Markany Inc.

Dong Hwan Shin

Chang Hun Yoo

Min Soo Park

Jong Uk Choi

So Won Kim

Ji Seop Moon

Tai Yoon Lee

Un Yeong Heo

Hwa Min Yu

Lae Wook Lee

Jin Hyug Choi

Hong Joon Ha

Hong Gu Kim

Dong Hwa Kim

A system and method for distributing data are provided. The system for distributing data which manages the distribution of data from one or more data transmitting nodes to a data receiving node, according to one embodiment of the present invention, comprises: an off-chain pool management unit; an integrity authentication unit; a data distribution verification unit; and a block chain storage unit.

System and method for distributing data using block chain

Writing paper

Disclosed is a watermark embedding method. The method includes receiving an original image, generating a watermark image based on the selected watermark pattern, generating an alpha blended stego image by alpha blending the original image and the watermark image, and providing the alpha blended stego image, in which the watermark image is generated by considering at least one of allowable pixel value range and alpha value &#x3b1; range of the watermark pattern applied to a first pixel of the original image, wherein the at least one of allowable pixel value range and alpha value &#x3b1; range are determined by the difference of pixel value of the first pixel between the original image and the stego image by embedding the watermark pattern to the first pixel.

Watermark embedding method and apparatus, and system

There are disclosed a system and method for preventing the leaking of digital content. The system for preventing the leaking of digital content may include a digital content layer generation unit for generating a digital content layer displaying digital content, a security layer generation unit for generating a security layer including security information based on information about a user terminal, and an information display unit for displaying the security layer generated by the security layer generation unit and the digital content layer generated by the digital content layer generation unit in the display device of the user terminal in an overlapping form so that the security information looks like overlapping with the digital content. Accordingly, the illegal leaking of digital content through photographing or screen capture can be prevented.

System and method for preventing the leaking of digital content

Growing community of inventors

Seoul, South Korea

Dong Hwan Shin