JPH0327416A - Power controller - Google Patents
Power controllerInfo
- Publication number
- JPH0327416A JPH0327416A JP1162228A JP16222889A JPH0327416A JP H0327416 A JPH0327416 A JP H0327416A JP 1162228 A JP1162228 A JP 1162228A JP 16222889 A JP16222889 A JP 16222889A JP H0327416 A JPH0327416 A JP H0327416A
- Authority
- JP
- Japan
- Prior art keywords
- power
- switch
- power supply
- display
- power switch
- 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
- 238000001514 detection method Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000013256 coordination polymer Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Power Sources (AREA)
Abstract
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、表示部筐体がキーボードを設けた本体上で所
定の回動範囲をもって開閉する、内蔵電池で動作が可能
なラップトップタイプのパーソナルコンピュータ、ワー
ドプロセッサ等の電子機器に用いて好適な電源制御装置
に関する。[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention has a display housing that opens and closes within a predetermined rotation range on a main body provided with a keyboard, and can be operated using a built-in battery. The present invention relates to a power supply control device suitable for use in electronic devices such as laptop-type personal computers and word processors.
（従来の技術）
一般に、内蔵電池を有し、表示部筐体がキーボードを設
けた本体上で所定の回動範囲をもって開閉するラップト
ップタイプのパーソナルコンピュータ、ワードプロセッ
サ等に於いては、使用時に表示部筐体を開くことによっ
て操作者が表示面部に対面して人力操作が可能となり、
表示部筐体を閉じることによって収納、携行等が容易な
構造としている。(Prior Art) Generally, in laptop-type personal computers, word processors, etc., which have a built-in battery and whose display case opens and closes within a predetermined rotation range on the main body equipped with a keyboard, the display during use is By opening the unit housing, the operator can face the display screen and perform manual operation.
The structure allows for easy storage and portability by closing the display housing.
この種、ラップトップタイプのパーソナルコンピュータ
等に於いて、携行時等の非使用時に、誤って電源スイッ
チが操作されると、これに伴って内蔵電池により機器が
動作状態となり、その後の使用時に於いて既に内蔵電池
が消耗して使用できなくなってしまうという不都合が生
じる。If the power switch of this type of laptop-type personal computer is accidentally operated when it is not in use, such as when it is being carried around, the built-in battery will activate the device, and the device will become operational when it is used again. However, the built-in battery is already exhausted and becomes unusable.
（発明が解決しようとする課題）
上記したように、従来では、内蔵電池を備えたラップト
ップタイプのパーソナルコンピュータ等の機器に於いて
、携行時等の非使用時に電源スイッチが誤って操作され
ると、これに伴って内蔵電池により機器が動作状態とな
り、その後の使用時に於いて既に内蔵電池が消耗して使
用できなくなってしまうという不都合があった。(Problems to be Solved by the Invention) As described above, conventionally, in devices such as laptop-type personal computers equipped with built-in batteries, the power switch is accidentally operated when the device is not in use, such as when being carried around. As a result, the built-in battery causes the device to become operational, and the built-in battery is already exhausted and becomes unusable during subsequent use.
本発明は上記実情に鑑みなされたもので、表示部筐体を
閉じているときは、電源スイッチの操作に伴う電源のオ
ン／オフ切替えを無効化して、携行時等の非使用時に誤
って電源スイッチが操作されても以後の機器操作に支障
が生じることのない電源制御機能をもつ電源制御装置を
提供することを目的とする。The present invention was developed in view of the above circumstances, and when the display housing is closed, the power on/off switching associated with the operation of the power switch is disabled, so that it is possible to accidentally turn off the power when not in use, such as when carrying the device. It is an object of the present invention to provide a power supply control device having a power supply control function that does not interfere with subsequent equipment operations even if a switch is operated.
