Patents Assigned to VIETTEL GROUP
  • Patent number: 11650290
    Abstract: Determining a target's range profiles is an important issue for coastal surveillance radars because it can give us the knowledge about the target, for example, target's type, target's structure and its length along radial direction. Some modern radars nowaday are equipped with the feature of target's range profile extraction, but the results are not accurate due to limitations in processing algorithms. The invention “system and method of determining target's range profiles for coastal surveillance radars” solves the above problem in the direction of proposing a system of technical solutions and associated algorithm improvements.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: May 16, 2023
    Assignee: VIETTEL GROUP
    Inventors: Van Loi Nguyen, Thanh Son Le, Trung Kien Tran
  • Publication number: 20230085799
    Abstract: A self-balancing Two-Rotation Driving Mechanism (TRDM) uses parallelogram and has low weight, high load, high accuracy, quick response and good adaptation with multi equipment. A longitudinal rotation motor assembly is constrained fully with a base assembly and drives a longitudinal rotation assembly through connecting rod parallelogram. The lateral rotation motor assembly is assembled in the hub of a longitudinal rotation assembly and rotates an equipment clamping assembly in a lateral direction. Generally, the TRDM can drive equipment clamping assembly in two rotations, with longitudinal rotation in the range of ±45° and lateral rotation in range of ±20°. A rotation limitation is reached when limitation shafts touch the end of respective grooves.
    Type: Application
    Filed: August 5, 2022
    Publication date: March 23, 2023
    Applicant: VIETTEL GROUP
    Inventors: PHAM TUAN NGUYEN, KIM BAO LE, VAN DINH PHAM, ANH TUAN CAO, QUOC TOAN TRAN, DUY TUNG NGUYEN
  • Patent number: 11611154
    Abstract: A broadband dual-polarized antenna integrated high-performance balun. The antenna structure consists of three main parts: radiator, feeding structure and reflector. The radiation element consists of four radiation parts with petal shape, forming two pairs of orthogonal dipole antennas. The feeding structure consists of four circuit boards with separated lines, forming resonant structures corresponding to a balance transformer. The reflector enables to direct the beam, increasing the antenna's orientation.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: March 21, 2023
    Assignee: VIETTEL GROUP
    Inventors: Cong Kien Dinh, Hoang Linh Nguyen, Tien Manh Nguyen, Ba Dat Nguyen
  • Patent number: 11606299
    Abstract: The method for reducing impact of flapping links on performance of network devices is implemented in 3 steps: Step 1: initialize a number of points of the interface to define interface status; Step 2: add a number of points to T and change interface status to isolated; Step 3: the interface comes back to normal state; By all those steps above, the routers can reduce impact of flapping links on route calculation and its performance.
    Type: Grant
    Filed: December 31, 2020
    Date of Patent: March 14, 2023
    Assignee: VIETTEL GROUP
    Inventors: Hanh Trang Nguyen, Van Huong Tran
  • Publication number: 20230063097
    Abstract: The invention describes the electrical driving mechanism for sonic flying device in, on small airplane, UAV, Aerial observation equipment, includes: electric actuator, the first rotary shaft, the second rotary shaft, piston, cylinder cover, spring, fin, pin. The electric actuator are composed of three main parts including speed reducing gearbox, ball screw, motor, cover. The speed reducing gearbox is composed of spur gears and planetary gears. The electric actuator has small size, can be operated in high temperature, has water resistance, vibration resistance, big load, high speed, is suitable for sonic flying device and meets with working conditions.
    Type: Application
    Filed: August 5, 2022
    Publication date: March 2, 2023
    Applicant: VIETTEL GROUP
    Inventors: VAN DINH PHAM, KIM BAO LE, ANH TUAN CAO, QUOC TOAN TRAN, DUY TUNG NGUYEN, PHAM TUAN NGUYEN
  • Publication number: 20230033542
    Abstract: The invention presents a system and a method for 3D human reconstruction using a compact kit of depth cameras. Instead of using complex and expensive devices as in traditional methods, the proposed system and method employs a simple, easy-to-install system to accurately collect the human body shape. The generated model is capable of moving thanks to a skeleton system simulating the human skeleton. The proposed system includes four blocks: Data Collection Block, Point Cloud Standardization Block, Human Digitization Block and Output Block. The proposed method includes five steps: Point Cloud Collecting, Point Cloud Filtering, Point Cloud Calibrating, Point Cloud Optimizing and 3D Human Model Generating.
