JPH01284078A - Image pickup device - Google Patents

Image pickup device

Info

Publication number
JPH01284078A
JPH01284078A JP63112348A JP11234888A JPH01284078A JP H01284078 A JPH01284078 A JP H01284078A JP 63112348 A JP63112348 A JP 63112348A JP 11234888 A JP11234888 A JP 11234888A JP H01284078 A JPH01284078 A JP H01284078A
Authority
JP
Japan
Prior art keywords
circuit
power
data
level
control
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.)
Granted
Application number
JP63112348A
Other languages
Japanese (ja)
Other versions
JP2670080B2 (en
Inventor
Masaki Okada
雅樹 岡田
Ryosuke Miyamoto
了介 宮本
Nobuo Fukushima
信男 福島
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 JP63112348A priority Critical patent/JP2670080B2/en
Publication of JPH01284078A publication Critical patent/JPH01284078A/en
Application granted granted Critical
Publication of JP2670080B2 publication Critical patent/JP2670080B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To preclude the possibility of power voltage drop and to avoid malfunction at write by providing a control means limiting the power consumption of the entire image pickup device to a required minimum value in case of writing a data into a storage means. CONSTITUTION:The user depresses a SW 1 for recording preparation command to turn it on. When the user further depresses the SW 1 to turn on a SW 2 for pickup command, n detection signal E4 of a detection circuit 16 goes to an L level, a control section 11 brings control signals E1, E2 to an L level and power voltages V1, V2 to a CCD 3 and a picture processing circuit 4 from the power unit 13. Then a time of nearly 100ms is awaited, the control section 11 brings the control signal E3 to an L level to supply the power V3 from the power unit 13 to a MOD/MEC circuit 5 taking a recording timing to inhibit charging of a strobo 14 and the circuit is awaited for 50ms. A shutter iris mechanism is moved during that time to apply pickup by strobo flash.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明はデータ書き込み用のメモリを有する撮像装置に
関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an imaging device having a memory for writing data.

〔従来技術〕[Prior art]

磁気ディスクやICメモリ等に静止画像等を記録する電
子式カメラが近年提供されている。このような撮像装置
において撮影に関する種々のデータを書き込みするため
のメモリとして、リチウム電池のような補助電源によっ
てバックアップされたRAM(ランダムアクセスメモリ
)やそのようなバックアップの必要のないEEPROM
 (電気的書き換え可能読み出し専用メモリ)等が用い
られていた。
2. Description of the Related Art Electronic cameras that record still images and the like on magnetic disks, IC memories, and the like have been provided in recent years. In such an imaging device, a RAM (Random Access Memory) backed up by an auxiliary power source such as a lithium battery or an EEPROM that does not require such backup is used as a memory for writing various data related to shooting.
(Electrically rewritable read-only memory) etc. were used.

[発明が解決しようとする課D] しかしながら、上述のような従来例において、電池でバ
ックアップされたRAMを用いた場合は、バックアップ
用リチウム電池等の補助τ源が切れた場合に、RAMに
記憶したデータが消えてしまうという欠点があった。一
方、EEPIIOMを用いる場合にはバックアップ用の
電源の必要がないのでこのような問題点は生じないが、
EEPROMに書き込みを行っている時に、電源電圧の
降下が起こると、誤動作を起こし、EEFROMに書き
込まれている必要なデータが消去されたり、誤ったデー
タを書き込んだりするという欠点があった。
[Problem D to be solved by the invention] However, in the conventional example described above, when a battery-backed RAM is used, when the auxiliary τ source such as a backup lithium battery goes out, the memory in the RAM is The disadvantage was that the data that was created would be lost. On the other hand, when using EEPIIOM, there is no need for a backup power source, so this problem does not occur.
If a drop in the power supply voltage occurs while writing to the EEPROM, a malfunction may occur, and necessary data written in the EEFROM may be erased or incorrect data may be written.

