Patents by Inventor Sarah Sunyoung Hwang
Sarah Sunyoung Hwang 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).
-
Patent number: 9183787Abstract: A module processes image data to provide gray level signals to be used for displaying an image. The module may include a scale value control member for determining a first scale value. The module may further include a brightness control member for determining a controlled brightness value using a requested brightness value, a brightness control parameter, and a baseline brightness value. The module may further include a modification member for determining a modified scale value using the first scale value and the controlled brightness value. The module may further include a scaler for generating the gray level signals using the image data and at least one of the modified scale value and a damped scale value, the damped scale value being determined using the modified scale value. The module may further include hardware circuitry for implementing at least one of the aforementioned components.Type: GrantFiled: May 31, 2012Date of Patent: November 10, 2015Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Anthony Botzas, MoonHwan Im, Sarah Sunyoung Hwang, Candice Hellen Brown Elliott
-
Patent number: 8982038Abstract: A display system and method for displaying an image on the display system are provided. The display system includes a display panel and a backlight for illuminating the display panel, the backlight including one or more light emitting zones that each emit light in response to a backlight drive value. The display system further includes a backlight selection module for selecting the backlight drive value for each light emitting zone from image data, an effective backlight module that generates effective backlight signals using light spread information for the backlight and the backlight drive values, and a module for modulating the image data according to the effective backlight signal and providing the modulated image data to the display panel. The light spread information includes information representing the contribution of light from each light emitting zone over the display panel.Type: GrantFiled: May 13, 2011Date of Patent: March 17, 2015Assignee: Samsung Display Co., Ltd.Inventors: Michael Francis Higgins, Sarah Sunyoung Hwang, Anthony Botzas
-
Patent number: 8659535Abstract: A method and apparatus for adaptively controlling the backlight to reduce flicker in a display is provided. The apparatus includes a display, a backlight providing illumination for said display, a backlight control module for providing backlight control signals to said backlight, and an adaptive transition rate module. The module calculates an adaptive parameter based on a magnitude of change between backlight requirements for two frames, determining a smoothing function based on the adaptive parameter, and using said smoothing function to modify said backlight control signals. Techniques for adaptively controlling the illumination of the backlight according to the difference in the illumination levels of two different sets of image data are also disclosed.Type: GrantFiled: October 16, 2008Date of Patent: February 25, 2014Assignee: Samsung Display Co., Ltd.Inventors: Sarah Sunyoung Hwang, Anthony Botzas
-
Publication number: 20130321476Abstract: A module processes image data to provide gray level signals to be used for displaying an image. The module may include a scale value control member for determining a first scale value. The module may further include a brightness control member for determining a controlled brightness value using a requested brightness value, a brightness control parameter, and a baseline brightness value. The module may further include a modification member for determining a modified scale value using the first scale value and the controlled brightness value. The module may further include a scaler for generating the gray level signals using the image data and at least one of the modified scale value and a damped scale value, the damped scale value being determined using the modified scale value. The module may further include hardware circuitry for implementing at least one of the aforementioned components.Type: ApplicationFiled: May 31, 2012Publication date: December 5, 2013Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: Anthony BOTZAS, MoonHwan IM, Sarah Sunyoung Hwang, Candice Hellen Brown Elliott
-
Publication number: 20120287167Abstract: A display system and method for displaying an image on the display system are provided. The display system includes a display panel and a backlight for illuminating the display panel, the backlight including one or more light emitting zones that each emit light in response to a backlight drive value. The display system further includes a backlight selection module for selecting the backlight drive value for each light emitting zone from image data, an effective backlight module that generates effective backlight signals using light spread information for the backlight and the backlight drive values, and a module for modulating the image data according to the effective backlight signal and providing the modulated image data to the display panel. The light spread information includes information representing the contribution of light from each light emitting zone over the display panel.Type: ApplicationFiled: May 13, 2011Publication date: November 15, 2012Inventors: Michael Francis HIGGINS, Sarah Sunyoung Hwang, Anthony Botzas
-
Patent number: 8228357Abstract: A display system (110) has a subpixel array (120) and a light source (140). In normal mode, image data (164) are processed by the display system to generate subpixel values (174) for the subpixels (130) and to generate a light source control value (BL) for the light source (140). In bypass mode suitable for testing new types of image-data processing, the subpixel values and the light source control value are generated by an external system (210) and are provided to the display system which is operated in bypass mode. The light source control value is not provided separately from the subpixel values but is encoded into some bits of the subpixel values for compatibility with older interfaces. The light source control value is encoded into the subpixel values' MSBs in case the subpixel values could be truncated. Other features are also provided.Type: GrantFiled: July 29, 2009Date of Patent: July 24, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Moon-Hwan Im, Seok-Jin Han, Sarah Sunyoung Hwang, Bai-Shuh Hsu
-
