发明名称 |
TRANSCODING AND TRANSDECODING UNIT, AND METHOD FOR ADJUSTING THE OUTPUT THEREOF. |
摘要 |
<p>PCT No. PCT/FI94/00414 Sec. 371 Date May 19, 1995 Sec. 102(e) Date May 19, 1995 PCT Filed Sep. 19, 1994 PCT Pub. No. WO95/08877 PCT Pub. Date Mar. 30, 1995A transcoding and transdecoding unit in a digital mobile radio system, and methods for adjusting their output signals. The unit includes an expander for converting companded digital data into a linear signal; a speech encoder for coding a linearized signal into encoded form; and an amplifier for amplifying the expanded signal. In order that the outbound audio signal not suffer interference due to the raised level, the transcoding unit further includes a level monitor for monitoring the amplitude of the linearized signal and for controlling amplifier such that the signal produced by the amplifier is of a desired level.</p> |
申请公布号 |
EP0670089(A1) |
申请公布日期 |
1995.09.06 |
申请号 |
EP19940926955 |
申请日期 |
1994.09.19 |
申请人 |
NOKIA TELECOMMUNICATIONS OY |
发明人 |
LEPPAENEN, REIJO;VAENSKAE, MARKO |
分类号 |
H03M7/50;H03G7/00;H04B7/005;H04B14/04;H04L25/03;H04W52/52;(IPC1-7):H04B7/005 |
主分类号 |
H03M7/50 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|