Title:
DIGITAL MODEM AND DIGITAL MODULATING-DEMODULATING METHOD
Document Type and Number:
Japanese Patent JP2005136663
Kind Code:
A
Abstract:
To provide a digital modem which simply converts a ping-pong system to an echo canceller system at a low cost about the space and power savings, non-adjustment, etc.
The digital modem for transmitting in the ping-pong system has a means for phasing an output signal in an echo canceller system with the input phase of the ping-pong system or an output signal in the ping-pong system with the input phase of the echo canceller system and for matching the signal forms to connect them.
Inventors:
AOKI IKUNORI
Application Number:
JP2003370008A
Publication Date:
May 26, 2005
Filing Date:
October 30, 2003
Export Citation:
Assignee:
NEC ACCESS TECHNICA LTD
International Classes:
H04L29/06; H04L29/00; H04M11/00; (IPC1-7): H04L29/06; H04L29/00; H04M11/00
Attorney, Agent or Firm:
Takao Maruyama
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