Patents by Inventor Chih-Huang Wang
Chih-Huang Wang 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: 8471891Abstract: A video switching system detects speaking information of at least one speaker in a video conference according to a reference time. One participant is regarded as one speaker if the one participant speaks longer than the reference time. The video switching system determines a main speaker of the at least one speaker according to the speaking information of the at least one speaker. The video switching system calculates an image switching frequency, and determines whether to switch to a video image of the main speaker according to the image switching frequency. The video switching system calculates a response time if determining to switch to the video image of the main speaker, and adjusts the reference time according to the image switching frequency and the response time.Type: GrantFiled: April 28, 2011Date of Patent: June 25, 2013Assignee: Hon Hai Precision Industry Co., Ltd.Inventors: Chih-Huang Wang, Hsieh-Fu Tsai
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Publication number: 20120243229Abstract: A lighting device includes a lighting unit, a base, a lighting trim, a connecting unit, at least one pull rope, and a plurality of resilient latching members and linking members. The base and the lighting trim are disposed on respective ends of the lighting unit. The base has a receiving hole formed thereon. At least one hole is formed on a flange portion of the lighting trim and is corresponding to the at least one pull rope. The connecting unit is received by the receiving hole and connected between one end of the pull rope and the resilient latching members. The other end of the pull rope is passed through the hole. The resilient latching members are disposed around the base and corresponding to the respective linking members.Type: ApplicationFiled: March 6, 2012Publication date: September 27, 2012Applicants: LITE-ON TECHNOLOGY CORPORATION, SILITEK ELECTRONIC (GUANGZHOU) CO., LTD.Inventors: CHANG-MING CHENG, SHUN-CHUNG CHENG, CHIH-HUANG WANG
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Publication number: 20120236580Abstract: A luminaire includes a first body module, a light module, a second body module, a wire-receiving unit, and a wire. The light module is disposed on said first body module. The second body module is movable telescopically relative to the first body module. The wire has two ends respectively and electrically connected to the first and second body modules, and a portion that is received within the wire-receiving unit and that is movable at least partially into or out of the wire-receiving unit as a result of adjusting the length of the luminaire, thereby preventing entanglement of the wire.Type: ApplicationFiled: December 15, 2011Publication date: September 20, 2012Applicants: LITE-ON TECHNOLOGY CORP., SILITEK ELECTRONIC (GUANGZHOU) CO., LTD.Inventors: SHUN-CHUNG CHENG, CHIH-HUANG WANG, CHANG-MING CHENG
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Publication number: 20120212571Abstract: A video switching system detects speaking information of at least one speaker in a video conference according to a reference time. One participant is regarded as one speaker if the one participant speaks longer than the reference time. The video switching system determines a main speaker of the at least one speaker according to the speaking information of the at least one speaker. The video switching system calculates an image switching frequency, and determines whether to switch to a video image of the main speaker according to the image switching frequency. The video switching system calculates a response time if determining to switch to the video image of the main speaker, and adjusts the reference time according to the image switching frequency and the response time.Type: ApplicationFiled: April 28, 2011Publication date: August 23, 2012Applicant: HON HAI PRECISION INDUSTRY CO., LTD.Inventors: CHIH-HUANG WANG, HSIEH-FU TSAI
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Publication number: 20120194068Abstract: A lamp includes a housing, a plate body disposed in the housing and having a wavelength-conversion material, a light-emitting module disposed in the housing and spaced apart from the plate body, and a light sensor disposed on the plate body. The light-emitting module includes a circuit board, and a plurality of light-emitting units disposed on the circuit board and emitting light onto the plate body. The light sensor is used for sensing the color temperature of light that is emitted from the light-emitting units and that propagates within the plate body.Type: ApplicationFiled: August 9, 2011Publication date: August 2, 2012Applicants: LITE-ON TECHNOLOGY CORP., SILITEK ELECTRONIC (GUANGZHOU) CO., LTD.Inventors: SHUN-CHUNG CHENG, CHIH-HUANG WANG, CHANG-MING CHENG
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Publication number: 20120162993Abstract: A lighting device includes a base, a light source, an optical color wheel, and a lens. The base has a plurality of fins for heat dissipation. The light source is disposed in the base, and the optical color wheel is disposed above the light source and in contact with the base. The lens is movably disposed on the base. The Light from the light source passes through the optical color wheel to form colored light. The colored light passes through the lens to form a light beam. Heat generated by the light source and the optical color wheel is dissipated by the fins.Type: ApplicationFiled: September 20, 2011Publication date: June 28, 2012Applicants: LITE-ON TECHNOLOGY CORPORATION, SILITEK ELECTRONIC (GUANGZHOU) CO., LTD.Inventors: SHUN-CHUNG CHENG, CHIH-HUANG WANG, CHANG-MING CHENG
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Publication number: 20080225240Abstract: A plastic color wheel assembly includes a motor and a color filtering plate. The color filtering plate is disposed at one side of the motor and is made of plastic A projection system including the plastic color wheel is also disclosed.Type: ApplicationFiled: December 7, 2007Publication date: September 18, 2008Inventors: Kuang-Hua CHANG, Chong-Han Tsai, Kai-Hsiung Tsao, Ke-Shu Chin, Chih-Huang Wang, Shiau-Wu Lai, Guang-Yu Yu
