamma for the display system.Type: GrantFiled: December 14, 2006Date of Patent: September 25, 2012Assignee: Thomson LicensingInventor: Bongsun Lee
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Patent number: 8237867Abstract: A dynamic gain adjustment method and apparatus based on brightness are provided. The dynamic gain adjustment method and apparatus amplify or attenuate high frequency components of an input video signal by dynamically varying a gain that is applied to a peaking algorithm block for picture quality improvement in a video processing device, such as a digital television, based on an average picture level (APL) of the input video signal. The gain can be dynamically adjusted when the APL of the input video signal is high or low, and thus saturation of the video signal during the operation of the peaking block can be prevented.Type: GrantFiled: April 3, 2007Date of Patent: August 7, 2012Assignee: Samsung Electronics Co., Ltd.Inventor: Tae-hwan Cha
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Patent number: 8223163Abstract: A display device includes: a brightness histogram information producing unit that produces brightness histogram information on the basis of an image signal; an APL calculating unit that calculates an APL on the basis of the brightness histogram information; a highest class determining unit that determines a highest class, which is a class with a highest brightness, on the basis of the brightness histogram information; an APL difference value calculating unit that calculates an APL difference value which is a difference value between an APL of a previous frame and an APL of a current frame; and a white peak value determining unit that determines a white peak value of a current frame by adding a predetermined value to a white peak value of a previous frame when a highest class difference absolute value, which is an absolute value of a difference value between a highest class of the previous frame and a highest class of the current frame, is less than a threshold value and that determines a white peak value of tType: GrantFiled: May 13, 2009Date of Patent: July 17, 2012Assignee: Seiko Epson CorporationInventor: Tatsuhiko Nobori
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Patent number: 8218087Abstract: A method for adjusting image is applied to an image output device. According to the method, the image output device firstly obtains a current image frame including plural pixels, and analyzes an intensity of an input image signal value of each pixel. The image output device defines each pixel having the input image signal value being smaller than a critical value as a dark pixel, and counts a number of the dark pixels to obtain a ratio of the dark pixels among all the pixels to serve as a dark pixel ratio. The image output device determines an image adjusting curve equation according to the dark pixel ratio, substitutes the input image signal values to the image adjusting curve equation, and obtains output image signal values of the pixels. Finally, the image output device combines all the output image signal values to obtain a final output image frame.Type: GrantFiled: March 22, 2010Date of Patent: July 10, 2012Assignee: MSI Computer (Shenzhen) Co., Ltd.Inventors: Kai-Wen Lo, Ren-Jie Yang
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Patent number: 8174624Abstract: An apparatus outputs an image signal for each frame, divides a frame into sub-frames, acquires a first signal of high frequency components and a second signal of low frequency components of a sub-frame, and generates a third signal by multiplying the second signal by K. If a fourth signal obtained by adding the third signal to the first signal falls within a predetermined range, the apparatus outputs the third signal, whereas if the fourth signal includes a portion exceeding the range, the apparatus outputs a signal obtained by correcting the third signal. The apparatus also generates a composition signal of the output signal and the first signal and a fifth signal by multiplying the third signal by a correction amount y of the third signal. As a sub-frame of interest, either the composition signal or the fifth signal is output.Type: GrantFiled: March 16, 2010Date of Patent: May 8, 2012Assignee: Canon Kabushiki KaishaInventor: Yukihiko Sakashita
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Patent number: 8134532Abstract: An image display apparatus includes an image displaying unit that includes a light source unit and a light modulation device, a histogram generating unit, a light source luminance calculator, a function storing unit, a first evaluation value calculator, a second evaluation value calculator, a third evaluation value calculator, a function acquiring unit and a control unit. The function acquiring unit acquires a plurality of the third evaluation values by repeating processing by the first to third evaluation value calculators with modification to a level conversion function and acquires a level conversion function that has a smallest third evaluation. The control unit supplies a signal of a converted video resulting from conversion of the image with the acquired level conversion function to the light modulation device.Type: GrantFiled: October 30, 2008Date of Patent: March 13, 2012Assignee: Kabushiki Kaisha ToshibaInventors: Masahiro Baba, Goh Itoh