×

Multiple vocoder mobile satellite telephone system

  • US 6,418,147 B1
  • Filed: 01/21/1998
  • Issued: 07/09/2002
  • Est. Priority Date: 01/21/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. A communications system comprising:

  • a first unit having a first transceiver coupled to a first controller, said first unit further comprising a plurality of encoders for encoding speech signals and a first switching unit being responsive to a first selection signal for enabling one of said encoders for operation at any given time; and

    a second unit having a second transceiver coupled to a second controller, said second unit further comprising a plurality of decoders for decoding encoded speech signals received from said first unit and a second switching unit being responsive to a second selection signal for enabling one of said decoders that corresponds to an enabled one of said encoders for operation at any given time, said first and second units transmitting and receiving encoded speech signals and also signalling information therebetween over an RF communication link, the signalling information including a selection signal command that is derived based on at least one criterion, wherein the at least one criterion is based on a predicted communications system load.

View all claims
  • 8 Assignments
Timeline View
Assignment View
    ×
    ×