【特許請求の範囲】
【請求項１】 撮像素子と、
被写体光の撮像素子への透光と遮光を制御する遮光手段と、
上記遮光手段の遮光状態にて撮像素子を動作させて補正データを読出す第１読出し手段と、
上記遮光手段の透光状態にて撮像素子を動作させて画像データを読出す第２読出し手段と、
上記第１読出し手段の補正データに基いて上記第２読出し手段の画像データの補正を行う画像補正手段と
を具備し、
上記第２読出し手段の動作を実行する前の撮影準備動作と並行して上記第１読出し手段による動作を実行し、該第２読出し手段による動作が実行された後に上記画像補正手段を実行することを特徴とする電子カメラ。
【請求項２】 被写体像を撮像する撮像素子と、
上記撮像素子への露光量を制御するシャッタと、
被写体輝度に応じて露出秒時を算出し、上記シャッタを開いて該露出秒時の画像データを上記撮像素子から取込む撮影動作と、上記シャッタを閉じて該露出秒時の補正データを上記撮像素子から取込む補正データ取得動作と、を実行可能な制御回路と、
上記補正データ取得動作で取込まれた補正データに基いて上記撮影動作で取込まれた画像データを補正する補正動作を行う補正回路と、
を有した電子カメラに於いて、
上記撮影動作の後、上記補正動作を実行するために上記補正データ取得動作を該撮影動作の前に実行される撮影準備動作に並行して実行し、該撮影準備動作の終了時に上記補正データ取得動作が終了していないときは、該補正データ取得動作の終了を検出した後に上記撮影動作を実行することを特徴とする電子カメラ。
【請求項３】 被写体像を撮像する撮像素子と、
上記撮像素子への露光量を制御するシャッタと、
被写体輝度に応じて露出秒時を算出し、上記シャッタを開いて該露出秒時の画像データを上記撮像素子から取込む撮影動作と、上記シャッタを閉じて上記撮像素子を積分動作させて補正データを取込む補正データ取得動作と、を実行可能な制御回路と、
上記補正データ取得動作で取込まれた補正データに基いて上記撮影動作で取込まれた画像データを補正する補正動作を行う補正回路と、
を有した電子カメラに於いて、
上記撮影動作の後、上記補正動作を実行するために上記補正データ取得動作を該撮影動作の前に実行される撮影準備動作に並行して実行し、該撮影準備動作終了と共に該補正データ取得動作も動作を終了して積分動作の時間を記憶し、該補正動作を実行する際に用いられる補正データは、該補正データ取得動作で取得された補正データを該撮影動作に於ける露出秒時と該記憶された積分動作の時間とに基き該露出秒時に対応する補正データへ変換されたものであることを特徴とする電子カメラ。
【請求項４】 上記撮影準備動作は、焦点検出動作、焦点調節のためのレンズ駆動動作、クイックリターンミラーの駆動動作、絞り駆動動作、撮影レンズの焦点距離調節動作及びストロボ装置の充電動作のうちの少なくとも１つを含むことを特徴とする請求項１乃至３の何れか１に記載の電子カメラ。
[Claims]
1. Image sensorWhen,
A shading means that controls the transmission and shading of subject light to the image sensor,
The first reading means for reading the correction data by operating the image sensor in the light-shielding state of the light-shielding means, and
A second reading means for reading image data by operating the image sensor in the light-transmitting state of the light-shielding means, and
An image correction means that corrects the image data of the second reading means based on the correction data of the first reading means.
Equipped with
The operation by the first reading means is executed in parallel with the shooting preparation operation before the operation of the second reading means is executed, and the image correction means is executed after the operation by the second reading means is executed.An electronic camera that features that.
2. Take a picture of the subjectWith the image sensor
the aboveImage sensorA shutter that controls the amount of exposure to
The exposure seconds are calculated according to the subject brightness, the shutter is opened to capture the image data at the exposure seconds from the image sensor, and the shutter is closed to capture the correction data at the exposure seconds. It is possible to perform the correction data acquisition operation taken from the element.controlcircuitWhen,
A correction circuit that performs a correction operation that corrects the image data captured in the shooting operation based on the correction data captured in the correction data acquisition operation, and a correction circuit that performs the correction operation.