Patent number: 8203523Abstract: Display systems that employ input gamma dithering and dynamic backlight control. Embodiments relate to disabling input gamma dithering during periods when there is a change in the scale value by which image data is scaled due to dynamic backlight control. In this manner, input gamma dithering is selectively applied only during those times when data scaling due to dynamic backlight control is constant.Type: GrantFiled: July 29, 2009Date of Patent: June 19, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Seok-Jin Han, Sarah Sunyoung Hwang
-
Patent number: 8184089Abstract: Display systems and methods for adjusting backlight illumination are disclosed for selecting a backlight illumination level that is low enough to reduce backlight power consumption while maintaining a desired level of image quality. The method 1) determines the peak illumination level requested by a frame to satisfy all pixels in a frame, 2) determines a histogram-based statistical illumination value for the frame, and 3) selects the lower of the two values. The histogram-based statistical illumination value is calculated using an error function for different ranges of illumination levels, wherein the error function correlates with luminance error introduced by selecting next lower range of illumination levels.Type: GrantFiled: July 29, 2009Date of Patent: May 22, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Anthony Botzas, Sarah Sunyoung Hwang
-
Patent number: 8139021Abstract: Displays systems and methods for adjusting backlight illumination are disclosed wherein backlight illumination may be set low enough according to an error threshold amount in order to reduce backlight power consumption while maintaining a level of image quality. In one embodiment, image data is evaluated within a given frame and partitioned into histogram bins depending on the amount of backlight illumination requested or required by the image data. The histogram is traversed to provide an accumulative error measure. The error measure is compared against the error threshold and, if exceeded, the final backlight illumination may be set as a function of various illumination levels considered and possibly the first and a second threshold.Type: GrantFiled: May 19, 2008Date of Patent: March 20, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Anthony Botzas, Sarah Sunyoung Hwang, Michael Francis Higgins, Candice Hellen Brown Elliott
-
Publication number: 20110025733Abstract: A display system (110) has a subpixel array (120) and a light source (140). In normal mode, image data (164) are processed by the display system to generate subpixel values (174) for the subpixels (130) and to generate a light source control value (BL) for the light source (140). In bypass mode suitable for testing new types of image-data processing, the subpixel values and the light source control value are generated by an external system (210) and are provided to the display system which is operated in bypass mode. The light source control value is not provided separately from the subpixel values but is encoded into some bits of the subpixel values for compatibility with older interfaces. The light source control value is encoded into the subpixel values' MSBs in case the subpixel values could be truncated. Other features are also provided.Type: ApplicationFiled: July 29, 2009Publication date: February 3, 2011Inventors: Moon-Hwan IM, Seok Jin HAN, Sarah Sunyoung HWANG, Bai-Shuh HSU
-
Publication number: 20110025592Abstract: Display systems and methods for adjusting backlight illumination are disclosed for selecting a backlight illumination level that is low enough to reduce backlight power consumption while maintaining a desired level of image quality. The method 1) determines the peak illumination level requested by a frame to satisfy all pixels in a frame, 2) determines a histogram-based statistical illumination value for the frame, and 3) selects the lower of the two values. The histogram-based statistical illumination value is calculated using an error function for different ranges of illumination levels, wherein the error function correlates with luminance error introduced by selecting next lower range of illumination levels.Type: ApplicationFiled: July 29, 2009Publication date: February 3, 2011Inventors: Anthony BOTZAS, Sarah Sunyoung HWANG
-
Publication number: 20110025591Abstract: Display systems that employ input gamma dithering and dynamic backlight control. Embodiments relate to disabling input gamma dithering during periods when there is a change in the scale value by which image data is scaled due to dynamic backlight control. In this manner, input gamma dithering is selectively applied only during those times when data scaling due to dynamic backlight control is constant.Type: ApplicationFiled: July 29, 2009Publication date: February 3, 2011Inventors: Seok-Jin HAN, Sarah Sunyoung Hwang
-
Publication number: 20090284457Abstract: Displays systems and methods for adjusting backlight illumination are disclosed wherein backlight illumination may be set low enough according to an error threshold amount in order to reduce backlight power consumption while maintaining a level of image quality. In one embodiment, image data is evaluated within a given frame and partitioned into histogram bins depending on the amount of backlight illumination requested or required by the image data. The histogram is traversed to provide an accumulative error measure. The error measure is compared against the error threshold and, if exceeded, the final backlight illumination may be set as a function of various illumination levels considered and possibly the first and a second threshold.Type: ApplicationFiled: May 19, 2008Publication date: November 19, 2009Applicant: Samsung Electronics Co., Ltd.Inventors: Anthony Botzas, Sarah Sunyoung Hwang, Michael Francis Higgins, Candice Hellen Brown Elliott
-
Publication number: 20090102783Abstract: A method and apparatus for adaptively controlling the backlight to reduce flicker in a display is provided. The apparatus includes a display, a backlight providing illumination for said display, a backlight control module for providing backlight control signals to said backlight, and an adaptive transition rate module. The module calculates an adaptive parameter based on a magnitude of change between backlight requirements for two frames, determining a smoothing function based on the adaptive parameter, and using said smoothing function to modify said backlight control signals. Techniques for adaptively controlling the illumination of the backlight according to the difference in the illumination levels of two different sets of image data are also disclosed.Type: ApplicationFiled: October 16, 2008Publication date: April 23, 2009Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sarah Sunyoung Hwang, Anthony Botzas