Patents by Inventor Sheng-Feng Lee
Sheng-Feng Lee 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: 9859900Abstract: A jitter control circuit within a chip comprises an adaptive PDN, a current generator and a jitter generator. The adaptive PDN is capable of being controlled/modulated to provide difference impedances. The current generator is coupled to the adaptive PDN, and is arranged for receiving a supply voltage provided by the adaptive PDN and generating currents with different patterns. The jitter generator is coupled to the adaptive PDN, and is arranged for generating a plurality of jitters corresponding to the currents with different patterns, respectively, according to the supply voltage provided by the adaptive PDN.Type: GrantFiled: April 6, 2016Date of Patent: January 2, 2018Assignee: MediaTek Inc.Inventors: Shang-Pin Chen, Sheng-Feng Lee
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Publication number: 20160359488Abstract: A jitter control circuit within a chip comprises an adaptive PDN, a current generator and a jitter generator. The adaptive PDN is capable of being controlled/modulated to provide difference impedances. The current generator is coupled to the adaptive PDN, and is arranged for receiving a supply voltage provided by the adaptive PDN and generating currents with different patterns. The jitter generator is coupled to the adaptive PDN, and is arranged for generating a plurality of jitters corresponding to the currents with different patterns, respectively, according to the supply voltage provided by the adaptive PDN.Type: ApplicationFiled: April 6, 2016Publication date: December 8, 2016Inventors: Shang-Pin Chen, Sheng-Feng Lee
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Publication number: 20160173082Abstract: A method and apparatus for performing impedance profile control of a power delivery network (PDN) in an electronic device are provided. The method includes the steps of: utilizing a capacitive component and a resistive component that are coupled in series as an output stage of the PDN, wherein the capacitive component includes one terminal coupled to a first voltage level of the PDN and further includes another terminal, and the resistive component includes a first terminal coupled to the other terminal of the capacitive component and further includes a second terminal coupled to a second voltage level of the PDN; and inputting a control signal into a third terminal of the resistive component, to control an impedance profile of the output stage of the PDN, wherein in a predetermined state of the control signal, the control signal is a time variant signal. The control signal may be digital or analog.Type: ApplicationFiled: August 20, 2015Publication date: June 16, 2016Inventors: Shang-Pin Chen, Sheng-Feng Lee
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Patent number: 8441583Abstract: A thin touch panel includes a transparent substrate with a black bordering around the inner surface of the transparent substrate. A plurality of metal connecting structures, metal guiding lines, transparent insulating structures and a transparent sensing layer are formed on the inner surface, so that the transparent substrate not only provides a touch surface, but also has the touch sensing ability, to decrease the manufacture material and increase the transmittance of the touch panel. Besides, the manufacture of the thin touch panel may not use any optical adhesive to decrease the manufacture cost and improve the yield. Further, the thin touch panel may satisfy the trend of thin design.Type: GrantFiled: November 16, 2012Date of Patent: May 14, 2013Assignee: Buwon Advanced Technology Co., Ltd.Inventors: Sheng-Feng Lee, Ching-Hsien Wen
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Patent number: 8339527Abstract: A thin touch panel includes a transparent substrate with a black bordering around the inner surface of the transparent substrate. A plurality of metal connecting structures, metal guiding lines, transparent insulating structures and a transparent sensing layer are formed on the inner surface, so that the transparent substrate not only provides a touch surface, but also has the touch sensing ability, to decrease the manufacture material and increase the transmittance of the touch panel. Besides, the manufacture of the thin touch panel may not use any optical adhesive to decrease the manufacture cost and improve the yield. Further, the thin touch panel may satisfy the trend of thin design.Type: GrantFiled: March 18, 2010Date of Patent: December 25, 2012Assignee: Buwon Advanced Coating Technology Co., Ltd.Inventors: Sheng-Feng Lee, Ching-Hsien Wen
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Patent number: 8010065Abstract: A power amplifier system, a control method thereof, and a control device thereof are provided. The power amplifier system operates in a non-linear switching mode according to an envelope amplitude of an input signal under control of the control device. When the power amplifier is operated in the non-linear switching mode, a supply voltage and an input signal of the power amplifier are provided to the power amplifier by the control device according to pre-measured properties of the power amplifier so as to equip the power amplifier with a high power-added efficiency (PAE) and a better linearity.Type: GrantFiled: October 31, 2008Date of Patent: August 30, 2011Assignee: Industrial Technology Research InstituteInventors: Ping-Hsun Wu, Chang-Ming Lai, Sheng-Feng Lee, Je-Kuan Jau
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Publication number: 20110007005Abstract: A thin touch panel includes a transparent substrate with a black bordering around the inner surface of the transparent substrate. A plurality of metal connecting structures, metal guiding lines, transparent insulating structures and a transparent sensing layer are formed on the inner surface, so that the transparent substrate not only provides a touch surface, but also has the touch sensing ability, to decrease the manufacture material and increase the transmittance of the touch panel. Besides, the manufacture of the thin touch panel may not use any optical adhesive to decrease the manufacture cost and improve the yield. Further, the thin touch panel may satisfy the trend of thin design.Type: ApplicationFiled: March 18, 2010Publication date: January 13, 2011Inventors: SHENG-FENG LEE, CHING-HSIEN WEN
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Patent number: 7689568Abstract: A communication system comprises a bridge device being configured to manage multi-channel communications, a host terminal coupled to the bridge device through a first network, a participant terminal coupled to the bridge device through a second network, and a broadcasting device coupled to at least one of the host terminal and the bridge device for broadcasting at least one of the participant signals from the participant terminal and the host signals from the host terminal. The host terminal is configured to receive host signals and to transmit the host signals to the bridge device. The participant terminal is configured to receive participant signals and to transmit the participant signals to the bridge device.Type: GrantFiled: December 28, 2006Date of Patent: March 30, 2010Assignee: Industrial Technology Research InstituteInventors: Johnsee Lee, Ping-Hsun Wu, Sheng-Feng Lee, Wen-Shen Feng
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Publication number: 20100033244Abstract: A power amplifier system, a control method thereof, and a control device thereof are provided. The power amplifier system operates in a non-linear switching mode according to an envelope amplitude of an input signal under control of the control device. When the power amplifier is operated in the non-linear switching mode, a supply voltage and an input signal of the power amplifier are provided to the power amplifier by the control device according to pre-measured properties of the power amplifier so as to equip the power amplifier with a high power-added efficiency (PAE) and a better linearity.Type: ApplicationFiled: October 31, 2008Publication date: February 11, 2010Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Ping-Hsun Wu, Chang-Ming Lai, Sheng-Feng Lee, Je-Kuan Jau
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Publication number: 20080159508Abstract: A communication system comprises a bridge device being configured to manage multi-channel communications, a host terminal coupled to the bridge device through a first network, a participant terminal coupled to the bridge device through a second network, and a broadcasting device coupled to at least one of the host terminal and the bridge device for broadcasting at least one of the participant signals from the participant terminal and the host signals from the host terminal. The host terminal is configured to receive host signals and to transmit the host signals to the bridge device. The participant terminal is configured to receive participant signals and to transmit the participant signals to the bridge device.Type: ApplicationFiled: December 28, 2006Publication date: July 3, 2008Inventors: Johnsee Lee, Ping-Hsun Wu, Sheng-Feng Lee, Wen-Shen Feng