［発明の構成］
（課題を解決するための手段及び作用）本発明は、内部
電源及び同電源を供給制御する電源スイッチを有し、表
示部筐体がキーボードを設けた本体上で所定の回動範囲
をもって開閉するラップトップタイプの電子機器に於い
て、上記表示部筐体が閉じた状態にあるとき、上記電源
スイッチの操作を無効化する電源制御手段を有してなる
構成としたもので、これにより、携行時等の非使用時に
誤って電源スイッチが操作され、その後の使用時に於い
て既に内蔵電池が消耗して使用できなくなってしまうと
いう不都合を回避でき、機器を常に正常な状態に保つこ
とができる。[Structure of the Invention] (Means and Effects for Solving the Problems) The present invention has an internal power supply and a power switch for controlling the supply of the power, and a display unit casing is configured to perform predetermined rotations on a main body provided with a keyboard. In a laptop-type electronic device that opens and closes within a range of movement, the device is configured to include power control means for disabling operation of the power switch when the display housing is in a closed state. This avoids the inconvenience of accidentally operating the power switch when the device is not in use, such as when carrying it around, and the built-in battery is already exhausted and becomes unusable during subsequent use, and the device is always in a normal state. can be kept.
（実施例） 以下図面を参照して本発明の一実施例を説明する。(Example) An embodiment of the present invention will be described below with reference to the drawings.
第１図は本発明の一実施例を示すブロック図であり、第
２図は上記実施例に於ける表示部筐体の開閉状態検出機
構を構成するディスプレイ開閉スイッチの配置例を示す
図である。FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG. 2 is a diagram showing an example of the arrangement of the display opening/closing switch that constitutes the opening/closing state detection mechanism of the display housing in the above embodiment. .
上記各図に於いて、１ｌは装置内部の各コンポーネント
（システム回路１８）に動作用電源を供給するための内
部動作電源となるバッテリイ、１２は装置の動作をオン
／オフ制御する電源スイッチ、１３は装置本体２ｌに回
動可能に設けられた表示部筐体２２が閉じた状態（第２
図の一点鎖線で示す位置）にあることを検出するディス
プレイ開閉スイッチである。ｌ４は上記電源スイッチ１
２，ディスプレイ開閉スイッチｌ３等の各スイッチ信号
を受けて、装置内部の各コンポーネント（システム回路
１８）に所定の動作用電源を供給制御する電源制御用の
１チップマイクロコンピュータ（以下パワーコントロー
ルＣＰＵと称す）であり、ここでは上記各スイッチ１２
． １３の信号をそれぞれ個別に入力する入カポート（
ＩＮ １， ＩＮ ２）とスイッチ回路ｌ６をオン／
オフ制御するための出力ポート（ＯＵＴ’ｌ）を有し、
５
上記各人力ポート（ＩＮ １， ＩＮ ２）の人力信号
状態に従い出力ポート（ＯＩＪＴＩ）の信号を切替え制
御するもので、第３図のフローチャートに示すような電
源制御機能をもつ。ｌ５はバッテリイｉｔの電源から、
パワーコントロールＣＰＵｌ４に供給スる一定電圧の動
作用電源を得る第１の電源回路である。In each of the above figures, 1l is a battery that serves as an internal operating power source for supplying operating power to each component (system circuit 18) inside the device, 12 is a power switch that controls on/off the operation of the device, and 13 is a state in which the display housing 22 rotatably provided on the device main body 2l is closed (second
This is a display opening/closing switch that detects whether the display is in the position indicated by the one-dot chain line in the figure. l4 is the above power switch 1
2. A 1-chip microcomputer (hereinafter referred to as power control CPU) for power supply control that receives switch signals from the display open/close switch l3, etc., and controls the supply of predetermined operating power to each component (system circuit 18) inside the device. ), and here each of the above switches 12
．． Input port for inputting 13 signals individually (
IN 1, IN 2) and switch circuit l6 are turned on/
It has an output port (OUT'l) for off control,
5 It switches and controls the signal of the output port (OIJTI) according to the state of the human power signal of each of the human power ports (IN 1, IN 2), and has a power control function as shown in the flowchart of FIG. l5 is from the battery IT power supply,
This is a first power supply circuit that obtains a constant voltage operating power supply that is supplied to the power control CPU14.
