Device for data rate regulation linked to at least two digital v

Details Device for data rate regulation linked to at least two digital v Device for data rate regulation linked to at least two digital v

1988-12-21

1989-09-19

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358133, H04N 713

Patent

active

048686417

ABSTRACT:
Device for data rate regulation linked to at least two digital video signal components, having a correlation reduction circuit, a scanning conversion circuit (30), a normalization circuit (40), a circuit (50) for quantification by conversion into an integral value, a circuit for encoding the quantified values, and a data rate regulation circuit, characterized in that the normalization circuit itself includes (a) a circuit (401) for the computation of the ratio rap(acti) between the activity of a first component and the activity of a second component; (b) a circuit (402) for the computation, based on rap(acti), of the ratio rap(norm) between the data rate regulation norm relating to the second component and that relating to the first component; (c) a circuit (404) for the computation of the specific norms relating respectively to the first component and to the second component, receiving, on the one hand, the said value of rap(norm) and, on the other hand, a global norm value delivered by a global norm computation circuit (406); (d) a divider (405); (e) a counter (407); (f) an auxiliary memory (408); (g) a subtractor (409); (h) the global norm computation circuit (406).

REFERENCES:
patent: 4707729 (1987-11-01), Bruno
patent: 4774562 (1988-09-01), Chen
patent: 4802003 (1989-01-01), Takei

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