Signal processing circuit for solid state imaging apparatus incl

Details Signal processing circuit for solid state imaging apparatus incl Signal processing circuit for solid state imaging apparatus incl

1990-10-03

1992-04-07

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 41, H04N 964

Patent

active

051032996

ABSTRACT:
A signal processing apparatus for a solid-state imaging device in which an imaging output signal from a solid-state image sensor of an imaging section in the imaging device having a spatial offset is digitized and formed into a detail signal utilized for image enhancement by digital signal processing. More specifically, a first delay circuit having at least one delay unit which imposes a dealy time of approximately one horizontal scanning period receives a digitized green color imaging signal having the spatial offset. Signal synthesis is then performed in a first synthesis circuit so as to limit the bandwidth of the green color imaging signal in a perpendicular direction. A second delay circuit having at least one digital delay unit which imposes a delay time of approximately one horizontal scanning period receives one of a digitized red or blue color imaging signal or a combined red and blue digitized color imaging signal. Signal synthesis is then performed by a second synthesis unit so as to limit the bandwidth of the red or blue digitized color imaging signal or the combined red and blue digitized color imaging signal in the perpendicular direction. Equal amounts of selected outputs from the first and second synthesis units are summed together in a summation unit and outputted through a digital filter so as to form the horizontal detail signal.

REFERENCES:
patent: 4672430 (1987-06-01), Asaida
patent: 4979024 (1990-12-01), Misawa et al.

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