New Technology from Lenz Electronics:

Since the advent of using track power to control our model trains, the modeler has had to deal with the chore of track cleaning and poor electrical contact. No more! Lenz GmbH the leader in high performance DCC control is proud to announce USP, its latest technological advance in model railroad control technology. Using decoders with USP, the DCC signal can be received and the model operated even if you cover the track with plastic tape!
Uninterruptable
Signal
Processing
DCC with USP is totally compatible with all existing NMRA DCC systems and requires no changes to your existing wiring or control system. Locomotives and rolling stock equipped with USP act the same as any other decoder equipped models with the exception that poor pickup and dirty track will no longer be an issue to smooth and flawless performance.
In addition since decoders will now be able to receive all DCC packets independent of dirty track or poor electrical pickup, the repetition rate for DCC packets can be reduced which will open up wide new possibilities for DCC operation.
Decoders with the USP technology will first be introduced in O and Large Scale decoders in the summer of 2003 with the gradual adoption into HO and N scale decoders shortly thereafter.
USP technology created by Lenz GmbH is protected by US and European patent applications.