Abstract: Disclosed are: a caster mounted on a teaching aid including a whiteboard, or furniture, etc. so as to conveniently and stably convert between a movement state and a stopping state; and a whiteboard including the caster.

Abstract: A touch sensitive display device and a method for driving the same capable of increasing the touch recognition rate of the touch sensitive display device in the sleep mode are disclosed. The touch sensitive display device supports a normal mode and a sleep mode. The display device includes touch driving lines and a touch driver to supply one or more touch driving signals to the touch driving lines. The touch driver supplies the one or more touch driving signals at a first frequency during the normal mode of the touch sensitive display device, supplies the one or more touch driving signals at a second frequency during a first portion of the sleep mode of the touch sensitive display device, and supplies the one or more touch driving signals at a third frequency during a second portion of the sleep mode of the touch sensitive display device.

Abstract: A touch sensitive display device and a method for driving the same capable of increasing the touch recognition rate of the touch sensitive display device in the sleep mode are disclosed. The touch sensitive display device supports a normal mode and a sleep mode. The display device includes touch driving lines and a touch driver to supply one or more touch driving signals to the touch driving lines. The touch driver supplies the one or more touch driving signals at a first frequency during the normal mode of the touch sensitive display device, supplies the one or more touch driving signals at a second frequency during a first portion of the sleep mode of the touch sensitive display device, and supplies the one or more touch driving signals at a third frequency during a second portion of the sleep mode of the touch sensitive display device.

Abstract: Disclosed is an anti-debugging device. In a method for performing anti-debugging by an anti-debugging device, the method comprises creating a child process; monitoring the state of a parent process by the child process; and monitoring the state of the child process by the parent process.

Abstract: Disclosed is a device for protection a program. The device includes a protection domain unit including an encrypted protection domain, a start point display unit configured to display a start point of the encrypted protection domain, and an end point display unit configured to display an end point of the encrypted protection domain; and a protection domain connection unit including a decryption unit configured to generate a running code unit by decrypting the encrypted protection domain and a protection domain calling unit configured to call the running code unit.

Abstract: Disclosed is a method for protecting a dynamic library from the static analyzer. In a method of protecting a dynamic library, the method may comprise: loading, into a main memory, an application program using the dynamic library; loading a security-responsible dynamic library into the main memory; generating a dynamic library-to-be-protected by decrypting an encrypted dynamic library stored in the security-responsible dynamic library; and calling a specific module included in the dynamic library-to-be-protected by the application program.

Abstract: In a method for verifying the integrity of first to Nth binaries (N is a natural number greater than or equal to 2), the method may comprise: loading the first to Nth binaries into a main memory in order to execute the binaries; verifying a self hash to verify, by the Kth binary (K=1, . . . , N-1) which has been loaded into the main memory, the integrity thereof by using a hash; and verifying a link hash by setting any one of the first to Kth binaries as a verification binary and setting a (K+1)th binary to be loaded into the main memory as a binary to be verified so that the verification binary verifies the integrity of the binary to be verified by using a hash.

Abstract: Disclosed is a method for providing security of a program made in a script language.

Abstract: A touch sensitive display device and a method for driving the same capable of increasing the touch recognition rate of the touch sensitive display device in the sleep mode are disclosed. The touch sensitive display device supports a normal mode and a sleep mode. The display device includes touch driving lines and a touch driver to supply one or more touch driving signals to the touch driving lines. The touch driver supplies the one or more touch driving signals at a first frequency during the normal mode of the touch sensitive display device, supplies the one or more touch driving signals at a second frequency during a first portion of the sleep mode of the touch sensitive display device, and supplies the one or more touch driving signals at a third frequency during a second portion of the sleep mode of the touch sensitive display device.

Abstract: Disclosed are methods for verifying the integrity of a dynamic code using a hash and for generating a hash registry for the verification. Provided is the method for generating a hash registry for verification of the integrity of a dynamic code using a hash, comprising: a step for setting a security tag only for a specific function which is a part of program and requires security; a binary generation step for generating a binary by compiling a source code including at least one function to which the security tag is applied; a hash code extraction step for extracting a hash code for a code block of the specific function, if the binary is searched and the security tag is detected; and a hash registry generation step for generating a hash registry including the hash codes for at least one function generated in the has code extraction step.

