Patents by Inventor Chun-Nan Liu
Chun-Nan Liu 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: 10696258Abstract: A vehicle window structure for preventing a person from being thrown out, applied to a vehicle, includes a fixing frame. An inner frame surface of the fixing frame is provided with a plurality of fixing portions spaced apart from each other. An arresting net includes at least one plastic rope fixedly connected to the fixing portions in an interlaced manner. The fixing frame is provided with a light-permeable unit that is mounted and fixed within the inner frame surface and covers the arresting net. When the vehicle has an accidental rollover unfortunately, even if the light-permeable unit is damaged or the fixing frame is deformed during the overturning of the vehicle, the arresting net is still able to arrest the user effectively because the arresting net is directly fixed to the fixing frame, thereby preventing the user from being thrown out of the vehicle.Type: GrantFiled: November 14, 2018Date of Patent: June 30, 2020Inventor: Chun-Nan Liu
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Publication number: 20190275975Abstract: A vehicle window structure for preventing a person from being thrown out, applied to a vehicle, includes a fixing frame. An inner frame surface of the fixing frame is provided with a plurality of fixing portions spaced apart from each other. An arresting net includes at least one plastic rope fixedly connected to the fixing portions in an interlaced manner. The fixing frame is provided with a light-permeable unit that is mounted and fixed within the inner frame surface and covers the arresting net. When the vehicle has an accidental rollover unfortunately, even if the light-permeable unit is damaged or the fixing frame is deformed during the overturning of the vehicle, the arresting net is still able to arrest the user effectively because the arresting net is directly fixed to the fixing frame, thereby preventing the user from being thrown out of the vehicle.Type: ApplicationFiled: November 14, 2018Publication date: September 12, 2019Inventor: Chun-Nan LIU
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Publication number: 20190191439Abstract: A communication system, a coordinator and an interference controlling method are provided. The communication system includes at least two user equipments, at least two remote radio heads (RRHs) and the coordinator. Each of the RRHs electrically connects a plurality of antennas. The coordinator includes a scanning unit, a storing unit and a scheduling unit. The scanning unit operates the measurement of a performance of each of the antennas used for each of the user equipments by antenna sweeping. The RRHs are classified into at least one group. The scheduling unit schedules the communication of the user equipments. At least some of the user equipments using the same one of the at least one group are scheduled in different time slots to prevent from interference.Type: ApplicationFiled: December 28, 2017Publication date: June 20, 2019Inventors: Shih-Hao Fang, Jen-Yuan Hsu, Jiun-You Lai, Chun-Nan Liu
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Publication number: 20190173531Abstract: A multi-cell coordination system and method are provided in the disclosure. The multi-cell coordination system includes a plurality of Radio Frequency Nodes (RFNs) and a Baseband Processing Node (BPN). Each of the RFNs includes a baseband circuit, a radio frequency (RF) circuit, and a plurality of transmission ports. The RF circuit is electrically connected to the baseband circuit and to one or more antennas. The transmission ports of each RFN are configured to transmit data to the other RFNs and to receive data provided by the other RFNs. The BPN centralizes and performs layer 2 and layer 3 functions of each cell.Type: ApplicationFiled: December 22, 2017Publication date: June 6, 2019Inventors: Sheng-Bang CHANG, Chun-Nan LIU, Jen-Yuan HSU
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Patent number: 10011242Abstract: A vehicle device for protecting passengers from being thrown out is disposed at an inner side of a window of a vehicle. The vehicle device includes two rail units disposed at two opposing sides of the window and a block unit disposed between the rail units. The block unit is connected with a drive unit. The drive unit is connected with a control unit. When the control unit detects that the vehicle is about to roll, the control unit will actuate the drive unit to drive the block unit so that the block unit is rapidly unfolded to block the entire window. Thereby, when the vehicle is rolling, the vehicle device can effectively protect the passengers from being thrown out of the vehicle, improving the safety of the vehicle greatly.Type: GrantFiled: February 20, 2017Date of Patent: July 3, 2018Inventor: Chun-Nan Liu
