Patents by Inventor Chao Tan

Chao Tan 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).

  • Publication number: 20250157002
    Abstract: An image analysis method performed in a surveillance apparatus having an image receiver and a operation processor is provided. The image analysis method includes the operation processor controlling the image receiver to obtain a plurality of image frames including a first image frame and a second image frame, wherein a definition of a first feature block of the first image frame is different from a definition of a first feature block of the second image frame; and the operation processor taking the first feature block of the first image frame and the first feature block of the second image frame as training samples for training an image analysis model when the operation processor determines the first feature block of the first image frame meets a preset condition. Besides, a related surveillance apparatus is also provided.
    Type: Application
    Filed: November 12, 2024
    Publication date: May 15, 2025
    Applicant: VIVOTEK INC.
    Inventor: Chao-Tan Huang
  • Patent number: 12222220
    Abstract: A floor height detection method is applied to a surveillance camera, and a surveillance image captured by the surveillance camera contains a surveillance region. The floor height detection method includes dividing the surveillance image at least into a first region and a second region, acquiring an actual installing height matrix of the surveillance camera upon the first region and the second region, and utilizing a matrix factorization algorithm to analyze the actual installing height matrix to acquire floor heights within the surveillance region.
    Type: Grant
    Filed: November 22, 2021
    Date of Patent: February 11, 2025
    Assignee: VIVOTEK INC.
    Inventor: Chao-Tan Huang
  • Patent number: 12213512
    Abstract: Abnormally-shaped tobacco granules are provided. The tobacco granules comprise a tobacco granule body and a coating attached to the surface of the tobacco granule body. The coating contains an adhesive. The surface of the abnormally-shaped tobacco granule has one or more grooves and/or ridges, and/or, the abnormally-shaped tobacco granule has through holes therein. The surface grooves of the abnormally-shaped tobacco granules can serve as smoke channels after the tobacco granules are bonded, cured and shaped, so that the air permeability inside a total-granule tobacco product is greatly improved. The smoking resistance of cigarettes is reduced. The flammability of cigarettes is improved and the consumption of tobacco raw materials is reduced. A preparation method of the abnormally-shaped tobacco granules, a tobacco product comprising the abnormally-shaped tobacco granules, and a preparation method thereof are also provided.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: February 4, 2025
    Assignee: CHINA TOBACCO HUNAN INDUSTRIAL CO., LTD.
    Inventors: Yong Jin, Qian Chen, Ke Li, Saibo Yu, Hongmei Fan, Haifeng Tan, Shitai Wang, Chao Tan, Qi Liu
  • Patent number: 12213513
    Abstract: A low-temperature smoking body and a preparation method thereof are disclosed. The low-temperature smoking body includes tobacco particles. The tobacco particle includes a particle body and a shell wrapped on the particle body. A carrier is distributed in the particle body and/or the shell. The carrier includes at least one of a raw tobacco material, a non-tobacco material, and a porous material. The carrier carries a smoking agent, and the smoking agent includes a tobacco extract and/or an atomizer. In addition, a preparation method of the low-temperature smoking body is further disclosed. The low-temperature smoking body has better smoking stability and uniformity, and the tobacco particles having core-shell structures can effectively solve the problem of liquid leakage.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: February 4, 2025
    Assignee: CHINA TOBACCO HUNAN INDUSTRIAL CO., LTD.
    Inventors: Qian Chen, Ke Li, Yong Jin, Saibo Yu, Hongmei Fan, Shitai Wang, Chao Tan, Haifeng Tan, Qi Liu, Jianhua Yi, Wen Du, Xinqiang Yin, Xinliang Tan
  • Publication number: 20250035710
    Abstract: A battery status measurement method includes following steps. A voltage detection circuit (102) is connected to a motor (202) and a battery (204). The battery (204) provides a starting voltage (206) to the motor (202) to start the motor (202). The voltage detection circuit (102) detects the starting voltage (206) to obtain a minimum starting voltage value (208). The voltage detection circuit (102) sends the minimum starting voltage value (208) to a comparing unit (104). The comparing unit (104) compares the minimum starting voltage value (208) and a starting voltage threshold value (210) to obtain a battery status signal (212). The comparing unit (104) sends the battery status signal (212) to a display (106). The display (106) displays the battery status signal (212).
