JPS6444737U - - Google Patents
Info
- Publication number
- JPS6444737U JPS6444737U JP13869687U JP13869687U JPS6444737U JP S6444737 U JPS6444737 U JP S6444737U JP 13869687 U JP13869687 U JP 13869687U JP 13869687 U JP13869687 U JP 13869687U JP S6444737 U JPS6444737 U JP S6444737U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- transmitter
- telephone
- input
- audio
- 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
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000005236 sound signal Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Description
第1図はこの考案の一実施例の概略ブロツク図
である。
図において、1は送話器、2はスイツチング回
路、3は帯域増幅回路、4は整流・直流増幅回路
を示す。
FIG. 1 is a schematic block diagram of an embodiment of this invention. In the figure, 1 is a transmitter, 2 is a switching circuit, 3 is a band amplification circuit, and 4 is a rectification/DC amplification circuit.
Claims (1)
するようにした電話機の音声入力制御回路であつ
て、 前記送話器の出力信号のうち、所定の帯域幅の
音声信号を帯域増幅する帯域増幅回路と、 前記帯域増幅回路の出力を整流して直流化し、
その直流信号を増幅する整流・直流増幅回路と、 前記整流・直流増幅回路の出力レベルが予め定
めるレベル以下のとき、前記送話器から出力され
た音声入力信号が前記電話機本体へ入力されるの
を遮断し、前記整流・直流増幅回路の出力レベル
が予め定めるレベル以上のとき、前記送話器から
出力された音声入力信号が前記電話機本体へ入力
されるのを許容するスイツチング回路とを備えた
、電話機の音声入力制御回路。[Scope of Claim for Utility Model Registration] An audio input control circuit for a telephone that limits audio input to a transmitter when transmission is stopped, the circuit comprising: a band amplification circuit that band-amplifies an audio signal with a width of
a rectifying/DC amplifying circuit that amplifies the direct current signal; and when the output level of the rectifying/DC amplifying circuit is below a predetermined level, the audio input signal output from the transmitter is input to the telephone main body. and a switching circuit that allows the voice input signal output from the transmitter to be input to the telephone main body when the output level of the rectifier/DC amplifier circuit is equal to or higher than a predetermined level. , telephone voice input control circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13869687U JPS6444737U (en) | 1987-09-10 | 1987-09-10 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13869687U JPS6444737U (en) | 1987-09-10 | 1987-09-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6444737U true JPS6444737U (en) | 1989-03-17 |
Family
ID=31401274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13869687U Pending JPS6444737U (en) | 1987-09-10 | 1987-09-10 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6444737U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04109419U (en) * | 1991-03-05 | 1992-09-22 | ナイルス部品株式会社 | fan motor control device |
-
1987
- 1987-09-10 JP JP13869687U patent/JPS6444737U/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04109419U (en) * | 1991-03-05 | 1992-09-22 | ナイルス部品株式会社 | fan motor control device |
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