×

Adaptive expansion table in a digital telephone receiver

  • US 6,111,935 A
  • Filed: 06/02/1997
  • Issued: 08/29/2000
  • Est. Priority Date: 10/27/1993
  • Status: Expired due to Fees
First Claim
Patent Images

1. A digital telephone apparatus comprising:

  • an adaptive expansion table having as an input a first digital signal comprising n bits and having as an output a second digital signal comprising m bits, where m is greater than n, such that the second digital signal has a resolution that is finer than the resolution of the first digital signal, said adaptive expansion table mapping each of 2n possible input values of the first digital signal to a selected output value comprising m bits, said adaptive expansion table also being configurable to comprise one of a plurality of differing compression maps; and

    coupled to the adaptive expansion table, a controller adapted to change the configuration of the adaptive expansion table.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×