Method for simultaneously recording a halftone picture portion,

Details Method for simultaneously recording a halftone picture portion, Method for simultaneously recording a halftone picture portion,

1986-05-02

1987-02-17

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358257, 358283, 358298, H04N 146, H04N 123, H04N 132, H04N 140

Patent

active

046443924

ABSTRACT:
A method for simultaneously recording both a picture and a line drawing used in the recording of a reproduced image having a picture with a variable density tone existing together with a line drawing, the method including separately taking a picture signal and a line drawing signal and converting them to digital signals having equal numbers of bits, more than one bit of the digital signals being given a discrimination bit which allows discrimination between the picture signal and the line drawing signal, giving a line drawing bit which indicates the condition of the line drawing to more than one bit of the line drawing signal, dividing the bits into a picture portion, a line drawing portion, and a boundary portion located between the picture portion and the line drawing portion, forming a dot in the picture portion according to picture information of the original image, preferentially putting out line drawing data in the boundary portion, separately providing dot area percentage data to the line drawing portion, and forming a dot in the line drawing portion according to the dot area percentage data.

REFERENCES:
patent: 4151562 (1979-04-01), Tregay
patent: 4419691 (1983-12-01), Sing et al.
patent: 4496989 (1985-01-01), Hirosawa
patent: 4553172 (1985-11-01), Yamada et al.

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