Patent ID: RE41292

Claim:
A modular digital recording logger , comprising: a housing; at least two circuit modules audio circuits in said housing for converting analog voice signals to digital voice signals, each of said circuit modules audio circuits including at least two terminals for receiving said analog voice signals, each of said terminals being capable of receiving said analog voice signals for recording a two-way conversation; a circuit in said housing for compressing said digital voice signals received from each of said circuit modules audio circuits to provide compressed voice data; a first bus in said housing for providing communication between said circuit module audio circuits and said compressing circuit , said first bus enabling the addition or removal of circuits ; a multiplexer circuit in said housing for providing communication between said compressing circuit and said first bus, wherein said multiplexer circuit multiplexes voice signals exchanged between said compressing circuit and said circuit modules audio circuits on said first bus; and a host computer for controlling the logger; and a digital audio tape (DAT) drive for storing said compressed voice data.