本発明の目的は、上記の欠点を解消すへく、書き込み用
メモリへデータの書き込みをするときには全体の電力消
費量を可能な限り小さくして、書き込み中の電圧降下の
発生を防止し、データの消去や誤ったデータの書き込み
を無くした撮像装置を提供することにある。
In order to eliminate the above-mentioned drawbacks, an object of the present invention is to reduce the overall power consumption as much as possible when writing data to a write memory, prevent the occurrence of voltage drop during writing, and write data to a write memory. An object of the present invention is to provide an imaging device that eliminates erasing of data and writing of erroneous data.

[課題を解決するだめの手段] かかる目的を達成するために、本発明は、撮影に関する
データを書き込みするための書き込み用記憶手段を有す
る撮像装置において、記憶手段にデータを書き込みする
際に、撮像装置全体の消費電力を必要最小限に制限する
制御手段を具備したことを特徴とする。
[Means for Solving the Problems] In order to achieve the above object, the present invention provides an imaging apparatus having a writing storage means for writing data related to imaging, in which when writing data to the storage means, the imaging device The present invention is characterized in that it includes a control means for limiting the power consumption of the entire device to the necessary minimum.

[作 用] 本発明は、上記構成により、書き込み用メモリにデータ
を書き込む際に、大電流を消費するモータやストロボ充
電等の負荷への通電を禁止して撮像装置全体の電力消費
量を可能な限り小さくするようにしたので、書き込み動
作中の電圧降下の危険性は大幅に解消され、誤動作の防
止を行うことかできる。
[Function] With the above configuration, the present invention can reduce the power consumption of the entire imaging device by prohibiting energization to loads such as motors and strobe charging that consume large currents when writing data to the write memory. Since it is made as small as possible, the risk of voltage drop during write operation is largely eliminated, and malfunctions can be prevented.

〔実施例) 以下、図面を参照して本発明の実施例を詳細に説明する
[Embodiments] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

第1図は本発明の実施例の電子式スチルカメラの回路構
成を示す。本図において、1は被写体を結像するレンズ
、2はシャッター絞り機構、3はレンズlにより結像さ
れた画像(静止画)を電気的な画像信号に変換する固体
撮像素子としてのCCO<電荷結合素子)、4はCCD
 3から出力する画像信号をデジタル化し、各種補正等
を施す画像処理回路(プロセス回路)、5は画像処理回
路4から出力する画像信号の記録タイミングをとるMO
D/REC回路である。
FIG. 1 shows the circuit configuration of an electronic still camera according to an embodiment of the present invention. In this figure, 1 is a lens that forms an image of the subject, 2 is a shutter diaphragm mechanism, and 3 is a solid-state image sensor that converts the image (still image) formed by lens l into an electrical image signal. coupling element), 4 is CCD
3 is an image processing circuit (process circuit) that digitizes the image signal outputted from the image processing circuit 4 and performs various corrections, etc.; 5 is an MO that determines the recording timing of the image signal outputted from the image processing circuit 4;
This is a D/REC circuit.

6はMOD/RE(:回路5の出力信号が印加されるヘ
ットプランジャ、7は磁気ディスク8の半径方向にヘッ
ドプランジャ6を移動させるステップモータ、9は磁気
ディスク8を所定回転で高速回転するディスクモータ、
IOはステップモータ7、ヘットプランジャ6およびデ
ィスクモータ9を駆動するモータ駆動回路(トライバ)
である。記録時には、回転する磁気ディスク8のトラッ
ク上にヘッドプランジャ6を介して画像信号が記録され
る。
6 is a head plunger to which the output signal of the MOD/RE circuit 5 is applied; 7 is a step motor that moves the head plunger 6 in the radial direction of the magnetic disk 8; and 9 is a disk that rotates the magnetic disk 8 at a predetermined high speed. motor,
IO is a motor drive circuit (driver) that drives the step motor 7, head plunger 6, and disk motor 9.
It is. During recording, image signals are recorded onto the tracks of the rotating magnetic disk 8 via the head plunger 6.

