Patents by Inventor Sang-Joo Ra

Sang-Joo Ra 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).

  • Single-chip data processing apparatus incorporating an electrically rewritable nonvolatile memory and method of operating the same
    Patent number: 6839774
    Abstract: A microcontroller includes an electrically erasable and programmable nonvolatile memory and a memory controller for controlling the nonvolatile memory. Upon writing a control program for the microcontroller and data into the nonvolatile memory pursuant to an externally provided NVM command or an internally issued program command, a CPU of the microcontroller does not intervene in controlling the nonvolatile memory. Particularly, in a programming mode set by the external program command, CPU, buses, and communication interfaces of the microcontroller are deactivated. Further, the memory controller receives a NVM command, an address and data from outside of the microcontroller for controlling an operation of the nonvolatile memory based on the NVM command and the address without intervention of the CPU.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: January 4, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-Keun Ahn, Bum-Seok Yu, Sang-Joo Ra, Jong-In Kim