１ＢはパワーコントロールＣ Ｐ Ｕ １４の制御の下
にバッテリイｌ１の電源を出力制御するスイッチ回路で
あり、ここでは、パワーコントロールＣＰＵｌ４の出力
ポート（ＯＵＴＩ．）の信号が“０”状態にあるときス
イッチオフ状態となって上記バッテリイ電源の第２の電
源回路ｌ７への供給を禁止し、又、出力ポート（ＯＩＩ
ＴＩ）の信号が“１”状態にあるときスイッチオン状態
となって上記バッテリイ電源を第２の電源回路ｌ７への
供給する。ｌ７はスイッチ回路１６を介して入力された
バッテリイｌ１の電源からシステム回路ｌ８の各種動作
用電源を得る第２の電源回路である。尚、Ｒは上記電源
スイッチ１２，ディスプレイ開閉スイッチ１３等の各ス
イッチの操作信号をパワーコントロールＣＰＵ１４に入
力するため６
のプルアップ抵抗である。1B is a switch circuit that outputs and controls the power of the battery I1 under the control of the power control CPU 14. Here, when the signal of the output port (OUTI.) of the power control CPU I4 is in the "0" state, the switch circuit The battery is turned off and the supply of the battery power to the second power supply circuit l7 is prohibited, and the output port (OII
When the signal TI) is in the "1" state, the switch is turned on and the battery power is supplied to the second power supply circuit 17. A second power supply circuit l7 obtains power for various operations of the system circuit l8 from the power of the battery l1 inputted through the switch circuit 16. Note that R is a pull-up resistor of 6 for inputting operation signals of each switch such as the power switch 12 and the display opening/closing switch 13 to the power control CPU 14.
第３図は上記パワーコントロールＣＰＵ１４の制御処理
フローを示すフローチャートである。図中、Ｓｌはスイ
ッチ回路ｌ６を制御するための出力ポート（ＯＵＴ１）
の信号を初期化するステップであり、ここでは出力ポー
ト（ＯＵＴＩ）の信号を“０”にする。Ｓ２は電源スイ
ッチｌ２が操作された．ことを検出するステップであり
、電源スイッチ１２が操作されるまで（ＩＮＩ−“０”
となるまで）ループして待つ。Ｓ３はディスプレイ開閉
スイッチｌ３の状態を検出するステップであり、ディス
プレイ開閉スイッチ１３がオン状態となって表示部筐体
２２が閉じた状態（ＩＮ２−“０″）を示しているとき
は電源スイッチ１２の操作が無効とされる（ステップＳ
２に戻る）。Ｓ４は出力ポート（ＯＵＴＩ）の信号を反
転するステップであり、表示部筐体２２が開いた状態（
ＩＮ２−“１”）にあるときに電源スイッチ１２が操作
されると、出力ポート（ ＯＵＴＩ）の信号を反転する
。Ｓ５は電源スイッチ１２の操作が終了したことを検出
する、即ち電源スイッチ１２の１回の操作が完了したこ
とを検出するステップであり、操作完了を検出する（Ｉ
Ｎｌ＝“１”）とステップＳ２に戻る。FIG. 3 is a flowchart showing the control processing flow of the power control CPU 14. In the figure, Sl is an output port (OUT1) for controlling the switch circuit l6.
In this step, the signal of the output port (OUTI) is set to "0". For S2, power switch l2 was operated. This is the step of detecting that the power switch 12 is operated (INI-“0”).