11は装置全体の制御を所定の制御手順に従って実行す
る制御部であり、マイクロコンピュータ(μmcom)
や、第2図に示すような制御手順を格納したROM (
リードオンリメモリ)、およびデータ書き込み用のEE
PROM12等を内蔵している。
11 is a control unit that controls the entire device according to a predetermined control procedure, and is a microcomputer (μmcom).
and a ROM (
read-only memory), and EE for data writing
It has built-in PROM12 etc.

13は電源ユニットであり、制御部11から人力する制
御18号E、、 E2. E3の出力レベルに応じて供
給電源V 、 、v2.V3ノON、OFFを行う。1
4は電源ユニット13およびバッテリ15と接続するス
トロボであり、制御部11からの制御信号により発光す
る。16は手動スイッチ(例えば、2段階式レリーズボ
タン)SWI、SW2のON、OFF状態を検出して、
電源ユニット13と制御部11へ検出信号を出力する検
出回路であり、リチュウム電池17を電源としている。
Reference numeral 13 denotes a power supply unit, and control numbers 18 E, E2. The supply power V, , v2 . Turn V3 ON and OFF. 1
A strobe 4 is connected to the power supply unit 13 and battery 15, and emits light in response to a control signal from the control section 11. 16 detects the ON and OFF states of manual switches (for example, two-step release button) SWI and SW2,
This is a detection circuit that outputs a detection signal to the power supply unit 13 and the control section 11, and uses a lithium battery 17 as a power source.

次に、第2図のフローチャートと、第3図のタイミング
チャートを参照して本発明実施例の動作を説明する。
Next, the operation of the embodiment of the present invention will be described with reference to the flowchart in FIG. 2 and the timing chart in FIG.

使用者が記録準備指示用のSWIを押し下げてONにす
ると(ステップSl) 、第3図に示すように、検出回
路16の検出信号E。がL(ロー)レベルになるので、
電源ユニット13から電源V。が制御部11に供給され
、制御部11が起動する。これにより、制御部11はモ
ータ駆動回路lOを介してディスクモータ9を回転し、
ステップモータ7によりヘッドプランジャ6を記録トラ
ック位置へ動かし、ストロボ14の充電許可を行なう(
ステップS2)。
When the user presses down the recording preparation instruction SWI to turn it on (step Sl), the detection signal E of the detection circuit 16 is activated as shown in FIG. becomes L (low) level, so
Power supply V from the power supply unit 13. is supplied to the control unit 11, and the control unit 11 is activated. As a result, the control unit 11 rotates the disk motor 9 via the motor drive circuit IO,
The step motor 7 moves the head plunger 6 to the recording track position to permit charging of the strobe 14 (
Step S2).

続いて、使用者がさらに押し下げてt/!影指示用のS
W2をONにすると(ステップS3)、検出回路16の
検出信号E4がLレベルになるので、制御部11は制御
信号E、、 E2をLレベルにし、これにより電源ユニ
ット13から電源V、、V、をCCD 3および画像処
理回路4に供給する(ステップS4)。その後、100
m5(ミリ秒)程度待ったら(ステップS5)、制御部
11は制御信号E3をLレベルにして電源ユニット13
から電源v3をMOD/MEC回路5に゛供給し、スト
ロボ14の充電禁止を行い(ステップS6) 、 50
m5待つ(ステップ57)。この間に、シャッタ絞り機
構を動かし、ストロボ発光による撮影を行う。
Next, the user presses down further and presses t/! S for shadow indication
When W2 is turned on (step S3), the detection signal E4 of the detection circuit 16 goes to L level, so the control section 11 sets the control signals E, . , is supplied to the CCD 3 and the image processing circuit 4 (step S4). Then 100
After waiting approximately m5 (milliseconds) (step S5), the control unit 11 sets the control signal E3 to L level and turns the power supply unit 13 on.
The power supply v3 is supplied from the MOD/MEC circuit 5 to the strobe 14, and charging of the strobe light 14 is prohibited (step S6).
Wait m5 (step 57). During this time, the shutter diaphragm mechanism is moved and photography is performed using strobe light.

