JPH03171216A - Personal computer - Google Patents

Personal computer

Info

Publication number
JPH03171216A
JPH03171216A JP1309144A JP30914489A JPH03171216A JP H03171216 A JPH03171216 A JP H03171216A JP 1309144 A JP1309144 A JP 1309144A JP 30914489 A JP30914489 A JP 30914489A JP H03171216 A JPH03171216 A JP H03171216A
Authority
JP
Japan
Prior art keywords
display device
power
state
power source
loading
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
JP1309144A
Other languages
Japanese (ja)
Inventor
Toshikazu Konno
俊和 今野
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 JP1309144A priority Critical patent/JPH03171216A/en
Priority to EP19900116517 priority patent/EP0415376A3/en
Priority to KR1019900013498A priority patent/KR930012128B1/en
Publication of JPH03171216A publication Critical patent/JPH03171216A/en
Priority to US08/173,877 priority patent/US5467469A/en
Priority to US08/400,827 priority patent/US5539876A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To strengthen safety at the time of loading/unloading a display device and the protection of a system device by storing information on a system state at a time when the display device is unloaded, interrupting a power source and starting a system in a state where the power source is interrupted at the time of inserting the power source again. CONSTITUTION:When the display device 2 is loaded/unloaded while the system is being operated, a control circuit 3 informs CPU 1 of the loading/unloading information of the display device. CPU 1 stores information of the system state in a memory with backup 4, transmits a control signal to a power source device 5 after the termination of a storage operation, and the power source device 5 interrupts power supplied to the system and the display device 2. When the power source device 5 is inputted after the loading/unloading operation of the display device 2 is completed, CPU 1 reads information on the system state when the display device 2 is loaded/unloaded from the memory 4 and restarts the system in the same state as the loading/unloading time of the display device 2. Thus, safety at the time of loading/unloading the display device and the protection of the system device are strengthened.

Description

【発明の詳細な説明】 [発明の目的] (産業上の利用分野) この発明は、プラズマディスプレイ又はLCD等のフラ
ットパネルを表示デバイスとして持ち、この表示デバイ
スがコネクタを介し本体と着脱可能であるパーソナルコ
ンピュータに関する。
[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) This invention has a flat panel such as a plasma display or LCD as a display device, and this display device is detachable from the main body via a connector. Regarding personal computers.

(従来の技術) パーソナルコンピュータの分野では従来のディスクトッ
プタイプのものに代わり、小形、軽量、携帯に便利なラ
ップトップと称されるタイプが台頭し、頻繁に使用され
るようになった。この種パーソナルコンピュータは、プ
ラズマディスプレイ又はLCD等のフラットパネルディ
スプレイを表示デバイスとして持ち、この表示デバイス
が着脱可能な、いわゆるデタッチャブル表示デIくイス
を備えたパーソナルコンピュータシステムでは、電源が
供給された状態にて表示デバイスが外された場合、表示
デバイスが外れたことを認識する制御信号を電源及び表
示制御回路に送ることにより、着脱部のコネクタにかか
る電圧及び表示制御信号を遮断する等の保護回路を具備
し、着脱時の安全及びシステムの動作を保っている。
(Prior Art) In the field of personal computers, the conventional desktop type has been replaced by a type called a laptop, which is small, lightweight, and convenient to carry, and has come to be used frequently. This type of personal computer has a flat panel display such as a plasma display or LCD as a display device, and in a personal computer system equipped with a so-called detachable display device in which this display device can be attached or detached, the display device is in a state where power is supplied. When the display device is removed at the time, the protection circuit cuts off the voltage and display control signal applied to the connector of the detachable part by sending a control signal that recognizes that the display device has been removed to the power supply and display control circuit. This ensures safety during attachment/detachment and maintains system operation.

