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high dynamic range CMOS (CCD) (HDRC)

High Dynamic Range CMOS (HDRC) is a further development of CMOS sensors. The difference between HDRC sensors and CMOS sensors or CCD sensors is that the output voltage of HDRC sensors increases linearly with brightness. They are much more powerful and highly sensitive and their behavior is adapted to the brightness perception of the human eye.

As a result, HDRC sensors can be used at very low and at high illuminance levels. Their dynamic range covers approximately nine powers of ten between 1 millilux (mlx) and one million lux (Mlx). In contrast, CCD sensors cover about three powers of ten.

Image with CCD (left) and HDRC sensor, video:

Image with CCD (left) and HDRC sensor, video:

Technically, in HRCS sensors, the signals of each photosensitive element, which are photodiodes, are amplified by a downstream CMOS FET.

Due to the extremely high dynamic range, which is around 170 dB, digital cameras with HDRC sensors are ideal for applications with high brightness differences, such as those encountered in road traffic. This is the case for driver assistance systems and lane departure warning( LDW) systems. Video surveillance( CCTV) also lends itself to HDRC digital cameras, since such cameras must be used to identify people in daylight and darkness.

Englisch: high dynamic range CMOS (CCD) - HDRC
Updated at: 29.12.2017
#Words: 196
Links: complementary metal oxide semiconductor (Chip) (CMOS), continuity of care document (healthness) (CCD), voltage, brightness, arsenic (As)
Translations: DE

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