Telegraphy – Systems – Simplex-reversing periodic
Patent
1975-06-13
1976-12-07
Britton, Howard W.
Telegraphy
Systems
Simplex-reversing periodic
178 76, 178 788, 178DIG27, H04N 110
Patent
active
RE0290670
ABSTRACT:
A compact flatbed page scanner for facsimile transmission is described. The apparatus uses a linear charge coupled imaging device (CCID) for both light detection and electronic scanning across the width of the page. Compactness is achieved by folding the optical path from the scanned line to the CCID. A moving carriage below a horizontal glass plate supporting the document to be scanned carries: the linear CCID, a lens for focusing an image of one scanning line of the page onto the CCID, an assembly of bar mirrors for folding the path of the light beam from the scanning line to the lens, and tubular lamps for illuminating the scanning line. The motion of the carriage beneath the horizontal glass plate permits scanning an array of parallel lines, equally spaced over the length of the page. In the apparatus described, scanning a complete page may be performed from 4 seconds to several minutes, depending on the bandwidth available for transmission.
REFERENCES:
patent: 3011020 (1961-11-01), Stamps
patent: 3512129 (1970-05-01), Garfield
patent: 3523160 (1970-08-01), Willey
patent: 3561846 (1971-02-01), Kingsland
patent: 3562426 (1971-02-01), Lavergne
patent: 3752558 (1973-08-01), Lloyd
patent: 3761744 (1973-09-01), Smith
patent: 3830972 (1974-08-01), Siverling et al.
Bell Telephone Laboratories Incorporated
Britton Howard W.
Canepa Lucian C.
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