Pulse or digital communications – Pulse code modulation – Length coding
Reexamination Certificate
2007-07-10
2007-07-10
Ha, Dac (Department: 2611)
Pulse or digital communications
Pulse code modulation
Length coding
C375S246000, C341S067000, C341S065000
Reexamination Certificate
active
10182158
ABSTRACT:
A sequence of input information items is space-saving-encoded into variable-length code bit groups. Each information item is mapped on an associated code bit group of a set of bit groups, wherein the bit groups have particular lengths that are non-uniform in the set. The code bit groups are chained into a chaining configuration of bit groups while allowing progressive delimiting of successive bit groups. For regressive delimiting of successive bit groups, each bit group as divided into an idiosyncratic sequence of subgroups. In each sequence, the subgroups are assigned to a respective sub-chainings. The sub-chainings are configured into respective sub-chaining configurations, while maintaining pointer information regarding each respective sub-chaining configuration to preserve mutual synchronization among the various sub-chaining configurations regarding the associated in formation items.
REFERENCES:
patent: 6292883 (2001-09-01), Augusteijn et al.
patent: 6642860 (2003-11-01), Meulenbroeks
Bell et al., “Text Compression,” Prentice Hall PTR, Englewood Cliffs, New Jersey, 1990, pp. 105-107.
Ha Dac
Joseph Jaison
Koninklijke Philips Electronics , N.V.
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