JPS5952764U - push button dial - Google Patents
push button dialInfo
- Publication number
- JPS5952764U JPS5952764U JP12615983U JP12615983U JPS5952764U JP S5952764 U JPS5952764 U JP S5952764U JP 12615983 U JP12615983 U JP 12615983U JP 12615983 U JP12615983 U JP 12615983U JP S5952764 U JPS5952764 U JP S5952764U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- group
- low
- push button
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
第１図はこの考案の一実施例を示す押し釦ダイヤルのブ
吊ツク構成図、第２図はキー入力回路を示す図、第３図
ａ、 ｂはスイッチ付加回路の一例を示すブロック図
およびその入出力波形図、第４図は近似正弦波発生回路
のＺイムチャートである。
図中、１はキースイッチ、２は基準クロック発生回路、
３はキー入力回路、４はスイッチ付加回路、５は周波数
選択回路、６はキーデコーダ、７はプログラマブルカウ
ンタ、８は近似正弦波発生回路、９は１４進カウンタ、
１０はデコーダ、１１はＲＯＭおよびＤＡコンバータ、
１２はミキサ、１３はローパスフィルタおよび出力回路
、１４は出力抵抗器、１．５は定電圧回路である。
会−ｍ−ｔ−１１
１＝−ｃｌ、 −−−
１
第３図 Ｌ４Fig. 1 is a block diagram of a push button dial showing an embodiment of this invention, Fig. 2 is a diagram showing a key input circuit, and Figs. 3 a and b are block diagrams showing an example of a switch addition circuit. The input/output waveform diagram, FIG. 4, is a Z-im chart of the approximate sine wave generating circuit. In the figure, 1 is a key switch, 2 is a reference clock generation circuit,
3 is a key input circuit, 4 is a switch addition circuit, 5 is a frequency selection circuit, 6 is a key decoder, 7 is a programmable counter, 8 is an approximate sine wave generation circuit, 9 is a hexadecimal counter,
10 is a decoder, 11 is a ROM and a DA converter,
12 is a mixer, 13 is a low-pass filter and output circuit, 14 is an output resistor, and 1.5 is a constant voltage circuit. Meeting-m-t-11 1=-cl, --- 1 Figure 3 L4
Claims (1)
と、基準クロック発、主回路と、前記キースイッチによ
り低群と高群の１つが選択されるキー入力回路と、この
キー入力回路の出力のチャツタリングを除去するスイッ
チ付加回路と、前記選択された低群および高群の１つに
それぞれ対応した正弦波信号の周波数のｎ倍のパルスを
出力する周波数選択回路と、前記ｎ倍のパルスをｌ／ｎ
にして前記低群および高群の信号に近似した正弦波を作
る近似正弦波発生回路と、前記低群と高群の信号を混合
するミキサ回蕗とからなる押し釦発振回路部と、前記ミ
キサ回路の出力の高周波分を除去するローパスフィルタ
とを含んでなる出力回路と、この出力回路に積み積み重
ねるように接続され前記出力回路の出力レベルを一定に
するとともに前記押し釦発振回路部の各回路へ駆動電源
を供給する定電圧回路とから構成されたことを特徴とす
る押し釦ダイヤル。A key switch having a frequency switch with a make contact configuration, a reference clock generator, a main circuit, a key input circuit in which one of the low group and high group is selected by the key switch, and chattering in the output of this key input circuit is eliminated. a frequency selection circuit that outputs a pulse n times the frequency of the sine wave signal corresponding to one of the selected low group and high group, respectively;
an approximate sine wave generation circuit that generates a sine wave that approximates the low group and high group signals; and a mixer circuit that mixes the low group and high group signals; an output circuit including a low-pass filter that removes high-frequency components of the output of the circuit; and each circuit of the push button oscillation circuit section connected to the output circuit in a stacked manner to maintain a constant output level of the output circuit. and a constant voltage circuit that supplies driving power to the push button dial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12615983U JPS5952764U (en) | 1983-08-16 | 1983-08-16 | push button dial |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12615983U JPS5952764U (en) | 1983-08-16 | 1983-08-16 | push button dial |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5952764U true JPS5952764U (en) | 1984-04-06 |
| JPS6214773Y2 JPS6214773Y2 (en) | 1987-04-15 |
Family
ID=30286971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12615983U Granted JPS5952764U (en) | 1983-08-16 | 1983-08-16 | push button dial |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5952764U (en) |
-
1983
- 1983-08-16 JP JP12615983U patent/JPS5952764U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6214773Y2 (en) | 1987-04-15 |
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