JPS58133124A - Power up clear circuit - Google Patents

Power up clear circuit

Info

Publication number
JPS58133124A
JPS58133124A JP57013071A JP1307182A JPS58133124A JP S58133124 A JPS58133124 A JP S58133124A JP 57013071 A JP57013071 A JP 57013071A JP 1307182 A JP1307182 A JP 1307182A JP S58133124 A JPS58133124 A JP S58133124A
Authority
JP
Japan
Prior art keywords
power
battery
capacitor
clear
circuit
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
JP57013071A
Other languages
Japanese (ja)
Inventor
櫻田 信晶
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP57013071A priority Critical patent/JPS58133124A/en
Publication of JPS58133124A publication Critical patent/JPS58133124A/en
Pending legal-status Critical Current

Links

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 本開明はパワーアップクリアー回路、1%にパワーアッ
プクリアー回路の娯動作防止装置に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a power-up clear circuit, and a device for preventing recreational operation of a power-up clear circuit.

従来電源投入時に電気懐置内のデジタル1路をリセット
する丸めのパワーアップクリアー信号を発生するパワー
アップクリアー回路は提案されている。
Conventionally, a power-up clear circuit has been proposed that generates a rounded power-up clear signal that resets the digital 1 path in an electric pocket when the power is turned on.

過常諌パワーアップクリアー回路は、電源の投入と同時
に充電されるキャパシタと、鋏キャパシタの充電電圧を
検出し、該充電電圧が所定値に達し九時にその出力状態
が反転する、例えdシ、ミツトトリガー回路を設け、該
シワミツトトリガー−路の出力信号をパワーアップクリ
アー信号としてデジタル1路に供給する様に構成されて
いるが、かかる構成における従来のパワーアップクリア
ー1路は電池の着脱が短時間に実行され九時には、電−
O堆り出しに応答して開始されるキャパシタの残留電荷
の放電が素早く行われない為に電池の着脱或いは電池飯
の−り九11閉が短時間に行われ友場合には電a装てん
時或いは電#jAIIi閉威時、mち本米パワーアツブ
クリアー18号に発生ずべき時に咳パワーアップクリア
ー16号を発生することができない欠凄かめった。
The abnormality power up clear circuit detects the charging voltage of the capacitor and the scissor capacitor that is charged at the same time as the power is turned on, and when the charging voltage reaches a predetermined value, the output state is reversed at 9 o'clock. A mitsuto trigger circuit is provided, and the output signal of the wrinkle mito trigger circuit is configured to be supplied to the digital 1 route as a power-up clear signal.However, in the conventional power-up clear 1 route with such a configuration, the battery cannot be attached or removed. It was executed in a short time and at 9 o'clock, the phone was turned on.
Because the discharge of the residual charge in the capacitor that starts in response to the removal of the battery does not occur quickly, the battery may be removed or removed in a short period of time. Or, when the power station AIIi was shut down, I was so disappointed that I was unable to generate Cough Power Up Clear No. 16 when it should have occurred on Power Up Clear No. 18.

そこでキャパシタの放電路に順方向にダイオード1飯枕
し、キャパシタの光電時開を短かくし、l5IJ:Aの
欠At除去せんとしたパワーアップクリアー回路が提案
されたが、かかる改良されたパワーアップクリアー回路
でおっても充分にその目的を達成するものでなかった。
Therefore, a power-up clear circuit was proposed in which a diode was placed in the forward direction in the discharge path of the capacitor to shorten the photoelectric period of the capacitor and remove the missing At of l5IJ:A. Even with a clear circuit, the purpose was not fully achieved.

本発明の目的は上記従来回路の欠点を解決した、#動作
の生じないパワーアップクリアー回路を提供せんとする
ものである。
SUMMARY OF THE INVENTION An object of the present invention is to provide a power-up clear circuit which eliminates the drawbacks of the conventional circuits and which does not cause the # operation.

以F図面′に参照して本発明の一実施例について#+述
する。
Hereinafter, one embodiment of the present invention will be described with reference to Drawing F'.

