Patents Assigned to RoyalTek Company Ltd.
  • Patent number: 11349190
    Abstract: A flexible plate-based radar antenna device with a field of view over 160 degrees comprises a support base, two antenna boards, and a circuit board. The support base has an installation surface and two inclined surfaces. Two antenna boards are flexible plates, and their back surfaces are respectively stuck onto two inclined surfaces of the support base. Several set of antennas are disposed on front surface of the antenna boards for transmitting detection signals and receiving reflection signals from at least one obstacle. The circuit board is electrically connected with two antenna boards, controlling the antenna boards to transmit and receive signals. As long as the shape of the support base is adjusted to make the antenna boards able to stick onto it, the antenna boards of the present invention are applicable to radar devices having an arbitrary shape. Therefore, the present invention can simplify the fabrication process.
    Type: Grant
    Filed: November 30, 2020
    Date of Patent: May 31, 2022
    Assignee: Royaltek Company Ltd.
    Inventor: Ming-Hung Tsai
  • Patent number: 11231494
    Abstract: A radar system having a vehicle assist function with a field of view greater than 160 degrees is provided. The radar system includes antenna boards and a processing unit. The antenna board includes multiple antennas disposed thereon and transmitting a detection signal to detect an obstacle outside the vehicle, and then receiving a reflected signal, generated by the detection signal reflected by the obstacle. Therefore, the single radar system is enough for the vehicle assist function, and the transmitting and receiving antennas are disposed on the antenna board. The processing unit can directly analyze the reflected signal to determine a distance between the obstacle and the vehicle, and perform different vehicle assist functions having different warning distances, and when the distance between the obstacle and the vehicle is lower than one of the warning distances, the processing unit outputs a warning message to warn a driver.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: January 25, 2022
    Assignee: Royaltek Company Ltd.
    Inventors: Ming-Hung Tsai, Chun-Yen Chen
  • Publication number: 20080013605
    Abstract: A method of GPS bit synchronization is disclosed. The method includes the steps of a) receiving plural serial C/A Codes, wherein a data bit is formed by m C/A Codes; b) sequentially providing a bin number ranged from 0 to m?1 to the plural C/A Codes; c) setting a sampling value k; d) sequentially determining adjacent two C/A Codes, C/A Code nk and C/A Code (n+1)k, wherein n={0, 1, 2, 3, . . . }, and calculating a sign change aggregate value of each bin number ranged from 0 to m?1; e) repeating step d) till there are k bin numbers having the sign change aggregate value equal to or greater than a first threshold, and summing the k bin numbers for obtaining a lookup value; and f) acquiring a bit boundary of the data bit according to the lookup value in the plural serial C/A Codes.
    Type: Application
    Filed: July 12, 2006
    Publication date: January 17, 2008
    Applicant: RoyalTek Company Ltd.
    Inventor: Kuo-Wei Lin
  • Publication number: 20070038373
    Abstract: A navigating apparatus with a GPS receiver module and a TMC receiver module, and method thereof are disclosed. The apparatus includes a traffic message channel (TMC) receiver module and a global positioning system (GPS) receiver module connected by an I2C (Inter-IC) interface or any other serial/parallel transmission interfaces. Furthermore, the method includes the steps of a) receiving traffic messages via the TMC receiver module; b) receiving GPS measurements via the GPS receiver module; c) transmitting the traffic messages from the TMC receiver module to the GPS receiver module via the I2C interface; d) transforming the traffic messages and the GPS measurements into navigating messages; and e) transmitting the navigating messages to a remote client for displaying directly.
    Type: Application
    Filed: July 12, 2006
    Publication date: February 15, 2007
    Applicant: RoyalTek Company Ltd.
    Inventor: Chun-Yen Chen