JPH01252028A - Radiotelephony system - Google Patents

Radiotelephony system

Info

Publication number
JPH01252028A
JPH01252028A JP63079324A JP7932488A JPH01252028A JP H01252028 A JPH01252028 A JP H01252028A JP 63079324 A JP63079324 A JP 63079324A JP 7932488 A JP7932488 A JP 7932488A JP H01252028 A JPH01252028 A JP H01252028A
Authority
JP
Japan
Prior art keywords
modulator
signal
switch
angle
turned
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
Application number
JP63079324A
Other languages
Japanese (ja)
Other versions
JP2726428B2 (en
Inventor
Kunioki Marui
丸井 國興
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP63079324A priority Critical patent/JP2726428B2/en
Priority to CA000592354A priority patent/CA1301253C/en
Priority to DE68924993T priority patent/DE68924993T2/en
Priority to EP89301983A priority patent/EP0331434B1/en
Priority to US07/316,922 priority patent/US5033111A/en
Priority to KR1019890002540A priority patent/KR920001543B1/en
Publication of JPH01252028A publication Critical patent/JPH01252028A/en
Application granted granted Critical
Publication of JP2726428B2 publication Critical patent/JP2726428B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

PURPOSE:To reduce current consumption by stopping power supply to an angle modulator at the time of waiting reception even when a power source is supplied to a telephone system main body to the angle modulator which adds and modulates a modulating signal to a phase synchronizing loop. CONSTITUTION:When the radiotelephony system main body is in a turning-on condition and a wait receiving condition and a call operating or incoming signal is recognized by a control part 7, a switch 6 is turned on and the power source is supplied to an angle modulator 3. Simultaneously, a timer is set and when a prescribed time lapses, a switch 2 is turned on and the modulating signal is inputted to the angle modulator 3. Thus, an access signal is transmitted through an input terminal 1, the switch 2, the modulator 3, a power amplifier 4 and an antenna 5 to a base station, which is not shown in a figure, and normal calling is executed. After that, when the calling is ended, a signal to turn off the power source of the modulator 3 is outputted from the control part 7 and the switches 6 and 2 are turned off. Then, only the modulator 3 is stopped.

Description

【発明の詳細な説明】 [発明の目的] (産業上の利用分野) 本発明は、たとえば自動車電話装置や携帯形無線電話装
置などの無線電話装置に関する。
DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a radio telephone device such as a car telephone device or a portable radio telephone device.

(従来の技術) 近年、たとえば自動車電話装置や携帯形無線電話装置な
どの無線電話装置が普及している。
(Prior Art) In recent years, wireless telephone devices such as car telephone devices and portable radio telephone devices have become widespread.

上述した従来の無線電話装置では、装置本体の電源が投
入されるとこれと連動して変調器も動作するように構成
されていた。
The conventional radio telephone device described above is configured such that when the main body of the device is powered on, the modulator also operates in conjunction with this.

このように従来の無線電話装置では、装置本体をオン状
態とすると、変調器も連動してオン状態とされるため、
送信しない時にも変調器が動作し待受は時などにおける
消費電流が多くなるという問題があった。このことは携
帯形の無線電話装置のようにバッテリーで動作する場合
、バッテリーの使用時間が短くなるという問題に波及す
る。
In this way, in conventional wireless telephone devices, when the main body of the device is turned on, the modulator is also turned on.
There was a problem in that the modulator operated even when not transmitting, and the current consumption increased during standby. This has an impact on the problem that when operating on a battery, such as a portable radio telephone device, the battery usage time is shortened.

このため、送信のタイミングに連動させて、すなわち送
信しない待受は時には、変調器に電源が投入されないよ
うに制御することが考えられる。
For this reason, it may be possible to control the modulator so that it is not powered on in conjunction with the timing of transmission, that is, in standby mode when no transmission is performed.

(発明が解決しようとする課8) しかしながら、変調器を構成する位相同期ループが送信
すべき周波数と同期を確立するまでに所定の時間を要す
るものであるため、上述したように送信タイミングに連
動させて変調器への電源の投入を制御することは、位相
同期ループの立ち上がり前に変調動作が行われることに
なり、変調器の誤動作の原因となったり、不要波が輻射
されるという問題を生じる。
(Issue 8 to be solved by the invention) However, since it takes a predetermined time for the phase-locked loop that constitutes the modulator to establish synchronization with the frequency to be transmitted, it is necessary to synchronize with the transmission timing as described above. If you control the power supply to the modulator by controlling the power supply to the modulator, the modulation operation will be performed before the phase-locked loop starts up, which may cause malfunction of the modulator or cause problems such as unnecessary waves being radiated. arise.

