Samsung Electronics Co., Ltd.

Quram Co., Ltd.

Woo-Gyu Lim

Young-Hoon Min

Jae-Min Jung

Seok-Kyu Jang

Young Cheul Wee

Jin-Woo Nam

Se-Wook Park

Chang-Gie Lee

Woo-Jin Yun

Sung-Min Kwak

A method and apparatus for preventing illegal reuse of Digital Right Management (DRM) content in a portable terminal is provided. The method includes performing user authentication when there is an attempt to restore a Right Object (RO) backup file, and identifying information on the RO backup file to be pre-restored in a terminal, and determining if the RO backup file can be restored according to the identified information.

Method and apparatus for preventing illegal reuse of digital right management content in portable terminal

An apparatus and method for dynamically changing a password are provided. In the method, a random number is generated, and an original password and an operator are checked. The original password is changed by performing an operation of the random number and the original password based on the operator. Accordingly, the password exposure can be prevented and the personal information and asset information can be protected without using additional devices.

Apparatus and method for dynamically changing a password

Provided are an apparatus and a method for saving a memory in a portable terminal, the method includes receiving a request for basic data and an address indicating a storage position of the basic data; determining whether the requested basic data has been stored in a paging buffer; if it is determined that the requested basic data has not been stored in the paging buffer, transforming the address of the requested basic data into an address of a corresponding compressed block using a block address table; searching the compressed basic data for the compressed block corresponding to the address of the compressed block; decompressing the searched compressed block; storing data of the decompressed block in the paging buffer; and returning the requested basic data stored in the paging buffer.

Apparatus and method for efficient memory use in portable terminal

A method and an apparatus for preventing illegal access by using a prohibit key in an electronic device, is provided. The method includes determining a variable prohibit key which is dynamically varied according to a predetermined variable factor, if a password is input to access a system, determining the existence of the determined variable prohibit key in the input password, and rejecting an access of a user to the system, if the variable prohibit key exists in the input password.

Method and apparatus for preventing illegal access using prohibit key in electronic device

Growing community of inventors

Seoul, South Korea

Woo-Gyu Lim