Patents by Inventor Darwin Chang
Darwin Chang 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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Patent number: 10503235Abstract: A wake from OFF state system is described that enhances power adapters and battery chargers that have been shut completely off in efforts to conserve energy. Wake from OFF state devices may be used to automate the otherwise tedious process of turning on a power switch. A wake from OFF state device is distinguished from a wake from sleep state device which continues to consume some amount of power to operate in a standby mode. A wake from OFF state power adapter can be turned fully off and left off indefinitely. There are no active standby circuits, no power consumption, no active logic, no emissions, no heat, when the device is in this OFF state. Wake from OFF state is useful for a variety of devices including (but not limited to) smartphones, portable computers, power tools, electric vehicles, and rechargeable batteries.Type: GrantFiled: October 24, 2017Date of Patent: December 10, 2019Inventors: Hing S Tong, Darwin Chang
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Publication number: 20190121415Abstract: A wake from OFF state system is described that enhances power adapters and battery chargers that have been shut completely off in efforts to conserve energy. Wake from OFF state devices may be used to automate the otherwise tedious process of turning on a power switch. A wake from OFF state device is distinguished from a wake from sleep state device which continues to consume some amount of power to operate in a standby mode. A wake from OFF state power adapter can be turned fully off and left off indefinitely. There are no active standby circuits, no power consumption, no active logic, no emissions, no heat, when the device is in this OFF state. Wake from OFF state is useful for a variety of devices including (but not limited to) smartphones, portable computers, power tools, electric vehicles, and rechargeable batteries.Type: ApplicationFiled: October 24, 2017Publication date: April 25, 2019Inventors: Hing S Tong, Darwin Chang
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Patent number: 8570727Abstract: A back panel for a display device, such as a flat-panel television or computer monitor, which is very thin around the edges and houses all electronics in a “spine” near the vertical center of the back of the display. The back panel provides novel heat-dissipation, arrangement of electronics to save space, forces the center of gravity forward allowing the display to be set closer to a wall, and provides less interference and signal degradation than the prior art.Type: GrantFiled: June 27, 2011Date of Patent: October 29, 2013Assignee: Westinghouse Digital, LLCInventors: Darwin Chang, Hong S. Ting, John Araki
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Publication number: 20130192583Abstract: A high temperature convection fan device that improves the operation of an oven is provided. Each oven convection fan device component is designed to withstand the harsh environment and elevated temperatures common to an oven. Sources of energy include but are not limited to wind-up springs and/or drawing electric power from the oven lamp socket. Other solutions provide additional features including but not limited to lighting, sensors, control systems and/or displays.Type: ApplicationFiled: February 1, 2012Publication date: August 1, 2013Inventors: Darwin Chang, Hing S. Tong
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Publication number: 20120314087Abstract: A visual source management system that allows simultaneous preview and control of multiple video sources and/or streams of content is provided. The processors feature easy, fast, and independent control over video and audio outputs with or without content protection. Display systems provide a number of useful configurations to allow multitasking as well as simultaneous high performance preview for easy intuitive selection of video sources for TV, television, computing, Internet, streaming, or applications.Type: ApplicationFiled: June 10, 2011Publication date: December 13, 2012Inventors: Hing S. Tong, Darwin Chang
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Publication number: 20110249388Abstract: A back panel for a display device, such as a flat-panel television or computer monitor, which is very thin around the edges and houses all electronics in a “spine” near the vertical center of the back of the display. The back panel provides novel heat-dissipation, arrangement of electronics to save space, forces the center of gravity forward allowing the display to be set closer to a wall, and provides less interference and signal degradation than the prior art.Type: ApplicationFiled: June 27, 2011Publication date: October 13, 2011Applicant: WESTINGHOUSE DIGITAL LLCInventors: Darwin Chang, Hing S. Tong, John Araki
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Patent number: 7969719Abstract: A back panel for a display device, such as a flat-panel television or computer monitor, which is very thin around the edges and houses all electronics in a “spine” near the vertical center of the back of the display. The back panel provides novel heat-dissipation, arrangement of electronics to save space, forces the center of gravity forward allowing the display to be set closer to a wall, and provides less interference and signal degradation than the prior art.Type: GrantFiled: October 4, 2006Date of Patent: June 28, 2011Assignee: Westinghouse Digital, LLCInventors: Darwin Chang, Hing S. Tong, John Araki
