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DIFF Subgroup
H04N 23/70

Circuitry for compensating brightness variation in the scene

Introduced: January 2023

Full Title

Cameras or camera modules comprising electronic image sensors; Control thereof > Circuitry for compensating brightness variation in the scene

Of 10 combined children, 9 exist in both systems.

1 codes are CPC-only extensions.

IPC defines codes here since 2023.

Child Classifications

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  • H04N 23/71 Circuitry for evaluating the brightness variation since 2023 IPC+CPC Available in IPC and CPC
  • H04N 23/72 Combination of two or more compensation controls since 2023 IPC+CPC Available in IPC and CPC
  • H04N 23/73 by influencing the exposure time since 2023 IPC+CPC Available in IPC and CPC
  • H04N 23/74 by influencing the scene brightness using illuminating means since 2023 IPC+CPC Available in IPC and CPC
  • H04N 23/741 by increasing the dynamic range of the image compared to the dynamic range of the electronic image sensors since 2023 IPC+CPC Available in IPC and CPC
  • H04N 23/743 Bracketing, i.e. taking a series of images with varying exposure conditions since 2023 IPC+CPC Available in IPC and CPC
  • H04N 23/745 Detection of flicker frequency or suppression of flicker wherein the flicker is caused by illumination, e.g. due to fluorescent tube illumination or pulsed LED illumination since 2023 IPC+CPC Available in IPC and CPC
  • H04N 23/749 CPC only CPC only
  • H04N 23/75 by influencing optical camera components since 2023 IPC+CPC Available in IPC and CPC
  • H04N 23/76 by influencing the image signals since 2023 IPC+CPC Available in IPC and CPC