IMAGE PICKUP APPARATUS AND IMAGE PICKUP METHOD - TOSHIBA LSI SYSTEM SUPPORT KK

Title:

IMAGE PICKUP APPARATUS AND IMAGE PICKUP METHOD

Document Type and Number:

Japanese Patent JP2003319250

Kind Code:

A

Abstract:

To provide a wide dynamic range camera with a most significant feature that an image of an object having brightness over a wide range can be excellently picked up.

For example, the wide dynamic range camera picks up the image of the object at a low shutter speed and a high shutter speed and obtains a low shutter speed image and a high shutter speed image from a CCD camera 12. In that case, a low-speed integrated value integrating luminance signals of low shutter speed images and a high-speed integrated value integrating luminance signals of high shutter speed images are respectively detected by an integrated value circuit 31. Then, a mean luminance value of the low-speed integrated values and a means luminance value of the high-speed integrated values are respectively calculated by a microcomputer circuit 15. Besides, the microcomputer circuit 15 is configured to calculate a shutter speed optimal for picking up low luminance portion of the object and a shutter speed optimal for picking up a high luminance portion of the object based upon the respective mean luminance values.

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Inventors:

NAKAMURA SATORU
SHINOZUKA KENICHI

Application Number:

JP2002119367A

Publication Date:

November 07, 2003

Filing Date:

April 22, 2002

Export Citation:

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Assignee:

TOSHIBA LSI SYSTEM SUPPORT KK
TOSHIBA DIGITAL MEDIA ENG
TOKYO SHIBAURA ELECTRIC CO

International Classes:

H04N5/235; H04N5/335; H04N5/353; H04N5/355; (IPC1-7): H04N5/235; H04N5/335

Domestic Patent References:

JPH0758997A	1995-03-03
JP2002010143A	2002-01-11
JPH0795481A	1995-04-07
JPH11164195A	1999-06-18
JPH0522669A	1993-01-29
JPH1023324A	1998-01-23
JP2001218080A	2001-08-10
JPH0646325A	1994-02-18
JP2001136433A	2001-05-18
JPH0432380A	1992-02-04
JP2002077737A	2002-03-15
JP2002044515A	2002-02-08

Attorney, Agent or Firm:

Takehiko Suzue (6 outside)

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