Abstract: A display device comprises a touch panel including a plurality of electrode columns that each includes a plurality of electrodes positioned in the electrode column. The display device further comprises a plurality of lines, each of which is connected to a corresponding electrode included in a corresponding one of the plurality of electrode columns. The lengths of the lines within a first electrode column increase as the lines are positioned further from one end of the first electrode column that is not adjacent to the second electrode column in a direction substantially perpendicular to a longitudinal direction of the lines of the first electrode column and the lengths of the lines within a second electrode column decrease as the lines are positioned further from the one end of the first electrode column in the direction substantially perpendicular to a longitudinal direction of the lines of the second electrode column.

Abstract: A display device using infrared sensor modules that is capable of reducing power consumption and extending durability of infrared light sources and sensors and a method of driving the same are disclosed. The display device includes a display panel to display images, a plurality of infrared sensor modules to optically detect a touched position on the display panel, an infrared sensor module controller to sequentially drive the infrared sensor modules and to switch the infrared sensor modules to a low-power mode when a touch operation has not been performed within a predetermined period of time or when the display panel is in a power-saving mode, and a system to provide a state of the display panel to the infrared sensor module controller.

Abstract: A display device comprises a touch panel including a plurality of electrode columns that each includes a plurality of electrodes positioned in the electrode column. The display device further comprises a plurality of lines, each of which is connected to a corresponding electrode included in a corresponding one of the plurality of electrode columns. The lengths of the lines within a first electrode column increase as the lines are positioned further from one end of the first electrode column that is not adjacent to the second electrode column in a direction substantially perpendicular to a longitudinal direction of the lines of the first electrode column and the lengths of the lines within a second electrode column decrease as the lines are positioned further from the one end of the first electrode column in the direction substantially perpendicular to a longitudinal direction of the lines of the second electrode column.

Abstract: An infrared sensor module, a touch sensing method thereof, and an auto calibration method applied to the same are disclosed, the touch sensing method includes turning on the infrared sensor module which includes a sensor block with a light receiving region and is arranged to be perpendicular to a surface of a display panel, the light receiving region being divided into m×n blocks (where, each of m and n is a natural number of two or more) arranged in m rows by n columns, each of the blocks having a plurality of light receiving pixels arranged in a row direction, scanning optical signals of each block, selecting the block having maximum output optical signals with respect to the blocks of each column, and summing the optical signals of the light receiving pixels of the block selected from the column.

Abstract: An infrared sensor module, a touch sensing method thereof, and an auto calibration method applied to the same are disclosed, the touch sensing method includes turning on the infrared sensor module which includes a sensor block with a light receiving region and is arranged to be perpendicular to a surface of a display panel, the light receiving region being divided into m×n blocks (where, each of m and n is a natural number of two or more) arranged in m rows by n columns, each of the blocks having a plurality of light receiving pixels arranged in a row direction, scanning optical signals of each block, selecting the block having maximum output optical signals with respect to the blocks of each column, and summing the optical signals of the light receiving pixels of the block selected from the column.

Abstract: A display device using infrared sensor modules that is capable of reducing power consumption and extending durability of infrared light sources and sensors and a method of driving the same are disclosed. The display device includes a display panel to display images, a plurality of infrared sensor modules to optically detect a touched position on the display panel, an infrared sensor module controller to sequentially drive the infrared sensor modules and to switch the infrared sensor modules to a low-power mode when a touch operation has not been performed within a predetermined period of time or when the display panel is in a power-saving mode, and a system to provide a state of the display panel to the infrared sensor module controller.

Abstract: A wheel for in-line skates, which enables a user to achieve a higher speed in a short period of time on a surface, is disclosed. The wheel includes a central hub having an inner ring, an outer rim, and a connector extending between the inner ring and the outer rim, a tire surrounding the outer rim, and a bearing assembly fitted in the inner ring. The central hub includes a reception cavity provided in the connector, a weight received in the reception cavity to be moved toward the outer rim portion by a centrifugal force of the wheel, and an elastic element for biasing the weight. The tire includes a central tread portion, and curved side portions disposed at both sides of the central tread portion. The curved side portions include soft portions having a coefficient of friction higher that that of the central tread portion.

Abstract: A wheel for in-line skates, which enables a user to achieve a higher speed in a short period of time on a surface, is disclosed. The wheel includes a central hub having an inner ring, an outer rim, and a connector extending between the inner ring and the outer rim, a tire surrounding the outer rim, and a bearing assembly fitted in the inner ring. The central hub includes a reception cavity provided in the connector, a weight received in the reception cavity to be moved toward the outer rim portion by a centrifugal force of the wheel, and an elastic element for biasing the weight. The tire includes a central tread portion, and curved side portions disposed at both sides of the central tread portion. The curved side portions include soft portions having a coefficient of friction higher that that of the central tread portion.