Patents by Inventor Da-Wei Liu
Da-Wei 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: 11972583Abstract: The present disclosure provides a fluorescence image registration method, the method includes: acquiring a fluorescence image of a biochip; selecting a preset local region of the fluorescence image; acquiring a position of a minimum value of a sum of brightness values of pixels in a first direction and a second direction, and obtaining pixel-level registration points; dividing the pixel-level registration points into non-defective pixels and defective pixels; if the fluorescence image meets the preset standard, correcting positions of the defective pixels according to positions of the non-defective pixels; acquiring a position of a center of gravity of image points of fluorescent molecules according to a center of gravity method; fitting straight lines in the first direction and the second direction respectively according to the position of the center of gravity; and acquiring boundary points of the fluorescence image and calculating the positions of the boundary points.Type: GrantFiled: January 31, 2019Date of Patent: April 30, 2024Assignee: BGI SHENZHENInventors: Jin-Jin Shen, Da-Wei Li, Yang-Bao Liu, Ge Feng, Mei Li, Yu-Xiang Li
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Publication number: 20190370902Abstract: A deep learning method for predicting at least one future price of a financial product includes generating a plurality of candlesticks over historical trading data of the financial product, inputting the plurality of candlesticks to a neural network machine, the neural network machine processing the plurality of candlesticks to generate a trained neural network model, and a neural network predicting machine predicting the at least one future price of the financial product according to the trained neural network model.Type: ApplicationFiled: May 29, 2019Publication date: December 5, 2019Inventors: Shang-Jyh Yiin, Chih-Ming Lai, Da-Wei Liu, Che-Yu Chuang
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Patent number: 9138898Abstract: Removal mechanism for holding a PCB includes a suction cup, a floating pin comprising a rod and a frustum-shaped head at an end, a connecting member and a positioning board for supporting the PCB opposite to a positioning surface of the suction cup, the positioning board forming a positioning post corresponding to a pinhole of the suction cup. The positioning surface of the suction cup is for holding the PCB, and defines a pinhole having a frustum-shaped opening at the positioning surface. The connecting member defines a limiting hole for receiving the head of the floating pin. The opening has an angled sliding surface, and the end of the floating pin away from the head is connected to the suction cup, and an axial and radial movement of the floating pin adjusts relative position of the suction cup and the positioning post for aligning the positioning post and the pinhole.Type: GrantFiled: August 9, 2010Date of Patent: September 22, 2015Assignees: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.Inventor: Da-Wei Liu
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Patent number: 8561975Abstract: A rotary joint includes a shaft, at least one input member defining an input hole rotatably sleeved on the shaft, and a plurality of sealing members positioned between the shaft. the at least one input member and an output member are fixed on the shaft. The shaft, the at least one input member, and the sealing members defines a circular channel cooperatively communicating with the input hole. The output member defines at least one output hole corresponding to the input member. The shaft defines at least one transmission hole intercommunicating the at least one output hole and the circular channel.Type: GrantFiled: December 30, 2010Date of Patent: October 22, 2013Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Zhen-Xing Liu, Da-Wei Liu
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Patent number: 8365632Abstract: A Cartesian coordinate robot includes a first transmission mechanism slidably connected to a second transmission mechanism, a third transmission mechanism slidably connected to the second transmission mechanism. The first transmission mechanism includes a first guide rail, a first slider slidably connected to the first guide rail, and a first driving module driving the first slider. The second transmission mechanism includes a second guide rail perpendicular to the first guide rail, a second slider slidably connected to the second guide rail, and a second driving module driving the second slider. The third transmission mechanism includes a third guide rail perpendicular to the first guide rail and the second rail, a third slider slidably connected to the third guide rail, and a third driving module driving the third slider.Type: GrantFiled: January 27, 2010Date of Patent: February 5, 2013Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Wen-Sheng Chen, Da-Wei Liu
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Patent number: 8281963Abstract: A dispensing apparatus includes a mounting plate and a dispenser fixed to the mounting plate. The dispenser includes a nozzle valve, a valve plug, an actuating shaft, and a nozzle. The nozzle valve defines a cavity containing a material, and defines an inlet opening on a sidewall thereof to communicate with the cavity. The valve plug is disposed in the cavity. The actuating shaft extends through an end of the nozzle valve, and is connected to the valve plug. The nozzle is disposed at the other end of the nozzle valve facing the actuating shaft. The actuating shaft moves the valve plug away from or closer to the nozzle so as to close or open the inlet opening.Type: GrantFiled: February 5, 2010Date of Patent: October 9, 2012Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventor: Da-Wei Liu
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Patent number: 8246288Abstract: A manipulator includes a support arm, a grasping member, and a connecting assembly. The connecting assembly connects the support arm with the grasping member. A base is fixed to the support arm, and the holder is fixed to the base. The holder defines an assembling hole, and a perimeter of the assembling hole increases along a direction towards the base. The connecting member has a first assembling portion received in the assembling hole of the holder. The elastic member is positioned between the base and the connecting member, thus producing an elastic force to drive the connecting member to resist the holder.Type: GrantFiled: July 10, 2009Date of Patent: August 21, 2012Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Da-Wei Liu, Hai-Yuan Li
