JPS59157354U

JPS59157354U - Tone generation circuit of selection signal calling device

Info

Publication number: JPS59157354U
Application number: JP1983050435U
Authority: JP
Inventors: 正一吉田
Original assignee: 日本無線株式会社
Priority date: 1983-04-05
Filing date: 1983-04-05
Publication date: 1984-10-22
Also published as: JPS6340930Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案の基本的実施例を示すブ葡ツク回路図、
第２図はその具体例、第３図、第４図は第２図の切替制
御回路のタイムチャート、第５図は第２図の周波数分周
回路の分周数を表にしたもの°、第６図、第７図は第２
図の信号出力のタイムチャートを示す。第８図は他の実
施例のブロック図である。１．１１，１２．１３・・・信号発生回路、２゜２１．
２２・・・プログラマブル分周回路、３・・・プログラ
マブル帯域フィルタ回路、４・・・切替制御回路、５・
・・選択回路。クリ％−□□−−− ９０９４戸す企−一■−ｎ−」Ｌ」１ｒＱｌ　　−２（：「Ｑｌ ’Ｆ　　　　ｒ＞９ィ吉：１４已そ一一一」□□□ ＼ＥＥＥじヘシ１１／＋ｙ亀ｙFIG. 1 is a book circuit diagram showing a basic embodiment of the present invention.
FIG. 2 is a specific example, FIGS. 3 and 4 are time charts of the switching control circuit of FIG. 2, and FIG. 5 is a table showing the frequency division number of the frequency dividing circuit of FIG. 2. Figures 6 and 7 are
A time chart of the signal output shown in the figure is shown. FIG. 8 is a block diagram of another embodiment. 1.11, 12.13... Signal generation circuit, 2゜21.
22... Programmable frequency divider circuit, 3... Programmable bandpass filter circuit, 4... Switching control circuit, 5...
...Selection circuit. Cri%−□□−−− 9094 households plan−1 ■−n−”L”1 rQl −2(: “Ql 'F r>9 Heshi 11/+y turtle y

Claims

[Scope of utility model registration request]

(1) At least one signal generation circuit that outputs a reference frequency with a constant period, and at least one programmable frequency division circuit that can divide the reference frequency from the signal generation circuit by a desired frequency division number. , at least one programmable bandpass filter circuit capable of modulating the frequency divided by the programmable frequency dividing circuit with furnace liquid characteristics corresponding to the divided frequency, and an operation of the signal generating circuit; A selection signal calling device characterized by comprising a switching control circuit that switches the desired frequency division number and the filtering characteristic and controls the tone signal of the required frequency to be sequentially output in series while converting it into a sine wave. tone generation circuit.

(2) In the circuit set forth in paragraph 1 of the claims for utility model registration,
The signal generation circuit and the programmable bandpass filter circuit are single, and a plurality of programmable frequency division circuits each having a different frequency division number are provided, and a reference frequency of a constant period from the signal generation circuit is applied to the switching circuit. Under the control of the control circuit, the plurality of programmable frequency dividers -
A tone generating circuit for a selection signal calling device, characterized in that the tone generating circuit is connected to any one of the circuits.