本発明はこのような事情に基づいてなされたもので、変
調器が非動作状態である待受は時などにおける消費電流
の低減を何ら支障を生ずることなく行うことができる無
線電話装置を提供することを目的とする。
The present invention has been made based on the above circumstances, and provides a wireless telephone device that can reduce the current consumption during standby, when the modulator is inactive, without causing any problems. The purpose is to

[発明の構成] (課題を解決するための手段) 本発明は前記した課題を解決するために、位相同期ルー
プに変調すべき信号を加算して変調する角度変調器を備
えた無線電話装置において、無線電話装置本体の電源が
供給されている状態の待受は受信時に、前記角度変調器
の電源の供給を停止し、送信開始時に、前記角度変調器
に電源を供給し、少なくとも該角度変調器を構成する位
相同期ループの位相同期が確立すべき時間経過した後に
、該位相同期ループに前記変調すべき信号を加算するよ
うにしたことを特徴としている。
[Structure of the Invention] (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a radio telephone device equipped with an angle modulator that adds and modulates a signal to be modulated in a phase-locked loop. , in a standby state in which power is supplied to the main body of the wireless telephone device, at the time of reception, the power supply to the angle modulator is stopped, and at the time of starting transmission, power is supplied to the angle modulator, and at least the angle modulation is performed. The present invention is characterized in that the signal to be modulated is added to the phase-locked loop after a period of time for establishing phase locking of the phase-locked loop constituting the device.

(作 用) 本発明では、無線電話装置本体の電源が供給されている
状態の待受は受信時に、角度変調器の電源の供給を停止
しているので、変調器が非動作状態である待受は時など
における消費電流を大幅に低減できる。
(Function) According to the present invention, the power supply to the angle modulator is stopped during reception when the wireless telephone device is in standby mode while power is being supplied to it. The current consumption can be significantly reduced when the receiver is turned on.

また、送信開始時に、角度変調器に電源を供給し、所定
時間経過後に、位相同期ループに変調すべき信号を加算
するようにしているので、変調器が誤動作したり、不要
波が輻射するといった不具合はなくなる。
In addition, since power is supplied to the angle modulator at the start of transmission and the signal to be modulated is added to the phase-locked loop after a predetermined period of time, the modulator may malfunction or unnecessary waves may be radiated. The problem will disappear.

(実施例) 以下、本発明の実施例を図面に基づいて詳細に説明する
(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

第1図は本発明の一実施例の無線電話装置を説明するた
めのブロック図である。
FIG. 1 is a block diagram for explaining a wireless telephone device according to an embodiment of the present invention.

同図において、1は変調すべき信号が入力される入力端
子、2はスイッチ、3は位相同期ループで構成された角
度変調器である。また、4は電力増幅器(PA) 、5
はアンテナ、6は角度変調器3への電源を制御するスイ
ッチ、7は制御部(LOG)である。
In the figure, 1 is an input terminal into which a signal to be modulated is input, 2 is a switch, and 3 is an angle modulator composed of a phase locked loop. Also, 4 is a power amplifier (PA), 5
6 is an antenna, 6 is a switch for controlling the power supply to the angle modulator 3, and 7 is a control unit (LOG).

角度変調器3は、発振器31、位相比較器(PD)32
、ローパスフィルタ(LPF)33、加算器34、電圧
制御発振器(VCO)35、分周器(1/N)36を備
えており、上述した入力端子1から出力される変調すべ
き信号はFM変調である場合、ローパスフィルタ33と
電圧制御発振器35との間に設けられた加算器34に入
力される。
The angle modulator 3 includes an oscillator 31 and a phase comparator (PD) 32
, a low pass filter (LPF) 33, an adder 34, a voltage controlled oscillator (VCO) 35, and a frequency divider (1/N) 36, and the signal to be modulated output from the input terminal 1 described above is FM modulated. If so, the signal is input to an adder 34 provided between the low-pass filter 33 and the voltage-controlled oscillator 35.