總1図は本発明【適用したカメラの外観図にして、ir
tカメラケース、2riカメラケース1にネジ止めされ
友電亀蓋で、該電池fi2の中心部には第2図に示す様
にカメラ駆動用電池のマイナス電極に当接する導電性の
突起が固着され、lたでの4都にはバネ8で下方に付勢
された接点6と当接し、骸接点6を押上ける絶縁性の突
起が固着される・6は電池112か取りはずされ死時接
点10に当接する接点、8はバネで、鉄バネ8の一端は
カメラケースIK同着され、他端は前述し九接点6の一
部に一部される・10#1I16 と共Kxイv*8W
x (@a−参M)を形成する接点で、不図示の絶縁部
材を介してカメラケースlに固着される・ M 3 allFi第1図示第1ラ示カメラ内れ九カメ
ラ側−装置の一部で、12は一端が悪2図示接点10K
JI絖され、他端がカメラケース1に接地されたパワー
アップクリアー回路形成用キャパシタ、14はキャパシ
タ12の充電路を形成するためにキャパシタ12に直列
接続され九^抵抗値を有する抵抗で、鋏抵抗14の一端
は電f#A4に接続された電線v00(不図示)の出力
端に接続される・16はキャパシタ12の出力端に接続
され九パワーアップクリアーー路形成用シ、ミy))リ
ガー囲路で、該トリガー−路16の出力端は前記111
11111装置内の各デジタル四リアー信号を供給する
様Km続されるo20はUMO8IOのマイクロプロセ
ッサ−等で構成され、水晶振動子22によってクロック
ツ(ルス信号等を出力する発振回路を有する制御回路で
、電気4から給電されて常時駆動されている。
Figure 1 is an external view of the camera to which the present invention is applied.
T camera case, 2ri A Yuden turtle cover is screwed to the camera case 1, and a conductive protrusion that comes into contact with the negative electrode of the camera drive battery is fixed to the center of the battery fi2, as shown in FIG. , An insulating protrusion is fixed to the four terminals on the left side, which abuts the contact 6 which is urged downward by the spring 8, and pushes up the contact 6. 6 is a dead contact when the battery 112 is removed. The contact that comes into contact with 10, 8 is a spring, one end of the iron spring 8 is attached to the camera case IK, and the other end is a part of the 9 contact 6 mentioned above. 8W
x (@a-Refer to M), and is fixed to the camera case l via an insulating member (not shown). In the part, 12 has one end bad 2 contact shown 10K
A power-up clear circuit forming capacitor with the other end grounded to the camera case 1; 14 is a resistor having a resistance value of 9^ connected in series to the capacitor 12 to form a charging path for the capacitor 12; One end of the resistor 14 is connected to the output end of the electric wire v00 (not shown) connected to the electric wire f#A4. 16 is connected to the output end of the capacitor 12. ), the output end of the trigger path 16 is connected to said 111
The o20, which is connected by Km to supply each digital quadrilinear signal in the 11111 device, is composed of a UMO8IO microprocessor, etc., and is a control circuit having an oscillation circuit that outputs a clock pulse signal etc. by a crystal oscillator 22. It is powered by electricity 4 and is constantly driven.