(発明が解決しようとする課題) 従来は上述したように、電源投入状態にて表示デバイス
を外す場合に、表示デバイスが外れたことを認識する制
御信号を電源及び表示制御回青に送ることにより、着脱
部のコネクタにかかる社圧及び表示制御信号を遮断する
等の保護回路を釦える必要−があり、着脱時の安全及び
システムの即作を保っていたが、外す場合にシステム動
作が偶たれていると、逆にシステム動作が保たれている
状態にて表示デバイスを神人する可能性があり、この場
合、表示デバイスが外れたことを認識する制御信号が逆
論理となり、着脱部のコネクタに加圧及び表示制御信号
を出力することになる。これにより11p人した表示デ
バイスに急激に電圧をかけることになり、表示デバイス
のインタフェース回路を破損する恐れがあるという問題
があった。
(Problem to be Solved by the Invention) Conventionally, as described above, when a display device is removed while the power is on, a control signal is sent to the power supply and display control circuit to recognize that the display device has been removed. However, it was necessary to switch on a protective circuit that shuts off the pressure and display control signals applied to the connector at the attachment/detachment part to ensure safety during attachment/detachment and to maintain the system's immediate operation. If the display device is disconnected, there is a possibility that the display device will be disabled while the system is still operating.In this case, the control signal that recognizes that the display device has come off will be reverse logic, and the detachable part will be disconnected. Pressure and display control signals will be output to the connector. This causes a problem in that a voltage is suddenly applied to the display device with 11p voltage, which may damage the interface circuit of the display device.

この発明は上記iJl情に鑑みてなされたものであり、
表示デバイスを着脱する際に強制的に電源及びシステム
を遮断し、且つ着脱時のシステム状態をバックアップ付
きメモリに記憶させ再度?ti源投入時に表示デバイス
を着脱したD!iと同じ状態にてシステム起動すること
により、着脱時の安全性及びシステムデバイスの保護を
強化するパーソナルコンピュータを提供することを目的
とする。
This invention was made in view of the above iJl situation,
Forcibly shut off the power and system when attaching or detaching the display device, and store the system status at the time of attaching or detaching in a memory with backup? D when the display device was attached and detached when the ti source was turned on! An object of the present invention is to provide a personal computer that enhances safety during attachment and detachment and protection of system devices by starting the system in the same state as i.

【発明の構成] (課題を解決するための手段) 本発明のパーソナルコンピュータは、本体と、本体とは
コネクタを介し着脱自在に実装される表示デバイスと、
システム内部にて生成される制御信号により出力電圧を
制御可能な電源装置と、電源遮断時のシステム状態を保
存可能なバックアップ付きのメモリから成り、ilR投
入状態にて表示デバイスを外した場合に、その時のシス
テム状態の情報をバックアップ付きメモリに記憶させた
後に電源出力を遮断し、再度電源を投入すると電源遮断
時の状態にてシステム起動を行うことを特徴とする。
[Structure of the Invention] (Means for Solving the Problems) A personal computer of the present invention includes a main body, a display device detachably mounted on the main body via a connector,
The system consists of a power supply device that can control the output voltage using control signals generated inside the system, and a memory with a backup that can save the system state when the power is turned off. The system is characterized in that after storing information on the system state at that time in a memory with backup, the power output is cut off, and when the power is turned on again, the system is started in the state at the time the power was cut off.

(作 用) 表示デバイスの着脱は必ずts源及びシステムが動作し
ていない状態で行い、また、表示デバイスを着脱時に単
に電源及びシステムを遮断すると、システムを強制的に
遮断するため、利用者に弊害を与える可能性がある。従
って本発明では上述した構成にて、着脱時のシステム状
態をバックアップ付きメモリに記憶させてからシステム
電源を遮断し、再度電源を投入すると表示デバイス着脱
時のシステム状態をバックアップ付きメモリから読み出
すことにより、表示デバイス着脱時と同様のシステム状
態にて再起動可能とすることを特徴とする。このことに
より、電源投入状態のまま表示デバイスを着脱しても表
示デバイス内制御回路、システム内表示回路、及び稼働
中のシステム状態の破lmを防止することが可能となる
(Function) Be sure to attach or detach the display device when the TS source and system are not operating. Also, if you simply shut off the power supply and system when attaching or detaching the display device, the system will be forcibly shut off, which may cause problems for the user. It may cause harm. Therefore, in the present invention, with the above-described configuration, the system state when the display device is attached or detached is stored in the memory with backup, the system power is shut off, and when the power is turned on again, the system state when the display device is attached or detached is read out from the memory with backup. , the system can be restarted in the same system state as when the display device is attached or detached. This makes it possible to prevent damage to the control circuit within the display device, the display circuit within the system, and the state of the system during operation even if the display device is attached or detached while the power is on.

