JPH09200110A - Mobile terminal equipment - Google Patents

Mobile terminal equipment

Info

Publication number
JPH09200110A
JPH09200110A JP8005233A JP523396A JPH09200110A JP H09200110 A JPH09200110 A JP H09200110A JP 8005233 A JP8005233 A JP 8005233A JP 523396 A JP523396 A JP 523396A JP H09200110 A JPH09200110 A JP H09200110A
Authority
JP
Japan
Prior art keywords
battery
storage battery
capacity
mobile terminal
power
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
Application number
JP8005233A
Other languages
Japanese (ja)
Inventor
Kensho Sugimoto
憲昭 杉本
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.)
Kokusai Electric Corp
Original Assignee
Kokusai Electric 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 Kokusai Electric Corp filed Critical Kokusai Electric Corp
Priority to JP8005233A priority Critical patent/JPH09200110A/en
Publication of JPH09200110A publication Critical patent/JPH09200110A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers

Landscapes

  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide the mobile terminal equipment in which the service life of a battery is extended and the frequency of charging is reduced. SOLUTION: The terminal equipment is provided with a battery 2 and a secondary battery 4 charged by a solar cell 3 as a power supply. Then a changeover switch 6 is used to select the secondary battery 4 or the battery 2 for the connection to a main body 1, and a capacity detection circuit 5 detects a remaining capacity of the secondary battery 4 and provides an output of a switching signal used to throw the changeover switch 6 to the position of the battery 2 when the capacity of the seconddry battery 4 reaches a prescribed value or below.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、携帯電話、ＰＨＳ
等の移動端末に用いられる移動端末装置に係り、特にバ
ッテリーを長持ちさせて充電の頻度を少なくすることが
できる移動端末装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable telephone, a PHS
The present invention relates to a mobile terminal device used for a mobile terminal such as a mobile terminal device, and more particularly to a mobile terminal device capable of making a battery last longer and reducing the frequency of charging.

【０００２】[0002]

【従来の技術】まず、従来の移動端末装置について図２
を使って説明する。図２は、従来の移動端末装置の概略
構成ブロック図である。従来の移動端末装置は、図２に
示すように、通話に伴う通信制御を行う本体１と、本体
１に電力を供給するバッテリー２とから構成されてお
り、本体１において電源スイッチ（図示せず）がＯＮに
なると、バッテリー２から本体１に電力が供給されるよ
うになっている。2. Description of the Related Art First, a conventional mobile terminal device is shown in FIG.
I will explain using. FIG. 2 is a schematic block diagram of a conventional mobile terminal device. As shown in FIG. 2, the conventional mobile terminal device includes a main body 1 that performs communication control associated with a call and a battery 2 that supplies electric power to the main body 1. The main body 1 includes a power switch (not shown). ) Is turned on, electric power is supplied from the battery 2 to the main body 1.

【０００３】バッテリー２としては、ニッケル水素やリ
チウムイオン等の充電式電池が用いられており、容量が
少なくなると、充電を行うようになっている。A rechargeable battery such as nickel hydrogen or lithium ion is used as the battery 2, and the battery 2 is charged when the capacity is reduced.

【０００４】[0004]

【発明が解決しようとする課題】しかしながら、上記従
来の移動端末装置では、バッテリーの容量は一定である
ため、長時間の通話を行った場合等は、すぐにバッテリ
ーの容量が低下してしまい、頻繁に充電を行わなければ
ならず、充電作業が煩わしいという問題点があった。However, in the above-mentioned conventional mobile terminal device, since the battery capacity is constant, the battery capacity immediately decreases when a call is made for a long time. There has been a problem that charging has to be done frequently, which makes the charging work troublesome.

【０００５】本発明は上記実情に鑑みて為されたもの
で、バッテリーを長持ちさせ、充電の頻度を少なくする
ことができる移動端末装置を提供することを目的とす
る。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a mobile terminal device that can prolong the life of a battery and reduce the frequency of charging.