24は制御@絡20とは別の電気−路系で、電源スイツ
チ2111介して電池4に*続されるO つぎに上記構成にかかるカメ5TO動作、特にパワーア
ップクリアー回路8W1.12,14゜16の動作につ
いて説明する0 中ヤパシタ12に電荷が全く蓄積されていない初期状1
1において電池4が装着され、各電気回路20.24等
に給電が行なわれると、パワーアップクリアー回路中=
傘−のシーミツトトリガー回路16の出力端は−・イレ
ベル(以下HLと称す)とt、a、不図示のデジタル回
路のリセット端子にHLのパワーアップクリアー信号を
印加する。また電源投入と同時に抵抗14を介して充電
電流が流れるので、キャノ(シタ12は充電され、その
出力端電位は抵抗14の抵抗値並びにキャパシタ12の
容量に比例して徐々に上昇する・そしてキャノ(シタ1
2の充電電位がシーミツトトリガー回路16の閾値に達
すると、シーミツトトリガー回路16の出力端は1−I
Lからローレベル(以下LLと称す)に反転し、パワー
アップクリアー信号に消失して各電気回路における前記
デジタル−路の初期リセットは終了する。その後カメラ
においてはシャ、タレリーズボタンの押下に連動して露
出制御の為のシーケンスが電気回路20.24によって
公知の方法で集村される・尚キャノくシタ12の出力電
位は前記露出制御中並びにその後の露出銅一時において
も放電電流が小さい為にはげ電池4の出力電位に保持さ
れる。
Reference numeral 24 denotes an electrical circuit system separate from the control circuit 20, which is connected to the battery 4 via a power switch 2111.Next, the operation of the camera 5TO according to the above configuration, especially the power-up clear circuit 8W1.12, 14° Explaining the operation of 16 0 Initial state 1 where no charge is accumulated in the middle capacitor 12
When the battery 4 is installed in 1 and power is supplied to each electric circuit 20, 24, etc., during the power-up clear circuit =
The output terminal of the umbrella seam trigger circuit 16 applies a power-up clear signal of HL to the reset terminal of a digital circuit not shown. Furthermore, since a charging current flows through the resistor 14 at the same time as the power is turned on, the capacitor 12 is charged, and its output terminal potential gradually increases in proportion to the resistance value of the resistor 14 and the capacitance of the capacitor 12. (Sita 1
When the charging potential of 2 reaches the threshold of the seamit trigger circuit 16, the output terminal of the seamit trigger circuit 16 becomes 1-I.
The signal is inverted from L to low level (hereinafter referred to as LL) and disappears into a power-up clear signal, completing the initial reset of the digital path in each electrical circuit. After that, in the camera, the sequence for exposure control is set in a known manner by the electric circuit 20.24 in conjunction with the press of the shutter release button.The output potential of the shutter 12 is set during the exposure control. In addition, since the discharge current is small even during the subsequent exposed copper period, the output potential of the bald battery 4 is maintained.

かかる状況fC&いて、電池番の交換が素早く行われ九
場合、或いは不用意に電池j2が關かれ九場合における
動作について説明する・この*、を場合においては、電
池着2の−litに応じて突起2BC)押上げカが消失
するので、接A6riバ480付勢カにより接点10に
当価し、mM2イッテSWl#i閉成する。このためシ
In such a situation fC &, we will explain the operation in the case where the battery number is replaced quickly or when the battery j2 is carelessly connected. Since the force pushing up the protrusion 2BC) disappears, the contact A6ri bar 480 is applied to the contact 10 by the biasing force, and the mm2ite SWl#i is closed. For this reason.

jy)トリガー1路16の閾値以上の電位を保持してい
たパワーアップクリアー回@0キャパシタ12ri−X
イッテ8Wtによって短絡され、キャパシタ12の電葡
はスイッチswlを介して瞬時に放電し、その充電電位
はシ& ミF F )リカー−路16c)iil値以下
、卸ちほぼ零となる。
jy) Power-up clear time @0 capacitor 12ri-X that held the potential above the threshold of trigger 1 path 16
The capacitor 12 is short-circuited by the switch swl, and the voltage of the capacitor 12 is instantaneously discharged through the switch swl, and its charging potential becomes almost zero, which is less than the current value.

その後短時間のうちKm電池が交換され、再度電池82
が閉じられるか、又は不用意に電池★2が開けられ九場
合において、電池4の交換は行われず電池*2のみが閉
じられると、この時にはシワミツトトリガー−路16の
入力電位Fi lよjy苓であるので、シ&ミツトトリ
ガー回路16の出力端は電源投入、即ち電池ik2の閉
成に応答してLLからt−I L KbL転してパワー
アップクリアー信号を発生し、前記デジタル崗路管確実
K IJセットする。一方電池ik2が閉じられ心と、
電池11ii2上の突起2Hrriバネ8の押圧力に抗
して接点I6を押しよけ、スイッチSWl會開成するの
で、キャパシタ12ri電am 2 ノiじ、即ち電源
投入に応じて再度充電され、その充電レベルは徐々に上
昇する・そして前述の様に、その充電レベルがシー(y
))!jガー1路160閾値を越えると、シ、ミvトド
リガー回路16の出力電位FiHLからLLに反転し、
パワーアップクリアー信号は消失し、前記デジタル−路
OWJ期リセすト社完了し、各電気−路20゜24は正
常な初期状態から前述の様に露出制御動作を集貨する。
After that, the Km battery was replaced for a short time, and the battery 82 was replaced again.
If the battery *2 is closed or the battery *2 is opened carelessly, and only the battery *2 is closed without replacing the battery 4, at this time the input potential of the wrinkle trigger path 16 will be Therefore, the output terminal of the shutter trigger circuit 16 changes from LL to t-I L KbL in response to power-on, that is, the closing of the battery ik2, and generates a power-up clear signal, and the output terminal of the digital trigger circuit 16 outputs a power-up clear signal. Pipe surety K IJ set. On the other hand, the battery ik2 is closed and the heart
The contact I6 is pushed aside against the pressing force of the protrusion 2Hrri spring 8 on the battery 11ii2, and the switch SW1 is opened, so that the capacitor 12ri is charged again when the power is turned on, and its charging is stopped. The level gradually increases and, as mentioned above, the charge level
))! When the j-gar 1-path 160 threshold is exceeded, the output potential of the ci, mi-v trigger circuit 16 is reversed from FiHL to LL,
The power-up clear signal disappears, the digital path OWJ period reset is completed, and each electrical path 20-24 resumes exposure control operation as described above from its normal initial state.

