发明授权
- 专利标题: Image recording sensor
- 专利标题(中): 图像记录传感器
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申请号: US109185申请日: 1987-10-15
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公开(公告)号: US4797562A公开(公告)日: 1989-01-10
- 发明人: Klaus Dietrich
- 申请人: Klaus Dietrich
- 申请人地址: DEX Munich
- 专利权人: Messerschmitt-Bolkow-Blohm GmbH
- 当前专利权人: Messerschmitt-Bolkow-Blohm GmbH
- 当前专利权人地址: DEX Munich
- 优先权: DEX3635687 19861021
- 主分类号: G01S3/784
- IPC分类号: G01S3/784 ; H04N5/335 ; H01J40/14
摘要:
The invention relates to an image recording sensor (1) with a plurality of photodetectors (15) in a matrix arrangement. The photodetectors (15) are here integrated components of cells (2), which through address lines (PX, PY) can be coupled for the definition of cell addresses. Each cell has at least one capacitor (C1, C2), in which the photocharge of the photodetector (15) can be stored. The resulting capacitor voltage (U1) is compared in a comparator (17) with a reference voltage (U.sub.REF, U2). The comparator is succeeded by an output circuit (18) for the output of a signal to the address lines upon the occurrence of a positive comparison result. All cells (2) can be driven via an external control circuit (4) with groups of common control and check signals. With such image recording sensor (1) no intensity values per picture element are output but only the addresses of the picture elements of interest, in which the intensity value has exceeded a given level, i.e., the intensity equivalent of the reference voltage (U.sub.REF, U2).
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