(実施例) 以下、図面を使用して本発明実施例について詳細に説明
する。第1図は本発明の実施例を示すブロック図である
。図において、符号1はCPUであり、システム全体を
制御する。符号2は表示デバイスであり、図示せぬデタ
ッチャブル機構により、システムより任意に着脱が可能
である。符号3は制御回路であり、表示デバイスの着脱
情報をCPUに知らせる信号を生成する。符号4は、バ
ックアップ付きメモリであり、表示デバイス着脱時のシ
ステム状態を記憶する。符号5は、電源装置であり、シ
ステムに必要な電源を供給し、表示デバイス着脱時に強
制的に出力電源を遮断する機能を持つ1チップマイコン
内蔵のインテリジェント電源である。
(Example) Hereinafter, an example of the present invention will be described in detail using the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention. In the figure, reference numeral 1 is a CPU, which controls the entire system. Reference numeral 2 denotes a display device, which can be attached or detached from the system as desired by a detachable mechanism (not shown). Reference numeral 3 denotes a control circuit that generates a signal that notifies the CPU of information on attaching and detaching the display device. Reference numeral 4 denotes a memory with backup, which stores the system state when the display device is attached or detached. Reference numeral 5 denotes a power supply, which is an intelligent power supply with a built-in one-chip microcomputer that supplies the power necessary for the system and has the function of forcibly cutting off the output power when a display device is attached or detached.

以下、本発明実施例の動作について詳細に説明する。電
源装15がシステムに電源を供給し、システムが稼働中
に、表示デバイス2を着脱すると、tsm回路3は表示
デバイスの着脱情報をCPUIに知らせる。この情報を
受け取ったCPUIは、システム状態の情報をバックア
ップ付きメモリ4に記憶させ、記憶動作終了後ら電源装
置5に出力電源の遮断を行うよう制御信号を送る。この
制御信号を認識した電源装fif5は、システム及び表
示デバイスに供給する電源を遮断する。表示デバイスの
着脱動作完了後、再度電源装置5を投入すると、CPU
Iはバックアップ付きメモリ4より表示デバイス2着脱
時のシステム状態の情報を読み出し、表示デバイス2着
脱時と同じ状態にてシステムの再起動を行う。
Hereinafter, the operation of the embodiment of the present invention will be explained in detail. When the power supply unit 15 supplies power to the system and the display device 2 is attached or detached while the system is in operation, the tsm circuit 3 notifies the CPUI of display device attachment/detachment information. Having received this information, the CPUI stores the system status information in the backup memory 4, and sends a control signal to the power supply device 5 to cut off the output power after the storage operation is completed. The power supply device fif5 recognizes this control signal and cuts off the power supplied to the system and display device. After the display device attachment/detachment operation is completed, when the power supply unit 5 is turned on again, the CPU
I reads information on the system state when the display device 2 is attached/detached from the backup memory 4, and restarts the system in the same state as when the display device 2 is attached/detached.