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Publication number: 20080170314Abstract: A color wheel assembly includes a motor and a color filter. The motor has a main body and a housing. The housing is integrally formed and covers the main body. The color filter is disposed directly on the housing.Type: ApplicationFiled: December 6, 2007Publication date: July 17, 2008Inventors: Kuang-Hua Chang, Chih-Huang Wang, Ke-Shu Chin, Chong-Han Tsai, Kai Hsiung Tsao, Shiau-Wu Lai
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Publication number: 20080157004Abstract: A light tunnel includes a first optical element, a second optical element, a third optical element and a fourth optical element. The first optical element has a first recess. The second optical element is disposed opposite to the first optical element and has a second recess. The third optical element connects the first optical element with the second optical element and has one end disposed in the first recess or the second recess. The fourth optical element is disposed opposite to the third optical element, connects the first optical element with the second optical element, and has one end disposed in the first recess or the second recess. Inner surfaces of the first to fourth optical elements form a light passage. A projection system is also disclosed.Type: ApplicationFiled: March 30, 2007Publication date: July 3, 2008Inventors: Kuang-Hua Chang, Chih-Huang Wang, Jie-Hyi Chang, Shiau-Wu Lai, Kai Hsiung Tsao, Guang-Yu Yu, Wen-Hu Wang
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Patent number: 7386215Abstract: A light tunnel includes a first optical element, a second optical element, a third optical element and a fourth optical element. The first optical element has a first recess. The second optical element is disposed opposite to the first optical element and has a second recess. The third optical element connects the first optical element with the second optical element and has one end disposed in the first recess or the second recess. The fourth optical element is disposed opposite to the third optical element, connects the first optical element with the second optical element, and has one end disposed in the first recess or the second recess. Inner surfaces of the first to fourth optical elements form a light passage. A projection system is also disclosed.Type: GrantFiled: March 30, 2007Date of Patent: June 10, 2008Assignee: Prodisc Technology Inc.Inventors: Kuang-Hua Chang, Chih-Huang Wang, Jie-Hyi Chang, Shiau-Wu Lai, Kai Hsiung Tsao, Guang-Yu Yu, Wen-Hu Wang
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Publication number: 20060132947Abstract: A color wheel includes a color filter and a motor. In this case, the motor has an shaft, a rotor-oriented element, and a motor shell. The shaft is vertically installed on the rotor-oriented element. The motor shell has an opening in a direction of the shaft. The rotor-oriented element and the shaft are set inside the motor shell. The rotor-oriented element covers the opening of the motor shell, so as to form a concave portion constructed by the motor shell and the rotor-oriented element. The color filter is set on a surface of the motor, which is formed with the concave portion.Type: ApplicationFiled: March 10, 2005Publication date: June 22, 2006Inventors: Kuang-Hua Chang, Chih-Huang Wang, Ke-Shu Chin, Nai-Yueh Liang, Chong-Han Tsai
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Patent number: 7061701Abstract: A color wheel includes a motor, a covering element and a color filter. In this case, the motor has a housing and a motor body. The motor body has a central axis and the housing is set at one side of the motor body. The housing has a surface, which is opposite to the motor body. The housing and the motor body rotate around the central axis. The covering element covers one part of the housing. The color filter is set around the covering element.Type: GrantFiled: September 30, 2004Date of Patent: June 13, 2006Assignee: Prodisc Technology Inc.Inventors: Chih-Neng Chang, Chih-Huang Wang
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Publication number: 20060066969Abstract: A color wheel includes a motor, a covering element and a color filter. In this case, the motor has a housing and a motor body. The motor body has a central axis and the housing is set at one side of the motor body. The housing has a surface, which is opposite to the motor body. The housing and the motor body rotate around the central axis. The covering element covers one part of the housing. The color filter is set around the covering element.Type: ApplicationFiled: September 30, 2004Publication date: March 30, 2006Inventors: Chih-Neng Chang, Chih-Huang Wang
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Patent number: 6754014Abstract: A color wheel including a motor, a vibration damping element and a color filter. In this case, the motor has a housing and a motor body, and the housing is set at the central axis of the motor body. The vibrating damping element is set on the housing of the motor. The color filter is set on the housing of the motor, so that the vibrating damping element is positioned between the motor and the color filter. In addition, two other color wheels are provided.Type: GrantFiled: February 21, 2003Date of Patent: June 22, 2004Assignee: Prodisc Technology Inc.Inventors: Ke-Shu Chin, Chih-Neng Chang, Kuang-Hua Chang, Chih-Huang Wang, An-Hwa Yu, Yin-Tai Keng
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Patent number: 6705733Abstract: A color wheel including a motor, a color filter and a washer. The color filter is set on the motor. The washer is set both on the motor and the color filter and the color filter is set between the washer and the motor. A recess is formed between a circumferential edge of an outer surface of the washer and the color filter. In addition, the invention also provides a washer of a color wheel.Type: GrantFiled: February 21, 2003Date of Patent: March 16, 2004Assignee: Prodisc Technology Inc.Inventors: An-Hwa Yu, Ke-Shu Chin, Chih-Neng Chang, Yin-Tai Keng, Chih-Huang Wang, Kuang-Hua Chang