【０００６】[0006]

【課題を解決するための手段】上記従来例の問題点を解
決するための請求項１記載の発明は、移動端末装置にお
いて、電源として、バッテリーと、太陽電池によって充
電される蓄電池とを備え、前記蓄電池の容量が一定値を
超えている場合には前記蓄電池から電力を供給し、前記
蓄電池の容量が一定値以下の場合には前記バッテリーか
ら電力を供給することを特徴としており、蓄電池の容量
が十分な場合には蓄電池から電力を供給して、バッテリ
ーの容量低下を防ぎ、バッテリーを長持ちさせて充電頻
度を少なくすることができる。The invention according to claim 1 for solving the problems of the above-mentioned conventional example is a mobile terminal device, which comprises a battery as a power source and a storage battery charged by a solar cell, When the capacity of the storage battery exceeds a certain value, power is supplied from the storage battery, and when the capacity of the storage battery is less than a certain value, power is supplied from the battery, and the capacity of the storage battery is When is sufficient, power can be supplied from the storage battery to prevent the capacity of the battery from decreasing, the battery to last longer, and the charging frequency to be reduced.

【０００７】上記従来例の問題点を解決するための請求
項２記載の発明は、移動端末装置において、バッテリー
と、太陽電池によって充電される蓄電池と、前記バッテ
リー又は前記蓄電池の何れか一方を電源として接続する
切替スイッチと、前記蓄電池の容量を検知する容量検知
回路とを有し、前記切替スイッチが前記容量検知回路か
らの信号に基づいて切り替わるスイッチであり、前記容
量検知回路が、前記蓄電池の容量が一定値以下である場
合に、前記切替スイッチを前記バッテリー側に切り替え
る信号を出力する容量検知回路であることを特徴として
いるので、蓄電池の容量が不十分の場合のみバッテリー
を用いるようにして、バッテリーの容量低下を防ぎ、バ
ッテリーを長持ちさせて、充電頻度を少なくすることが
できる。According to a second aspect of the present invention for solving the above-mentioned problems of the conventional example, in a mobile terminal device, a battery, a storage battery charged by a solar cell, and one of the battery and the storage battery are powered. And a capacity detection circuit for detecting the capacity of the storage battery, the changeover switch is a switch that switches based on a signal from the capacity detection circuit, the capacity detection circuit, of the storage battery When the capacity is less than a certain value, it is characterized by a capacity detection circuit that outputs a signal to switch the changeover switch to the battery side, so use the battery only when the capacity of the storage battery is insufficient. , It is possible to prevent the capacity of the battery from decreasing, make the battery last longer, and reduce the charging frequency.

【０００８】[0008]

【発明の実施の形態】本発明の実施の形態について図面
を参照しながら説明する。本発明の実施の形態に係る移
動端末装置（本装置）は、太陽電池で発電された電力を
蓄える蓄電池を備え、通常は、蓄電池を電源として用
い、蓄電池の容量が一定水準以下になった場合に電力の
供給源をバッテリーに切り替えるようにして、バッテリ
ーを長持ちさせることができるようにしたものである。Embodiments of the present invention will be described with reference to the drawings. A mobile terminal device (this device) according to an embodiment of the present invention includes a storage battery that stores electric power generated by a solar cell, and normally uses the storage battery as a power source, and when the capacity of the storage battery is below a certain level. By switching the power source to the battery, the battery can last longer.

