Data communication apparatus and data communication method

Details Data communication apparatus and data communication method Data communication apparatus and data communication method

1992-10-13

1993-10-19

Brinich, Stephen

Facsimile and static presentation processing

Facsimile

Reduced time or bandwidth for static image communication

358456, H04N 140

Patent

active

052539369

ABSTRACT:
According to this invention, an image binarized by a pseudo halftone binarization processing method is forcibly encoded by an MH encoding method, and a binary image which is not binarized by the pseudo halftone binarization processing method is preferentially encoded by an MR encoding method, so that a high compression ratio can be realized. When this method is applied to a facsimile apparatus, a communication time and a communication charge can be saved.

REFERENCES:
patent: 4688100 (1987-08-01), Haganuma et al.
patent: 4701806 (1987-10-01), Takashima
patent: 4766499 (1988-08-01), Inuzuka
patent: 4827353 (1989-05-01), Ehlers et al.
patent: 4894727 (1990-01-01), Sasaki
patent: 4975786 (1990-12-01), Katayama et al.

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