Abstract: A multi-line camera such as a two-line camera acquires image data of an object moving relative to the camera. An output of a first sensor line is connected through a first time-delay memory to a first comparator, and is connected directly to a second comparator. An output of a second sensor line is connected directly to the first comparator, and is connected through a second time-delay memory to the second comparator. Thus, the current image data of each sensor line is respectively compared crosswise to the time-delayed previous image data of the respective other sensor line. An evaluation unit compares the outputs of the two comparators, to determine which comparison had a better degree of correspondence, and dependent thereon determines the direction of relative motion of the object relative to the camera.

Abstract: A method for controlling an electronic line-scan camera having at least two lines with light-sensitive pixels by means of external trigger signals. A predetermined number of lines of the sensor are exposed due to a first external trigger signal and the image information of the first exposed line and that of the subsequent line or lines are each output successively.

Abstract: A multi-line camera such as a two-line camera acquires image data of an object moving relative to the camera. An output of a first sensor line is connected through a first time-delay memory to a first comparator, and is connected directly to a second comparator. An output of a second sensor line is connected directly to the first comparator, and is connected through a second time-delay memory to the second comparator. Thus, the current image data of each sensor line is respectively compared crosswise to the time-delayed previous image data of the respective other sensor line. An evaluation unit compares the outputs of the two comparators, to determine which comparison had a better degree of correspondence, and dependent thereon determines the direction of relative motion of the object relative to the camera.

Abstract: A method for controlling an electronic line-scan camera having at least two lines with light-sensitive pixels by means of external trigger signals. A predetermined number of lines of the sensor are exposed due to a first external trigger signal and the image information of the first exposed line and that of the subsequent line or lines are each output successively.

Abstract: A method for generating a digital output signal of a photosensor with at least one light-sensitive pixel is provided. An electrical intensity signal is generated by incident light, this being evaluated after or during an adjustable exposure time to generate a digital output signal. The exposure time is divided into time intervals. A time signal dependent on the number of time intervals that have passed during the exposure time is generated, and the intensity signal is compared with at least one adjustable reference value. The time signal is acquired as soon as the intensity signal reaches or exceeds or falls short of the reference value. The acquired time signal is evaluated as a digital output signal of the pixel. A structure of a photosensor for execution of the above method is also provided.