US PATENT SUBCLASS 455 / 72
.~.~.~ For compression and expansion of message signal (i.e., companding)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


455 /   HD   TELECOMMUNICATIONS

39  DF  TRANSMITTER AND RECEIVER AT SEPARATE STATIONS {14}
68  DF  .~ With control signal {2}
70  DF  .~.~ Receiver control signal originates at message transmitter {2}
72.~.~.~ For compression and expansion of message signal (i.e., companding)

DEFINITION

Classification: 455/72

For compression and expansion of message signal (i.e., companding):

(under subclass 70) Subject matter wherein the range of variation of the modulating parameter is decreased at the transmitter and expanded in the complementary manner in the receiver.

SEE OR SEARCH CLASS

333, Wave Transmission Lines and Networks,

14, for companding systems, per se.