) and waits in a loop. S3 is a step of detecting the state of the display open/close switch l3, and when the display open/close switch 13 is in the on state and the display unit housing 22 is in the closed state (IN2-“0”), the power switch 12 is detected. operation is invalidated (step S
(Return to 2). S4 is a step of inverting the signal of the output port (OUTI), and the display unit casing 22 is in an open state (
When the power switch 12 is operated while the output port is at IN2-“1”), the signal at the output port (OUTI) is inverted. S5 is a step of detecting that the operation of the power switch 12 is completed, that is, detecting that one operation of the power switch 12 is completed, and detects the completion of the operation (I
Nl="1") and the process returns to step S2.
ここで、第１図乃至第３図を参照して本発明の一実施例
に於ける動作を説明する。Here, the operation in one embodiment of the present invention will be explained with reference to FIGS. 1 to 3.
パワーコントロールＣＰＵｌ４には第１の電源回路１５
を介してバッテリイ１１から動作用電源が常時供給され
ており、第３図のフローチャートに示すような処理動作
を実行している。The power control CPU14 includes a first power supply circuit 15.
Operating power is constantly supplied from the battery 11 via the battery 11, and processing operations as shown in the flowchart of FIG. 3 are executed.
即ち、表示部筐体２２が開いた状態にあり、これに伴い
ディスプレイ開閉スイッチｌ３がスイッチオフとなって
パワーコントロールＣＰＵｌ４の入カポー｝ＩＮ２が″
１″状態にあるときに、電源スイッチ１２が操作され、
パワーコントロールＣＰＵ１４の入力ポートＩＮ １が
“０”状態になると、人カポー｝ＩＮＩの状態が反転し
、入力ポートＩＮ ｌが“Ｏ”であれば“１”に、又、
“１”であれば“０”に切り替えられる（第３図ステッ
プ８２〜Ｓ４）。That is, the display housing 22 is in an open state, and accordingly, the display opening/closing switch l3 is turned off, and the input port }IN2 of the power control CPU l4 is turned off.
1'' state, the power switch 12 is operated,
When the input port IN1 of the power control CPU 14 becomes "0", the state of the input port INI is reversed, and if the input port IN1 is "O", it becomes "1", and
If it is "1", it is switched to "0" (steps 82 to S4 in FIG. 3).
この人力ポートＩＮ ｌの状態変化に伴って、出力ポー
ト（ＯｔｌＴｌ）の信号が反転し、更にこの出力ポート
（ ＯＵＴＩ）の信号反転に伴って装置内部の電源がオ
ン／オフ制御される。即ち、出力ポート（ＯＵＴＩ）の
信号が“０“から“１”に切り替わると、同信号により
スイッチ回路ｌ６がスイッチオン状態となって、バッテ
リイ１１の電源が第２の電源回．路１７に供給され、同
電源回路１７で生成した各種の動作電源が装置内部の各
コンポーネント（システム回路１８）に供給されて、装
置が電源オンによる動作モードとなる。又、出力ポート
（ ＯＵＴＩ）の信号が“１″から“０”に切り替わる
と、同信号によりスイッチ回路ｌ６がスイッチオフ状態
となって、バッテリイ１１の電源の第２の電源回路ｌ７
への供給が断たれ、装置が電源オフモードとなる。With this change in the state of the human input port IN1, the signal at the output port (OtlTl) is inverted, and the power inside the device is controlled on/off in accordance with the inversion of the signal at the output port (OUTI). That is, when the signal at the output port (OUTI) switches from "0" to "1", the signal turns on the switch circuit l6, and the power source of the battery l6 is switched on to the second power supply circuit. Various operating power supplies generated by the power supply circuit 17 are supplied to each component (system circuit 18) inside the device, and the device enters an operation mode when the power is turned on. Moreover, when the signal of the output port (OUTI) switches from "1" to "0", the switch circuit l6 is switched off due to the signal, and the second power supply circuit l7 of the power supply of the battery i11 is switched off.
The supply to the device is cut off and the device goes into power-off mode.
このように、表示部筐体２２が開いた状態にあるときは
、電源スイッチｌ２が操作される度に、装置内部が電源
オン／オフ状態を繰り返す。In this manner, when the display housing 22 is in the open state, the inside of the device repeats the power on/off state every time the power switch l2 is operated.
