JPH03208442A - Cordless telephone set - Google Patents
Cordless telephone setInfo
- Publication number
- JPH03208442A JPH03208442A JP300890A JP300890A JPH03208442A JP H03208442 A JPH03208442 A JP H03208442A JP 300890 A JP300890 A JP 300890A JP 300890 A JP300890 A JP 300890A JP H03208442 A JPH03208442 A JP H03208442A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- modulation
- signal
- voice
- averaging
- 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
- 238000012935 Averaging Methods 0.000 claims abstract description 11
- 230000005236 sound signal Effects 0.000 claims description 24
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 230000003321 amplification Effects 0.000 description 5
- 238000003199 nucleic acid amplification method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Amplitude Modulation (AREA)
- Transmitters (AREA)
Abstract
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、コードレス電話装置に関する。[Detailed description of the invention] Industrial applications The present invention relates to cordless telephone devices.
従来の技術
第２図は、従来のコードレス電話装置の送信部の構成を
示し、この送信部は、例えば基地局と移動局にそれぞれ
設けられる。BACKGROUND OF THE INVENTION FIG. 2 shows the configuration of a transmitter of a conventional cordless telephone device, and the transmitter is provided in, for example, a base station and a mobile station, respectively.
第２図において、音声が音声入力回路１に人力すると、
その音声信号が音声信号増幅回路２により一定レベルに
増幅される。次いで、この音声信号は、変調回路３によ
り所定の変調度で変調され、送信回路４により高周波信
号に変換等され、送信波となる。In FIG. 2, when a voice is input manually to the voice input circuit 1,
The audio signal is amplified to a certain level by the audio signal amplification circuit 2. Next, this audio signal is modulated by a modulation circuit 3 with a predetermined modulation degree, and converted into a high frequency signal by a transmission circuit 4, thereby becoming a transmission wave.
したがって、上記従来例によれば、音声信号を所定の変
調度で変調することにより音声信号を送信することがで
きる。Therefore, according to the above conventional example, the audio signal can be transmitted by modulating the audio signal with a predetermined modulation degree.
発明が解決しようとする課題
しかしながら、上記従来のコードレス電話装置では、送
信波の標準変調度を決定すると、変調回路３の標準入力
レベルが一義的に決定されることになり、したがって、
音声入力回路１の入力レベルを平均レベルに想定するこ
とになるので、個人差により変調信号が異なるという問
題点がある。Problems to be Solved by the Invention However, in the conventional cordless telephone device described above, when the standard modulation degree of the transmitted wave is determined, the standard input level of the modulation circuit 3 is uniquely determined.
Since the input level of the audio input circuit 1 is assumed to be an average level, there is a problem that the modulation signal varies depending on individual differences.
本発明は上記従来の問題点を解決するものであり、個人
差にかかわらず常に一定の変調信号を得ることができる
コードレス電話装置を提供することを目的とする。The present invention solves the above conventional problems, and aims to provide a cordless telephone device that can always obtain a constant modulated signal regardless of individual differences.
課題を解決するための手段
本発明は上記目的を達成するために、音声信号を可変の
変調度で変調する変調回路と、音声信号のレベルを平均
化する回路を設け、この平均化された信号により、変調
回路の変調度が適性になるようにしたものである。Means for Solving the Problems In order to achieve the above object, the present invention is provided with a modulation circuit that modulates an audio signal with a variable modulation degree and a circuit that averages the level of the audio signal. This allows the modulation degree of the modulation circuit to be appropriate.
作用
本発明は上記構成により、音声信号が平均化された信号
により、変調回路の変調度が適性になるようにしたので
、入力音声信号の大きさにかかわらず一定の変調信号を
得ることができ、したがって、個人差にかかわらず常に
一定の変調信号を得ることができる。Effect of the Invention With the above configuration, the present invention allows the modulation degree of the modulation circuit to be appropriate using a signal obtained by averaging the audio signal, so that a constant modulation signal can be obtained regardless of the magnitude of the input audio signal. , Therefore, a constant modulation signal can always be obtained regardless of individual differences.
実施例
以下、図面を参照して本発明の詳細な説明する。第１図
は、本発明に係るコードレス電話装置の一実施例を示す
ブロック図である。EXAMPLES Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a cordless telephone device according to the present invention.
第１図において、１１は、基地局の局線回路や移動局の
マイクロホンのように音声が入力する音声入力回路、１
２は、音声入力回路１１からの音声信号を増幅する音声
信号増幅回路、１３は、音声信号増幅回路１２により増
幅された音声信号のレベルを平均化する平均化回路、１
４は、変調回路１６の変調度を制御する変調度可変回路
であり、変調回路１６は、音声入力回路１１からの音声
信号を可変の変調度で変調する。In FIG. 1, reference numeral 11 denotes an audio input circuit into which audio is input, such as a station line circuit of a base station or a microphone of a mobile station;
2 is an audio signal amplification circuit that amplifies the audio signal from the audio input circuit 11; 13 is an averaging circuit that averages the level of the audio signal amplified by the audio signal amplification circuit 12;
4 is a modulation degree variable circuit that controls the modulation degree of the modulation circuit 16, and the modulation circuit 16 modulates the audio signal from the audio input circuit 11 with a variable modulation degree.
