Abstract: Provided is a method of obtaining an image of a disc, in which the method obtains an image of an analysis or test result object of a disc by minimizing a difference between the positionings of a magnet of the disc and a magnet of a feeding unit, and an apparatus for driving a disc, wherein the apparatus performs the method. The method includes: fixing a positioning of a disc by using magnetic attraction between a first magnet installed on the disc and a second magnet installed on a feeding unit; minimizing a difference between the positionings of the first and second magnets; and obtaining an image of an analysis or test result object of the disc.

Abstract: A disc for calibrating a measurement unit of a test device and a calibration method using the same are provided. The disc includes a calibration unit to calibrate a measurement unit of a biomaterial test device.

Abstract: An apparatus, a computer-readable recording medium, and a method of controlling data recording and reproducing to and from a disk. Controlling the recording of data includes storing password information set in a recording mode and key information to a first area of the disk, encrypting location information of the first area, storing the encrypted location information to a second area of the disk, encrypting desired data and an address of the desired data using the key information, and recording the encrypted data at the encrypted address.

Abstract: A system and method, which correctly and easily diagnose all types of failures generated in a disc drive, the system includes an interface, a system controller, a failure type diagnosis unit, and an output unit. The interface transmits an operation state information request signal to the disc drive and receives operation state information from the disc drive. The system controller transmits the operation state information request signal to the interface and generates a failure information file using the operation state information when the operation state information is received from the interface. The failure type diagnosis unit analyzes the failure information file generated by the system controller to diagnose the type of failure of the disc drive. The output unit outputs the result of the diagnosis of the type of failure under the control of the system controller.

Abstract: A flash memory in which a code for debugging an optical drive and a code for controlling the optical drive are downloaded when required, the functions of the downloaded code are subsequently executed, and the executed code is then deleted. The flash memory includes a first area where a firmware operation module that is received from an external source is executed and deleted; and a second area allocated to store a code for loading the firmware operation module that is stored in the first area, a code for executing the firmware operation module that is stored in the first area, and a firmware code.

Abstract: Provided are a disc chucking method of preventing mis-chucking from occurring according to a state and direction of a disc loaded onto a tray when the tray is closed, and a disc driving apparatus for performing the disc chucking method. The method include: opening a tray on which a disc in which a first magnet is installed is loadable; moving a feeding unit to a position where attraction between a second magnet installed in the feeding unit and the first magnet is relatively low; and if the tray is closed, placing a center of the disc in a turn table.

Abstract: Provided are a system and method for checking a state of a rotator. The system includes: a position recognition sensor that senses a position of a rotator and generates a position synchronization signal corresponding to the position of the rotator; a control unit that detects a position of a detection specimen existing in the rotator based on the position synchronization signal and generates an image photographing control signal corresponding to the detected position of the detection specimen; and a camera system that photographs an image of the detection specimen existing in the rotator based on the image photographing control signal.

Abstract: Provided is a method of obtaining an image of a disc, in which the method obtains an image of an analysis or test result object of a disc by minimizing a difference between the positionings of a magnet of the disc and a magnet of a feeding unit, and an apparatus for driving a disc, wherein the apparatus performs the method. The method includes: fixing a positioning of a disc by using magnetic attraction between a first magnet installed on the disc and a second magnet installed on a feeding unit; minimizing a difference between the positionings of the first and second magnets; and obtaining an image of an analysis or test result object of the disc.

Abstract: Provided are a method of correcting image distortion and a computer-readable recording medium including a program for executing the method on a computer. An image, distorted by uneven illumination and lens curvature of an apparatus such as a digital camera, is corrected to obtain an accurate image.

Abstract: Provided is a structure for fixing a camera module on a biodrive. The structure includes a socket fixed on a top surface of a printed circuit board (PCB) of the biodrive. The camera module is combined with the socket. A holder member is disposed over the camera module and covers the camera module. A plurality of fixing units may fix the holder member to fix the camera module on the PCB. The structure can prevent distortion and deviation of the camera module due to external shock.

Abstract: Provided are a method and/or apparatus for measuring the concentration of a detection target using the transmission or reflection of light. The system includes an illumination unit disposed over a biodisc and configured to apply light to the detection target included in the biodisc and a camera module disposed below the biodisc and configured to measure the amount of light transmitted through the detection target.

