JPH0645267Y2 - Electronics - Google Patents
ElectronicsInfo
- Publication number
- JPH0645267Y2 JPH0645267Y2 JP1985043794U JP4379485U JPH0645267Y2 JP H0645267 Y2 JPH0645267 Y2 JP H0645267Y2 JP 1985043794 U JP1985043794 U JP 1985043794U JP 4379485 U JP4379485 U JP 4379485U JP H0645267 Y2 JPH0645267 Y2 JP H0645267Y2
- Authority
- JP
- Japan
- Prior art keywords
- battery
- main power
- power supply
- low battery
- panel
- 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.)
- Expired - Lifetime
Links
Description
【考案の詳細な説明】 〔考案の技術分野〕 本考案は主電源に電池を使用したハンドヘルドコンピュ
ータ等の電子機器に係り、特に、電池電圧低下（以下、
ローバッテリと称する）の警告表示を行なう電子機器に
関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an electronic device such as a handheld computer using a battery as a main power source, and particularly to a battery voltage drop (hereinafter,
The present invention relates to an electronic device that displays a warning (referred to as a low battery).
主電源に電池を使用し、液晶（LCD）ディスプレイにEL
（電界発光板）のバックライトが付加された表示装置を
有するハンドヘルドコンピュータ等の電子機器において
は、通常、電池電圧の低下により電子機器の正常動作が
保証できなくなるため、電池の交換（１次電池の場合）
又は電池の充電（２次電池の場合）等の対応がオペレー
タにより迅速に行なわれる必要がある。Uses a battery as the main power source, and EL on the liquid crystal (LCD) display.
In an electronic device such as a handheld computer having a display device to which a backlight of an (electroluminescence plate) is added, normal operation of the electronic device cannot be guaranteed due to a decrease in battery voltage. Therefore, battery replacement (primary battery in the case of)
Alternatively, it is necessary for the operator to promptly take measures such as charging the battery (in the case of a secondary battery).
そのためのローバッテリを知らせる手段として、従来は
第３図に示すような回路を用いてLED（発光ダイオー
ド）を点灯又は点滅させる方法が採られてきた。As a means for informing the low battery for that purpose, conventionally, a method of lighting or blinking an LED (light emitting diode) using a circuit as shown in FIG. 3 has been adopted.
すなわち、第３図において、（１）は主電源電池、
（２）はELパネル、（３）はEL駆動電源、（４）はロー
バッテリ検出回路、（５）はLED、（６）は点灯制御用
トランジスタ、（７）は電流制御用抵抗であり、ローバ
ッテリ検出出力によりトランジスタＱ（６）が導通し、
LED（５）が常注目場所とは別の場所で発光してローバ
ッテリを表示する。That is, in FIG. 3, (1) is the main power battery,
(2) is an EL panel, (3) is an EL drive power source, (4) is a low battery detection circuit, (5) is an LED, (6) is a lighting control transistor, (7) is a current control resistor, Transistor Q (6) becomes conductive due to low battery detection output,
The LED (5) lights up at a place different from the usual place of interest to display a low battery.
上記従来のように、LEDの点灯もしくは点滅だけではロ
ーバッテリの表示はオペレータに認識されにくいという
欠点があった。As in the above-mentioned conventional case, there is a drawback in that it is difficult for the operator to recognize the indication of the low battery only by lighting or blinking the LED.
本考案は電子機器に用いられている主電源電池のローバ
ッテリをオペレータに認識させ易くし、電池電圧の低下
によるデータ等の消滅を見落とすことなく防止できるよ
うにすることを目的とする。An object of the present invention is to make it easy for an operator to recognize a low battery of a main power supply battery used in an electronic device, and to prevent the disappearance of data and the like due to a decrease in battery voltage without being overlooked.
本考案は、主電源電池と、液晶ディスプレイとバックラ
イトパネルとからなる表示装置と、上記主電源電池に接
続されその電圧の低下を検出するローバッテリ検出回路
と、このローバッテリ検出回路によるローバッテリ検出
時に上記バックライトパネル全面を点滅する制御回路と
を備えたことを特徴とするものである。The present invention relates to a display device including a main power supply battery, a liquid crystal display and a backlight panel, a low battery detection circuit connected to the main power supply battery for detecting a decrease in the voltage, and a low battery by the low battery detection circuit. A control circuit for blinking the entire surface of the backlight panel at the time of detection is provided.
第１図は本考案の一実施例を示すブロック図である。同
図において、（10）は電子機器において用いられている
主電源電池、（11）は電池電圧をモニターし、設定電圧
以下になると信号を発生するローバッテリ検出回路、
（12）はこのローバッテリ検出回路（11）からの信号を
受けて始動し、第２図に示すような波形を発生するパル
ス発生回路、（13）は液晶ディスプレイとともに表示装
置（不図示）を構成し、通常は液晶ディスプレイのバッ
クライトの働きをするELパネル、（14）はこのELパネル
（13）を駆動する駆動電源、（15）は前記パルス発生回
路（12）からのパルスを受け、駆動電源（14）をON/OFF
するスイッチング回路である。FIG. 1 is a block diagram showing an embodiment of the present invention. In the figure, (10) is a main power supply battery used in electronic equipment, (11) is a low battery detection circuit that monitors the battery voltage and generates a signal when the voltage drops below a set voltage,
(12) is a pulse generation circuit that starts by receiving a signal from the low battery detection circuit (11) and generates a waveform as shown in FIG. 2, and (13) is a liquid crystal display and a display device (not shown). An EL panel that constitutes a backlight of a liquid crystal display, (14) is a driving power source for driving the EL panel (13), and (15) receives a pulse from the pulse generating circuit (12), Turn on / off the drive power supply (14)
It is a switching circuit that does.