【０００９】本装置の構成を図１を使って説明する。図
１は、本発明の実施の形態に係る移動端末装置（本装
置）の構成ブロック図である。図１に示すように、本装
置は、従来と同様の部分として、通話に伴う送受信等を
行う本体１と、充電式電池から成るバッテリー２と、本
装置の特徴部分として、太陽電池３と、太陽電池３から
の電力を蓄える蓄電池４と、蓄電池４の容量を検出する
容量検知回路５と、本体１への電源供給源を蓄電池４又
はバッテリー２に切り替える切替スイッチ６とから構成
されている。そして、太陽電池３は、蓄電池４に接続さ
れ、蓄電池４とバッテリー２とは切替スイッチ６を介し
て本体１に接続されている。The configuration of this apparatus will be described with reference to FIG. FIG. 1 is a configuration block diagram of a mobile terminal device (this device) according to an embodiment of the present invention. As shown in FIG. 1, the present device includes a main body 1 that performs transmission / reception accompanying a call, a battery 2 that includes a rechargeable battery, and a solar cell 3 that is a characteristic part of the present device, as in the related art. The storage battery 4 stores electric power from the solar cell 3, a capacity detection circuit 5 that detects the capacity of the storage battery 4, and a changeover switch 6 that switches the power supply source to the main body 1 to the storage battery 4 or the battery 2. The solar cell 3 is connected to the storage battery 4, and the storage battery 4 and the battery 2 are connected to the main body 1 via the changeover switch 6.

【００１０】次に各部の構成及び動作について具体的に
説明する。太陽電池３は、太陽光等の光エネルギーを電
気エネルギー（電力）に変換する光電変換素子であり、
光が照射されると、入射光に応じた電力を発生するもの
である。Next, the configuration and operation of each section will be specifically described. The solar cell 3 is a photoelectric conversion element that converts light energy such as sunlight into electric energy (electric power),
When irradiated with light, it generates electric power according to the incident light.

【００１１】また、蓄電池４は、太陽電池３で発生した
電力を蓄える２次電池であり、本体１への電源として用
いられるものである。すなわち、蓄電池４は、太陽電池
３によって充電され、本体１に電力を供給して放電する
ようになっている。The storage battery 4 is a secondary battery that stores the electric power generated by the solar battery 3, and is used as a power source for the main body 1. That is, the storage battery 4 is charged by the solar cell 3 and supplies electric power to the main body 1 to be discharged.

【００１２】容量検知回路５は、蓄電池４に接続され、
常に蓄電池４の容量を検知して、蓄電池の容量が一定値
以下になった場合に、スイッチをバッテリー２側に切り
替える切替信号を切替スイッチ６に出力するものであ
る。The capacity detection circuit 5 is connected to the storage battery 4,
The capacity of the storage battery 4 is constantly detected, and when the capacity of the storage battery becomes a certain value or less, a switching signal for switching the switch to the battery 2 side is output to the changeover switch 6.

【００１３】切替スイッチ６は、本体１への電力供給源
を蓄電池４又はバッテリー２に切り替えるスイッチであ
り、通常は蓄電池４の方に接続して、蓄電池４から本体
１に電力を供給するようにしているが、容量検知回路５
からの切替信号が入力されると、切替スイッチ６はバッ
テリー２側に切り替わり、バッテリー２から本体１に電
力を供給する。そして、容量検知回路５からの切替信号
が入力されなくなると、つまり、蓄電池４の容量が一定
値を超えると、切替スイッチ６は、再び蓄電池４側に切
り替わるようになっている。The changeover switch 6 is a switch for switching the power supply source to the main body 1 to the storage battery 4 or the battery 2. Normally, the changeover switch 6 is connected to the storage battery 4 to supply electric power from the storage battery 4 to the main body 1. However, the capacitance detection circuit 5
When the switching signal from is input, the changeover switch 6 is switched to the battery 2 side, and power is supplied from the battery 2 to the main body 1. When the switching signal from the capacity detection circuit 5 is not input, that is, when the capacity of the storage battery 4 exceeds a certain value, the changeover switch 6 is switched to the storage battery 4 side again.

