Patents by Inventor Han Feng Chen
Han Feng Chen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240074631Abstract: A cleaning system and a cleaning method are provided. The cleaning system includes a main body, an air suctioning device, a light source, an optical sensor, a memory and a processing unit. The air suctioning device includes an air flow passage and a fan-motor assembly that is disposed in the air flow passage and generates a suction force to suction outside air through the air flow passage. The light source emit light to the air flow passage. The optical sensor captures a plurality of successive image frames from the air flow passage. The processing unit is configured to: obtain first and second image frames from the successive image frames; compare the first image frame with the second image frame to identify dust particles; obtain a particle feature of the dust particles; and determine a current cleanness condition according to the particle feature.Type: ApplicationFiled: September 1, 2022Publication date: March 7, 2024Inventors: SHIH-FENG CHEN, HAN-LIN CHIANG, NING SHYU
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Publication number: 20150262534Abstract: A display apparatus and a brightness adjusting method thereof are provided. The display apparatus includes a panel unit which displays an image signal, a backlight unit which provides a light to the panel unit to visualize the image signal, a luminance value regulator which calculates representative values to be applied for adjusting a brightness of a plurality of partial areas of the backlight unit corresponding to the input image signal, a contrast enhancer which compensates for a brightness of the image signal compromised by the representative value through a contrast enhancement, and a pixel value compensator which compensates for pixel values of the image signal compensated using the contrast enhancement. Accordingly, the contrast ratio of the entire image can be enhanced by compensating for the brightness loss of the image signal caused from the brightness adjustment of the luminous element, and the image quality can be more finely improved.Type: ApplicationFiled: May 29, 2015Publication date: September 17, 2015Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Tae-hyeun HA, Han Feng CHEN, Jun-ho SUNG, Yung-jun PARK
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Patent number: 9064459Abstract: A display apparatus and a brightness adjusting method thereof are provided. The display apparatus includes a panel unit which displays an image signal, a backlight unit which provides a light to the panel unit to visualize the image signal, a luminance value regulator which calculates representative values to be applied for adjusting a brightness of a plurality of partial areas of the backlight unit corresponding to the input image signal, a contrast enhancer which compensates for a brightness of the image signal compromised by the representative value through a contrast enhancement, and a pixel value compensator which compensates for pixel values of the image signal compensated using the contrast enhancement. Accordingly, the contrast ratio of the entire image can be enhanced by compensating for the brightness loss of the image signal caused from the brightness adjustment of the luminous element, and the image quality can be more finely improved.Type: GrantFiled: March 25, 2008Date of Patent: June 23, 2015Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Tae-hyeun Ha, Han Feng Chen, Jun-ho Sung, Yung-jun Park
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Patent number: 8675741Abstract: A method of improving image quality and the display apparatus thereof are provided. The method includes generating a plurality of sub-frame images using a frame image depending on whether the frame image is a moving image or a still image and displaying the plurality of sub-frame images sequentially for a frame time interval of the frame image. By generating the plurality of sub-frame image which have different pixel values each other and displaying the plurality of sub-frame image sequentially, the sticking phenomenon may be prevented and a life time of the display apparatus may be extended.Type: GrantFiled: September 23, 2008Date of Patent: March 18, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Tae-hyeun Ha, Hyung-rae Kim, Han feng Chen, Jun-ho Sung
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Patent number: 8619102Abstract: A display apparatus and a method for adjusting brightness thereof are provided. The display apparatus includes a panel unit which displays a video signal, a light emitting unit which provides the panel unit with a ray of light and causes the video signal to be visualized, a light emission control unit which controls the light emitting unit so that the ray of light is provided to each of local areas of the panel unit, and a panel control unit which compensates pixels of the video signal in each of local areas, to remove an artifact which is generated due to the ray of light provided to local areas of the panel unit. Because brightness of a screen is adjusted in each of local areas, contrast ratio is enhanced, and improved image quality is provided.Type: GrantFiled: January 18, 2008Date of Patent: December 31, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Han Feng Chen, Yung-jun Park, Jun-ho Sung, Hoon Choi, Jun-ho Jung
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Publication number: 20110115696Abstract: Disclosed are a backlight unit and a display apparatus. The display apparatus including: an image receiver receiving an image signal; an image processor processing an image signal received by the image receiver; a display panel displaying an image signal processed by the image processor into an image; a plurality of light guide plates disposed corresponding to divided display regions of the display panel respectively and providing light to the display regions respectively; and a light source module selectively disposed between adjacent light guide plates and radiating light to a lateral side of the light guide plates, if the light source module is not disposed between a first light guide plate and a second light guide plate which are adjacent each other among the plurality of light guide plates, light being radiated to the first light guide plate and the second light guide plate in opposite directions.Type: ApplicationFiled: November 3, 2010Publication date: May 19, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Agarwal PANKAJ, Han-feng CHEN, Jun-ho SUNG, Tae-hyeun HA, Sang-hoon LEE, Sung-jin CHOI
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Publication number: 20110090308Abstract: A display apparatus and an image processing method thereof are disclosed. A display apparatus includes a display unit; a signal processor which classifies an image comprising a left eye image and a right image into one of a first image and a second image according to a predetermined brightness level, generates at least two sub frames including a white frame if the image is classified into a first image, generates at least two sub frames comprising a black frame if the image is classified into a second image, and outputs the generated sub frames to the display unit. A signal transmitter outputs, to external shutter glasses, a control signal corresponding to the left eye image and the right eye image.Type: ApplicationFiled: April 23, 2010Publication date: April 21, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Han feng CHEN, Ki-bum SEONG, Jun-ho SUNG, Tae-hyeun HA, Jae-sung PARK
