Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2006-02-21
2006-02-21
Le, Vu (Department: 2613)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
Reexamination Certificate
active
07003034
ABSTRACT:
A fine granularity scalability encoding/decoding apparatus includes a first quantizer for performing a DCT on a motion-compensated image and quantizing a resulting value, a second quantizer for re-quantizing the value obtained by the first quantizer, an inverse-quantizer for re-quantizing a value re-quantized by the second quantizer, and a number of subtracters. A first subtracter obtains a difference between a value of N times the re-quantized value and the inverse-quantized value. A second subtracter obtains a difference between the value quantized by the first quantizer and the value quantized by the inverse-quantizer. And, a third subtracter subtracts the output value of the first subtracter from the output value of the second subtracter. Coding efficiency is increased and a bit-rate reduction of an entire coding stream is achieved by making an enhancement layer signal and a base layer signal have the same code.
REFERENCES:
patent: 6263022 (2001-07-01), Chen et al.
patent: 6480547 (2002-11-01), Chen et al.
patent: 6639943 (2003-10-01), Radha et al.
patent: 6788740 (2004-09-01), van der Schaar et al.
patent: 2002/0118743 (2002-08-01), Jian
patent: 2002/0181580 (2002-12-01), Van Der Schaar
patent: 2003/0058931 (2003-03-01), Zhang et al.
patent: 2003/0165331 (2003-09-01), Van Der Schaar
patent: 2003/0202579 (2003-10-01), Lin et al.
patent: 2003/0223643 (2003-12-01), Van Der Schaar
Li W: “Overview of Fine Granularity Scalability in MPEG-4 Video Standard” IEEE Transactions on Circuits and Systems for Video Technology, IEEE Inc. New York, US, vol. 11., No. 3, Mar. 2001, pp. 301-317, XP000994715 ISSN: 1051-8215.
Roh K-C et al: “Data partitioning and coding of DCT coefficients based on requantization for error-resilient transmission of video” Signal Processing. Image Communication, Elsevier Science Publishers, Amsterdam, NL, vol. 17, No. 8, Aug. 28, 2002, pp. 573-585, XP004378875.
Mendes L R et al: :Two-scale transmission of DCT-coded video over lossy packet networks Telecommunications Symposium, 1998. ITS' 98 Proceedings. SBT/IEEE International Sao Paulo, Brazil Aug. 9-13, 1998, New York, NY, USA, IEEE, US, Aug. 9, 1998, pp. 510-515. XP010300835.
Hsu Y-F et al: “Embedded SNR scalable MPEG-2 video encoder and its associated error resilience decoding procedures” Signal Processing. Image Communication, Elsevier Science Publishers, Amsterdam, NL, vol. 14, No. 5, Mar. 1999, pp. 397-412, XP004163262 ISSN:0923-5965 the whole document.
Fleshner & Kim LLP
Le Vu
LG Electronics Inc.
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