    Type: Application
    Filed: May 18, 2022
    Publication date: February 2, 2023
    Applicant: VIETTEL GROUP
    Inventors: Van Duc Tran, Tien Dat Nguyen, Hai Anh Nguyen, Anh Tra Duong
  • Patent number: 11563261
    Abstract: The invention proposes a four-port coupler using micro-strip line in combination with ultra-wide-band compensation circuits. It can be applied for communication systems or information machine systems. The main feature of the invention is the structure and the distribution of the components in the compensation circuit to reduce the size of the coupler. The proposed coupler includes: microstrip directional coupler and compensation circuits, in which the microstrip directional coupler consists of one main line and two secondary transmission lines; the main transmission line has two ports: input and output ports; each secondary is connected to a load and a compensation circuit. The compensation circuit is composed of a low-pass filter and two parallel attenuation regulator circuits.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: January 24, 2023
    Assignee: VIETTEL GROUP
    Inventors: Cong Kien Dinh, Hoang Linh Nguyen, Tien Manh Nguyen, Duc Phu Phung, Ba Dat Nguyen
  • Publication number: 20230016045
    Abstract: A wideband dual-polarized hourglass-shaped with wedge antenna for a 3G/4G/5G base station is designed using characteristic mode analysis to adjust resonant frequencies. The proposed antenna has a wide bandwidth when adding two pairs of wedges on the radiator, yielding two linear polarizations ±45°, and fulfilling all the requirements of 3G/4G and 5G antenna elements. The antenna is mechanically designed and easy to fabricate with die-casting, thus saving cost since only a single die is required for mass fabrication with low errors and large quantities.
    Type: Application
    Filed: May 18, 2022
    Publication date: January 19, 2023
    Applicant: VIETTEL GROUP
    Inventors: Thi Anh Vu, Trong Toan Do, Dinh Hai Truyen Hoang, Duc Nhat Nguyen, Minh Thuy Le, Van Manh Khong, Vu Xuan Trung Nguyen, Thi Them Truong
  • Publication number: 20230011635
    Abstract: The present invention provides a method of facial expression recognition including 3 steps: step 1: collecting facial expression data, which contributes to solve the problem of lacking data, disparate and bias data, that cause the overfitting problem when training the deep learning model; step 2: designing a new deep learning network that able to focus on special regions of the face to extract and learn the important features of facial expressions by intergating ensemble attention modules into basic deep network architecture like ResNet; step 3: training the ensemble attention deep learning model in step 2 on the collected dataset in step 1, using the combination of two loss functions including ArcFace and Softmax to reduce the overfitting problem.
    Type: Application
    Filed: June 30, 2022
    Publication date: January 12, 2023
    Applicant: VIETTEL GROUP
    Inventors: Thi Hanh Vu, Quang Nhat Vo, Manh Quy Nguyen, Ngoc Duong Hoang, Khac Duy Ngoc Nguyen
  • Publication number: 20230008613
    Abstract: The present invention provides a method for speech separation and recognition. The present invention overcomes the disadvantages of the existing techniques by providing automatic speech recognition and separation that helps managers see what their service agents and customers are saying. From there, quickly and objectively knowing the wishes and concerns of customers as well as whether their service agents can give accurate and correct advice. In addition, the system is constantly updated based on the semi-supervised training mechanism, which means that the system can self-learn from actual data during operation, thereby helping to improve the system's accuracy.