次に、動作を説明する。Next, the operation will be described.
まず、主電源電池（10）の電圧が低下し設定電圧に達す
ると、ローバッテリ検出回路（11）が信号を出力し、こ
の信号を受けたパルス発生回路（12）が第２図に示すよ
うなパルスを発生する。このパルスのレベルの“H"およ
び“L"に応じて、常時はONしていたスイッチング回路
（15）がOFF/ONする。このスイッチング回路（15）のOF
FのたびにELパネル（13）の駆動電源（14）に電源が供
給されず、液晶ディスプレイのバックライトとなってい
るELパネル（13）が消灯するので、オペレータの注視部
に点滅が認められるようになる。それによりオペレータ
は必要なデータを外部記憶装置等に保存し、データの消
滅防止等の対策を行ない、主電源電池（10）の充電ある
いは交換を行なう。First, when the voltage of the main power supply battery (10) drops and reaches the set voltage, the low battery detection circuit (11) outputs a signal, and the pulse generation circuit (12) receiving this signal outputs the signal as shown in FIG. Generate a pulse. The switching circuit (15), which was normally ON, turns OFF / ON according to the "H" and "L" levels of this pulse. OF of this switching circuit (15)
The power is not supplied to the drive power supply (14) of the EL panel (13) at every F, and the EL panel (13), which is the backlight of the liquid crystal display, turns off, so blinking is observed in the operator's gaze area. Like As a result, the operator stores necessary data in an external storage device or the like, takes measures such as prevention of disappearance of the data, and charges or replaces the main power supply battery (10).
本考案は以上のようになるものであって、従来のように
小さなLEDを発光させるのに比べ、操作中常時注視する
部分である表示装置を構成するバックライトパネル全面
が点滅するので、オペレータは認識することが容易とな
り、見落すことがなくなるという効果を奏する。The present invention is as described above, and as compared to the conventional small LED that emits light, the entire backlight panel that constitutes the display device, which is the part that is constantly watched during operation, blinks. This has the effect of making it easy to recognize and not overlooking.
また、バックライトを点滅させるので、バックライトの
駆動電源やバックライト自体での消費電流を減少するこ
とができる等の効果が得られる。Further, since the backlight is blinked, it is possible to obtain an effect such that the power consumption of the backlight driving power source and the backlight itself can be reduced.
第１図は本考案の一実施例を示すブロック図、第２図は
スイッチングのための波形例を示す図、第３図は従来例
を示す図である。 10:主電源電池、 11:ローバッテリ検出回路、 12:パルス発生回路（制御回路）、 13:ELパネル（バックライトパネル）、 14:駆動電源（制御回路）、 15:スイッチング回路（制御回路）。FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing waveform examples for switching, and FIG. 3 is a diagram showing a conventional example. 10: Main power battery, 11: Low battery detection circuit, 12: Pulse generation circuit (control circuit), 13: EL panel (backlight panel), 14: Driving power supply (control circuit), 15: Switching circuit (control circuit) .
Claims (1)
ライトパネルとからなる表示装置と、上記主電源電池に
接続されその電圧の低下を検出するローバッテリ検出回
路と、このローバッテリ検出回路によるローバッテリ検
出時に上記バックライトパネル全面を点滅する制御回路
とを備えたことを特徴とする電子機器。1. A display device comprising a main power supply battery, a liquid crystal display and a back light panel, a low battery detection circuit connected to the main power supply battery for detecting a decrease in the voltage, and a low battery detection circuit. An electronic device, comprising: a control circuit that blinks the entire surface of the backlight panel when a battery is detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985043794U JPH0645267Y2 (en) | 1985-03-28 | 1985-03-28 | Electronics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985043794U JPH0645267Y2 (en) | 1985-03-28 | 1985-03-28 | Electronics |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61161681U JPS61161681U (en) | 1986-10-07 |
| JPH0645267Y2 true JPH0645267Y2 (en) | 1994-11-16 |
Family
ID=30555786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985043794U Expired - Lifetime JPH0645267Y2 (en) | 1985-03-28 | 1985-03-28 | Electronics |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0645267Y2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5152877A (en) * | 1974-11-05 | 1976-05-10 | Suwa Seikosha Kk | |
| JPS5831111Y2 (en) * | 1977-08-16 | 1983-07-09 | シチズン時計株式会社 | Clock with battery life warning display |
| JPS5497168U (en) * | 1977-12-22 | 1979-07-09 |
-
1985
- 1985-03-28 JP JP1985043794U patent/JPH0645267Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61161681U (en) | 1986-10-07 |
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