Patents by Inventor Je I. Back

Je I. Back 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).

  • Patent number: 5091904
    Abstract: Universal signaling service unit for providing such signal that required to connection and progress of calling in time-division electronic switching system. The invention, in constitution that TSU, TSP, ASTU, ASIP, DTIU, DTIP, FIU, FIP, USTU, LSIP, IPCB, ASP are made to cooperate together, is organized such that: PCM signal data are transmitted and received by the control via telephony device-bus TD-bus, fault status is informed via alarm bus, various service functions requiring real time process are commonized to make one universal signaling tranceiver assembly USTA, signaling service function in USTA is divided into signal tone transmitting and receiving mode service group, and standby mode service group, and USTU is divided into USTU .0. and USTU 1; wherein USTA block is organized with TD-bus interface block, control block, sending block, receiving block, SHW interface block, and messages of FIGS.
    Type: Grant
    Filed: January 24, 1990
    Date of Patent: February 25, 1992
    Assignee: Korea Electronics and Telecommunications
    Inventors: Je I. Back, Deok H. Kim, Hyun H. Hong, Mun G. Kyong, Ju Y. Park, Hyeong H. Lee, Young K. Lee, Hang G. Park