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Publication number: 20170369015Abstract: A vehicle device for protecting passengers from being thrown out is disposed at an inner side of a window of a vehicle. The vehicle device includes two rail units disposed at two opposing sides of the window and a block unit disposed between the rail units. The block unit is connected with a drive unit. The drive unit is connected with a control unit. When the control unit detects that the vehicle is about to roll, the control unit will actuate the drive unit to drive the block unit so that the block unit is rapidly unfolded to block the entire window. Thereby, when the vehicle is rolling, the vehicle device can effectively protect the passengers from being thrown out of the vehicle, improving the safety of the vehicle greatly.Type: ApplicationFiled: February 20, 2017Publication date: December 28, 2017Inventor: Chun-Nan LIU
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Patent number: 9086341Abstract: A multi-filter PM 10-PM 2.5 sampler which enable the simultaneous collection of four PM 10 and four PM 2.5 samples is disclosed. The sampler is provided with a PM 10 impactor to remove coarse particles and operates at 33.4 L/min. After the PM 10 impactor, the aerosol flow is divided by half by a branch pipe. Half of the flow is directed into four PM 10 cassettes, while the other half is directed into four PM 2.5 cassettes after the aerosols are further classified by a PM 2.5 impactor. To ensure the aerosol flow uniformly passes through each of the four PM 10 or four PM 2.5 cassettes, an orifice plate is assembled behind each of the filter cassettes to increase the pressure drop, such that the flow rates of eight sampling lines are nearly equal.Type: GrantFiled: March 14, 2012Date of Patent: July 21, 2015Assignee: NATIONAL CHIAO TUNG UNIVERSITYInventors: Chuen-Jinn Tsai, Chun-Nan Liu
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Patent number: 8991271Abstract: A portable nanoparticle sampler for collecting respirable particulate matters and nanoparticles is composed of a tangential flow cyclone, a multi-microorifice impactor and a filter cassette. The tangential flow cyclone can remove the microparticles with cutoff aerodynamic diameter (dpa) larger than 4 ?m and guide the airflow to the multi-microorifice impactor located below the cyclone. The multi-microorifice impactor includes a multi-orifice nozzle and a rotary impaction plate for enabling the microparticles with dpa from 100 nm to 4 ?m to be uniformly collected on a silicone-oil-coated impaction substrate. The remnant microparticles with dpa smaller than 100 nm are collected by the filter cassette. Therefore, compared with the prior art, the portable nanoparticle sampler is characterized by low pressure loss and accurate microparticle sizing to meet the requirement of nanoparticle sampling at workplaces.Type: GrantFiled: August 30, 2012Date of Patent: March 31, 2015Assignee: Institute of Occupational Safety and HealthInventors: Shi-nian Uang, Chuen-Jinn Tsai, Chun-Nan Liu, Shao-Ming Hung
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Publication number: 20140196285Abstract: A method for making a heat column includes a step of preparing a section of a metal object; a step of forging the section of the metal object to be a hollow column which has a flat bottom, a guide surface being formed in the inner periphery of the hollow column, the hollow column having a flat bottom which has a heat-exchange surface; a step of making a neck on one end of the hollow column, and a step of sealing the neck by way of welding when the interior of the hollow column is sucked to be substantial vacuum status, liquid high heat transmission agent being introduced into the interior of the hollow column. The flat bottom is integral formed when the hollow column is formed and the flat bottom is in contact with the heat source.Type: ApplicationFiled: January 11, 2013Publication date: July 17, 2014Applicant: NTIS ENTERPRISE CO., LTD.Inventors: Chien-Shun Chao, Tsan-Wen Chuang, Chun-Hsiang Chan, Shih-Chih Liu, Chun-Nan Liu
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Publication number: 20140060213Abstract: A portable nanoparticle sampler for collecting respirable particulate matters and nanoparticles is composed of a tangential flow cyclone, a multi-microorifice impactor and a filter cassette. The tangential flow cyclone can remove the microparticles with cutoff aerodynamic diameter (dpa) larger than 4 ?m and guide the airflow to the multi-microorifice impactor located below the cyclone. The multi-microorifice impactor includes a multi-orifice nozzle and a rotary impaction plate for enabling the microparticles with dpa from 100 nm to 4 ?m to be uniformly collected on a silicon-oil-coated impaction substrate. The remanent microparticles with dpa smaller than 100 nm are collected by the filter cassette. Therefore, compared with the prior art, the portable nanoparticle sampler is characterized by low pressure loss and accurate microparticle sizing to meet the requirement of nanoparticle sampling at workplaces.Type: ApplicationFiled: August 30, 2012Publication date: March 6, 2014Inventors: Shi-nian Uang, Chuen-Jinn Tsai, Chun-Nan Liu, Shao-Ming Hung
