JPH03103656U - - Google Patents
Info
- Publication number
- JPH03103656U JPH03103656U JP1023390U JP1023390U JPH03103656U JP H03103656 U JPH03103656 U JP H03103656U JP 1023390 U JP1023390 U JP 1023390U JP 1023390 U JP1023390 U JP 1023390U JP H03103656 U JPH03103656 U JP H03103656U
- Authority
- JP
- Japan
- Prior art keywords
- detection
- display
- counter
- timekeeping
- period
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims 5
- 238000005259 measurement Methods 0.000 claims 1
- 238000003708 edge detection Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Landscapes
- Telephone Set Structure (AREA)
Description
第１図は本考案の１実施例の構成を示すブロツ
ク図。第２図は本考案の１実施例を適用した電話
機の外観図。第３図は本考案の作用の説明に供す
るタイミング図。
３０……呼出し期間計数表示回路、３１……リ
トリガブル単安定マルチバイブレータ、３２……
立上りエツジ検出回路、３３……立ち下がりエツ
ジ検出回路、３４……計数回路、３５……表示制
御回路、３６……表示器。
FIG. 1 is a block diagram showing the configuration of one embodiment of the present invention. FIG. 2 is an external view of a telephone to which one embodiment of the present invention is applied. FIG. 3 is a timing chart for explaining the operation of the present invention. 30... Ringing period counting display circuit, 31... Retriggerable monostable multivibrator, 32...
Rising edge detection circuit, 33...Falling edge detection circuit, 34...Counting circuit, 35...Display control circuit, 36...Display device.
Claims (1)
と、検出手段の検出出力発生期間中計時をする計
時手段と、計時手段の計時内容に対応した表示を
する表示手段とを備えたことを特徴とする電話機
。 (2) 計時手段は検出手段の検出出力発生期間中
呼出し信号パルスを計数するカウンタとし、かつ
表示手段はカウンタの計数値を表示する表示器と
したことを特徴とする請求項１記載の電話機。[Scope of Claim for Utility Model Registration] (1) Detection means for detecting the generation period of a calling signal, timekeeping means for keeping time during the detection output generation period of the detection means, and a display corresponding to the time measurement content of the timekeeping means A telephone characterized by comprising means. (2) The telephone set according to claim 1, wherein the time counting means is a counter that counts the ringing signal pulses during the period when the detection output is generated by the detection means, and the display means is a display that displays the counted value of the counter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1023390U JPH03103656U (en) | 1990-02-06 | 1990-02-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1023390U JPH03103656U (en) | 1990-02-06 | 1990-02-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03103656U true JPH03103656U (en) | 1991-10-28 |
Family
ID=31513818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1023390U Pending JPH03103656U (en) | 1990-02-06 | 1990-02-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03103656U (en) |
-
1990
- 1990-02-06 JP JP1023390U patent/JPH03103656U/ja active Pending
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