JPH0322439U - - Google Patents
Info
- Publication number
- JPH0322439U JPH0322439U JP8334989U JP8334989U JPH0322439U JP H0322439 U JPH0322439 U JP H0322439U JP 8334989 U JP8334989 U JP 8334989U JP 8334989 U JP8334989 U JP 8334989U JP H0322439 U JPH0322439 U JP H0322439U
- Authority
- JP
- Japan
- Prior art keywords
- transmission line
- noise
- attenuating
- audio signal
- data pulse
- 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
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000005236 sound signal Effects 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 1
- 230000000630 rising effect Effects 0.000 claims 1
- 230000008054 signal transmission Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000004069 differentiation Effects 0.000 description 1
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Noise Elimination (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Mobile Radio Communication Systems (AREA)
Description
第１図は本考案の一実施例の自動車電話機１の
電気的構成を示すブロツク図、第２図はノイズ除
去動作を説明するための波形図である。
１……自動車電話機、２……ハンドセツト、３
……置台部、４……送話器、１０，１８……遅延
回路、２０……受話器、３２，３５……処理回路
、４１，４６……微分回路、４２，４７……絶対
値回路、４３，４８……時定数回路、４４，４９
……比較回路、４５，５０……減衰スイツチ、ｌ
１〜ｌ４……伝送線。
FIG. 1 is a block diagram showing the electrical configuration of a mobile phone 1 according to an embodiment of the present invention, and FIG. 2 is a waveform diagram for explaining the noise removal operation. 1...Car phone, 2...Handset, 3
... Stand part, 4 ... Transmitter, 10, 18 ... Delay circuit, 20 ... Telephone receiver, 32, 35 ... Processing circuit, 41, 46 ... Differentiation circuit, 42, 47 ... Absolute value circuit, 43, 48...Time constant circuit, 44, 49
... Comparison circuit, 45, 50 ... Attenuation switch, l
1 to l4...transmission line.
Claims (1)
隣接して配設した信号伝送回路において、 前記データパルスの立上りまたは立下りによる
ノイズ発生を検出するノイズ検出手段と、 ノイズ検出手段の出力に応答して、前記音声信
号を減衰する減衰手段とを含むことを特徴とする
信号伝送回路。[Scope of Claim for Utility Model Registration] In a signal transmission circuit in which an audio signal transmission line and a data pulse transmission line are disposed adjacent to each other, noise detection means for detecting noise generation due to the rising or falling edge of the data pulse; . Attenuating means for attenuating the audio signal in response to the output of the noise detecting means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8334989U JPH0744107Y2 (en) | 1989-07-15 | 1989-07-15 | Signal transmission circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8334989U JPH0744107Y2 (en) | 1989-07-15 | 1989-07-15 | Signal transmission circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0322439U true JPH0322439U (en) | 1991-03-07 |
| JPH0744107Y2 JPH0744107Y2 (en) | 1995-10-09 |
Family
ID=31630943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8334989U Expired - Lifetime JPH0744107Y2 (en) | 1989-07-15 | 1989-07-15 | Signal transmission circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0744107Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4659030B2 (en) * | 2005-05-26 | 2011-03-30 | ビーエルデーオリエンタル株式会社 | Bowling game system |
-
1989
- 1989-07-15 JP JP8334989U patent/JPH0744107Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4659030B2 (en) * | 2005-05-26 | 2011-03-30 | ビーエルデーオリエンタル株式会社 | Bowling game system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0744107Y2 (en) | 1995-10-09 |
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