【００１４】次に、本装置の動作について図１を用いて
説明する。本装置では、太陽電池３で発生した電力によ
り蓄電池４を充電して、電力を蓄えておき、通常は、切
替スイッチ６を蓄電池４側に接続して、蓄電池４から本
体１へ電力を供給する。そして、容量検知回路５が、蓄
電池４の容量を検知して、蓄電池４の容量が予め設定さ
れた一定値以下になった場合に、切替スイッチ６に対し
て切り替え信号を出力する。切替スイッチ６は、通常は
蓄電池４側に接続しているが、容量検知回路５からの切
替信号が入力されると、切替スイッチ６はバッテリー２
側に切り替わり、バッテリー２から電力を供給するよう
にしている。Next, the operation of this apparatus will be described with reference to FIG. In this device, the storage battery 4 is charged by the power generated by the solar cell 3 to store the power, and normally, the changeover switch 6 is connected to the storage battery 4 side to supply the power from the storage battery 4 to the main body 1. . Then, the capacity detection circuit 5 detects the capacity of the storage battery 4, and outputs a switching signal to the changeover switch 6 when the capacity of the storage battery 4 becomes equal to or less than a preset constant value. The changeover switch 6 is normally connected to the storage battery 4 side, but when the changeover signal from the capacity detection circuit 5 is input, the changeover switch 6 is changed to the battery 2 side.
It is switched to the side and power is supplied from the battery 2.

【００１５】これにより、本装置では、蓄電池４の容量
が十分にある場合には蓄電池４から電力を供給し、蓄電
池４の容量が不十分になった場合にバッテリー２から電
力を供給するようにして、バッテリー２を補助的に用い
ることにより、バッテリー２を長持ちさせることができ
るものである。Thus, in this apparatus, the power is supplied from the storage battery 4 when the capacity of the storage battery 4 is sufficient, and the power is supplied from the battery 2 when the capacity of the storage battery 4 becomes insufficient. By using the battery 2 as an auxiliary, the battery 2 can last longer.

【００１６】本発明の実施の形態に係る移動端末装置に
よれば、電源として従来と同様のバッテリー２と、太陽
電池３によって充電される蓄電池４とを備えて、切替ス
イッチ６で蓄電池４又はバッテリー２を選択するように
し、更に、容量検知回路５が蓄電池４の容量を検知して
蓄電池４の容量が一定値以下になった場合に、スイッチ
をバッテリー２側に切り替えるようにしているので、蓄
電池４の容量が十分な場合には蓄電池４から電力を供給
して、バッテリー２の容量低下を防ぐことができ、ま
た、蓄電池４の容量が不十分な場合にはバッテリー２か
ら電力を供給するようにして、２つの電源を使い分ける
ことによりバッテリー２を長持ちさせて、充電頻度を少
なくすることができる効果がある。According to the mobile terminal device according to the embodiment of the present invention, the battery 2 similar to the conventional one as a power source and the storage battery 4 charged by the solar cell 3 are provided, and the storage battery 4 or the battery is switched by the changeover switch 6. 2 is selected, and when the capacity detection circuit 5 detects the capacity of the storage battery 4 and the capacity of the storage battery 4 becomes a certain value or less, the switch is switched to the battery 2 side. When the capacity of the storage battery 4 is sufficient, power can be supplied from the storage battery 4 to prevent the capacity of the battery 2 from decreasing, and when the capacity of the storage battery 4 is insufficient, the power can be supplied from the battery 2. By using the two power sources properly, the battery 2 can last longer and the charging frequency can be reduced.

【００１７】次に、本発明の実施の形態に係る別の移動
端末装置について説明する。別の移動端末装置（別の装
置）は、図１に示した移動端末装置と同様の構成である
が、切替スイッチ６を本体１からも制御できるようにし
ている点が図１の装置とは異なっている。Next, another mobile terminal device according to the embodiment of the present invention will be described. Another mobile terminal device (another device) has the same configuration as the mobile terminal device shown in FIG. 1, but is different from the device of FIG. 1 in that the changeover switch 6 can be controlled from the main body 1 as well. Is different.