この際、電源スイッチｌ２を押圧操作した後、その押圧
操作が解除されると、これに伴いパヮーコントロールＣ
ＰＵｌ４の入力ポートＩＮ １が“Ｏ”から“１″に変
化して、再び電源スイッチｌ２の操作９
を検出する処理動作に戻る（第３図ステップＳ５，Ｓ２
，・・・）。At this time, after pressing the power switch l2, when the pressing operation is released, the power control C
The input port IN1 of PU14 changes from "O" to "1" and returns to the processing operation of detecting the operation 9 of the power switch I2 (steps S5 and S2 in FIG. 3).
,...).
又、表示部筐体２２が閉じた状態にあり、これに伴いデ
ィスプレイ開閉スイッチｌ３がスイッチオンとなってパ
ワーコントロールＣＰＵｌ４の入力ポートＩＮ２が“０
”状態にあるときは、電源スイッチ１２が操作されて、
パワーコントロールＣ Ｐ ｔＪ １４の入力ポートＩ
Ｎ １が“１”から＃０″に変化しても出力ポート（Ｏ
ｔｌＴｌ）の信号状態は変化せず、電源スイッチｌ２の
操作が無効となる（第３図ステップＳ３，Ｓ２，・・・
）。In addition, the display housing 22 is in a closed state, and accordingly, the display open/close switch l3 is turned on, and the input port IN2 of the power control CPU l4 is set to "0".
"When the power switch 12 is operated,
Power control CP tJ 14 input port I
Even if N1 changes from “1” to #0”, the output port (O
tlTl) signal state does not change, and the operation of the power switch l2 becomes invalid (steps S3, S2, . . . in FIG. 3).
).
このように、表示部筐体２２が閉じた状態にあるときは
、電源スイッチ１２の操作を無効化する構成としたこと
により、携行時等の非使用時に誤って電源スイッチ１２
が操作され、その後の使用時に於いて既に装置内のバッ
テリイ１１（内蔵電池）電源が消耗して使用できなくな
ってしまうという不都合を回避でき、機・器を常に正常
な状態に保つことができる。In this way, when the display unit housing 22 is in the closed state, the operation of the power switch 12 is disabled.
It is possible to avoid the inconvenience that the battery 11 (built-in battery) inside the device is already exhausted and becomes unusable during subsequent use after the device is operated, and the device can always be kept in a normal state.
尚、上記した実施例に於いては、パワーコント１０
ロールＣＰＵ１４の制御の下に装置内部の各コンポーネ
ント（システム回路１８）に動作用電源を供給制御する
構成を例にとったが、要は表示部筐体が閉じた状態にあ
るときに電源スイッチの操作を無効とし、又は内部電源
の供給を禁止する構成であればよい。又、電源スイッチ
１２、及びディスプレイ開閉スイッチｌ３の取り付け位
置、スイッチ構造（常開接点構造／常閉接点構造）等も
上記実施例に限定されるものではなく、要はスイッチの
操作状態、表示部筐体の開閉状態を判別できる信号を取
り出すことのできる構成であればよい。In the above-mentioned embodiment, a configuration was taken as an example in which operating power is supplied and controlled to each component (system circuit 18) inside the device under the control of the power control 10 and the roll CPU 14, but the main point is that the display Any configuration may be used as long as the operation of the power switch is disabled or the supply of internal power is prohibited when the unit housing is in the closed state. Furthermore, the installation positions and switch structures (normally open contact structure/normally closed contact structure) of the power switch 12 and the display open/close switch l3 are not limited to the above embodiments, and the key point is that the operating state of the switches and the display section Any configuration may be used as long as it can extract a signal that can determine whether the housing is opened or closed.
