Circuit for the sensor controlled distance measurement

摘要

A circuit for sensor controlled distance measurement is disclosed having two linear image sensors which are positioned to receive corresponding lines of two images derived from an object. The sensor signals are subjected to correlation measurements from which the distance of the object is determined. In the case of circuits of this sort, one endeavors to attain as exact and unfalsified a distance measurement as possible. For this purpose, the sensor signals are digitalized in evaluators, then read via transfer transistors into shift registers which undertake relative position displacements of the sensor signals in a longitudinal direction of the image sensors between individual signal cycles, and are subject to a correlation measurement. The circuit distinguishes itself in that the digital evaluation proceeds completely independently of parameters of the shift register and is thus carried out very precisely. Applications include photographic and electronic cameras.