    Type: Application
    Filed: August 17, 2023
    Publication date: January 30, 2025
    Inventor: Po-Chao TAN
  • Patent number: 12194657
    Abstract: A variable-step-distance micro-milling repair cutter path generating method for damage points on a surface of an optical crystal related to a field of optical material and optical element surface repair and includes steps of establishing a mathematical model of a repair profile; determining discrete contact points between a cutter and the repair profile to obtain a cutter contact control point set by a GPR path generating method to control a movement trend of a pseudo-random path; interpolating the cutter position control point set into a spatial curve by a NURBS modeling method; creating a UG curve in a UG software according to the mathematical model, and using the UG curve as the repair path to perform a machining process simulation. The method has good elimination effects on cutter marks with constant period and improves the ability of the KDP crystal to resist strong laser damage.
    Type: Grant
    Filed: November 12, 2021
    Date of Patent: January 14, 2025
    Assignee: HARBIN INSTITUTE OF TECHNOLOGY
    Inventors: Jian Cheng, Mingjun Chen, Wenqiang Wu, Qi Liu, Hao Yang, Linjie Zhao, Chao Tan, Xumeng Cheng, Henan Liu, Tingzhang Wang
  • Patent number: 12173485
    Abstract: A device for diverting and defoaming with a bent pipe applied to a high head water supply structure includes an inner well, an outer well, a baffle, and a plurality of overflow pipes. The baffle is respectively connected with an outer wall of the inner well and an inner wall of the outer well to form an overflow groove, the top end of the inner well is higher than the baffle to form an overflow weir, one end of the overflow pipe is provided with a first pipe orifice in the overflow groove, the other end of the overflow pipe is communicated with the inner well to form a second pipe orifice, the first pipe orifice is higher than the second pipe orifice, the overflow pipe is bent in the overflow groove to form a first bending part, and the first bending part is higher than the first pipe orifice.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: December 24, 2024
    Assignee: GUANGDONG RESEARCH INSTITUTE OF WATER RESOURCES AND HYDROPOWER
    Inventors: Da Liu, Bensheng Huang, Jing Qiu, Ming Li, Chao Tan, Lei Guo
  • Publication number: 20240418788
    Abstract: A clamp meter system with a battery-internal-resistance-measuring function includes a first processing unit, an analog-to-digital converting circuit, a current-measuring circuit, a direct-current current sensor, a voltage-attenuating network and a voltage probe set. The first processing unit uses the analog-to-digital converting circuit, the current-measuring circuit, the direct-current current sensor, the voltage-attenuating network and the voltage probe set to measure a battery current and a battery total voltage of a plurality of batteries to obtain a second digital current signal and a second digital voltage signal. A first digital voltage signal subtracts the second digital voltage signal to obtain a voltage difference. The second digital current signal subtracts a first digital current signal to obtain a current difference. The voltage difference is divided by the current difference to obtain an overall internal resistance value of the batteries.
    Type: Application
    Filed: September 14, 2023
    Publication date: December 19, 2024
    Inventor: Po-Chao TAN
  • Publication number: 20240406688
    Abstract: An improved-type gateway system (10) includes an improved-type gateway (102) and a plurality of measurers (106). The measurers (106) are wirelessly connected to the improved-type gateway (102). The improved-type gateway (102) includes a gateway (142) and a display (104). The gateway (142) is wirelessly connected to the measurers (106). The display (104) is electrically connected to the gateway (142).
