Television – Bandwidth reduction system – Data rate reduction
Patent
1995-03-15
1996-01-02
Chin, Tommy P.
Television
Bandwidth reduction system
Data rate reduction
H04N 724
Patent
active
054813085
ABSTRACT:
A method of coding a set of multi- level signals, such as video signals comprises filtering the set of multi-level signals into one or more sets of multi-level sub-band signals; allocating a first quantity of bits for use in coding a first set of sub-band signals; coding the first set of multi-level sub-band signals using zero or more of the first quantity of allocated bits; allocating a second quantity of bits for use in coding a second set of sub-band signals, the second quantity of bits comprising zero or more of the first quantity of bits not used in coding the first set of multi-level sub-band signals; and coding the second set of multi-level sub-band signals using zero or more of the second quantity of allocated bits. Three examples of the method am provided. A hardware implementation involving the use of digital signal processors operating in parallel is also provided.
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Hartung John
Jacquin Arnaud E.
Michel Thomas A.
Podilchuk Christine I.
AT&T Corp.
Brown Kenneth M.
Chin Tommy P.
Restaino Thomas A.
Tung Bryan S.
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