Patents by Inventor Hangmin JO

Hangmin JO 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).

  • Dual-mode transmitter for low-power double-data rate (LPDDR)interface
    Patent number: 12700984
    Abstract: A dual-mode transmitter for a low-power double-data rate (LPDDR) interface can be operated in one of a non-return to zero (NRZ) mode and a pulse amplitude modulation (PAM)-4 mode. The dual-mode transmitter includes: a pseudorandom binary sequence (PRBS) generator configured to generate a transmission signal to be transmitted to a dual-mode receiver; at least one serializer configured to serialize the transmission signal; a single-ended to differential (S2D) configured to convert the serialized transmission signal in a form of a single-ended signal into a differential signal; a ZQ calibration configured to generate a result code for matching an impedance value at an output terminal of the dual-mode transmitter with a terminating resistance value of the dual-mode receiver; and a pre-driver configured to combine the differential signal obtained by the converting and the result code.
    Type: Grant
    Filed: November 28, 2024
    Date of Patent: August 4, 2026
    Assignee: Foundation for Research and Business, Seoul National University of Science and Technology
    Inventors: Won Young Lee, Hangmin Jo
  • DUAL-MODE TRANSMITTER FOR LOW-POWER DOUBLE-DATA RATE (LPDDR)INTERFACE
    Publication number: 20250379717
    Abstract: A dual-mode transmitter for a low-power double-data rate (LPDDR) interface can be operated in one of a non-return to zero (NRZ) mode and a pulse amplitude modulation (PAM)-4 mode. The dual-mode transmitter includes: a pseudorandom binary sequence (PRBS) generator configured to generate a transmission signal to be transmitted to a dual-mode receiver; at least one serializer configured to serialize the transmission signal; a single-ended to differential (S2D) configured to convert the serialized transmission signal in a form of a single-ended signal into a differential signal; a ZQ calibration configured to generate a result code for matching an impedance value at an output terminal of the dual-mode transmitter with a terminating resistance value of the dual-mode receiver; and a pre-driver configured to combine the differential signal obtained by the converting and the result code.
    Type: Application
    Filed: November 28, 2024
    Publication date: December 11, 2025
    Inventors: Won Young Lee, Hangmin JO
  • Method for providing for one-barcode service, and system therefor
    Patent number: 10504134
    Abstract: A method of providing a one-barcode service, and more particularly, to a method of providing a one-barcode service, in which a plurality of pieces of card information are registered using a single barcode, alliance company information in connection with each piece of card information are managed using the single barcode, and an alliance company service is used, and a system therefor.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: December 10, 2019
    Assignee: SK PLANET CO., LTD.
    Inventors: JongSoo Lee, MinSeok Namkoong, YoungWho Hwang, Hangmin Jo, YoungTae Shim
  • METHOD FOR PROVIDING FOR ONE-BARCODE SERVICE, AND SYSTEM THEREFOR
    Publication number: 20160283968
    Abstract: A method of providing a one-barcode service, and more particularly, to a method of providing a one-barcode service, in which a plurality of pieces of card information are registered using a single barcode, alliance company information in connection with each piece of card information are managed using the single barcode, and an alliance company service is used, and a system therefor.
    Type: Application
    Filed: March 22, 2016
    Publication date: September 29, 2016
    Inventors: JongSoo LEE, MinSeok NAMKOONG, YoungWho HWANG, Hangmin JO, YoungTae SHIM