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Publication number: 20130036837Abstract: A multi-filter PM 10-PM 2.5 sampler which enable the simultaneous collection of four PM 10 and four PM 2.5 samples is disclosed. The sampler is provided with a PM 10 impactor to remove coarse particles and operates at 33.4 L/min. After the PM 10 impactor, the aerosol flow is divided by half by a branch pipe. Half of the flow is directed into four PM 10 cassettes, while the other half is directed into four PM 2.5 cassettes after the aerosols are further classified by a PM 2.5 impactor. To ensure the aerosol flow uniformly passes through each of the four PM 10 or four PM 2.5 cassettes, an orifice plate is assembled behind each of the filter cassettes to increase the pressure drop, such that the flow rates of eight sampling lines are nearly equal.Type: ApplicationFiled: March 14, 2012Publication date: February 14, 2013Applicant: NATIONAL CHIAO TUNG UNIVERSITYInventors: Chuen-Jinn Tsai, Chun-Nan Liu
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Patent number: 8130607Abstract: An apparatus for detecting burst cutting areas on optical discs includes an optical pickup head, a front-end processing unit, a sync pattern detector, a channel clock recovery device, and a data demodulator. The front-end processing unit generates a BCA signal in response to a radio frequency signal. The sync pattern detector counts the BCA signal according to a reference clock, detects a sync pattern of the BCA signal and outputs a channel bit length counting value. The channel clock recovery device generates a channel clock according to the reference clock and the channel bit length counting value. The data demodulator transfers the BCA signal into a BCA data according to the channel clock. The sync pattern detector continuously counts the BCA signal and continuously outputs a plurality of counting values, so that the sync pattern of the BCA signal can be determined according to at least three sequential counting values.Type: GrantFiled: September 23, 2009Date of Patent: March 6, 2012Assignee: Sunplus Technology Co., Ltd.Inventors: Chia-Ming Chang, Chun-Nan Liu, Ping-Chiang Yang
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Patent number: 8009522Abstract: A focusing servo device, an optical disc recording/reproducing device and a focus-searching method are provided for making a focus of an energy beam emitted by a pick-up unit to fall in an accessible range of a data layer of a disc. The method comprises the following steps: recording the deviation of the focal point during each predetermined period when the focal point of the energy beam is fallen in the accessible range such that the optical disc recording/reproducing device is operated in a feedback control mode; determining a focus-searching range based on the recorded deviation of the focal point; and moving the focal point in the focus-searching range to make the focal point to fall in the accessible range when the focal point of the energy beam is fallen out of the accessible range such that the optical disc recording/reproducing device is operated in a focus-searching mode.Type: GrantFiled: August 4, 2005Date of Patent: August 30, 2011Assignee: Sunplus Technology Co., Ltd.Inventors: Chun-Nan Liu, Shih-Hsien Liu
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Patent number: 7917370Abstract: A configurable common filterbank processor applicable for various audio standards and its processing method. Inverse modified discrete cosine transform (IMDCT) and window and overlap-add (WOA) decoding operations required by AC-3 and AAC, and IMDC, WOA, and matrixing decoding operations required by MP3 are divided into several different modes, and a quick algorithm is provided for expediting the operation of these modes, and a hardware architecture is designed universally for these modes, so that the hardware architecture can be applicable for the decoding operations of three different audio standards, respectively AC-3, AAC and MP3, to expand the scope of applicability of a decoder.Type: GrantFiled: November 5, 2007Date of Patent: March 29, 2011Assignee: National Central UniversityInventors: Tsung-Han Tsai, Chun-Nan Liu, Hsing-Chuang Liu
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Publication number: 20100135137Abstract: An apparatus for detecting burst cutting areas on optical discs includes an optical pickup head, a front-end processing unit, a sync pattern detector, a channel clock recovery device, and a data demodulator. The front-end processing unit generates a BCA signal in response to a radio frequency signal. The sync pattern detector counts the BCA signal according to a reference clock, detects a sync pattern of the BCA signal and outputs a channel bit length counting value. The channel clock recovery device generates a channel clock according to the reference clock and the channel bit length counting value. The data demodulator transfers the BCA signal into a BCA data according to the channel clock. The sync pattern detector continuously counts the B CA signal and continuously outputs a plurality of counting values, so that the sync pattern of the BCA signal can be determined according to at least three sequential counting values.Type: ApplicationFiled: September 23, 2009Publication date: June 3, 2010Applicant: Sunplus Technology Co., Ltd.Inventors: Chia-Ming Chang, Chun-Nan Liu, Ping-Chiang Yang