    Type: Application
    Filed: September 7, 2023
    Publication date: December 5, 2024
    Inventor: Po-Chao TAN
  • Patent number: 12133550
    Abstract: A molding apparatus, a cigarette filter rod and a preparation method thereof are disclosed. The molding apparatus comprises a single-screw extrusion system and a cooling setting system. The single-screw extrusion system comprises a feeder and an extruder. The feeder is arranged on the extruder. The extruder comprises a cylinder. A heater is arranged outside the cylinder. A screw is arranged inside the cylinder, and a mouth mold is arranged at one end of the cylinder. The cooling setting system comprises a round tube and a cooler. The cooler (6) is arranged outside the round tube. One end of the round tube is butted with the mouth mold of the extruder; and multiple groups of grooves are formed on threads of the head of the screw.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: November 5, 2024
    Assignee: CHINA TOBACCO HUNAN INDUSTRIAL CO., LTD.
    Inventors: Qian Chen, Yong Jin, Ke Li, Shitai Wang, Chao Tan, Saibo Yu, Haifeng Tan, Hongmei Fan, Qi Liu
  • Patent number: 12125241
    Abstract: A camera angle detection method is applied to a surveillance apparatus and includes detecting a plurality of straight lines within a surveillance image acquired by the surveillance apparatus, selecting at least one first candidate parallel line and at least one second candidate parallel line from the plurality of straight lines according to a directional trend, stretching the first candidate parallel line and the second candidate parallel line to acquire an intersection point, and computing parameter difference between the intersection point and a reference point of the surveillance image so as to transform the parameter difference to acquire a tilted angle of an optical axis of a lens of the surveillance apparatus relative to a supporting plane where the surveillance apparatus is located.
    Type: Grant
    Filed: November 30, 2021
    Date of Patent: October 22, 2024
    Assignee: VIVOTEK INC.
    Inventor: Chao-Tan Huang
  • Publication number: 20240344041
    Abstract: Technology described herein relates to a fusion protein comprising a zinc-finger domain (ZNF) of Regulating Synaptic Membrane Exocytosis Protein (RIMS); and a CaV? Ca2+ channel subunit. Compositions comprising the fusion protein and method of treatment utilizing the fusion protein are also provided herein.
    Type: Application
    Filed: November 22, 2023
    Publication date: October 17, 2024
    Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
    Inventors: Pascal S. KAESER, Chao TAN, Shan Shan WANG
  • Publication number: 20240330412
    Abstract: Systems and methods for classifying columns using a model are provided. The systems and methods access a table associated with a column of features and retrieve a list of categories each associated with a different scoring model. The systems and methods, for each category in the list of categories, apply a respective scoring model to the features of the column to generate a respective set of confidence values indicating a likelihood that the column belongs to a respective one of the categories. The systems and methods process the respective sets of confidence values to select a target category from the list of categories and associate the selected target category with the column.
    Type: Application
    Filed: March 29, 2023
    Publication date: October 3, 2024
    Inventors: Zachary Charles Frazier, Stephen Joe Jonany, Yimeng Li, Nabajyoti Patowary, Chao Tan, Yunqiao Zhang
  • Publication number: 20240283897
    Abstract: A 3D image mask analysis method is applied to an image surveillance apparatus having an image receiver and an operation processor. The 3D image mask analysis method includes establishing a 3D image mask with first depth information inside a surveillance image acquired by the image receiver, utilizing an object identification technology to acquire second depth information of a target object at least partly overlapped with the 3D image mask inside the surveillance image, and comparing the first depth information to the second depth information so as to determine whether an image of the target object is displayed inside the surveillance image in accordance with a comparison result.
    Type: Application
    Filed: January 22, 2024
    Publication date: August 22, 2024
    Applicant: VIVOTEK INC.
    Inventor: Chao-Tan Huang
  • Publication number: 20240185443
    Abstract: A calibration method of apparatus installation parameter is applied to a surveillance device having an image receiver and an operation processor. The calibration method includes analyzing a detection image from the image receiver to acquire an apparatus installation parameter of the surveillance device, computing a height of at least one target object inside the detection image in accordance with the apparatus installation parameter, analyzing the height of the at least one target object via an error function to acquire an error computed value, computing a local minimal value of the error computed value relevant to the apparatus installation parameter via a gradient descent function, and finding the local minimal value to acquire an installation parameter vector so that the surveillance device executes analysis of the detection image according to the installation parameter vector.
