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Image signal processing apparatus and method

An image signal processing and image processing technology, which is applied in image communication, digital video signal modification, static camera, etc., can solve the problems of high processing speed, achieve the effect of reducing storage capacity and suppressing image processing delay

Inactive Publication Date: 2007-03-28
NEC ELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Image processing delays lead to the problem that digital cameras require high processing speeds for continuous shooting

Method used

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  • Image signal processing apparatus and method
  • Image signal processing apparatus and method
  • Image signal processing apparatus and method

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no. 1 example

[0029] First, an image signal processing apparatus according to a first embodiment of the present invention is described. The image signal processing apparatus of this embodiment has a feature that when a filter for processing an image on a line basis and a JPEG circuit for processing an image on a block basis process image data through a buffer memory, a filter is held between them (the filter and the JPEG circuit). While synchronizing, data is processed on a block basis.

[0030] Referring to FIG. 1, the structure of the image pickup apparatus of this embodiment will be described. As shown in FIG. 1 , the image pickup device includes an image sensor 110 , an image signal processing device 100 , a display device 120 , and a storage device 130 .

[0031] An image sensor (image pickup element) 110 is a semiconductor element that captures an image of a subject. The image sensor 110 photoelectrically converts light reflected by a subject, thereby generating captured image data....

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Abstract

To provide an image signal processing apparatus and method capable of reducing a memory capacity necessary for temporarily storing image data and suppressing an image processing delay. An image signal processing apparatus according to an embodiment of the invention includes: a filter that executes an image processing on captured image data from an image sensor on a line basis to generate YUV data, and outputs a synchronous signal each time the YUV data is generated up to a block; a buffer memory storing the YUV data in the order of generation; and a JPEG circuit that executes an image processing on the YUV data on a block basis in sync with the output synchronous signal to generate JPEG data.

Description

technical field [0001] The invention relates to an image signal processing device and method. Specifically, the present invention relates to an image signal processing apparatus and method for processing an image signal from an image pickup element. Background technique [0002] Hitherto, in the field of image pickup devices such as digital cameras, devices that display image signals (captured image data) or record such signals on recording media such as memory cards, in which the images The signal is obtained by an image sensor or other image pickup element that captures an image of the subject. Generally, in the case of recording image signals on a recording medium, the image signals are compressed to reduce the amount of data in order to record as many image signals as possible on one recording medium. For example, digital cameras compress image signals based on a standard called JPEG (Joint Photographic Experts Group). [0003] For example, Japanese Unexamined Patent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/21H04N1/41H04N1/46H04N1/60H04N5/232H04N5/92H04N19/00H04N19/80H04N101/00
CPCH04N7/26377H04N19/00903H04N7/26882H04N19/0089H04N19/80H04N19/85
Inventor 宫本敬介
Owner NEC ELECTRONICS CORP