Markany Inc.

Jong Uk Choi

Chang Won Kim

Jong Won Kim

Sung Wook Jung

Han Ho Lee

Jae Hong Kim

Hyoung Jun Kim

Dong Hwan Shin

Jiyeon Kim

Jung Suck Cho

Hong Gu Kim

Hong Joon Ha

Lae Wook Lee

Hwa Min Yu

Gi Chul Choi

Kyu Sun Cho

Jung Seok Cho

Jong Weon Kim

Muhammad Ali Malik

Dongha Shin

Gyoung Soon 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

One aspect of the present invention discloses a text watermarking method for hiding user information. The text watermarking method comprises inputting encryption variable set information with which to encrypt a target document, wherein the target document includes text, generating an encrypted block based on the encryption variable set information and embedding the encrypted block into the target document by using an embedding rule of the encrypted block. The encryption variable set information includes a predetermined random key value, a user ID, and information indicating the embedding rule of the encrypted block. The predetermined random key value and the information indicating an embedding rule of the encrypted block are managed in a non-disclosure manner.

Text watermarking method and apparatus for hiding information into text documents

Provided are a method and apparatus for automatically splitting an object and a method, apparatus, and system for registering a file. The method for splitting an object includes receiving the data of a stereolithography (STL) file representing a 3D image, tagging vertex coordinates corresponding to objects included in the 3D image so that the vertex coordinates are classified for each object, and splitting each of the objects included in the 3D image based on the tagged vertex coordinates.

Method and apparatus for automatically splitting object and method, apparatus, and system for registering file

A method for transmitting contents including tracking information is described. The method comprising the steps of generating a content transmission stream relevant to an original content, determining at least part of the original content as a forensic mark (FM) target segment, generating a FM stream including the FM segment in which a particular pattern is inserted into the FM target segment and a FM stream different from the content transmission stream and transmitting the content transmission stream and the FM stream to a receiving device, wherein the FM stream is combined with the content transmission stream based on session information related to the transmitting in the receiving device.

Method for sending contents including tracking information and apparatus thereof, and method for receiving content including tracking information and apparatus thereof

A content stream transmission apparatus with reverse traceability comprises a pattern insertion unit dividing the original content in units of segments and inserting at least two patterns to each segment and creating at least two pattern contents; an encryption unit encrypting the at least two pattern contents; a content selection unit selecting one of the at least two pattern contents based on user identification information; and a transmission unit transmitting the selected pattern content to a user device. Therefore, as copyright and leakage tracking information are enabled to be inserted into the contents in real-time, the present invention not only provides security-enhanced contents but also services real-time content streaming services.

DRM content stream transmission apparatus, method, and transmission and reception system

A virtual application creating system comprises: a virtual environment library block including a plurality of modules that process native application program interfaces (APIs) of an operating system such that the native application APIs are suited to a virtual environment, finding a module capable of processing a specific native API from the plurality of modules when the specific native API is called and operating the found module; a virtual application installation block receiving position information of an application to be virtualized and information on an installation place where the application will be virtualized and installed from a user and inserting the virtual environment library block into a memory to install a virtual application in the installation place; and a virtual application execution block executing the virtual application installed in the installation place.

System for creating virtual application, method for installing virtual application, method for calling native API and method for executing virtual application

Simultaneously with a robust watermark and fragile watermark or semi-watermark is embedded into conventional securities, etc., such as gift coupon, various kinds of ticket, coupon, electronic stamp, bond & debenture, note, stock certificate, lottery, paper money, check, etc. and various kinds of public documents including certificates, etc. requiring confirmation and authentication (hereinafter, referred to as 'securities, etc.') in the form of digital file. Such watermark-embedded securities, etc. are conveniently issued on-line and are printed out in the form of paper through a printer. The printed securities, etc. are used off-line and are authenticated by determining the forgery or alternation by means of photocopy, etc. through the detection of the embedded watermark.

Apparatus and method for issuing and authenticating securities, etc. using digital watermarking

The present invention relates to a method for embedding a watermark into a black and white or color digital image [D(x)]. Basically the inventive method comprises the steps of transforming the digital image using a wavelet transform [WC(y)], transforming a watermark using discrete cosine transform (DCT), integrating the wavelet-transformed digital image with the DCT-transformed watermark [DW(x)+WC(y)] to insert the watermark into the image, and generating the watermarked image using inverse wavelet transform [D(x)']. For color images, RGB mode is converted into YIQ mode using a conversion matrix and the wavelet transform is applied to the Y-, I-, Q-values. This inventive digital watermarking of a color image is found to be highly robust against lossy compression and other image processing operations, compared to conventionally known methods which are known to be unsuitable for watermarking color images.

Watermarking of digital images using wavelet and discrete cosine transforms

The present invention relates to a method and apparatus for authenticating various types of digital certificates by using a text embedding method. The execution of the present invention is divided into two case, one case including images in the certificate and another case not including the images in the certificate, according to the characteristics of the certificate. In the former case, a text embedding method is applied to images included in the certificate to embed a series of information text (a specific number of the certificate, and issuing organization, name of a person in charge, etc.) designated by a person who issues the certificate into the images. In the latter case, there is generated an image imperceptible to the human eve but having the same color as the ground color certificate.

Method for embedding and extracting text into/from electronic documents

Digital watermarking of digital audio is performed by Fourier transforming digital audio data, wavelet transforming the magnitude components of the Fourier transform coefficients of the digital audio data, discrete cosine transforming a watermark signal, multiplying the sign of the wavelet transform coefficients of the magnitude components to the coefficients of the discrete cosine transformed watermark signal, adding the coefficients of the Fourier transformed digital audio data and the adjusted discrete cosine transformed watermark signal, and inverse wavelet transforming the audio signal's coefficients before inverse Fourier transformation to finally generate watermark-embedded audio signal data.

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Seoul, South Korea

Jong Uk Choi