公开(公告)号：US3875340A

公开(公告)日：1975-04-01

申请号：US37616973

申请日：1973-07-03

Applicant: CIT ALCATEL

Inventor： ROY MARIE-ANNICK ,  CABET ALAIN ,  DESOMBRE PATRICE

IPC: H04J1/04 ,  H04J1/05

CPC classification number: H04J1/04 ,  H04J1/05

Abstract: Digital system which, from n voice frequency channels, furnishes a band of a frequency multiplex system, for example, a primary base group of twelve channels of 4 kHz each, covering the band 60 - 108 kHz, and comprises between an analog-digital input converter receiving the voice frequency channels and a digitalanalog output converter emitting the desired band, only members of the digital type operating on digital information or data ''''words.

Abstract translation: 数字系统，其从n个语音频道通道提供频率复用系统的频带，例如，每个具有4kHz的12个信道的主基组，覆盖频带60-108kHz，并且包括在模拟数字输入 接收语音频道的转换器和发射所需频带的数字模拟输出转换器，只有在数字信息或数据“字上操作的数字类型的成员。