    Type: Application
    Filed: June 30, 2022
    Publication date: January 12, 2023
    Applicant: VIETTEL GROUP
    Inventors: Van Hai Do, Nhat Minh Le, Tung Lam Nguyen, Quang Trung Le, Tien Thanh Nguyen, Dang Linh Le, Dinh Son Dang, Thi Ngoc Anh Nguyen, Minh Khang Pham, Ngoc Dung Nguyen, Manh Quan Tran, Manh Quy Nguyen
  • Patent number: 11552732
    Abstract: The invention refers to the parallel calculation method for polarization coding (PCPE) for channel coding technique in 5th next generation mobile communication systems which includes to split N-bits input sequence into X parallel streams, each stream has Y bits; to multiply Y bits at each stream by the columns of the Kronecker matrix GY, the results are displayed in rows according to the principle of bit elimination; and to multiply the matrix obtained with the columns of the Kronecker matrix GX according to the sample repeat and scalar multiplication. In addition, the invention also refers to the polarization coding system according to the Parallel Computation for Polarization Encoding (PCPE) for the channel coding technique in the 5th next generation mobile communication system.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: January 10, 2023
    Assignee: VIETTEL GROUP
    Inventors: Thanh Bang Le, Tuan Linh Tu
  • Publication number: 20230003868
    Abstract: The patent provides the system and the method of evaluation the centroid range-bearing processing in high resolution coastal surveillance radars to solve the problem of assessing the quality of centroid processing. The provided system includes blocks: Input data block, parameter calculation block, evaluation and export result block; The provided method includes steps: Loading input data, calculating parameters, evaluating and exporting results. The system and method provided in this invention solve the issue of the quality assessment of the radar system according to the battle-technical specification at the target centroid level.
    Type: Application
    Filed: February 14, 2022
    Publication date: January 5, 2023
    Applicant: VIETTEL GROUP
    Inventors: Van Loi Nguyen, Quoc Tuan Tran, Trung Kien Tran, Van Truong Tran, Vu Hop Tran
  • Publication number: 20230004551
    Abstract: The method of processing and storing data for real time anomaly detection including steps: step 1: building a historical database over time, mean and standard deviation database; step 2: make a selection number of blocks and number of points in one block, divide historical data into equal-sized blocks and build formulas to calculate average, standard deviation of each data block and the whole data; Step 3: create a data mapping process that runs independently to read collected data, normalize data and interact with the in-memory database to write data history over time; step 4: perform data anomaly detection of new incoming data with mean, standard deviation of historical data already stored in database on read-only memory (RAM).
    Type: Application
    Filed: January 4, 2022
    Publication date: January 5, 2023
    Applicant: VIETTEL GROUP
    Inventors: Dang Sao Cao, Van Thuyet Tran, Duc Hieu Nguyen, Dinh Tam Nguyen
  • Publication number: 20230004579
    Abstract: The present invention provides a method to control and process a set of conditions in an event handling system with many complex intrinsic conditions, including: step 1: receive the list of conditions; step 2: use the list data structure; step 3: break down the conditions; step 4: Classification; step 5: link the clauses.
    Type: Application
    Filed: January 4, 2022
    Publication date: January 5, 2023
    Applicant: VIETTEL GROUP
    Inventors: Van Chung Trinh, Duc Hai Nguyen, Tuan Anh Pham, Van Manh Phan, Dinh Hung Nguyen
  • Publication number: 20230005359
    Abstract: The invention provides a method for automatically analyzing and filtering redundant alarms in radio transceiver systems consisting of the following steps: step 1: the operator shall define the relationship between the alarms, defining rules to filter redundant alarms at the FRDU block; step 2: the FSU block will detect the alarm and send it to the FAFU block; step 3: FAFU block will receive alarms from FSU, based on the rules defined in FRDU block will analyze and filter out redundant alarms; Step 4: The FSMU block will receive the alarms after being filtered, stored in the database and also send these alarms to the EMS system.
