JP2008054372A5 - - Google Patents
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- JP2008054372A5 JP2008054372A5 JP2006225385A JP2006225385A JP2008054372A5 JP 2008054372 A5 JP2008054372 A5 JP 2008054372A5 JP 2006225385 A JP2006225385 A JP 2006225385A JP 2006225385 A JP2006225385 A JP 2006225385A JP 2008054372 A5 JP2008054372 A5 JP 2008054372A5
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- input voltage
- image
- power supply
- supply circuit
- signal output
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- 238000003384 imaging method Methods 0.000 claims 9
Claims (6)
前記入力電圧を前記入力電圧の変動範囲内に設定された目標電圧に昇圧して出力する昇圧手段と、
前記入力電圧を測定する測定手段と、
前記測定された前記入力電圧が第1の値未満のとき、前記目標電圧を第1の目標値に変更し、前記測定された前記入力電圧が第1の値以上のとき、前記目標電圧を前記第1の目標値よりも大きい第2の目標値に変更する変更手段とを備えることを特徴とする電源回路。 In the power supply circuit that adjusts and outputs the input voltage,
Boosting means for boosting and outputting the input voltage to a target voltage set within the fluctuation range of the input voltage ;
Measuring means for measuring the input voltage;
When the measured input voltage is less than a first value, the target voltage is changed to a first target value, and when the measured input voltage is greater than or equal to a first value, the target voltage is A power supply circuit comprising: changing means for changing to a second target value larger than the first target value .
前記第1の目標値は前記第1の値であり、前記第2の目標値は前記入力電圧の変動範囲内における略最大値であることを特徴とする電源回路。 The power supply circuit according to claim 1,
The power supply circuit according to claim 1, wherein the first target value is the first value, and the second target value is a substantially maximum value within a fluctuation range of the input voltage.
前記撮像素子から出力された画像信号に対して画像処理を施す画像処理回路と、An image processing circuit for performing image processing on an image signal output from the image sensor;
請求項1または2に記載した電源回路とを備え、A power supply circuit according to claim 1 or 2,
前記電源回路は、出力電圧を前記撮像素子または前記画像処理回路の少なくとも一方へ出力することを特徴とする撮像装置。The power supply circuit outputs an output voltage to at least one of the image sensor or the image processing circuit.
前記測定手段は、前記撮像装置のメインスイッチがオンされた後、または前記撮像装置の低消費電力モードが解除された後に、前記入力電圧を測定することを特徴とする撮像装置。 The imaging device according to claim 3.
The imaging device is characterized in that the measuring means measures the input voltage after a main switch of the imaging device is turned on or after a low power consumption mode of the imaging device is released.
前記撮像素子から出力された画像信号を表示用信号に変換して所定のフレームレートで出力する信号出力手段と、
前記信号出力手段から出力された前記表示用信号に基づいてファインダ画像を表示する表示手段と、
前記表示手段に前記ファインダ画像が表示されていない状態において、前記ファインダ画像を表示する撮影モードへの移行を指示するモード移行指示手段とをさらに備え、
前記測定手段は、前記モード移行指示手段が前記撮影モードへの移行を指示したことに基づいて、前記入力電圧を測定することを特徴とする撮像装置。 The imaging device according to claim 3.
A signal output means for converting the image signal output from the image sensor into a display signal and outputting it at a predetermined frame rate;
Display means for displaying a finder image based on the display signal output from the signal output means;
A mode transition instruction means for instructing transition to a shooting mode for displaying the finder image in a state where the finder image is not displayed on the display means;
The imaging apparatus is characterized in that the measuring means measures the input voltage based on the mode transition instruction means instructing the transition to the photographing mode .
前記モード移行指示手段が前記撮影モードへの移行を指示したことに基づいて、前記電源回路から前記撮像素子への電力供給を開始することにより前記撮像素子を起動させ、前記信号出力手段の駆動開始を指示することにより前記表示手段に前記ファインダ画像の表示を開始させる制御手段をさらに備え、
前記測定手段は、前記撮像素子が起動した後であって前記表示手段に前記ファインダ画像が表示開始されるまでの期間に前記入力電圧を測定することを特徴とする撮像装置。
The imaging apparatus according to claim 5,
Based on the mode transition instruction means instructing the transition to the photographing mode, the image sensor is started by starting the power supply from the power supply circuit to the image sensor, and the driving of the signal output means is started. Control means for causing the display means to start displaying the finder image by instructing
The imaging apparatus measures the input voltage during a period after the imaging device is activated and until the finder image starts to be displayed on the display unit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006225385A JP4957122B2 (en) | 2006-08-22 | 2006-08-22 | Power supply circuit and imaging apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006225385A JP4957122B2 (en) | 2006-08-22 | 2006-08-22 | Power supply circuit and imaging apparatus |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2008054372A JP2008054372A (en) | 2008-03-06 |
JP2008054372A5 true JP2008054372A5 (en) | 2009-10-08 |
JP4957122B2 JP4957122B2 (en) | 2012-06-20 |
Family
ID=39237892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006225385A Active JP4957122B2 (en) | 2006-08-22 | 2006-08-22 | Power supply circuit and imaging apparatus |
Country Status (1)
Country | Link |
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JP (1) | JP4957122B2 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4602433B2 (en) * | 2008-03-27 | 2010-12-22 | ルネサスエレクトロニクス株式会社 | Semiconductor device and power supply device using the same |
JP2010041857A (en) * | 2008-08-06 | 2010-02-18 | Canon Inc | Power supply apparatus and imaging arrangement |
US8116106B2 (en) * | 2008-09-19 | 2012-02-14 | Power Integrations, Inc. | Method and apparatus to select a parameter/mode based on a measurement during an initialization period |
JP5238447B2 (en) * | 2008-10-14 | 2013-07-17 | オリジン電気株式会社 | DC-DC converter |
JP2014222969A (en) * | 2013-05-13 | 2014-11-27 | 株式会社オートネットワーク技術研究所 | Voltage conversion device |
FR3020523B1 (en) * | 2014-04-29 | 2016-05-06 | Valeo Systemes De Controle Moteur | ELECTRICAL POWER SUPPLY AND METHOD FOR CONTROLLING AN ELECTRIC POWER SUPPLY |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001327067A (en) * | 2000-05-16 | 2001-11-22 | Fuji Photo Film Co Ltd | Boosting dc-dc converter circuit and imaging device |
JP4333392B2 (en) * | 2004-02-12 | 2009-09-16 | 株式会社デンソー | Booster circuit |
JP4306534B2 (en) * | 2004-05-25 | 2009-08-05 | 株式会社デンソー | Crew protection device |
-
2006
- 2006-08-22 JP JP2006225385A patent/JP4957122B2/en active Active
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