次に、回路5のRECゲートをLレベルにして(ステッ
プS8)、磁気ディスク8に撮影した画像の記録を行い
(ステップS9)、続いて上記RECゲートをH(ハイ
)レベルにして(ステップ510)、かつ制御信号E1
. E2. E3をHレベルにして、電源V1. V2
. V3(7)供給を止める(ステップ5ll)。
Next, the REC gate of the circuit 5 is set to L level (step S8), the photographed image is recorded on the magnetic disk 8 (step S9), and then the REC gate is set to H (high) level (step 510). ), and control signal E1
.. E2. Set E3 to H level and power supply V1. V2
.. V3 (7) Stop the supply (step 5ll).

その後、SWIがOFFになると(ステップ512)、
ディスクモータ9.ステップモータ7、ヘッドプランジ
ャ6の通電を止め(ステップ513)、制?311部1
1はEEFROMI2に以前から書かれているデータと
今回書き込むデータとを比較して、両データの内容が一
致するか否かを判定する(ステップ514)。両データ
の内容が一致していない場合のみ、データをEEFRO
MI 1に書き込みし、その後、検出回路16の検出信
号E。がHレベルとなるので、電源ユニット13から制
御部IIへの電源V0の併給が止まる(ステップ515
)。すなわち、EEFROMI2に書き込まれているデ
ータと、今回書き込まれるデータとが一致した場合は書
き込みは行われないこととなる。
After that, when SWI turns OFF (step 512),
Disc motor9. The step motor 7 and the head plunger 6 are de-energized (step 513), and the control is performed? 311 part 1
1 compares the data previously written in the EEFROMI 2 with the data to be written this time, and determines whether the contents of both data match (step 514). Only if the contents of both data do not match, save the data to EEFRO.
MI 1 is written, and then the detection signal E of the detection circuit 16 is written. becomes H level, the simultaneous supply of power V0 from the power supply unit 13 to the control unit II stops (step 515).
). That is, if the data written in EEFROMI2 and the data to be written this time match, writing will not be performed.

なお、上述の実施例に加えて、10(識別)の変更等の
キー操作の直後にも、EEFROMI2に以前から記録
されているデータと今回の変更によるデータとを比較し
て、一致しないデータだけを書き込みするようにしても
よい。また、速写を行うときのように、SWIがOFF
 L、ない場合には、データは制御部ll内のRAM等
のメモリに一時収納しておけばよい。
In addition to the above-mentioned embodiment, immediately after a key operation such as changing 10 (identification), the data previously recorded in EEFROMI2 is compared with the data resulting from this change, and only the data that does not match is checked. may be written. Also, when the SWI is turned off, such as when taking snapshots,
If there is no L, the data may be temporarily stored in a memory such as a RAM in the control unit 11.

尚、以上の説明ではメモリに撮影に関するデータを記憶
させる例で示したが、このデータとして画像データも含
むことは言うまでもない。
In the above explanation, an example was given in which data related to photography is stored in the memory, but it goes without saying that this data also includes image data.

[発明の効果] 以上説明したように、本発明によれば、書き込み用メモ
リ(EEFROM)にデータをill込みする際、ディ
スクモータ、ステップモータ、ヘッドプランジャ、スト
ロボ充電回路等の大電流を消費する回路(負荷)に電気
を供給しないようにしたので、電源電圧の降下の危険性
を減少させることができ、書き込みの際の誤動作を解消
することができる。
[Effects of the Invention] As explained above, according to the present invention, when data is written into the write memory (EEFROM), a large amount of current is consumed by the disk motor, step motor, head plunger, strobe charging circuit, etc. Since electricity is not supplied to the circuit (load), the risk of a drop in the power supply voltage can be reduced, and malfunctions during writing can be eliminated.

