Exposure control device for camera mounted on electronic apparatus
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United States of America Patent
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Sep 11, 2007
Grant Date -
Feb 21, 2002
app pub date -
Jun 27, 2001
filing date -
Jun 28, 2000
priority date (Note) -
Expired
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Abstract
An exposure control device accurately adjusts exposure even when photographing the operator. An area-integration circuit divides a photographed image into a central area and a peripheral area to integrate corresponding video signals for the respective areas. When the operator of a notebook personal computer sets the direction of an image pickup unit to photograph himself a control microcomputer multiplies the respective areas by weights so that the weight of the central area is larger than the others, and then it adds the two integration results. The control microcomputer sets the addition result as exposure information, compares the exposure level indicated by the information with a reference level, controls an electronic shutter of an image pickup device and a gain of an amplifier circuit so that the exposure level coincides with the reference level, and adjusts the exposure of a video camera to a proper level. When the image pickup unit is set in the direction opposite to the operator, the conventional exposure control is performed.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- SONY CORPORATION
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Shimizu, Shuji | Kanagawa, JP | 30 | 279 |
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Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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