Patents Examined by Pau Ip
  • Patent number: 4876459
    Abstract: An electronic switching system is presented for use by consumers. Inputs are connected to the circuit which detect which input is producing a signal. The circuit then allows that signal to pass through to be reproduced on output speakers. If both of two inputs are "on," producing two signals, the system toggles between the signals thus reproducing a toggling signal at the speakers. The system may also be adapted to accommodate three or more input signals which would then produce either one output if only one is "on" or a toggling output between those inputs that are "on.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: October 24, 1989
    Inventor: Thomas P. Fiock