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Publication number: 20100292861Abstract: A method for network energy controller that can optimize total system power consumption is provided. The controller (100) collected device loads and report to a common device (270) for optimization. The controller is able to communicate both to other controllers on the same power source or to the internal device (205) that is connected to the controller. The common device is able to respond to power changes reported by controller and request other controller to reduce power so that the entire system power consumption can meet or optimized toward the power policy goal.Type: ApplicationFiled: May 18, 2009Publication date: November 18, 2010Inventors: Leonard Tsai, Darwin Chang, Hing S. Tong
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Patent number: 7636130Abstract: A video display device having an automatic input switching capability includes at least one input connector coupled to the video display device for accepting an external video signal, sensing means coupled to the at least one input connector for detecting the presence of the external video signal; control means coupled to the sensing means and video circuitry of the video display device, wherein the control means controls the operation of the video display device when a new video signal is sensed by the sensing means.Type: GrantFiled: October 14, 2004Date of Patent: December 22, 2009Inventor: Darwin Chang
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Publication number: 20090102971Abstract: A method and apparatus for automatic startup and shutdown including automatic source selection is provided for the selection of one of many video input sources provided on a visual display device in response to a new video signal being transmitted over a particular input port. The visual display device is also provided with means to power on the television in response to user input or a new video signal input source detection. The television may automatically revert to the previously-viewed source upon the powering off or lack of signal from the most newly-acquired video signal source.Type: ApplicationFiled: March 7, 2007Publication date: April 23, 2009Applicant: WESTINGHOUSE DIGITAL ELECTRONICS, LLCInventors: Darwin Chang, Hing S. Tong, Shi Kuang Tan
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Patent number: 7432991Abstract: A digital display panel accepts pixel information according to their row-column coordinates. Each pixel can be individually written and read back, much like a random access memory (RAM). A pixel array self-refreshes, and can retain and display each image frame long after the original writing, like a dynamic random access memory (DRAM). Each pixel is instrumented with a transducer to sense pressure, temperature, light, strain, etc., and provide sensor read-out data that is addressable by row-column coordinates. Such is very useful in touchscreen applications. The transducers and their corresponding pixels each have a special relationship, the transducers can directly manipulate a visual quality of the pixel through a direct connection, without intervention or assistance by a host processor.Type: GrantFiled: October 1, 2003Date of Patent: October 7, 2008Inventors: Darwin Chang, Hing S. Tong
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Publication number: 20080218634Abstract: A method and apparatus for automatic startup and shutdown including automatic source selection is provided for the selection of one of many video input sources provided on a visual display device in response to a new video signal being transmitted over a particular input port. The visual display device is also provided with means to power on the television in response to user input or a new video signal input source detection. The television may automatically revert to the previously-viewed source upon the powering off or lack of signal from the most newly-acquired video signal source.Type: ApplicationFiled: June 11, 2007Publication date: September 11, 2008Applicant: WESTINGHOUSE DIGITAL ELECTRONICS, LLCInventors: Darwin Chang, Hing S. Tong, Shikuang Tan
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Publication number: 20080186664Abstract: A back panel for a display device, such as a flat-panel television or computer monitor, which is thin around the edges and houses all electronics in a “center housing” near the vertical center of the back of the display and which houses its electronics and power supply on removable circuit boards. The back panel provides novel heat-dissipation, arranges electronics to save space and simplify repair, forces the center of gravity forward allowing the display to be set closer to a wall, and provides less interference and signal degradation than the prior art. Additionally, the removable electronics and power supply provide greater ease of repair than the prior art.Type: ApplicationFiled: January 8, 2008Publication date: August 7, 2008Applicant: WESTINGHOUSE DIGITAL ELECTRONICS, LLCInventors: Darwin Chang, Hing S. Tong, John Araki