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Publication number: 20110266732Abstract: A rotary joint includes a shaft, at least one input member defining an input hole rotatably sleeved on the shaft, and a plurality of sealing members positioned between the shaft. the at least one input member and an output member are fixed on the shaft. The shaft, the at least one input member, and the sealing members defines a circular channel cooperatively communicating with the input hole. The output member defines at least one output hole corresponding to the input member. The shaft defines at least one transmission hole intercommunicating the at least one output hole and the circular channel.Type: ApplicationFiled: December 30, 2010Publication date: November 3, 2011Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.Inventors: ZHEN-XING LIU, DA-WEI LIU
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Publication number: 20110132125Abstract: A Cartesian coordinate robot includes a first transmission mechanism slidably connected to a second transmission mechanism, a third transmission mechanism slidably connected to the second transmission mechanism. The first transmission mechanism includes a first guide rail, a first slider slidably connected to the first guide rail, and a first driving module driving the first slider. The second transmission mechanism includes a second guide rail perpendicular to the first guide rail, a second slider slidably connected to the second guide rail, and a second driving module driving the second slider. The third transmission mechanism includes a third guide rail perpendicular to the first guide rail and the second rail, a third slider slidably connected to the third guide rail, and a third driving module driving the third slider.Type: ApplicationFiled: January 27, 2010Publication date: June 9, 2011Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.Inventors: WEN-SHENG CHEN, DA-WEI LIU
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Publication number: 20110113622Abstract: Removal mechanism for holding a PCB includes a suction cup, a floating pin comprising a rod and a frustum-shaped head at an end, a connecting member and a positioning board for supporting the PCB opposite to a positioning surface of the suction cup, the positioning board forming a positioning post corresponding to a pinhole of the suction cup. The positioning surface of the suction cup is for holding the PCB, and defines a pinhole having a frustum-shaped opening at the positioning surface. The connecting member defines a limiting hole for receiving the head of the floating pin. The opening has an angled sliding surface, and the end of the floating pin away from the head is connected to the suction cup, and an axial and radial movement of the floating pin adjusts relative position of the suction cup and the positioning post for aligning the positioning post and the pinhole.Type: ApplicationFiled: August 9, 2010Publication date: May 19, 2011Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.Inventor: DA-WEI LIU
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Publication number: 20110095056Abstract: A dispensing apparatus includes a mounting plate and a dispenser fixed to the mounting plate. The dispenser includes a nozzle valve, a valve plug, an actuating shaft, and a nozzle. The nozzle valve defines a cavity containing a material, and defines an inlet opening on a sidewall thereof to communicate with the cavity. The valve plug is disposed in the cavity. The actuating shaft extends through an end of the nozzle valve, and is connected to the valve plug. The nozzle is disposed at the other end of the nozzle valve facing the actuating shaft. The actuating shaft moves the valve plug away from or closer to the nozzle so as to close or open the inlet opening.Type: ApplicationFiled: February 5, 2010Publication date: April 28, 2011Applicants: HON FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.Inventor: DA-WEI LIU
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Publication number: 20100271762Abstract: A shielding device provides a housing, a lid and a connection hole, and the shielding device is fireproof, insulating, and easy for wire assembly. The housing is disposed on an electronic device and surrounds the electronic device. The housing has at least one opening corresponding to a connector of the electronic device. The perimeter of the lid is connected to the perimeter of the opening, so that the lid can cover the opening to shield the connector. The connection hole is disposed on at least one of the perimeter of the opening and the perimeter of the lid. When the lid covers the opening of the housing, at least one connecting wire of the electronic device can extend outwardly through the shielding device via the connection hole.Type: ApplicationFiled: October 27, 2009Publication date: October 28, 2010Inventors: Chin-Fu Chiang, Chih-Wen Li, Da-Wei Liu, Wei-Chen Yu
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Publication number: 20100158655Abstract: A manipulator includes a support arm, a grasping member, and a connecting assembly. The connecting assembly connects the support arm with the grasping member. A base is fixed to the support arm, and the holder is fixed to the base. The holder defines an assembling hole, and a perimeter of the assembling hole increases along a direction towards the base. The connecting member has a first assembling portion received in the assembling hole of the holder. The elastic member is positioned between the base and the connecting member, thus producing an elastic force to drive the connecting member to resist the holder.Type: ApplicationFiled: July 10, 2009Publication date: June 24, 2010Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO, LTD., HON HAI PRECISION INDUSTRY CO., LTD.Inventors: DA-WEI LIU, HAI-YUAN LI
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Patent number: 5926148Abstract: First and second tandemly positioned electrically biased semiconductor members radiate microwave energy in response to the receipt of an excitation light beam having two wavelengths related to the bandgaps of the members. The projected microwave beam may be made more narrow and directional if two of the members are electrically biased at the same time. An inefficient frequency doubler generates the two wavelength beam enabling a single light beam to excite both members in a simple, rugged photoconductive antenna element.Type: GrantFiled: August 25, 1997Date of Patent: July 20, 1999Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: David Da-Wei Liu, Paul H. Carr, Steven D. Mittleman
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Patent number: D622299Type: GrantFiled: March 12, 2010Date of Patent: August 24, 2010Assignee: Hon Hai Precision Industry Co., Ltd.Inventor: Da-Wei Liu