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HOSPITAL COMMUNICATION SYSTEM

  • US 3,872,440 A
  • Filed: 07/10/1974
  • Issued: 03/18/1975
  • Est. Priority Date: 05/16/1972
  • Status: Expired due to Term
First Claim
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1. Communication system for hospitals and the like, said system transmitting communications signals between sub-units of room units and a central station over a common high-frequency line, each of said room units having a characteristic frequency assigned thereto which serves both as a room unit address signal and a carrier for the address signals of the sub-units, said system including:

  • a receiving device coupled to said high-frequency line for receiving communicatIons signals from said room units; and

    means said receiving device to the respective characteristic frequencies assigned to said room units in timed sequence.

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