Method and apparatus for scanning a window in the image zone of

Details Method and apparatus for scanning a window in the image zone of Method and apparatus for scanning a window in the image zone of

1985-06-10

1987-02-17

Rubinson, Gene Z.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358180, H04N 314, H04N 700

Patent

active

046444050

ABSTRACT:
In order to scan a relatively small window (F) in the image zone (ZI) of a charge transfer device, a series of prior transfers (B.sub.1, B.sub.2, B.sub.3) are performed moving from the image zone to the memory zone (ZM) to move the leading edge of the window until it is adjacent to the output shift register (RD). The lines of the window may then be read conventionally (B.sub.4) omitting any reading of the lines that come before or after. This considerably reduces the delay (between steps B.sub.1 and B.sub.4) between image acquisition and signal processing, without altering the frame frequency which remains fixed at 50 Hz, for example.

REFERENCES:
patent: 4002824 (1977-01-01), Petrocelli et al.
patent: 4032976 (1977-06-01), Levine
patent: 4178614 (1979-12-01), Sauer
patent: 4188642 (1980-02-01), Morishita et al.

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