发明名称 |
Tuning circuit for high frequency receivers |
摘要 |
A tuning circuit for a high frequency receiver in which the received frequency is determined by a voltage-controlled oscillator, the present tuning frequency is indicated by a counter connected to the oscillator and producing a representation of each digit of the decimal number identifying the current received frequency, representations of the digits of the number identifying the desired received frequency are fed in via a keyboard, and the decimal number representations are compared in a comparator to produce a control voltage that brings the oscillator frequency to the desired value, and in which the comparator is capable of comparing only one digit of the number representations at a time and is associated with multiplex circuitry which supplies the digits of corresponding significance thereto in sequence, starting with the most significant digit.
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申请公布号 |
US4110695(A) |
申请公布日期 |
1978.08.29 |
申请号 |
US19760708754 |
申请日期 |
1976.07.26 |
申请人 |
LICENTIA PATENT-VERWALTUNGS-G.M.B.H. |
发明人 |
KLANK, OTTO;ROTTMANN, DIETER;WUTTKE, STEPHAN |
分类号 |
H04B1/16;H03J1/00;H03J1/04;H03J7/06;(IPC1-7):H04B1/16 |
主分类号 |
H04B1/16 |
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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