Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2007-05-22
2007-05-22
An, Shawn S. (Department: 2621)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C375S240200, C375S240180, C375S240250, C375S240260, C382S250000, C382S248000, C382S233000, C382S235000
Reexamination Certificate
active
11081946
ABSTRACT:
An inputted digital signal of a first format (DV video signal) is restored to a variable-length code by having its framing cancelled by a de-framing section11, then decoded by a variable-length decoding (VLD) section12, inversely quantized by an inverse quantizing (IQ) section13, and inversely weighted by an inverse weighting (IW) section14. Then, required resolution conversion in the orthogonal transform domain (frequency domain) is carried out on the inversely weighted video signal by a resolution converting section16. After that, the video signal having the resolution converted is weighted by a weighting (W) section18, then quantized by a quantizing (Q) section19, coded by variable-length coding by a variable-length coding (VLC) section20, and outputted as a digital signal of a second format (MPEG video signal).
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Izumi Nobuaki
Yanagihara Naofumi
An Shawn S.
Frommer William S.
Frommer & Lawrence & Haug LLP
Presson Thomas F.
Sony Corporation
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