入力端子1に入力された変調すべき信号はスイッチ2を
介して角度変調器3に供給される。変調器3で変調され
た信号は電力増幅器4、アンテナ5を介して送信される
。変調器3の電源はスイッチ6を介して供給される。制
御部7はスイッチ2およびスイッチ6のオン/オフの切
替タイミングを制御する。
A signal to be modulated that is input to an input terminal 1 is supplied to an angle modulator 3 via a switch 2 . The signal modulated by the modulator 3 is transmitted via a power amplifier 4 and an antenna 5. Power for the modulator 3 is supplied via a switch 6. The control unit 7 controls the on/off switching timing of the switch 2 and the switch 6.

次に、上述の無線電話装置の動作を第2図のフローチャ
ートを用いて説明する。
Next, the operation of the above-mentioned radio telephone device will be explained using the flowchart shown in FIG.

まず、無線電話装置本体がオン状態とされた待受は受信
時に、たとえば、ハンドセットをオフフックした場合や
ダイヤルボタンを操作した場合などのユーザ操作(発呼
操作)(ステップ1)または着信信号の受信(ステップ
2)を制御部7が認識すると、この制御部7はスイッチ
6をオンとして変調器3に電源を供給する(ステップ3
)とともに、タイマ(T秒)を設定する(ステップ4)
First, when the wireless telephone device is in the on state, the standby mode is activated by a user operation (calling operation) (step 1), such as when the handset is off-hook or when a dial button is operated, or when an incoming signal is received. When the control unit 7 recognizes (step 2), the control unit 7 turns on the switch 6 and supplies power to the modulator 3 (step 3).
) and set a timer (T seconds) (Step 4)
.

T秒経過した後(ステップ5)制御部7はスイッチ2を
オンとしくステップ6)、変調すべき信号を変調器3に
入力させる。
After T seconds have passed (step 5), the control unit 7 turns on the switch 2 (step 6), and inputs the signal to be modulated into the modulator 3.

これにより、アクセス信号が入力端子1、スイッチ2、
変調器3、電力増幅器4、アンテナ5を介し図示しない
基地局に送信され(ステップ7)、以降通常と同様の通
話が行われる。
This allows the access signal to be sent to input terminal 1, switch 2,
The signal is transmitted to a base station (not shown) via the modulator 3, power amplifier 4, and antenna 5 (step 7), and thereafter, a normal telephone conversation is performed.

なお、上述のT秒は変調器3を構成する位相同期ループ
が同期確立をするに必要な時間より大きな値とする。
Note that the above-mentioned T seconds is set to a value larger than the time required for the phase-locked loop forming the modulator 3 to establish synchronization.

この後、たとえばハンドセットがオンフックされるなど
の操作(終話)が行われ(ステップ8)、この操作にと
もなう信号が制御部7に出力されると変調器3の電源の
供給をオフとし変調すべき信号を停止するように制御部
7によりスイッチ6、スイッチ2がオフ状態とされる(
ステップ9)。
After this, an operation such as putting the handset on-hook (call termination) is performed (step 8), and when a signal accompanying this operation is output to the control unit 7, the power supply to the modulator 3 is turned off and modulation is started. The switch 6 and the switch 2 are turned off by the control unit 7 so as to stop the output signal (
Step 9).

この実施例では、以上のように無線電話装置本体の電源
がオンとされているときであって送信の行われていない
待受は受信時に、変調器3の電源をオフとするようにス
イッチ6がオフとされるので、待受は時などにおける消
費電流を大幅に削減することが可能となる。
In this embodiment, as described above, the switch 6 is set to turn off the power to the modulator 3 during reception when the main body of the wireless telephone device is powered on and no transmission is being performed. is turned off, making it possible to significantly reduce current consumption during standby mode.

また、変調器3を構成する位相同期ループの同期が確立
した後に、変調器3に変調すべき信号を加算するように
しているので、変調器3が誤動作したり、不要波が輻射
するといった不具合はなくなる。
In addition, since the signal to be modulated is added to the modulator 3 after the synchronization of the phase-locked loop that constitutes the modulator 3 is established, problems such as the modulator 3 malfunctioning and unnecessary waves being radiated can occur. will disappear.

なお、以上説明した実施例では、変調すべき信号をFM
変調する場合にその信号をローパスフィルタ33と電圧
制御発振器35との間に設けられた加算器34に入力す
るようにしたが、PM変調する場合は、位相比較器32
とローパスフィルタ33との間に加算器34を設けてこ
の加算器34に入力させてPM変調するように構成して
もよい。
Note that in the embodiment described above, the signal to be modulated is
In the case of modulation, the signal is input to the adder 34 provided between the low-pass filter 33 and the voltage controlled oscillator 35, but in the case of PM modulation, the signal is input to the phase comparator 32.
An adder 34 may be provided between the input signal and the low-pass filter 33, and the signal may be input to the adder 34 for PM modulation.

