Facsimile and static presentation processing – Facsimile – Auxiliary signal
Patent
1990-05-29
1992-06-30
Coles, Sr., Edward L.
Facsimile and static presentation processing
Facsimile
Auxiliary signal
358432, 3582613, H04N 100
Patent
active
051268574
ABSTRACT:
A device for coding color picture data by compression maintains compressed data in a predetermined length and prevents the amount of DC signal component data to be allocated from becoming short. A luminance signal and chrominance signals Cr and Cb are compressed independently of each other and recorded as discrete DC components and AC components. When the amount of data of DC components of the chrominance signal Cr or Cb is greater than the total amount of data assigned to the signal Cr or Cb, the amount of data assigned to the signal Cr or Cb is increased to equal the amount of data of DC components of the signal Cr or Cb while the shortage is subtracted from the allocation of AC component data of the luminance signal Y. This insures the allocation of a sufficient amount of data to the coded data of DC components at all times.
REFERENCES:
patent: 4698689 (1987-10-01), Tzou
patent: 4924309 (1990-05-01), Hartnack et al.
patent: 4984076 (1991-01-01), Watanabe et al.
Ito Kenji
Moronaga Kenji
Watanabe Mikio
Coles Sr. Edward L.
Fuji Photo Film Co. , Ltd.
Grant II Jerome
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