【００１８】一般に、移動端末装置の消費電力は、送信
時及び受信時には大きく、電源ＯＮでも送受信時以外は
あまり大きくない。そこで、別の装置では、消費電力の
大きい送受信時には切替スイッチ６をバッテリー２側に
切り替えて、安定した電力供給を行い、その他の場合に
は蓄電池４から電力を供給してバッテリー６の容量低下
を防ぐようにしている。In general, the power consumption of a mobile terminal device is large at the time of transmission and reception, and is not so large even when the power is turned on except during transmission and reception. Therefore, in another device, the switch 6 is switched to the battery 2 side for stable power supply during transmission and reception with large power consumption, and in other cases, power is supplied from the storage battery 4 to reduce the capacity of the battery 6. I try to prevent it.

【００１９】具体的に説明すると、電源ＯＮの状態で、
本体１の制御部は、本体１において送信又は受信の動作
を行っているかどうかを監視し、送信、受信の動作を行
っている場合には、切替スイッチ６に対して切替信号を
出力し、切替スイッチ６をバッテリー２側に切り替える
ようになっている。また、送受信時以外の場合、本体１
の制御部は、切替信号を出力せず、図１の例と同様に容
量検出回路５からの信号により、切替スイッチ６を制御
する。More specifically, with the power supply turned on,
The control unit of the main body 1 monitors whether or not the main body 1 is performing a transmission or reception operation, and when the main body 1 is performing a transmission or reception operation, outputs a switching signal to the changeover switch 6 to perform switching. The switch 6 is switched to the battery 2 side. Also, except when sending and receiving, the main unit 1
1 does not output the switching signal, but controls the changeover switch 6 by the signal from the capacitance detection circuit 5 as in the example of FIG.

【００２０】これにより、消費電力の大きい送受信時に
は、バッテリー２から電力を供給することができ、安定
した電力供給を行って、通話が途切れることのないよう
にできる効果がある。As a result, during transmission / reception with high power consumption, power can be supplied from the battery 2, and there is an effect that stable power supply can be performed and communication can be prevented from being interrupted.

【００２１】本発明の実施の形態に係る別の移動端末装
置によれば、本体１の制御部が、送受信の動作中である
かどうかを判断し、送受信中であれば、切替スイッチ６
に対して切り替え信号を送出し、切替スイッチ６をバッ
テリー２側に切り替えるようにしているので、消費電力
の大きい送受信時にはバッテリー２から電力を供給し
て、電力供給が途切れることのないよう、安定した電力
供給を行うことができる効果がある。According to another mobile terminal device according to the embodiment of the present invention, the control unit of the main body 1 judges whether or not the transmitting / receiving operation is being performed, and if the transmitting / receiving operation is being performed, the changeover switch 6
A switching signal is sent to the battery 2 to switch the battery to the side of the battery 2. Therefore, power is supplied from the battery 2 during transmission / reception that consumes a large amount of power, and the power supply is stable without interruption. There is an effect that power can be supplied.

【００２２】[0022]

【発明の効果】請求項１記載の発明によれば、電源とし
て、バッテリーの他に太陽電池で充電される蓄電池を備
え、蓄電池の容量が十分な場合には、バッテリーではな
く蓄電池から電力を供給する移動端末装置としているの
で、バッテリーの容量低下を防ぎ、バッテリーを長持ち
させて、充電頻度を少なくすることができる効果があ
る。According to the invention of claim 1, as a power source, a storage battery charged by a solar cell is provided in addition to the battery, and when the storage battery has a sufficient capacity, power is supplied from the storage battery instead of the battery. Since it is a mobile terminal device that operates, the battery capacity can be prevented from lowering, the battery can last longer, and the charging frequency can be reduced.