In an electronic camera with
After the shooting operation, in order to execute the correction operation, the correction data acquisition operation is executed in parallel with the shooting preparation operation executed before the shooting operation, and the correction data acquisition is performed at the end of the shooting preparation operation. When the operation is not completed, the above shooting operation is executed after detecting the end of the correction data acquisition operation.An electronic camera that features that.
3. An image sensor that captures the subject image and
A shutter that controls the amount of exposure to the image sensor,
The exposure second time is calculated according to the subject brightness, and the shooting operation of opening the shutter to capture the image data at the exposure second time from the image sensor and the correction data by closing the shutter and integrating the image sensor. A control circuit that can execute the correction data acquisition operation to capture, and
A correction circuit that performs a correction operation that corrects the image data captured in the shooting operation based on the correction data captured in the correction data acquisition operation, and a correction circuit that performs the correction operation.
In an electronic camera with
After the shooting operation, in order to execute the correction operation, the correction data acquisition operation is executed in parallel with the shooting preparation operation executed before the shooting operation, and the correction data acquisition operation is executed at the end of the shooting preparation operation. The correction data used when the operation is completed and the time of the integration operation is memorized and the correction operation is executed is the correction data acquired in the correction data acquisition operation and the exposure seconds in the shooting operation. It is characterized in that it is converted into the corresponding correction data at the exposure second based on the time of the stored integration operation.Electronic camera.
4. The shooting preparation operation includes at least one of a focus detection operation, a lens drive operation for focus adjustment, a quick return mirror drive operation, an aperture drive operation, a focal length adjustment operation of a photography lens, and a strobe device charging operation. The electronic camera according to any one of claims 1 to 3, wherein the electronic camera includes.
【０００７】
【課題を解決するための手段】
すなわちこの発明は、撮像素子と、被写体光の撮像素子への透光と遮光を制御する遮光手段と、上記遮光手段の遮光状態にて撮像素子を動作させて補正データを読出す第１読出し手段と、上記遮光手段の透光状態にて撮像素子を動作させて画像データを読出す第２読出し手段と、上記第１読出し手段の補正データに基いて上記第２読出し手段の画像データの補正を行う画像補正手段とを具備し、上記第２読出し手段の動作を実行する前の撮影準備動作と並行して上記第１読出し手段による動作を実行し、該第２読出し手段による動作が実行された後に上記画像補正手段を実行することを特徴とする。
0007
[Means for solving problems]
That is, the present invention comprises an image sensor , a light-shielding means for controlling transmission and light-shielding of subject light to the image sensor, and a first-reading means for operating the image sensor in a light-shielded state of the light-shielding means to read correction data. Then, the image sensor is operated in the translucent state of the light-shielding means to read the image data, and the image data of the second reading means is corrected based on the correction data of the first reading means. The image correction means is provided, and the operation by the first reading means is executed in parallel with the shooting preparation operation before the operation of the second reading means is executed, and the operation by the second reading means is executed. It is characterized in that the above-mentioned image correction means is executed later.