１５は、平均化回路１３により平均化された音声信号の
レベルにより、後述するように変調度可変回路１４を制
御する判定回路、１７は、変調回路１６により変調され
た信号を高周波信号に変換等し、基地局や移動局に送信
するための送信回路である。15 is a determination circuit that controls the modulation degree variable circuit 14 as described later based on the level of the audio signal averaged by the averaging circuit 13; 17 is a circuit that converts the signal modulated by the modulation circuit 16 into a high-frequency signal, etc. This is a transmitting circuit for transmitting data to base stations and mobile stations.
次に、上記実施例の動作を説明する。Next, the operation of the above embodiment will be explained.
第１図において、音声が音声入力回路１１に入力すると
、その音声信号が音声信号増幅回路１２により増幅され
、次いで平均化回路１３により平均化される。In FIG. 1, when audio is input to the audio input circuit 11, the audio signal is amplified by the audio signal amplification circuit 12, and then averaged by the averaging circuit 13.
判定回路１５は、平均化回路１３により平均化された音
声信号のレベルにより、変調回路１６が適性な変調度で
変調するように変調度可変回路１４を制御し、したがっ
て、個人差にかかわらず常に一定の変調信号を得ること
ができる。The determination circuit 15 controls the modulation degree variable circuit 14 so that the modulation circuit 16 modulates with an appropriate modulation degree based on the level of the audio signal averaged by the averaging circuit 13. A constant modulation signal can be obtained.
発明の詳細
な説明したように、本発明は、音声信号を可変の変調度
で変調する変調回路と、音声信号のレベルを平均化する
回路を設け、この平均化された信号により、変調回路の
変調度が適性になるようにしたので、入力音声信号の大
きさにかかわらず一定の変調信号を得ることができ、し
たがって、個人差にかかわらず常に一定の変調信号を得
ることができる。As described in detail, the present invention includes a modulation circuit that modulates an audio signal with a variable modulation degree and a circuit that averages the level of the audio signal. Since the degree of modulation is made appropriate, a constant modulation signal can be obtained regardless of the magnitude of the input audio signal, and therefore a constant modulation signal can always be obtained regardless of individual differences.
第１図は、本発明に係るコードレス電話装置の一実施例
を示すブロック図、第２図は、従来のコードレス電話装
置を示すブロック図である。
１１・・・音声入力回路、１２・・・音声信号増幅回路
、１３・・・平均化回路、１４・・・変調度可変回路、
１５・・・判定回路、１６・・・変調回路、１７・・・
送信回路。
第１ＩＩFIG. 1 is a block diagram showing an embodiment of a cordless telephone device according to the present invention, and FIG. 2 is a block diagram showing a conventional cordless telephone device. 11...Audio input circuit, 12...Audio signal amplification circuit, 13...Averaging circuit, 14...Modulation degree variable circuit,
15... Judgment circuit, 16... Modulation circuit, 17...
Transmission circuit. 1II
Claims (1)
号のレベルを平均化する回路と、前記平均化回路により
平均化された信号により、前記変調回路の変調度が適性
になるように制御する手段とを有するコードレス電話装
置。A modulation circuit that modulates the audio signal with a variable modulation degree, a circuit that averages the level of the audio signal, and a signal averaged by the averaging circuit to control the modulation degree of the modulation circuit to be appropriate. A cordless telephone device having means for.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP300890A JPH03208442A (en) | 1990-01-10 | 1990-01-10 | Cordless telephone set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP300890A JPH03208442A (en) | 1990-01-10 | 1990-01-10 | Cordless telephone set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03208442A true JPH03208442A (en) | 1991-09-11 |
Family
ID=11545321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP300890A Pending JPH03208442A (en) | 1990-01-10 | 1990-01-10 | Cordless telephone set |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03208442A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6070088A (en) * | 1996-05-28 | 2000-05-30 | Nec Corporation | Mobile telephone set with automatic sound level control |
| US6760453B1 (en) | 1998-03-30 | 2004-07-06 | Nec Corporation | Portable terminal device for controlling received voice level and transmitted voice level |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5455352A (en) * | 1977-10-13 | 1979-05-02 | Gen Corp | Automatic modulation factor limiting circuit |
| JPS5492005A (en) * | 1977-12-29 | 1979-07-20 | Sanyo Electric Co Ltd | Automatic modulation factor control circuit of transmitter |
-
1990
- 1990-01-10 JP JP300890A patent/JPH03208442A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5455352A (en) * | 1977-10-13 | 1979-05-02 | Gen Corp | Automatic modulation factor limiting circuit |
| JPS5492005A (en) * | 1977-12-29 | 1979-07-20 | Sanyo Electric Co Ltd | Automatic modulation factor control circuit of transmitter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6070088A (en) * | 1996-05-28 | 2000-05-30 | Nec Corporation | Mobile telephone set with automatic sound level control |
| US6760453B1 (en) | 1998-03-30 | 2004-07-06 | Nec Corporation | Portable terminal device for controlling received voice level and transmitted voice level |
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