Lg Electronics Inc.

Yonsei University

Sungkyunkwan University

Korea University Research and Business Foundation

Honggoo Kang

Hyejeong Jeon

Gyuhyeok Jeong

Lagyoung Kim

Daehwan Kim

Byungsuk Lee

Sangjin Lee

Minki Lee

Hyung Joon Koo

In a software watermarking method according to an embodiment, a watermark is embedded into an executable binary file by compiling a source code to generate the executable binary file and rewriting the executable binary file while reordering two or more functions included in the executable binary file. At the time of compiling the source code, metadata including information related to positions of functions in the executable binary file is generated and included in the binary. The executable binary file is rewritten by reflecting change in positions of the two or more functions using the metadata without recompiling the source code. Information related to the changed function location is stored in a separate ledger.

Method and device of embedding watermark in software

According to the present invention, a linear prediction filter coefficient of a current frame is acquired from an input signal using linear prediction, a quantized spectrum candidate vector of the current frame, corresponding to the linear prediction filter coefficient of the current frame, is acquired on the basis of first best information, and the quantized spectrum candidate vector of the current frame and the quantized spectrum vector of the previous frame are interpolated. Accordingly, in contrast to conventional phased optimization techniques, optimum parameters which minimize quantization errors, can be obtained.

Method and apparatus for encoding a speech signal

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Seoul, South Korea

Honggoo Kang