また、本発明において、書き込み用メモリへのデータの
書き込みは撮影後に行うようにすれば、レリーズタイム
ラグなどの影響を受けない。
Furthermore, in the present invention, if data is written into the write memory after photographing, it will not be affected by release time lag or the like.

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

第1図は本発明実施例の回路構成を示すブロック図、 第2図は本発明実施例の動作手順を示すフローチャート
、 第3図は本発明実施例の出力のタイミングを示すタイミ
ングチャートである。 3・・・撮像素子(CCD)、 4・・・画像処理回路、 8・・・磁気ディスク、 lO・・・モータ駆動回路、 11・・・制御部(マイクロコンピュータ)、12・・
・EEPROM (書き込み用メモリ)、13・・・電
源ユニット、 16・・・検出回路。 0    −     へ     の1)   LL
ILLJ     田 〜 3   ≧   〇  −NrQ    責の    
の    >>>>     。 田 匡
FIG. 1 is a block diagram showing the circuit configuration of the embodiment of the present invention, FIG. 2 is a flowchart showing the operating procedure of the embodiment of the invention, and FIG. 3 is a timing chart showing the output timing of the embodiment of the invention. 3... Image pickup device (CCD), 4... Image processing circuit, 8... Magnetic disk, lO... Motor drive circuit, 11... Control unit (microcomputer), 12...
- EEPROM (writing memory), 13...power supply unit, 16...detection circuit. 0 - to 1) LL
ILLJ 田〜3 ≧ 〇 -NrQ Responsibility
>>>>. Tamasa

Claims (1)

【特許請求の範囲】[Claims] 撮影に関するデータを書き込みするための書き込み用記
憶手段を有する撮像装置において、前記記憶手段にデー
タを書き込みする際に、撮像装置全体の消費電力を必要
最小限に制限する制御手段を具備したことを特徴とする
撮像装置。
An imaging apparatus having a writing storage means for writing data related to photography, characterized by comprising a control means for limiting the power consumption of the entire imaging apparatus to the necessary minimum when writing data to the storage means. An imaging device that uses
JP63112348A 1988-05-11 1988-05-11 Imaging device Expired - Fee Related JP2670080B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63112348A JP2670080B2 (en) 1988-05-11 1988-05-11 Imaging device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63112348A JP2670080B2 (en) 1988-05-11 1988-05-11 Imaging device

Publications (2)

Publication Number Publication Date
JPH01284078A true JPH01284078A (en) 1989-11-15
JP2670080B2 JP2670080B2 (en) 1997-10-29

Family

ID=14584441

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63112348A Expired - Fee Related JP2670080B2 (en) 1988-05-11 1988-05-11 Imaging device

Country Status (1)

Country Link
JP (1) JP2670080B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0799597A (en) * 1993-09-29 1995-04-11 Canon Inc Device having information storage function
JPH08249788A (en) * 1995-03-10 1996-09-27 Sony Corp Recording/reproducing device
KR100497439B1 (en) * 1997-04-21 2005-09-02 후지 샤신 필름 가부시기가이샤 Lens combined photofilm unit with integrated circuit
US7006133B1 (en) 1998-03-20 2006-02-28 Nec Corporation Image input apparatus operable under low power consumption without employing buffer memory

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60170380A (en) * 1984-02-14 1985-09-03 Fuji Photo Film Co Ltd Electronic still camera

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60170380A (en) * 1984-02-14 1985-09-03 Fuji Photo Film Co Ltd Electronic still camera

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0799597A (en) * 1993-09-29 1995-04-11 Canon Inc Device having information storage function
JPH08249788A (en) * 1995-03-10 1996-09-27 Sony Corp Recording/reproducing device
KR100497439B1 (en) * 1997-04-21 2005-09-02 후지 샤신 필름 가부시기가이샤 Lens combined photofilm unit with integrated circuit
US7006133B1 (en) 1998-03-20 2006-02-28 Nec Corporation Image input apparatus operable under low power consumption without employing buffer memory

Also Published As

Publication number Publication date
JP2670080B2 (en) 1997-10-29

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