本発明は上述したように、電源投入状態にて表示デバイ
スをシステムから着脱する際にCPUによる高速制御を
利mし、システム状態をバックメモリに記憶してから電
源出力を強制的に遮断することにより、表示デバイス及
びシステム内のインタフェース回路の確実な保護手段を
堤供し、しかも、電源再投入時に表示デバイス着脱時と
同じ状態にてシステム再起動を可能とすることがポイン
トである。これによって更に安全性及び実用性に富んだ
パーソナルコンピュータシステムを実現することが可能
となる。
As described above, the present invention takes advantage of high-speed control by the CPU when attaching or detaching a display device from the system while the power is on, stores the system status in the back memory, and then forcibly cuts off the power output. Therefore, the key point is to provide a reliable means of protecting the display device and the interface circuit in the system, and also to enable the system to be restarted in the same state as when the display device was attached or detached when the power is turned on again. This makes it possible to realize a personal computer system that is even safer and more practical.

[発明の効果] 以上説明のように、表示デバイスを着脱する際に強制的
に電源及びシステムを遮断し、かつ着脱特のシステム状
態をバックアップ付きメモリに記憶させ、再度電源投入
時に表示デバイスを着脱した時と同じ状態にてシステム
起動することにより、着脱時の安全性及びシステムデバ
イスの保護が強化される。即ち、電源投入状態での表示
デバイス着脱時に、表示デバイス内制御回路、システム
内表示回路、及び稼働中のシステム状態の破損を防止す
ることが可能となる。
[Effects of the Invention] As explained above, when a display device is attached or detached, the power supply and system are forcibly cut off, the system status at the time of attachment or detachment is stored in a memory with backup, and the display device is attached or detached when the power is turned on again. By starting the system in the same state as when it was installed, safety during installation and removal and protection of system devices is enhanced. That is, when the display device is attached or detached while the power is on, it is possible to prevent damage to the control circuit within the display device, the display circuit within the system, and the state of the system during operation.

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

第1図は本発明の実施例を示すブロック図である。 1・・・CPU,2・・・表示デバイス、3・・・制御
回路、4・・・バックアップ付きメモリ、5・・・電源
装置。
FIG. 1 is a block diagram showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... CPU, 2... Display device, 3... Control circuit, 4... Memory with backup, 5... Power supply device.

Claims (1)

【特許請求の範囲】[Claims] 本体と、この本体にコネクタを介して着脱自在に実装さ
れる表示デバイスと、システム内部にて生成される制御
信号により出力電圧を制御する電源装置と、電源遮断時
のシステム状態を保存するバックアップ付きのメモリと
を具備し、電源投入状態にて表示デバイスを外したとき
、そのシステム状態情報を上記バックアップ付きメモリ
に記憶させた後に電源出力を遮断し、再度電源を投入し
た際電源遮断直前の状態にてシステム起動を行うことを
特徴とするパーソナルコンピュータ。
A main body, a display device that is detachably mounted on the main body via a connector, a power supply device that controls the output voltage using control signals generated inside the system, and a backup that saves the system state when the power is cut off. When the display device is removed while the power is on, the system status information is stored in the memory with backup, then the power output is cut off, and when the power is turned on again, the state immediately before the power was cut off is maintained. A personal computer characterized in that the system is booted at the computer.
JP1309144A 1989-08-28 1989-11-30 Personal computer Pending JPH03171216A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP1309144A JPH03171216A (en) 1989-11-30 1989-11-30 Personal computer
EP19900116517 EP0415376A3 (en) 1989-08-28 1990-08-28 Computer unit with a resume function
KR1019900013498A KR930012128B1 (en) 1989-08-28 1990-08-28 Personal computer
US08/173,877 US5467469A (en) 1989-08-28 1993-12-27 Computer unit with a resume function
US08/400,827 US5539876A (en) 1989-08-28 1995-03-08 Computer unit with a resume function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1309144A JPH03171216A (en) 1989-11-30 1989-11-30 Personal computer

Publications (1)

Publication Number Publication Date
JPH03171216A true JPH03171216A (en) 1991-07-24

Family

ID=17989439

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1309144A Pending JPH03171216A (en) 1989-08-28 1989-11-30 Personal computer

Country Status (1)

Country Link
JP (1) JPH03171216A (en)

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