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Patent number: 7719941Abstract: A method for identifying an optical disk according to a radio frequency integration filtering signal includes the steps of: moving an optical head to an initial position; rotating the optical disk and making focus, moving the optical head in a direction toward an inner ring until the optical head is moved to a home position or the focus fails, reading the radio frequency integration filtering signal, and recording a maximum and a minimum thereof when the optical head is being moved; stopping the optical head and determining whether a difference between the maximum and the minimum is greater than a predetermined threshold value; setting the optical disk as a second type of disk if the difference is greater than the predetermined threshold value; and setting the optical disk as a first type of disk if the difference is smaller than or equal to the predetermined threshold value.Type: GrantFiled: July 19, 2007Date of Patent: May 18, 2010Assignee: Sunplus Technology Co., Ltd.Inventors: Chun Nan Liu, Yi Chun Lin
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Publication number: 20090063160Abstract: A configurable common filterbank processor applicable for various audio standards and its processing method. Inverse modified discrete cosine transform (IMDCT) and window and overlap-add (WOA) decoding operations required by AC-3 and AAC, and IMDC, WOA, and matrixing decoding operations required by MP3 are divided into several different modes, and a quick algorithm is provided for expediting the operation of these modes, and a hardware architecture is designed universally for these modes, so that the hardware architecture can be applicable for the decoding operations of three different audio standards, respectively AC-3, AAC and MP3, to expand the scope of applicability of a decoder.Type: ApplicationFiled: November 5, 2007Publication date: March 5, 2009Inventors: Tsung-Han Tsai, Chun-Nan Liu, Hsing-Chuang Liu
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Publication number: 20060262674Abstract: A focusing servo device, an optical disc recording/reproducing device and a focus-searching method are provided for making a focus of an energy beam emitted by a pick-up unit to fall in an accessible range of a data layer of a disc. The method comprises the following steps: recording the deviation of the focal point during each predetermined period when the focal point of the energy beam is fallen in the accessible range such that the optical disc recording/reproducing device is operated in a feedback control mode; determining a focus-searching range based on the recorded deviation of the focal point; and moving the focal point in the focus-searching range to make the focal point to fall in the accessible range when the focal point of the energy beam is fallen out of the accessible range such that the optical disc recording/reproducing device is operated in a focus-searching mode.Type: ApplicationFiled: August 4, 2005Publication date: November 23, 2006Inventors: Chun-Nan Liu, Shih-Hsien Liu
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Patent number: 6996874Abstract: An air jet for a machine tool to clean cutting dust has a housing with a hole and an outlet. An eccentric member has a cam and is provided in the housing which the eccentric member is driven by a power resource of the machine tool for rotation. An annular transmission is engaged with the eccentric member. A driving member is driven by the transmission for linear reciprocating motion. A flexible film is provided in the housing covering the outlet and has an inlet corresponding to the driving member, wherein the inlet of the film is sealed and the film is pressed for strain while the driving member is moved toward the film, and a tube has an end thereof connected with the outlet.Type: GrantFiled: May 16, 2003Date of Patent: February 14, 2006Assignee: QAV Equipment and Tools Inc.Inventor: Chun-Nan Liu
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Publication number: 20040205924Abstract: An air jet for a machine tool to clean cutting dust has a housing with a hole and an outlet. An eccentric member has a cam and is provided in the housing which the eccentric member is driven by a power resource of the machine tool for rotation. An annular transmission is engaged with the eccentric member. A driving member is driven by the transmission for linear reciprocating motion. A flexible film is provided in the housing covering the outlet and has an inlet corresponding to the driving member, wherein the inlet of the film is sealed and the film is pressed for strain while the driving member is moved toward the film, and a tube has an end thereof connected with the outlet.Type: ApplicationFiled: May 16, 2003Publication date: October 21, 2004Applicant: OAV EQUIPMENT & TOOLS, INC.Inventor: Chun-Nan Liu