［発明の効果］
以上詳記したように本発明の電源制御装置によれば、内
部電源及び同電源を供給制御する電源スイッチを有し、
表示部筐体がキーボードを設けた本体上で所定の回動範
囲をもって開閉するラップトップタイプの電子機器に於
いて二上記表示部筐体が閉じた状態にあるとき、上記電
源スイッチの操作を無効化する電源制御手段を有してな
る構或としたことにより、携行時等の非使用時に誤っ１
１
て電源スイッチが操作され、その後の使用時に於いて既
に内蔵電池が消耗して使用できなくなってしまうという
不都合を回避でき、機器を常に正常な状態に保つことが
できる。[Effects of the Invention] As detailed above, the power control device of the present invention includes an internal power source and a power switch that controls the supply of the power source,
In a laptop-type electronic device where the display housing opens and closes within a predetermined rotation range on the main body equipped with a keyboard, when the display housing is in the closed state, the operation of the power switch is disabled. By having a power control means that allows
1. It is possible to avoid the inconvenience that the built-in battery is already exhausted and becomes unusable during subsequent use when the power switch is operated, and the device can always be kept in a normal state.
第１図は本発明の一実施例を示すブロック図、第２図は
上記実施例に於ける表示部筐体の開閉状態検出機構を構
成するディスプレイ開閉スイッチの配置例を示す図、第
３図は上記実施例に於けるパワーコントロールＣＰＵの
処理フローを示すフローチャートである。
１ｌ・・・バッテリイ、ｌ２・・・電源スイッチ、ｌ３
・・・ディスプレイ開閉スイッチ、１４・・・電源制御
用の１チップマイクロコンピュータ（パワーコントロー
ルＣＰＵ）、１５・・・第１の電源回路、１６・・・ス
イッチ回路、１７・・・第２の電源回路、Ｙ８・・・シ
ステム回路（装置内部の各コンポーネント）、２ｌ・・
・装置本体、２２・・・表示部筐体、ＩＮ ｌ， ＩＮ
２・・・入力ポート、ＯＬＩＴＩ・・・出力ポート。FIG. 1 is a block diagram showing one embodiment of the present invention, FIG. 2 is a diagram showing an example of the arrangement of the display opening/closing switch that constitutes the opening/closing state detection mechanism of the display housing in the above embodiment, and FIG. 3 is a flowchart showing the processing flow of the power control CPU in the above embodiment. 1l...Battery, l2...Power switch, l3
... Display open/close switch, 14... 1-chip microcomputer for power control (power control CPU), 15... First power supply circuit, 16... Switch circuit, 17... Second power supply Circuit, Y8... System circuit (each component inside the device), 2l...
・Device main body, 22...Display unit housing, IN l, IN
2...Input port, OLITI...Output port.
Claims (2)
スイッチと動作用の内部電源とを有し、表示部筐体がキ
ーボードを設けた本体上で所定の回動範囲をもって開閉
するラップトップタイプの電子機器に於いて、上記表示
部筐体が閉じた状態にあるとき、上記電源スイッチの操
作を無効化する手段を有してなる電源制御装置。(1). A laptop-type electronic device that has a power switch that turns on/off the operating power inside the device and an internal power source for operation, and whose display unit opens and closes within a predetermined rotation range on the main body equipped with a keyboard. A power supply control device comprising means for disabling operation of the power switch when the display housing is in a closed state.
の回動範囲をもって開閉する機構と、動作用の内部電源
と、電源スイッチとを有してなるラップトップタイプの
電子機器に於いて、上記表示部筐体が閉じた状態にある
ことを検出する表示部筐体開閉検出手段と、同手段の検
出信号と上記電源スイッチの操作信号とを受け、上記表
示部筐体開閉検出手段の検出信号が表示部筐体の開いた
状態を示しているとき、上記電源スイッチの操作に伴い
上記内部電源の内部回路への供給を制御し、上記表示部
筐体開閉検出手段の検出信号が表示部筐体の閉じた状態
を示しているとき、上記電源スイッチの操作を無効化す
る電源制御手段をもつマイクロプロセッサとを具備して
なることを特徴とする電源制御装置。(2). In a laptop-type electronic device, the display housing has a mechanism that opens and closes within a predetermined rotation range on the main body equipped with a keyboard, an internal power source for operation, and a power switch. A display unit housing opening/closing detection means detects that the display unit housing is in a closed state, and the detection signal of the display unit housing opening/closing detection unit receives a detection signal from the means and an operation signal of the power switch. When the display housing is in an open state, the supply of the internal power to the internal circuit is controlled in accordance with the operation of the power switch, and the detection signal of the display housing opening/closing detection means is output to the display housing. A power control device comprising: a microprocessor having power control means for disabling operation of the power switch when the power switch is in a closed state.