Abstract: Provided are a centrifugal force-based microfluidic device in which biochemical treatments of samples are executed, a biochemical treatment system including the centrifugal force-based microfluidic device, and a method of fabricating the centrifugal force-based microfluidic device. The centrifugal force-based microfluidic device includes a rotational platform including a unit to perform biochemical treatments of samples and a mounting hole defined within to which a turntable including a magnetic force generator is inserted; and a cap coupled to the rotational platform closing a side of the mounting hole opposite to a side in which the turntable is inserted, and including a part formed of a ferromagnetic material pulled by magnetic force generated by the magnetic force generator.

Abstract: Provided are a centrifugal force-based microfluidic device, in which biochemical treatments of samples are executed, and a method of fabricating the centrifugal force-based microfluidic device. The centrifugal force-based microfluidic device is mountable on a rotatable device and includes: a disk-shaped portion; and an inlet hole defined within, configured to receive fluid from outside the centrifugal force-based microfluidic device having a first opening with a first inner diameter, and a second opening disposed on the first opening having a second inner diameter greater than the first inner diameter, and a depth of the second opening greater than a height of a fluid droplet formable in the second opening.

Abstract: A lead free solder is provided. The lead free solder includes about 1.5 wt % to about 2.5 wt % silver (Ag), about 3 wt % to about 6 wt % bismuth (Bi), about 0.005 wt % to about 0.1 wt % of a deoxidizing agent, and a balance of tin (Sn). The lead free solder has improved wettability, a lowered melting point, little or substantially no formation of oxidation layer in a solder bath, suppressed brittleness, improved thermal shock resistance and drop resistance.

Abstract: A method of updating firmware for a product by downloading the updated firmware and automatically diagnosing download errors when processing customer requests to update the firmware. The method is provided by starting provision of the firmware file to a user device and receiving from the user device a first temporary file indicating a start of downloading the firmware file, and receiving from the user device a second temporary file completion or a failure of the download. It is determined whether the download of the firmware file is started and whether the download was a success or a failure by inspecting the received first and second temporary files and to rectify a problem that caused the failure of the download based upon the received second temporary file.

Abstract: An apparatus, a computer-readable recording medium, and a method of controlling data recording and reproducing to and from a disk. Controlling the recording of data includes storing password information set in a recording mode and key information to a first area of the disk, encrypting location information of the first area, storing the encrypted location information to a second area of the disk, encrypting desired data and an address of the desired data using the key information, and recording the encrypted data at the encrypted address.

Abstract: An apparatus, a computer-readable recording medium, and a method of controlling data recording and reproducing to and from a disk. Controlling the recording of data includes storing password information set in a recording mode and key information to a first area of the disk, encrypting location information of the first area, storing the encrypted location information to a second area of the disk, encrypting desired data and an address of the desired data using the key information, and recording the encrypted data at the encrypted address.

Abstract: A lead free solder is provided. The lead free solder includes about 1.5 wt % to about 2.5 wt % silver (Ag), about 3 wt % to about 6 wt % bismuth (Bi), about 0.005 wt % to about 0.1 wt % of a deoxidizing agent, and a balance of tin (Sn). The lead free solder has improved wettability, a lowered melting point, little or substantially no formation of oxidation layer in a solder bath, suppressed brittleness, improved thermal shock resistance and drop resistance.

Abstract: A flash memory that shares a booting function and a booting program, and an apparatus and method for protecting the same in an AT Attachment Packet Interface (ATAPI) drive. The flash memory includes a first boot zone, where a booting program is stored, a second boot zone, where a backup of the booting program is stored, and a data zone, where an executable and downloaded firmware program is stored, wherein the corresponding booting program in either of the first or second boot zones which has no error is executed when an error is detected in the alternate first or second boot zone. Accordingly, it is possible to restore a flash memory damaged due to some external cause to its original state, thereby reducing costs for replacement of the damaged flash memory.

Abstract: A flash memory in which a code for debugging an optical drive and a code for controlling the optical drive are downloaded when required, the functions of the downloaded code are subsequently executed, and the executed code is then deleted. The flash memory includes a first area where a firmware operation module that is received from an external source is executed and deleted; and a second area allocated to store a code for loading the firmware operation module that is stored in the first area, a code for executing the firmware operation module that is stored in the first area, and a firmware code.