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Publication number: 20070153454Abstract: A back panel for a display device, such as a flat-panel television or computer monitor, which is very thin around the edges and houses all electronics in a “spine” near the vertical center of the back of the display. The back panel provides novel heat-dissipation, arrangement of electronics to save space, forces the center of gravity forward allowing the display to be set closer to a wall, and provides less interference and signal degradation than the prior art.Type: ApplicationFiled: October 4, 2006Publication date: July 5, 2007Inventors: Darwin Chang, Hing S. Tong, John Araki
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Publication number: 20060221254Abstract: A video display device having an automatic input switching capability includes at least one input connector coupled to the video display device for accepting an external video signal, sensing means coupled to the at least one input connector for detecting the presence of the external video signal; control means coupled to the sensing means and video circuitry of the video display device, wherein the control means controls the operation of the video display device when a new video signal is sensed by the sensing means.Type: ApplicationFiled: October 14, 2004Publication date: October 5, 2006Inventor: Darwin Chang
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Publication number: 20050122439Abstract: An acoustic frame for use in connection with a flat-screen television includes an acoustic matte, the acoustic matte being substantially transparent to sound waves and infra-red radiation, wherein the acoustic matte is arranged so as to surround a display screen on the flat-screen television, an interchangeable art frame coupled to, and overlapping, an outer periphery of the acoustic matte, a positioning apparatus coupled to a rear surface of the acoustic matte for positioning the acoustic frame in relation to the flat-screen television, and apparatus for attaching the acoustic frame to the flat-screen television disposed on the rear surface of the acoustic matte.Type: ApplicationFiled: October 24, 2004Publication date: June 9, 2005Inventor: Darwin Chang
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Patent number: 6598076Abstract: Electronic messages with electronic attachments sent by a device over a communication network, such as the Internet or the World Wide Web, to a receiver is first stored on a server computer. The electronic attachment is opened by a computer having a program that is capable of reading the attachment. The contents of the electronic attachment are then reformatted into a second electronic message using standard protocol, such as HTML and is sent back to the receiver. Thus, the receiver will receive two electronic messages: first, the original electronic mail with the electronic attachment and a second message in which the electronic message is embedded in the message. The advantage is that a user can operate Internet appliances and/or wireless devices without the versatility of a PC and still “read” the electronic attachments to the email as well as retaining the original email with the original attachment for processing by a PC.Type: GrantFiled: May 2, 2000Date of Patent: July 22, 2003Assignee: Openshark, Inc.Inventors: Darwin Chang, Tony Tong, Robert M. Chan, R. Roderick Ang
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Publication number: 20020186329Abstract: A content-module and display-dock system comprises a cabinet with a video picture tube and loudspeaker. A module dock is provided in back to receive a variety of personality modules. Inside, a processor converts digital or analog video signals as needed. A microcomputer supports the docking module interfacing. The personality modules include Internet access, browsing, e-mail, television, video game, and other services. The modular system is customized by assembling particular modules and display docks together.Type: ApplicationFiled: June 7, 2001Publication date: December 12, 2002Applicant: EHOMETV [HK] LTD.,Inventors: Hing S. Tong, Darwin Chang, Philip K. Siu
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Patent number: 5563665Abstract: A video signal controller is used with a dual sync monitor of a digital computer. The video signal controller has a tuner to generate conventional television signals. The signals from the tuner and from the computer are supplied to a multiplexer which switches between them and supplies the output signal to a dual sync monitor. The controller has three modes of operation. In a first mode, conventional television signals are displayed on the dual sync monitor. In a second mode, conventional computer signals are displayed on the dual sync monitor. Finally, in a third mode, multi video signals may be displayed to achieve, for example, picture-in-picture for display on the monitor. Finally, a method of processing the television signals for picture-in-picture display which greatly reduces the overhead required by the CPU is also disclosed.Type: GrantFiled: December 29, 1993Date of Patent: October 8, 1996Inventor: Darwin Chang
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Patent number: D404380Type: GrantFiled: August 29, 1997Date of Patent: January 19, 1999Assignee: Princeton Graphic Systems, Inc.Inventors: Ray Ho, Charlie Pai, Paul Wang, Frank Kao, Darwin Chang, Sonja Schiefer, Daniel Harden