JPH0284448U - - Google Patents
Info
- Publication number
- JPH0284448U JPH0284448U JP16299788U JP16299788U JPH0284448U JP H0284448 U JPH0284448 U JP H0284448U JP 16299788 U JP16299788 U JP 16299788U JP 16299788 U JP16299788 U JP 16299788U JP H0284448 U JPH0284448 U JP H0284448U
- Authority
- JP
- Japan
- Prior art keywords
- cordless
- base unit
- control signal
- transmitting
- receiving 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
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000008054 signal transmission Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Mobile Radio Communication Systems (AREA)
Description
第１図は本考案の実施例を示すブロツク図、第
２図は従来例を示すブロツク図である。
１，２１……アンテナ、２，２２……マルチプ
レクサ、３，２３……無線受信回路、４，２４…
…無線送信回路、５，２５……増幅器、６，２６
……ミキサアンプ、７，８……ミユート回路、９
……モデム、１０，３１……制御回路、１１，３
２……受話音声回路、１２，３３……送話音声回
路、２７，２８……高域通過フイルタ、２９……
低域通過フイルタ、３０……制御信号デイテクタ
。
FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional example. 1, 21... Antenna, 2, 22... Multiplexer, 3, 23... Wireless receiving circuit, 4, 24...
...Radio transmission circuit, 5, 25...Amplifier, 6, 26
...Mixer amplifier, 7, 8...Mute circuit, 9
...Modem, 10,31...Control circuit, 11,3
2... Receiving audio circuit, 12, 33... Transmitting audio circuit, 27, 28... High pass filter, 29...
Low-pass filter, 30...control signal detector.
Claims (1)
信号と制御信号が同一の無線チヤネルにより送受
信されるコードレスホンにおいて、コードレス親
機及びコードレス子機から送信されるキー情報等
の制御信号の伝送速度を３００ｂｐｓ以下にする
とともに、コードレス親機とコードレス子機の送
受話音声回路に上記制御信号の通過を阻止する高
域通過フイルタを挿入し、制御信号が送受話音声
回路に混入するのを防止したことを特徴とするコ
ードレスホンの制御信号伝送回路。 In a cordless phone where call signals and control signals are transmitted and received between the cordless base unit and the cordless handset over the same wireless channel, the transmission speed of control signals such as key information sent from the cordless base unit and cordless handset is set to 300 bps. In addition to the following, we have inserted a high-pass filter that blocks the passage of the control signal into the transmitting/receiving audio circuits of the cordless base unit and cordless handset to prevent the control signal from entering the transmitting/receiving audio circuit. Features a control signal transmission circuit for cordless phones.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16299788U JPH0284448U (en) | 1988-12-15 | 1988-12-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16299788U JPH0284448U (en) | 1988-12-15 | 1988-12-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0284448U true JPH0284448U (en) | 1990-06-29 |
Family
ID=31447327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16299788U Pending JPH0284448U (en) | 1988-12-15 | 1988-12-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0284448U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5970032A (en) * | 1982-10-13 | 1984-04-20 | Sanyo Electric Co Ltd | Cordless telephone set |
-
1988
- 1988-12-15 JP JP16299788U patent/JPH0284448U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5970032A (en) * | 1982-10-13 | 1984-04-20 | Sanyo Electric Co Ltd | Cordless telephone set |
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