Disc high resolution scanner

Details Disc high resolution scanner Disc high resolution scanner

1995-02-27

1996-12-31

Vu, Kim Yen

Facsimile and static presentation processing

Facsimile

Picture signal generator

358489, 348 96, H04N 108

Patent

active

055899528

ABSTRACT:
A high resolution scanner apparatus has a disc upon which is mounted an original to be scanned. The disc may include a track for providing high accuracy tracing of the original. If the original is transparent, such as a photographic film, the disc may include a transparent first disc upon which the original is mounted and a second disc upon which a spiral track is provided, the first and second discs being mounted coaxially to rotate together. The discs may be compact or laser discs. A slide structure has at least a first arm for reading the original. The slide structure may include a second arm for tracing the track when included. The second arm may also include a light source for illuminating the original through the transparent first disc. The slide structure moves radially with respect to the discs, either using a precision controller or according to the tracing of the track by the second arm. If the original is not transparent, such as a printed original or a photographic film on a white sheet, a single disc may be used with the original mounted on one side and the optional track being on the other side. Then the first arm provides a light source for illuminating the original for reading using reflected light. The track may store bit clock information to allow a control circuit to rotate the disc(s) at a constant linear velocity.

REFERENCES:
patent: 4642703 (1987-02-01), Endo
patent: 4870504 (1989-09-01), Ishida et al.
patent: 4980781 (1990-12-01), Yamamoto et al.
patent: 5144135 (1992-09-01), Hendrix et al.
"ChromaGraph DC 3000", Linotype-Hell, No. 001 194-1-3000 (AD).
"Sharp JX-610 Color Image Scanner".

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