Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2005-08-09
2005-08-09
An, Shawn S. (Department: 2613)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C375S240020, C375S240050, C375S240070, C375S240080, C375S240240, C375S240260, C382S239000, C382S251000, C382S250000, C382S235000
Reexamination Certificate
active
06928112
ABSTRACT:
The present invention enables to effectively coding a predetermined time length of a video signal with a variable bit rate at real time (one-path) into a total coding bit amount of a constant data capacity.A coding difficulty calculator13determines a coding difficulty of an input signal for each unit time. An allocation bit amount calculator14interrelates an allocation sign amount with a coding difficulty for each unit time standardized in advance using an ordinary input signal of the type to which the input signal belongs, so as to obtain a reference value of the allocation sign amount for each unit time interrelated with the coding difficulty supplied from the coding difficulty calculator13. This reference value of the allocation sign amount is modified by a controller15into an actual allocation sign amount, according to which the input signal is coded by a moving picture image coding apparatus18, so as to create a coded data.
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An Shawn S.
Frommer William S.
Frommer & Lawrence & Haug LLP
Sony Corporation
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