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1162228A JPH0327416A (en) | 1989-06-23 | 1989-06-23 | Power controller |
| TW080108347A TW197541B (en) | 1989-06-23 | 1990-06-22 | |
| DE69031251T DE69031251T2 (en) | 1989-06-23 | 1990-06-22 | Power control system and method for a computer |
| EP90306840A EP0404588B1 (en) | 1989-06-23 | 1990-06-22 | A power supply control system and method for a computer |
| DE69031744T DE69031744T2 (en) | 1989-06-23 | 1990-06-22 | Power control system for a computer |
| EP95201411A EP0670538B1 (en) | 1989-06-23 | 1990-06-22 | A power supply control system for a computer |
| KR1019900009327A KR930005799B1 (en) | 1989-06-23 | 1990-06-23 | Power supply control system for computer |
| US07/929,498 US5239495A (en) | 1989-06-23 | 1992-08-18 | Power supply control system for a portable computer |
| US08/111,400 US5383140A (en) | 1989-06-23 | 1993-08-25 | Power supply control system for a portable computer |
| US08/326,520 US5581772A (en) | 1989-06-23 | 1994-10-20 | Power supply control system for a portable computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1162228A JPH0327416A (en) | 1989-06-23 | 1989-06-23 | Power controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0327416A true JPH0327416A (en) | 1991-02-05 |
Family
ID=15750409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1162228A Pending JPH0327416A (en) | 1989-06-23 | 1989-06-23 | Power controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0327416A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004164204A (en) * | 2002-11-12 | 2004-06-10 | Toshiba Corp | Electronic device |
| JP2005165479A (en) * | 2003-11-28 | 2005-06-23 | Toshiba Corp | Electronic device and method for controlling power supply |
| JP2007173977A (en) * | 2005-12-19 | 2007-07-05 | Fujifilm Corp | Camera |
| JP2008165400A (en) * | 2006-12-27 | 2008-07-17 | Fujitsu Ltd | Information access device, information processor, information access program, information access method, and information processing method |
| USRE42114E1 (en) | 1994-12-26 | 2011-02-08 | Fujitsu Semiconductor Limited | Control system for charging batteries and electronic apparatus using same |
-
1989
- 1989-06-23 JP JP1162228A patent/JPH0327416A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE42114E1 (en) | 1994-12-26 | 2011-02-08 | Fujitsu Semiconductor Limited | Control system for charging batteries and electronic apparatus using same |
| USRE43911E1 (en) | 1994-12-26 | 2013-01-08 | Fujitsu Semiconductor Limited | Control system for charging batteries and electronic apparatus using same |
| JP2004164204A (en) * | 2002-11-12 | 2004-06-10 | Toshiba Corp | Electronic device |
| JP2005165479A (en) * | 2003-11-28 | 2005-06-23 | Toshiba Corp | Electronic device and method for controlling power supply |
| JP2007173977A (en) * | 2005-12-19 | 2007-07-05 | Fujifilm Corp | Camera |
| JP2008165400A (en) * | 2006-12-27 | 2008-07-17 | Fujitsu Ltd | Information access device, information processor, information access program, information access method, and information processing method |
| US8539219B2 (en) | 2006-12-27 | 2013-09-17 | Fujitsu Limited | Information access apparatus, program storage medium and method |
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