またこの発明は、被写体像を撮像する撮像素子と、上記撮像素子への露光量を制御するシャッタと、被写体輝度に応じて露出秒時を算出し、上記シャッタを開いて該露出秒時の画像データを上記撮像素子から取込む撮影動作と、上記シャッタを閉じて該露出秒時の補正データを上記撮像素子から取込む補正データ取得動作と、を実行可能な制御回路と、上記補正データ取得動作で取込まれた補正データに基いて上記撮影動作で取込まれた画像データを補正する補正動作を行う補正回路と、を有した電子カメラに於いて、上記撮影動作の後、上記補正動作を実行するために上記補正データ取得動作を該撮影動作の前に実行される撮影準備動作に並行して実行し、該撮影準備動作の終了時に上記補正データ取得動作が終了していないときは、該補正データ取得動作の終了を検出した後に上記撮影動作を実行することを特徴とする。
更にこの発明は、被写体像を撮像する撮像素子と、上記撮像素子への露光量を制御するシャッタと、被写体輝度に応じて露出秒時を算出し、上記シャッタを開いて該露出秒時の画像データを上記撮像素子から取込む撮影動作と、上記シャッタを閉じて上記撮像素子を積分動作させて補正データを取込む補正データ取得動作と、を実行可能な制御回路と、上記補正データ取得動作で取込まれた補正データに基いて上記撮影動作で取込まれた画像データを補正する補正動作を行う補正回路と、を有した電子カメラに於いて、上記撮影動作の後、上記補正動作を実行するために上記補正データ取得動作を該撮影動作の前に実行される撮影準備動作に並行して実行し、該撮影準備動作終了と共に該補正データ取得動作も動作を終了して積分動作の時間を記憶し、該補正動作を実行する際に用いられる補正データは、該補正データ取得動作で取得された補正データを該撮影動作に於ける露出秒時と該記憶された積分動作の時間とに基き該露出秒時に対応する補正データへ変換されたものであることを特徴とする。
The present invention includes an imaging device for capturing an object image, and a shutter for controlling the exposure amount to the image pickup device, to calculate the time exposed seconds according to the object luminance, an image at the time of said exposure Debyo open the shutter A control circuit capable of performing a shooting operation of capturing data from the image pickup element and a correction data acquisition operation of closing the shutter and capturing correction data at the exposure seconds from the image pickup element, and a correction data acquisition operation. In an electronic camera having a correction circuit that performs a correction operation that corrects the image data captured in the above-mentioned shooting operation based on the correction data captured in the above-mentioned shooting operation, the above-mentioned correction operation is performed after the above-mentioned shooting operation. In order to execute the correction data acquisition operation, the correction data acquisition operation is executed in parallel with the shooting preparation operation executed before the shooting operation, and when the correction data acquisition operation is not completed at the end of the shooting preparation operation, the correction data acquisition operation is not completed. It is characterized in that the above shooting operation is executed after detecting the end of the correction data acquisition operation.
Further, in the present invention, an image pickup element that captures a subject image, a shutter that controls the amount of exposure to the image pickup element, and an exposure second time are calculated according to the subject brightness, and the shutter is opened to open the image at the exposure second time. With a control circuit that can execute a shooting operation that captures data from the image pickup element and a correction data acquisition operation that closes the shutter and integrates the image pickup element to capture correction data, and the correction data acquisition operation. In an electronic camera having a correction circuit that corrects the image data captured in the shooting operation based on the captured correction data, the correction operation is executed after the shooting operation. The correction data acquisition operation is executed in parallel with the shooting preparation operation executed before the shooting operation, and the correction data acquisition operation also ends the operation at the end of the shooting preparation operation to reduce the time of the integration operation. The correction data to be stored and used when executing the correction operation is based on the exposure seconds in the shooting operation and the time of the stored integration operation based on the correction data acquired in the correction data acquisition operation. It is characterized in that it is converted into the corresponding correction data at the exposure second.
この発明の電子カメラにあっては、被写体光の撮像素子への透光と遮光が遮光手段で制御され、上記遮光手段の遮光状態にて撮像素子が動作されて補正データが第１読出し手段にて読出される。一方、上記遮光手段の透光状態にて撮像素子が動作されて画像データが第２読出し手段にて読出される。また、画像補正手段により、上記第１読出し手段の補正データに基いて、上記第２読出し手段の画像データの補正が行われる。そして、上記第２読出し手段の動作が実行される前の撮影準備動作と並行して上記第１読出し手段による動作が実行され、該第２読出し手段による動作が実行された後に上記画像補正手段が実行される。
In the electronic camera of the present invention, the light transmission and shading of the subject light to the image sensor are controlled by the light-shielding means, the image sensor is operated in the light-shielded state of the light-shielding means, and the correction data becomes the first reading means. Is read out. On the other hand, the image sensor is operated in the translucent state of the light-shielding means, and the image data is read out by the second reading means. Further, the image correction means corrects the image data of the second reading means based on the correction data of the first reading means. Then, the operation by the first reading means is executed in parallel with the shooting preparation operation before the operation of the second reading means is executed, and after the operation by the second reading means is executed, the image correction means Will be executed.