第4図は本発1j1o他の実施例の要部概略−で、鋏図
は@3図示ススイッチW1を電池4自身によりて開閉す
る様にしたものである。咳第4図示夷IIIA例にあっ
ては主としてスイッチ5w1o構成が第ト13@示jI
I実施例と異なるだけであるので、該スイッチ5w1o
構成のみを詳述し、他の部分の構成並びKJIE4図示
カメラの動作については省略する・ 第4図において、6ム、 6B、 IOA、 IOB 
fi xイッテSWI (Ji3−参j[)を構成する
部材で、6人はカメラケースlの一部に固着され、かつ
電a4が装填されていない時に1よスイッチ5Wlt閉
成する4IIに金^性バネlOムと接触し、また電池4
が電池ボックスに装填さ扛た時には電池4によりて右方
向に押されてバネ10ムから離れる金属性のバネ、6B
はバネ6ムに固着され九杷縁性の突起、IOBはバネ6
人とバネlOAとの電気的接触を避ける為にバネ6Aと
バネ10人との間に介挿さt′した絶縁部材である。
FIG. 4 is a schematic diagram of the main parts of another embodiment of the present invention, and the scissor diagram shows that the switch W1 shown in the figure is opened and closed by the battery 4 itself. In the example IIIA shown in Figure 4, the switch 5w1o configuration is mainly the configuration shown in Figure 13.
Since the only difference from the I embodiment is that the switch 5w1o
Only the configuration will be described in detail, and the configuration of other parts and the operation of the KJIE4 illustrated camera will be omitted. In Figure 4, 6mm, 6B, IOA, IOB
It is a component that makes up the SWI (Ji3-J[), and the 6 members are fixed to a part of the camera case L, and the 4II that closes the switch 5Wlt when the A4 is not loaded is gold^ contact with the spring lOm, and the battery 4
When the battery is loaded into the battery box, the metal spring 6B is pushed to the right by the battery 4 and separates from the spring 10m.
is fixed to spring 6 and has a nine-lobe edge protrusion, IOB is fixed to spring 6
This is an insulating member t' inserted between the spring 6A and the spring 10 to avoid electrical contact between the person and the spring 1OA.

第4図示カメラにおいて、キャパシタ12の光電池圧が
7□ミツトトリガ一回路16の閾値より低下することが
ない4!i!短時間のうちに電池交快が素早く打われ九
としても、電池4の抜き取りWCよってバネ6ムがバネ
IOAに接触し、キャパシタ12の電萄が一時に放電し
て、その出力レベルが′にに零となるので、電池4の交
換のに%にパワ−1ツグクリアー回路はノンワーア、ツ
クリアー信号を発生する◇ 以上の様に本晃tJ4によれは、電池交Isが素早く行
われ良としてもパワーアップクリアー−路のキャパシタ
は電池交換時にリセットされるので、本来パワーアップ
クリアー信号を発生すべ龜時点、卸も電池交換時勢の時
点に確実にI(シーアップクリアー信号を発生すること
ができるものである・
In the camera shown in the fourth figure, the photocell pressure of the capacitor 12 does not fall below the threshold value of the 7□mitt trigger circuit 16! i! Even if the battery is replaced quickly within a short period of time, the spring 6 will come into contact with the spring IOA due to the removal of the battery 4, and the capacitor 12 will be discharged at once, and its output level will become ''. Therefore, when battery 4 is replaced, the power-1 toggle clear circuit generates a non-war, clear signal. Since the up-clear capacitor is reset when the battery is replaced, the wholesaler must be able to reliably generate the I (see-up clear signal) at the time when the power-up clear signal should be generated. be·

