Imaging device that prevents loss of shadow detail
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United States of America Patent
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Mar 1, 2011
Grant Date -
Jun 19, 2008
app pub date -
Feb 15, 2008
filing date -
Mar 25, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
An imaging device outputs brightness information according to an amount of incident light and includes: an imaging unit that includes a plurality of unit cells arranged one dimensionally or two-dimensionally, each unit cell including a photoelectric conversion part that generates a first output voltage in a reset state and a second output voltage according to an amount of incident light, and each unit cell generating a reset voltage that corresponds to the first output voltage and a read voltage that corresponds to the second output voltage; and an output unit operable to output, in relation to each unit cell, brightness information indicating a difference between the reset voltage and the read voltage when normal light is incident to the imaging device and the read voltage is in a predetermined range, and brightness information indicating high brightness when strong light is incident to the imaging device and the read voltage is not in the predetermined range.
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