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Patent number: 7852327Abstract: The present invention relates to a display apparatus comprising a display panel; a controller to analyze input video data into frequency components, and create first and second video data different in the frequency component from each other on the basis of analyzed results; and a panel driver to drive the created first and second video data to be displayed in sequence as images on the display panel. Thus, the present invention provides a display apparatus and a control method thereof, in which first video data and second video data are created by analyzing a frequency component of input video data and output in sequence, thereby decreasing a motion blur through a simple operation without hardware change.Type: GrantFiled: November 8, 2005Date of Patent: December 14, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Han Feng Chen, Oh-jae Kwon, Sung-hee Lee
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Publication number: 20090303391Abstract: A display apparatus includes: a display unit which displays an image; and a signal controller which determines a motion state of a current frame on the basis of a previous frame and the current frame input in sequence, generates a first sub-frame of which brightness is varied according to the motion state of the current frame, generates at least one second sub-frame to compensate the brightness of the first sub-frame on the basis of the first sub-frame and the current frame, and controls the first sub-frame and the second sub-frame to be displayed on the display unit in sequence.Type: ApplicationFiled: January 14, 2009Publication date: December 10, 2009Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jun-ho JUNG, Han-feng CHEN, Jun-ho SUNG, Tae-hyeun HA
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Publication number: 20090278775Abstract: A display apparatus includes: a display unit which displays an image; and a signal controller which generates a first sub-frame having a mean brightness by calculating the mean brightness of an original frame input from an outside, generates at least one second sub-frame for compensating the first sub-frame on the basis of the first sub-frame and the original frame, and outputs the first sub-frame and the second sub-frame to be displayed on the display unit in sequence.Type: ApplicationFiled: February 4, 2009Publication date: November 12, 2009Applicant: Samsung Elctronics Co., Ltd.Inventors: Tae-Hyeun HA, Han-Feng Chen, Jun-ho Sung, Hyung-rae Kim, Jae-sung Park
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Publication number: 20090268977Abstract: A method of improving image quality and the display apparatus thereof are provided. The method includes generating a plurality of sub-frame images using a frame image depending on whether the frame image is a moving image or a still image and displaying the plurality of sub-frame images sequentially for a frame time interval of the frame image. By generating the plurality of sub-frame image which have different pixel values each other and displaying the plurality of sub-frame image sequentially, the sticking phenomenon may be prevented and a life time of the display apparatus may be extended.Type: ApplicationFiled: September 23, 2008Publication date: October 29, 2009Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Tae-hyeun HA, Hyung-rae KIM, Han feng CHEN, Jun-ho SUNG
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Publication number: 20090002400Abstract: A display apparatus and a brightness adjusting method thereof are provided. The display apparatus includes a panel unit which displays an image signal, a backlight unit which provides a light to the panel unit to visualize the image signal, a luminance value regulator which calculates representative values to be applied for adjusting a brightness of a plurality of partial areas of the backlight unit corresponding to the input image signal, a contrast enhancer which compensates for a brightness of the image signal compromised by the representative value through a contrast enhancement, and a pixel value compensator which compensates for pixel values of the image signal compensated using the contrast enhancement. Accordingly, the contrast ratio of the entire image can be enhanced by compensating for the brightness loss of the image signal caused from the brightness adjustment of the luminous element, and the image quality can be more finely improved.Type: ApplicationFiled: March 25, 2008Publication date: January 1, 2009Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Tae-hyeun Ha, Han Feng Chen, Jun-ho Sung, Yung-jun Park
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Publication number: 20080252666Abstract: A display apparatus and a method for adjusting brightness thereof are provided. The display apparatus includes a panel unit which displays a video signal, a light emitting unit which provides the panel unit with a ray of light and causes the video signal to be visualized, a light emission control unit which controls the light emitting unit so that the ray of light is provided to each of local areas of the panel unit, and a panel control unit which compensates pixels of the video signal in each of local areas, to remove an artifact which is generated due to the ray of light provided to local areas of the panel unit. Because brightness of a screen is adjusted in each of local areas, contrast ratio is enhanced, and improved image quality is provided.Type: ApplicationFiled: January 18, 2008Publication date: October 16, 2008Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Han Feng CHEN, Yung-jun PARK, Jun-ho SUNG, Hoon CHOI, Jun-ho JUNG
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Publication number: 20070140346Abstract: A frame interpolator comprises a motion estimating unit dividing a current frame into a plurality of reference blocks, each reference block having a predetermined size, comparing the reference block with a predetermined search area set in a previous frame, and estimating an initial motion vector. A reliability evaluating unit evaluates reliability of the initial motion vector and generates reliability evaluation data regarding the evaluation result. A frame interpolating unit interpolates an intermediate frame to be inserted between the current frame and the previous frame on the basis of the initial motion vector and the reliability evaluation data A frame interpolator, a frame interpolation method, and a motion reliability evaluator, which are capable of improving interpolation quality of frames and reducing a block artifact, are provided.Type: ApplicationFiled: November 17, 2006Publication date: June 21, 2007Inventors: Han-Feng Chen, Sung-Soo Kim, Jun-Ho Sung
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Patent number: D1018527Type: GrantFiled: May 12, 2020Date of Patent: March 19, 2024Assignee: COMPAL ELECTRONICS, INC.Inventors: Han-Tsai Liu, Jyh-Chyang Tzou, Cheng-Shiue Jan, Yao-Hsien Yang, Pai-Feng Chen, I-Hao Chen