초록 ▼

A digital camera has a sensor array which removes subject motion blur by monitoring the rate at which charge is collected by the individual sensors within the array during scene imaging. If the rate at which photons are striking the sensor varies, then the brightness of the image which the sensor is

A digital camera has a sensor array which removes subject motion blur by monitoring the rate at which charge is collected by the individual sensors within the array during scene imaging. If the rate at which photons are striking the sensor varies, then the brightness of the image which the sensor is viewing must be changing. When a circuit built in to the sensor array detects that the image brightness is changing, the amount of charge collected is preserved and the time at which brightness change wag detected is recorded. Each pixel corresponding to each sensor where exposure was stopped is adjusted to the proper exposure by linearly extrapolating the exposure the sensor did receive so that the pixel corresponding to the sensor has an intensity corresponding to the dynamic range of the entire image. The image sensing array will preferably be implemented as active-pixel sensor CMOS image sensors.

대표청구항 ▼

1. A digital camera incorporating circuitry for prevention of blur caused by motion of a photographic subject, comprising:a multiplicity of photosensors arranged in an imaging array, each photosensor developing a first value proportional to the number of photons received by said sensor; a photograph

1. A digital camera incorporating circuitry for prevention of blur caused by motion of a photographic subject, comprising:a multiplicity of photosensors arranged in an imaging array, each photosensor developing a first value proportional to the number of photons received by said sensor; a photographic lens which projects an image onto the imaging array, wherein each photosensor in the imaging array is operatively connected to a circuit which is capable of calculating a second derivative with respect to time of the first value proportional to the number of photons received by said sensor; and a programmable memory operatively connected to each circuit to store at least one time value for each photosensor corresponding to a length of exposure time for each photosensor, the length of exposure time for each photosensor connected to each circuit determined by the second derivative of the first value meeting a selected criteria which indicates movement was detected.