Patents by Inventor Heung-Suck Kim

Heung-Suck Kim 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).

  • Analog-to-digital converter with all parallel BiCMOS
    Patent number: 4968990
    Abstract: An analog-to-digital converter with all parallel BiCMOSs are provided. Comparators each composed of a plurality of bipolar transistors are included for comparing an analog signal with a reference voltage. A transfer circuit comprising a plurality of CMOS transistors are provided for transferring an output from the comparators to a corresponding input mode. A plurality of first ROMs and a second ROM, each of which is composed of a plurality of CMOS transistors, provide outputs of digital signals coded by the transfer means.
    Type: Grant
    Filed: February 15, 1989
    Date of Patent: November 6, 1990
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Heung-Suck Kim
  • Comparator unit for a flash analog-to-digital converter
    Patent number: 4910518
    Abstract: A high speed comparator unit for a flash A/D converter in which a bank of comparator units compare simultaneously an analog input voltage with equally spaced reference voltages, and an encoder ROM produces digital signals based on the comparator unit's outputs. The comparator unit includes a two-stage cascode configuration and a level shifter configuration which effectively reduces the miller-effect of the comparator unit.
    Type: Grant
    Filed: July 14, 1988
    Date of Patent: March 20, 1990
    Assignee: Samsun Semiconductor and Telecommunications Co., Ltd.
    Inventors: Heung-Suck Kim, Chan-Kyu Myung