Patent ID: 6714912
Filing Date: 2004-03-30
Classification: G10L,H04M

Abstract:
A digital cordless phone system having a base unit and a remote unit, wherein each of the base unit and the remote unit comprising:a first codec for encoding voice data in a first encoding mode and decoding data encoded in the first encoding mode in a first decoding mode; a data processing unit having a second codec for encoding the voice data in a second encoding mode, the data processing unit for adding an error-detection code to encoded data to indicate existence of an error in the encoded data, removing the error-detection code from encoded data received from one of the base unit and the remote unit, performing error concealment with respect to the encoded data from which the error-detection code is removed, and providing error concealed data to the second codec to decode the error concealed data in a second decoding mode; a controller for generating a selection signal for changing an encoding mode of the digital cordless phone system in response to a signal representing strength of a signal received from the base unit or the remote unit; a modem for modulating data output from the first codec or the data processing unit, and demodulating data remotely received from the base unit or the remote unit; and a switch for connecting the first codec or the data processing unit to the modem in response to the selection signal.