发明名称 |
Transmission of digital wideband signals |
摘要 |
<p>The transmission system comprises a transmitter for transmitting a subband encoded signal accommodated in a second digital signal (Fig. 2) comprising frames which include allocation information, scale factor information and samples. In the transmitter the bit allocation information is selectively subjected to a signal processing step and in the receiver the received bit allocation information is selectively subjected to an inverse signal processing step. The signal processing step for the transmitter may be an aselective modulation (scrambling) of the allocation information in the second digital signal. Another possibility is that the sequence of the bit allocation information is changed. In the first case the receiver comprises a demodulator by means of which the modulated allocation information is demodulated (scrambled) in a manner inverse to the modulation in the transmitter. In the second case the sequence of the received bit allocation information is changed in a manner inverse to the change of sequence during recording. <IMAGE></p> |
申请公布号 |
EP0554934(B1) |
申请公布日期 |
2001.11.21 |
申请号 |
EP19930200180 |
申请日期 |
1993.01.26 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
DEWOLF, JAN;LOKHOFF, GERARDUS CORNELIS PETRUS;HOOGENDOORN, ABRAHAM |
分类号 |
H04B1/66;H04L9/18;(IPC1-7):H04B1/66;H04L9/00 |
主分类号 |
H04B1/66 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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