Sensor element array and method for signal or image processing

Details Sensor element array and method for signal or image processing Sensor element array and method for signal or image processing

1996-07-25

1999-06-29

Tung, Bryan

Television

Camera, system and detail

Combined image signal generator and general image signal...

348294, 348332, 2502081, H04N 5228

Patent

active

059175443

ABSTRACT:
An arrangement and method for processing a signal field of sensor signals which originate from the individual sensor elements, for example photodetectors, of a plurality of sensor elements which are regularly spaced in an area and which are each surrounded by six adjacent sensor elements while forming a hexagonal structure. A differential amplifier compares a quantity representing the potential difference and a reference quantity forms a switching quantity (I.sub.Mo) on the output side. A switching comparator, on the input side, receives the switching quantity and, if this switching quantity exceeds the preselectable switching threshold, on the output side emits a switching pulse which causes the "off" switching condition. Four signal outputs 1, 2, 3, 4 as well as four signal inputs (I.sub.M1 I.sub.M2, I.sub.M3, I.sub.M4) are each connected with a signal input and a signal output of one of the four analog circuits assigned to the four next adjacent switchable resistors, one signal respectively being supplied to the four signal outputs which represents the switching quantity. A switching stage for forming the reference quantity takes into account the signals present at the four signal inputs.

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Christof Koch et al., "Analog "neuronal" networks in early vision", Proc. Natl. Acad. Sci., USA, vol. 83, Jun. 1986, pp. 4263-4267.
A. Lumsdaine et al., "Nonlinear Analog Networks for Image Smoothing and Segmentation", Journal of VLSI Signal Processing, 3, 1991, pp. 53-68.
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Jaroslav Hynecek, "BCMD-An Improved Photosite Structure for High-Density Image Sensors", Transactions on Electron Devices, vol. 38, No. 5, May 1991 .

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