    Type: Application
    Filed: May 18, 2022
    Publication date: January 5, 2023
    Applicant: VIETTEL GROUP
    Inventors: Tien Luc Nguyen, Khac Tung Nguyen, Khanh Nguyen, Trong Duc Nguyen, Viet Long Nguyen
  • Publication number: 20230005231
    Abstract: The Invention presents a system and a method for digitizing a human body shape from anthropometrical measurements. The proposed system and method allow reconstructing the 3D human body quickly and accurately, improving disadvantages of costly and timely traditional methods, which not only requires digitized persons to be naked or wear tight clothes but also could use hazardous lights to their health. The system in the invention includes two main modules and two supplementary blocks to reconstruct the 3D human body from anthropometric measurements, which are: (1) Input Block, (2) Pre-Processing Module, (3) Optimization Module, (4) Output Block. The method in the invention includes four steps: (1) Step 1a: collecting human body measurements, (2) Steps 1b: Initial Population; (3) Step 2: Optimizing; (4) Step 3: Displaying digitized human body shape.
    Type: Application
    Filed: January 4, 2022
    Publication date: January 5, 2023
    Applicant: VIETTEL GROUP
    Inventors: Ngoc Thach Hoang, Tien Dat Nguyen
  • Patent number: 11526813
    Abstract: Embodiments of the present invention proposes a method to automatically identify the flying targets by physical information (coordinates, heading, speed), time, and identification information (3/A code). This method includes two steps: features extraction and building machine learning model. In the features extraction step, features which are extracted include: cell indexes corresponding to coordinates, information of flight path, time in day/night format, heading, speed, and 3/A code, constructing n-dimensional vector. This vector is used as input for training a Random Forest model, to automatically identify class label of flying targets.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: December 13, 2022
    Assignee: VIETTEL GROUP
    Inventors: Anh Tuan Nguyen, Quang Bang Nguyen, Thanh Binh Nguyen
  • Patent number: 11519784
    Abstract: The invention proposed the thermal imaging radar includes of main components: Assembly pedestal, Assembly rotary shaft, and Assembly housing. Electronic circuits, encoders, mechanisms, motor are optimized arranged and scientifically designed the layout space and the weight of the structure. This device is compact for camouflage purposes, easy to assemble or disassemble, and waterproof. The invention's products can be applied in automatic security station, produces 360-degree panoramic imaging of the continuously day and night for surveillance area, detects and tracks moving objects captured by the thermal sensor. Furthermore, The product is also applicable for monitoring the ambient temperature in large areas, localizing high-temperature areas to recognize and warn the possible explosions.
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: December 6, 2022
    Assignee: VIETTEL GROUP
    Inventors: Duy Nhat Tran, Tien Hai Tran, Quang Trung Trinh, Anh Dan Do
  • Publication number: 20220348400
    Abstract: A gas turbine storage container is composed of a horizontal cylindrical shell with openings at two opposite ends of the cylinder, outside is designed with frames to keep it fixed and has straps to install ropes when hoisting. The inside of the cylindrical shell is pumped with inert gas and contains desiccant. The engine is housed in a mount that can be fixed to the inside of the box, and has wheels to make it possible to move it out of the box. A sensor system that measures the temperature and humidity status inside the cylindrical shell can provide information about the quality of the gas stored in the cylindrical shell in real time without opening.
    Type: Application
    Filed: April 22, 2022
    Publication date: November 3, 2022
    Applicant: VIETTEL GROUP
    Inventors: NGOC DUNG PHAM, DUY HAI TRAN, TUAN ANH NGUYEN, VAN NAM NGUYEN, NHU VU HOANG, HUY HOANG NGUYEN
  • Patent number: 11484814
    Abstract: A centrifugal pump separating gases from liquids pumps fluid containing gas comprises a pump housing divided into a working fluid chamber and an empty chamber by a baffle, the empty chamber connected to the working fluid chamber by an opening and connected to a gas separation assembly by a pumping chamber duct; an inlet for drawing liquid into pump, a outlet for pumping liquid outward and a separated gas exhaust port; an electric motor with protective cover drives an impeller cluster to create rotary movement; gas separator has a spring of sufficient hardness to control the gas discharge valve to open and close; this gas separator is connected to the empty chamber by the duct mentioned above and connected to the pump outlet by the bleed hole. During operation, when suction gas reaches a certain amount, reduced pressure at the pump outlet opens the valve to release the gas.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: November 1, 2022
    Assignee: VIETTEL GROUP
    Inventors: Xuan Hai Mai, Hong Phu Pham, Trong Dai Vu