24/06/2005 - Controller General of Patents, Designs, and Trade Marks

(21) Application No. 1018/DEL/2000 A (22) Date of filing of Application: 14/11/2000
(54) Title of the invention: “SYSTEM AND METHOD FOR EMBEDDING ADDITIONAL
INFORMATION IN COMPRESSED AUDIO DATA.”
(51) International Classification 7 :
G 06F 15/00
(30) Priority Data :
(31) Document No.: 11-364627
(32) Date : 22/12/1999
(33) Name of convention country :
JAPAN
(66) Filed U/s 5(2) : NIL
(61) Patent of addition to application
No. : NA
(62) Filed on : NA
(63) Divisional to Application No.
:NIL
(64) Filed on : NA
Total No. of Pages: 50
(57) Abstract:
(71) Name of the applicant:
INTERNATIONAL BUSINESS MACHINE
CORPORATION.
Address of the Applicant:
Armonk, New York 10504, U.S.A.
(72) Name of the Inventor:
TACHIBANA RYUKI
SHIMIZU SHUHICHI
KOBAYASHI SEIJI
A system for embedding additional information in compressed audio data comprising:
(1) means for extracting MDCT coefficients from said compressed audio data;
(2) means for employing said MDCT coefficients to calculate a frequency component for said
compressed audio data;
(3) means for embedding additional information in said frequency component obtained in a
frequency domain;
(4) means for transforming into MDCT coefficients said frequency component in which said
additional information is embedded; and
(5) means for using said MDCT coefficients, in which said additional information is
embedded, to generate compressed audio data.
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