JP2016039462A5

JP2016039462A5 -

Info

Publication number: JP2016039462A5
Application number: JP2014160796A
Authority: JP
Filing date: 2014-08-06
Publication date: 2017-09-14
Anticipated expiration: 2034-08-06

Description

上記目的を達成するために、本発明の撮像装置は、被写体の光学像を画像信号に変換して出力する第１の撮像素子と、予め決められた駆動周期で各走査線を走査する、前記第１の撮像素子と異なる第２の撮像素子と、前記第２の撮像素子から出力された信号と、前記予め決められた駆動周期とから、前記第２の撮像素子から出力された信号に重畳したノイズの周波数を検出する検出手段と、前記検出手段により検出されたノイズの周波数に基づいて、前記第１の撮像素子の各走査線を走査する駆動周期を設定する設定手段とを有し、ノイズによって前記走査線に対して垂直な方向に発生する前記第１の撮像素子の出力の変動の周期が、前記ノイズの周波数と駆動周期とに応じて変化し、前記設定手段は、前記変動の周期が予め決められた周期よりも大きくなる駆動周期を求めて設定する。 In order to achieve the above object, an imaging apparatus of the present invention scans each scanning line with a first imaging element that converts an optical image of a subject into an image signal and outputs the image signal, and a predetermined driving cycle. A second image sensor different from the first image sensor, a signal output from the second image sensor, and a predetermined drive cycle are superimposed on the signal output from the second image sensor. Detecting means for detecting the frequency of the noise, and setting means for setting a driving cycle for scanning each scanning line of the first image sensor based on the frequency of the noise detected by the detecting means, The period of fluctuation of the output of the first image sensor that occurs in the direction perpendicular to the scanning line due to noise changes according to the frequency of the noise and the driving period, and the setting means Period is a predetermined period Also set seeking larger driving cycle Ri.

Claims

A first image sensor that converts an optical image of a subject into an image signal and outputs the image signal;
A second imaging element different from the first imaging element that scans each scanning line at a predetermined driving cycle;
Detecting means for detecting a frequency of noise superimposed on the signal output from the second image sensor from the signal output from the second image sensor and the predetermined drive cycle;
Setting means for setting a driving cycle for scanning each scanning line of the first image sensor based on the frequency of noise detected by the detecting means;
The period of fluctuation of the output of the first image sensor that occurs in the direction perpendicular to the scanning line due to noise changes according to the frequency of the noise and the driving period, and the setting means An imaging apparatus characterized by obtaining and setting a driving cycle in which a cycle is larger than a predetermined cycle.

When the intensity of the signal output from the second image sensor periodically fluctuates in a direction perpendicular to the scanning line, the detecting means determines the frequency of the fluctuation and the predetermined value. The imaging device according to claim 1, wherein the frequency of the noise is detected based on a driving cycle.

The setting means sets a multiple of the period of the noise as a driving period for scanning each scanning line of the first image sensor based on the frequency of the noise detected by the detecting means. The imaging device according to claim 1 or 2.

4. Each of the scanning lines of the second image sensor is configured by a smaller number of pixels than each scanning line of the first image sensor. 5. Imaging device.

5. The imaging apparatus according to claim 1, wherein the predetermined driving cycle is shorter than a time required for scanning each scanning line of the first imaging element. 6. .

The imaging apparatus according to claim 1, wherein brightness and color of a light source are detected based on an image signal obtained by the second imaging element.

The first image pickup device is driven by using a multiple of the predetermined drive cycle as a drive cycle of the first image pickup device before detecting a noise frequency by the detecting means. Item 7. The imaging device according to any one of Items 1 to 6.

The detection means scans each scanning line at a predetermined drive cycle, and the noise output superimposed on the output signal from the signal output from the first image sensor and the predetermined drive cycle. A detection step for detecting the frequency;
Based on the frequency of the noise detected in the detection step, the setting means converts each scanning line of the second image sensor that converts an optical image of the subject into an image signal and outputs the image signal, which is different from the first image sensor. A setting step for setting a driving cycle to be scanned,
The period of fluctuation of the output of the second image sensor that occurs in the direction perpendicular to the scanning line due to noise changes according to the frequency of the noise and the driving period. In the setting step, the fluctuation of the fluctuation A control method for an imaging apparatus, characterized in that a driving cycle in which the cycle is larger than a predetermined cycle is obtained and set.