Data processing: speech signal processing – linguistics – language – Audio signal bandwidth compression or expansion
Reexamination Certificate
2006-06-20
2006-06-20
Chawan, Vijay (Department: 2654)
Data processing: speech signal processing, linguistics, language
Audio signal bandwidth compression or expansion
C375S240200, C710S053000, C341S050000
Reexamination Certificate
active
07065491
ABSTRACT:
An inverse-modified discrete cosine transform and overlap-add method, and hardware structure for MPEG Layer3 audio signal decoding. In order to have the MPEG Layer3 audio signal decoder have more competitive power in the consumer market, the present invention provides a low cost fast algorithm of the inverse-modified discrete cosine transform and overlap-add, so that the quantity of the operation needed in the decoding process can be significantly reduced to enhance the system performance. Afterwards, according to the fast algorithm, the present invention provides a hardware structure that is suitable for the inverse-modified discrete cosine transform and overlap-add in the MPEG Layer3 decoder. Since the hardware structure of the present invention makes the MPEG Layer3 decoder able to be implemented by the application specific integrated circuit (ASIC), the entire system can fulfill the low cost and high performance requirements.
REFERENCES:
patent: 5224213 (1993-06-01), Dieffenderfer et al.
patent: 5566154 (1996-10-01), Suzuki
patent: 5608713 (1997-03-01), Akagiri et al.
patent: 5654952 (1997-08-01), Suzuki et al.
patent: 5867819 (1999-02-01), Fukuchi et al.
patent: 5899970 (1999-05-01), Sonohara
patent: 6166663 (2000-12-01), Chen et al.
patent: 6199039 (2001-03-01), Chen et al.
patent: 2002/0106020 (2002-08-01), Cheng et al.
T. Skakamoto, M. Turuki, and T. Hase. “A fast MPEG-audio layer III Algorithm for a 32-bit MCU,” IEEE transactions on Consumer Electronics, vol. 45, No. 3, Aug., 1999.
ISO/IED 11172-3, Information technology-Coding of moving pictures and associated audio for digital storage medi at up to 1.5 Mbits/s. Part3-Audio.
T.H. Tsai, L.G. Chen, and T.C. Liu. “A novel MPEG-2 Audio Decoder with Efficient Data□□Arrangement and Memory Configuration”, IEEE Transactions on Consumer Electronics, vol. 43, No. 3, pp. 598-600, Aug. 1997.
T.H. Tsai, L.G. Chen, and Ruei-Xi Chen. “Implementation strategy of MPEG-2 Audio Decoder and Efficient Multichannel Architecture”, Signal Processing Systems, 1997. SIPS 1997—Design and□□Implementation, 1997 IEEE workshop on, Nov. 3-5, 1997. pp. 293-299.
Tsung-Han Tsai, Thou-Ho Chen, and Liang-Gee Chen. “Design and VLSI Implementation of MPEG□□audio decoder”. VLSI Technology, Systems and Applications, 1995. Proceedings of Technical □□Papers, 1995 International Symposium, May 31-Jun. 2, 1995. pp. 206-210.
Tsung-Han Tsai, Thou-Ho Chen, and Liang-Gee Chen. “An MPEG Audio Decoder Chip.”□□IEEE Transactions on Consumer Electronics, vol. 41, Issue 1: pp. 89-96.
Tsai Tsung-Han
Yang Ya-Chau
Chawan Vijay
J.C. Patents
National Central University
Pierre Myriam
LandOfFree
Inverse-modified discrete cosine transform and overlap-add... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Inverse-modified discrete cosine transform and overlap-add..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inverse-modified discrete cosine transform and overlap-add... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3679534