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AssigneeFujitsu Microelectronics Limited
InventorsAsao Kokubo, Hiroshi Daiku, Yutaka Takeda, Norihiro Yoshida
Estimating the term…
An automatic gain control circuit generates, based on comparison between an average brightness of brightness data output for each frame from an image sensor and a target brightness, an integration time adjustment signal for adjusting an integration time during which the image sensor is exposed, a gain adjustment signal for adjusting gain of an amplifier that amplifies an output signal of the image sensor, and a frame rate adjustment signal for changing a frame rate. The automatic gain control circuit includes an exposure control circuit for adjusting a blanking time of each frame and generating, as the frame rate adjustment signal, a maximum integration time adjustment signal for switching a maximum integration time of the image sensor.
An automatic gain control circuit for outputting, based on comparison between a target brightness and an average brightness of brightness data output in units of frames from an image sensor, an integration time adjustment signal for adjusting an integration time during which the image sensor is exposed, a gain adjustment signal for adjusting a gain of an amplifier that amplifies an output signal of the image sensor, and a frame rate adjustment signal for changing a frame rate, the automatic gain control circuit comprising:
An automatic gain control circuit for receiving brightness data output in units of frames from an image sensor, adjusting an integration time during which the image sensor is exposed, and adjusting gain of an amplifier that amplifies an output signal of the image sensor, the automatic gain control circuit comprising:
An automatic gain control circuit for receiving brightness data output in units of frames from an image sensor, adjusting an integration time during which the image sensor is exposed, and adjusting gain of an amplifier that amplifies an output signal of the image sensor, the automatic gain control circuit comprising:
An automatic gain control circuit for changing gain of an amplifier that amplifies an output signal of an image sensor and a frame rate based on brightness information detected by the image sensor in units of frames, the image sensor including a plurality of photoelectric conversion elements, and each of the frames including an active period for reading signals from the plurality of photoelectric conversion elements and a blanking period other than the active period, the automatic gain control circuit comprising:
A semiconductor device comprising:
Dependencies are inferred from the claim text.