【００２３】請求項２記載の発明によれば、電源とし
て、バッテリーの他に太陽電池で充電される蓄電池を備
え、切替スイッチが容量検知回路からの信号に基づいて
バッテリー又は蓄電池の何れかを本体に接続し、また、
容量検知回路が、蓄電池の容量を検知して、蓄電池の容
量が一定値以下の場合に切替スイッチをバッテリー側に
切り替える信号を出力する移動端末装置としているの
で、蓄電池の容量が不十分の場合のみバッテリーを用
い、蓄電池の容量が一定値以上の場合には、蓄電池から
電力を供給してバッテリーの容量低下を防ぎ、バッテリ
ーを長持ちさせて、充電頻度を少なくすることができる
効果がある。According to the second aspect of the present invention, in addition to the battery, a storage battery charged by a solar cell is provided as a power source, and the changeover switch uses either the battery or the storage battery as a main body based on a signal from the capacity detection circuit. Connected to
The capacity detection circuit is a mobile terminal device that detects the capacity of the storage battery and outputs a signal to switch the changeover switch to the battery side when the capacity of the storage battery is below a certain value, so only when the capacity of the storage battery is insufficient. When a battery is used and the capacity of the storage battery is a certain value or more, there is an effect that power can be supplied from the storage battery to prevent the capacity of the storage battery from decreasing, the battery to last longer, and the charging frequency to be reduced.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の実施の形態に係る移動端末装置（本装
置）の構成ブロック図である。FIG. 1 is a configuration block diagram of a mobile terminal device (present device) according to an embodiment of the present invention.

【図２】従来の移動端末装置の概略構成ブロック図であ
る。FIG. 2 is a schematic block diagram of a conventional mobile terminal device.

【符号の説明】[Explanation of symbols]

１…本体、 ２…バッテリー、 ３…太陽電池、 ４…
蓄電池、 ５…容量検知回路、 ６…切替スイッチ1 ... Main body, 2 ... Battery, 3 ... Solar cell, 4 ...
Storage battery, 5 ... Capacity detection circuit, 6 ... Changeover switch

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 電源として、バッテリーと、太陽電池に
よって充電される蓄電池とを備え、前記蓄電池の容量が
一定値を超えている場合には前記蓄電池から電力を供給
し、前記蓄電池の容量が一定値以下の場合には前記バッ
テリーから電力を供給することを特徴とする移動端末装
置。1. A battery as a power source, and a storage battery charged by a solar cell. When the capacity of the storage battery exceeds a certain value, electric power is supplied from the storage battery, and the capacity of the storage battery is constant. A mobile terminal device, wherein power is supplied from the battery when the value is less than or equal to a value. 【請求項２】 バッテリーと、太陽電池によって充電さ
れる蓄電池と、前記バッテリー又は前記蓄電池の何れか
一方を電源として接続する切替スイッチと、前記蓄電池
の容量を検知する容量検知回路とを有し、前記切替スイ
ッチが前記容量検知回路からの信号に基づいて切り替わ
るスイッチであり、前記容量検知回路が、前記蓄電池の
容量が一定値以下である場合に、前記切替スイッチを前
記バッテリー側に切り替える信号を出力する容量検知回
路であることを特徴とする移動端末装置。2. A battery, a storage battery charged by a solar cell, a changeover switch for connecting either one of the battery or the storage battery as a power source, and a capacity detection circuit for detecting the capacity of the storage battery, The changeover switch is a switch that switches based on a signal from the capacity detection circuit, and the capacity detection circuit outputs a signal that switches the changeover switch to the battery side when the capacity of the storage battery is a certain value or less. A mobile terminal device, which is a capacity detection circuit that operates.
JP8005233A 1996-01-16 1996-01-16 Mobile terminal equipment Pending JPH09200110A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8005233A JPH09200110A (en) 1996-01-16 1996-01-16 Mobile terminal equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8005233A JPH09200110A (en) 1996-01-16 1996-01-16 Mobile terminal equipment

Publications (1)

Publication Number Publication Date
JPH09200110A true JPH09200110A (en) 1997-07-31

Family

ID=11605478

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8005233A Pending JPH09200110A (en) 1996-01-16 1996-01-16 Mobile terminal equipment

Country Status (1)

Country Link
JP (1) JPH09200110A (en)

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