发明名称 |
Scrambling and descrambling circuit for a cordless telephone |
摘要 |
A scrambling and a descrambling circuit for cordless telephone provides a higher security level than current phone scrambling circuitry. The higher security level is accomplished by separating an audio signal into low and high frequency bands. The frequency bands are selectively inverted or non-inverted during scrambling and descrambling according to common selection conditions. The processed signals are mixed into an overall mixed signal. The overall mixed signal is selectively inverted or non-inverted during scrambling and descrambling according to a common selection condition to increase the phone's transmission security level.
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申请公布号 |
US5991416(A) |
申请公布日期 |
1999.11.23 |
申请号 |
US19960733956 |
申请日期 |
1996.10.21 |
申请人 |
SAMSUNG ELECTRONICS, CO. LTD. |
发明人 |
BAE, YL-SUNG |
分类号 |
H04B7/26;H04K1/04;(IPC1-7):H04K1/04;H04B1/10;H04Q7/24;H04Q7/32 |
主分类号 |
H04B7/26 |
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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