发明名称 |
Digital frequency sender |
摘要 |
A digital frequency sender comprises a generator which supplies multi-frequency codes by cyclically scanning a table under the control of a time base (BT). The sender comprises a logarithmic generator (GL) which delivers single-frequency signals, a logarithmic adder (AL) which sums two single-frequency signals in compressed form, and a frequency output unit (DF) controlled by a computer (CAL). The invention is particularly applicable to time division telecommunication exchange division.
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申请公布号 |
US4390983(A) |
申请公布日期 |
1983.06.28 |
申请号 |
US19810235818 |
申请日期 |
1981.02.19 |
申请人 |
COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT-ALCATEL |
发明人 |
DUPLESSIS, PHILIPPE;DELPIT, PHILIPPE |
分类号 |
H04Q1/45;H04Q1/457;H04Q11/04;(IPC1-7):H03K13/18;H04J3/12 |
主分类号 |
H04Q1/45 |
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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