またこの発明の電子カメラにあっては、被写体像を撮像する撮像素子への露光量がシャッタによって制御される。そして、被写体輝度に応じて露出秒時が算出され、上記シャッタが開かれて該露出秒時の画像データが上記撮像素子から取込まれる撮影動作と、上記シャッタが閉じられて該露出秒時の補正データが上記撮像素子から取込まれる補正データ取得動作と、制御回路にて実行可能である。上記補正データ取得動作で取込まれた補正データに基いて上記撮影動作で取込まれた画像データは、補正動作を行う補正回路によって補正される。そして、上記撮影動作の後、上記補正動作を実行するために上記補正データ取得動作が該撮影動作の前に実行される撮影準備動作に並行して実行され、該撮影準備動作の終了時に上記補正データ取得動作が終了していないときは、該補正データ取得動作の終了が検出された後に上記撮影動作が実行される。
更にこの発明の電子カメラにあっては、被写体像を撮像する撮像素子への露光量がシャッタにより制御される。そして、被写体輝度に応じて露出秒時が算出され、上記シャッタが開かれて該露出秒時の画像データが上記撮像素子から取込まれる撮影動作と、上記シャッタが閉じられて上記撮像素子が積分動作されて補正データが取込まれる補正データ取得動作と、が制御回路により実行可能である。また、上記補正データ取得動作で取込まれた補正データに基いて上記撮影動作で取込まれた画像データが、補正動作を行う補正回路によって補正される。そして、上記撮影動作の後、上記補正動作を実行するために上記補正データ取得動作が該撮影動作の前に実行される撮影準備動作に並行して実行され、該撮影準備動作終了と共に該補正データ取得動作も動作が終了されて積分動作の時間が記憶され、該補正動作を実行する際に用いられる補正データは、該補正データ取得動作で取得された補正データを該撮影動作に於ける露出秒時と該記憶された積分動作の時間とに基き該露出秒時に対応する補正データへ変換されたものである。
Further, in the electronic camera of the present invention, the amount of exposure to the image pickup device that captures the subject image is controlled by the shutter. Then, the exposure seconds are calculated according to the subject brightness, and the shooting operation in which the shutter is opened and the image data at the exposure seconds is taken from the image sensor, and the shutter is closed and the exposure seconds are taken. The correction data acquisition operation in which the correction data is taken from the image sensor and the control circuit can execute the correction data. The image data captured in the shooting operation based on the correction data captured in the correction data acquisition operation is corrected by the correction circuit that performs the correction operation. Then, after the shooting operation, the correction data acquisition operation is executed in parallel with the shooting preparation operation executed before the shooting operation in order to execute the correction operation, and the correction is performed at the end of the shooting preparation operation. When the data acquisition operation is not completed, the shooting operation is executed after the end of the correction data acquisition operation is detected.
Further, in the electronic camera of the present invention, the amount of exposure to the image pickup device that captures the subject image is controlled by the shutter. Then, the exposure seconds are calculated according to the subject brightness, and the shooting operation in which the shutter is opened and the image data at the exposure seconds is taken from the image sensor and the shutter is closed and the image sensor integrates. The correction data acquisition operation, which is operated and the correction data is taken in, can be executed by the control circuit. Further, the image data captured in the shooting operation is corrected by the correction circuit that performs the correction operation based on the correction data captured in the correction data acquisition operation. Then, after the shooting operation, the correction data acquisition operation is executed in parallel with the shooting preparation operation executed before the shooting operation in order to execute the correction operation, and the correction data is executed at the end of the shooting preparation operation. As for the acquisition operation, the operation is completed and the time of the integration operation is stored, and the correction data used when executing the correction operation is the exposure seconds of the correction data acquired in the correction data acquisition operation in the shooting operation. It is converted into the correction data corresponding to the exposure seconds based on the time and the time of the stored integration operation.