Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1987-09-01
1989-02-21
Groody, James J.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358 62, H04N 574
Patent
active
048070408
ABSTRACT:
A projection type image display device utilizing an oil film is disclosed, which device comprises a filter having frequency characteristics enabling reduction of the spatial frequency response in the vertical direction for an input signal having a stepwise waveform in the vertical direction to a value under those obtained by using the following formula with respect to the coordinate x of the position of the scanning line in the vertical direction;
REFERENCES:
patent: 3044358 (1962-07-01), Glenn, Jr.
patent: 3475760 (1969-10-01), Carlson
Fernseh-und Kinotechnik, vol. 39, No. 5, 1985, Heidelberg Rudigevkays "Eidophor-Projektor fur Erhohte Bildqualitat", pp. 231-234.
"Television Image Technique Handbook", 1980, pp. 194-1054.
Itoh Shinetsu
Kanazawa Masaru
Kondo Tatsuhiko
Okada Kiyotaka
Seo Kenzo
Faris E. Anne
Groody James J.
Nippon Hoso Kyokai
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