[発明の効果コ 以上説明したように本発明の無線電話装置は、変調器が
非動作状態である待受は時などにおける消費電流の低減
を何ら支障なく行うことができる。
[Effects of the Invention] As explained above, the radio telephone device of the present invention can reduce the current consumption without any problem during standby mode in which the modulator is inactive.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の一実施例の無線電話装置を説明するた
めのブロック図、第2図は第1図の無線電話装置の動作
を説明するためのフローチャートである。 1  ・・・・・・入力端子 2.6・・・・・・スイッチ 3  ・・・・・・角度変調器 7  ・・・・・・制御部 出願人      株式会社 東芝 代理人 弁理士  須 山 佐 − 第2図
FIG. 1 is a block diagram for explaining a radio telephone device according to an embodiment of the present invention, and FIG. 2 is a flow chart for explaining the operation of the radio telephone device of FIG. 1...Input terminal 2.6...Switch 3...Angle modulator 7...Control unit Applicant Toshiba Corporation Agent Patent attorney Sasa Suyama - Figure 2

Claims (1)

【特許請求の範囲】 位相同期ループに変調すべき信号を加算して変調する角
度変調器を備えた無線電話装置において、 無線電話装置本体の電源が供給されている状態の待受け
受信時に、前記角度変調器の電源の供給を停止し、 送信開始時に、前記角度変調器に電源を供給し、少なく
とも該角度変調器を構成する位相同期ループの位相同期
が確立すべき時間が経過した後に、該位相同期ループに
前記変調すべき信号を加算するようにしたことを特徴と
する無線電話装置。
[Claims] In a radio telephone device equipped with an angle modulator that adds and modulates a signal to be modulated to a phase-locked loop, the angle is Stop the power supply to the modulator, and at the start of transmission, supply power to the angle modulator, and at least after the time period for establishing phase synchronization of the phase-locked loop constituting the angle modulator has elapsed, the phase A radio telephone device characterized in that the signal to be modulated is added to a synchronous loop.
JP63079324A 1988-02-29 1988-03-31 Wireless telephone equipment Expired - Lifetime JP2726428B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP63079324A JP2726428B2 (en) 1988-03-31 1988-03-31 Wireless telephone equipment
CA000592354A CA1301253C (en) 1988-02-29 1989-02-28 Radio telecommunication apparatus
DE68924993T DE68924993T2 (en) 1988-02-29 1989-02-28 Radio telecommunication device.
EP89301983A EP0331434B1 (en) 1988-02-29 1989-02-28 Radio telecommunication apparatus
US07/316,922 US5033111A (en) 1988-02-29 1989-02-28 Radio telecommunication apparatus
KR1019890002540A KR920001543B1 (en) 1988-02-29 1989-02-28 Radio telecommunication apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63079324A JP2726428B2 (en) 1988-03-31 1988-03-31 Wireless telephone equipment

Publications (2)

Publication Number Publication Date
JPH01252028A true JPH01252028A (en) 1989-10-06
JP2726428B2 JP2726428B2 (en) 1998-03-11

Family

ID=13686700

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63079324A Expired - Lifetime JP2726428B2 (en) 1988-02-29 1988-03-31 Wireless telephone equipment

Country Status (1)

Country Link
JP (1) JP2726428B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0591121A (en) * 1991-09-25 1993-04-09 C Ee T V Kiban Gijutsu Kenkyusho:Kk Terminal equipment for polling system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5715548U (en) * 1980-06-30 1982-01-26
JPS59171334A (en) * 1983-03-18 1984-09-27 Matsushita Electric Ind Co Ltd Radio equipment
JPS61199343A (en) * 1985-02-28 1986-09-03 Nec Corp Battery saving circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5715548U (en) * 1980-06-30 1982-01-26
JPS59171334A (en) * 1983-03-18 1984-09-27 Matsushita Electric Ind Co Ltd Radio equipment
JPS61199343A (en) * 1985-02-28 1986-09-03 Nec Corp Battery saving circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0591121A (en) * 1991-09-25 1993-04-09 C Ee T V Kiban Gijutsu Kenkyusho:Kk Terminal equipment for polling system

Also Published As

Publication number Publication date
JP2726428B2 (en) 1998-03-11

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