    Type: Application
    Filed: October 16, 2023
    Publication date: June 6, 2024
    Inventor: Chao-Tan Huang
  • Publication number: 20240144422
    Abstract: An image analysis method of increasing identification efficiency is applied to an image analysis device having an image receiver and an operation processor. The image analysis method includes setting a target pixel per feet (PPF) and detecting a specific area within a surveillance image acquired by the image receiver, computing a first dimension ratio difference between the target PPF and an initial PPF of the specific area, utilizing the first dimension ratio difference to adjust the specific area so that a second dimension ratio difference between the target PPF and an adjusted PPF of the adjusted specific area conforms to a preset condition, and utilizing the adjusted specific area with the adjusted PPF to be detection data for object detection network.
    Type: Application
    Filed: October 12, 2023
    Publication date: May 2, 2024
    Inventor: Chao-Tan Huang
  • Patent number: 11918034
    Abstract: A device and method for preparing a fully granular cigarette/filter rod, and a prepared fully granular cigarette/filter rod are disclosed. In certain embodiments, negative pressure is used to adhere granular material onto a mesh-type conveyor belt. The granular material is preliminarily formed into fully granular cigarette/filter rod material by means of a pre-forming apparatus; the fully granular cigarette/filter rod material, traveling with the mesh-type conveyor belt, enters into a forming cavity, and undergoes heating and humidifying treatment, and a continuous solid porous substance is formed; the continuous solid porous substance is moved into the cooling/drying cavity, drying and cooling treatment are performed under the action of negative pressure, and a fully granular cigarette/filter rod with strong adhesion, porosity, permeability, and appropriate moisture is obtained.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: March 5, 2024
    Assignee: CHINA TOBACCO HUNAN INDUSTRIAL CO., LTD.
    Inventors: Yong Jin, Qian Chen, Ke Li, Hongmei Fan, Saibo Yu, Shitai Wang, Chao Tan, Haifeng Tan, Qi Liu
  • Publication number: 20240046497
    Abstract: An image analysis method is applied to a camera apparatus and used to analyze the landform inside a detection image captured by the camera apparatus via a predefined installation angle. The image analysis method includes dividing the detection image into a plurality of first regions to acquire a plurality of first height, defining some first regions with the same height and adjacent to each other as a first reference plane area to acquire a first plane formula, selecting at least one first region adjacent to and outside the first reference plane area, applying the selected first region for the first plane formula to acquire a first planar height and comparing the first planar height with an initial first height of the at least one first region, and determining landform between the first reference plane area and the selected at least one first region in accordance with a comparison result.
    Type: Application
    Filed: July 11, 2023
    Publication date: February 8, 2024
    Applicant: VIVOTEK INC.
    Inventor: Chao-Tan Huang
  • Publication number: 20240046667
    Abstract: An image information transformation method is applied to an image analysis device with an operation processor and includes generating a false object datum in a predefined manner, and deciding whether to output the false object datum in accordance with an identification result of a user license.
    Type: Application
    Filed: June 30, 2023
    Publication date: February 8, 2024
    Applicant: VIVOTEK INC.
    Inventor: Chao-Tan Huang
  • Patent number: 11881769
    Abstract: A multi-level converter control method is provided that includes: acquiring an inductive current of an LC filter in a driving pulse period; determining a to-be-adjusted first switch tube and a first duty ratio adjustment amount of the to-be-adjusted first switch tube based on a slope of a rising period of the inductive current, and adjusting a duty ratio of the to-be-adjusted first switch tube based on the first duty ratio adjustment amount; and determining a to-be-adjusted second switch tube and a second duty ratio adjustment amount of the to-be-adjusted second switch tube based on a slope of a falling period of the inductive current, and adjusting a duty ratio of the to-be-adjusted second switch tube based on the second duty ratio adjustment amount.
    Type: Grant
    Filed: November 15, 2021
    Date of Patent: January 23, 2024
    Assignee: The 13th Research Institute of China Electronics Technology Group Corporation
    Inventors: Zhanbiao Gu, Zhiliang Zhang, Shipeng Cheng, Xiaoyong Ren, Senfeng Xu, Chao Tan