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

JI11図は本発明を適用し九カメフの外111図、a
Iz−は第1vA示カメラの一部分の断面図、第3図は
m1図示カメラの電気囲路の一部分の回路接続図、  
           71、jg4#AFi本発明の
他の実施例のlI部概略#jA/ある・ 図において、8W1−・・短絡スイ、テη寸 縮訃
JI figure 11 is the outside figure 111 of Nine Kamefu applying the present invention, a
Iz- is a cross-sectional view of a part of the 1st vA camera, FIG. 3 is a circuit connection diagram of a part of the electrical enclosure of the m1 camera,
71, jg4#AFi lI section outline #jA/of other embodiments of the present invention In the figure, 8W1-... short circuit switch, Te η size reduction

Claims (1)

【特許請求の範囲】 +1)  キャパシタと、皺中ヤパシタの出力電圧が所
定値に達した時出力状態が反転するスイッチング手段と
を有し、咳スイッチング手段から電気−路のためのパワ
ーアップクリアー信号を発生するパワーアップクリアー
−路において、前記電気&gljl!用電池の着脱又は
電池蓋の開閉に連動して前記キャパシタの電#を瞬時に
リセットする手Iiiを設けたことを特徴とするパワー
アップクリアー回路。 (27*配すセット手Rは前記キャパシタKm列黴絖さ
れるスイッチング手段で形成されることt%黴とする脅
許錆求の軛囲第(1)9it紀載のパワーアップクリア
ー回路。
[Claims] +1) A capacitor and a switching means whose output state is reversed when the output voltage of the wrinkle capacitor reaches a predetermined value, and a power-up clear signal for the electrical path is generated from the cough switching means. Power-up clear-way to generate electricity &gljl! A power-up clear circuit characterized in that a hand (iii) is provided for instantaneously resetting the voltage of the capacitor in conjunction with attachment/detachment of a battery or opening/closing of a battery cover. (27*The set hand R is formed by the switching means which is connected to the capacitor Km column.The power-up clear circuit described in the 9th edition (1) 9th Edition.
JP57013071A 1982-01-29 1982-01-29 Power up clear circuit Pending JPS58133124A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57013071A JPS58133124A (en) 1982-01-29 1982-01-29 Power up clear circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57013071A JPS58133124A (en) 1982-01-29 1982-01-29 Power up clear circuit

Publications (1)

Publication Number Publication Date
JPS58133124A true JPS58133124A (en) 1983-08-08

Family

ID=11822913

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57013071A Pending JPS58133124A (en) 1982-01-29 1982-01-29 Power up clear circuit

Country Status (1)

Country Link
JP (1) JPS58133124A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62191937A (en) * 1986-02-18 1987-08-22 Sharp Corp Prevention system for runaway of microcomputer
JPS62176835U (en) * 1987-03-02 1987-11-10
JPH02178430A (en) * 1988-12-29 1990-07-11 Toto Ltd Dry cell case for electrical automatic cock
US5032857A (en) * 1988-05-16 1991-07-16 Minolta Camera Kabushiki Kaisha Camera with card accommodating device
US5070234A (en) * 1988-05-16 1991-12-03 Minolta Camera Kabushiki Kaisha Connecting device for IC card

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62191937A (en) * 1986-02-18 1987-08-22 Sharp Corp Prevention system for runaway of microcomputer
JPS62176835U (en) * 1987-03-02 1987-11-10
JPH058588Y2 (en) * 1987-03-02 1993-03-03
US5032857A (en) * 1988-05-16 1991-07-16 Minolta Camera Kabushiki Kaisha Camera with card accommodating device
US5070234A (en) * 1988-05-16 1991-12-03 Minolta Camera Kabushiki Kaisha Connecting device for IC card
US5081482A (en) * 1988-05-16 1992-01-14 Minolta Camera Kabushiki Kaisha Ic card and camera for use therewith
JPH02178430A (en) * 1988-12-29 1990-07-11 Toto Ltd Dry cell case for electrical automatic cock

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