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Imaging apparatus and control method therefor

A camera device and capture control technology, which is applied in the direction of image communication, TV, color TV parts, etc., can solve the problems of large moving image data file size, low reference image quality, high compression ratio, etc.

Inactive Publication Date: 2010-09-22
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006]However, in the above conventional methods, since these methods reproduce black images (blackout images: blackout images) or substitute frames (stop motion images: stop motion images) , and this black image or substitute frame is inserted into the moving picture data file, so the file size of the moving picture data file may become large
[0007] Also, in the above conventional method, when the same stop motion image is input into the image codec, the quality of the reference image may become lower than that of the input image
Therefore, the compression ratio may not be as high as desired

Method used

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  • Imaging apparatus and control method therefor
  • Imaging apparatus and control method therefor
  • Imaging apparatus and control method therefor

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Embodiment Construction

[0024] first exemplary embodiment

[0025] A first exemplary embodiment of the present invention will be described below. figure 1 An example of the structure of a digital camera 100 serving as an imaging apparatus according to an exemplary embodiment is shown.

[0026] refer to figure 1 , the photographic lens 6 includes one or more lens elements. The exposure control unit 8 includes an aperture and a shutter, and adjusts the exposure level according to the brightness level of the subject. The image sensor 10 serving as an imaging unit includes a Charge Coupled Device (CCD) sensor or a Complementary Metal Oxide Semiconductor (CMOS) sensor, and has a resolution of several million pixels. The image sensor 10 outputs an analog image signal of each color component obtained by capturing an image.

[0027] An analog-to-digital (A / D) converter 12 converts an analog signal from the image sensor 10 into a digital signal. A dynamic random access memory (DRAM) 14 temporarily st...

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Abstract

In response to an input instruction to start a still image capturing operation when a moving image capturing operation is being performed, an imaging apparatus controls the still image capturing operation to record a still image file on a recording medium, interrupts the moving image capturing operation, generates a moving image in which an interframe-compressed image whose difference informationis zero is inserted as at least one of images to be substituted for a moving image corresponding to a time period for which the moving image capturing operation is interrupted, and records the generated moving image on the recording medium.

Description

technical field [0001] The invention relates to an imaging device and a control method thereof. More specifically, the present invention relates to an imaging apparatus for recording image data captured by an imaging unit on a recording medium and a control method of the imaging apparatus. Background technique [0002] A traditional digital camera converts the image signal of an image captured by an image sensor such as a charge-coupled device (CCD) into a digital signal, processes the digital signal into a digital video signal including a brightness signal and a color difference signal, and then compresses the digital video signal into a combined Photographic Experts Group (JPEG) encoded image data, and the compressed image data is recorded on a recording medium. In recent years, conventional image sensors in digital cameras have a high resolution of 10,000,000 pixels or higher. [0003] Meanwhile, a conventional digital camera can skip reading some horizontal lines and v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/232H04N5/77H04N5/92H04N5/225H04N5/91H04N19/50
Inventor 国枝秀太郎
Owner CANON KK