Abstract: A bobbin installation unit includes a bobbin, a film supply unit configured to supply an electrode-connecting film to the bobbin, a transfer unit configured to transfer the electrode-connecting film installed in the film supply unit to the bobbin installation unit, an adhesive tape attaching unit installed above the bobbin installation unit and configured to attach an end portion of the electrode-connecting film drawn out to the transfer unit to the bobbin. It also includes a double-sided tape attaching unit configured to attach a double-sided tape to the electrode-connecting film wound on the bobbin, and a frame body on which the adhesive tape attaching unit and the double-sided tape attaching unit are movably installed.

Abstract: Provided are a server, a system, and a method of distributing a load caused by health checks in a dynamic domain name server (DDNS) by separating a health check unit which causes the most load on the dynamic domain name server and a unit for processing a client query and registering equipment. The dynamic domain name server (DDNS) includes a main dynamic domain name server (DDNS that registers an identifier and a dynamic IP address for a piece of the equipment and responds to a client query request with the dynamic IP address of the piece of equipment; and at least one sub-DDNS for updating a status of the piece of equipment in response to a status notifying message sent from the piece of equipment.

Abstract: Provided are a server, a system, and a method of distributing a load caused by health checks in a dynamic domain name server (DDNS) by separating a health check unit which causes the most load on the dynamic domain name server and a unit for processing a client query and registering equipment. The dynamic domain name server (DDNS) includes a main dynamic domain name server (DDNS that registers an identifier and a dynamic IP address for a piece of the equipment and responds to a client query request with the dynamic IP address of the piece of equipment; and at least one sub-DDNS for updating a status of the piece of equipment in response to a status notifying message sent from the piece of equipment.

Abstract: An optical recording medium and a recording/reproducing method therefor to stably and accurately address a basic recording and/or reproducing unit (a sector or a frame) when a track pitch is decreased for recording of a large capacity of data. The general information (e.g., a variable frequency oscillator, a sector number, a sector type, and error detection information) of a corresponding sector is read from a header, which has physical pits between adjacent land and/or groove tracks, before recording or reproducing. The arrangement of the header is in the form of physical pits, with a sector structure where 2-kilobyte minimum recording units are included in a user area within a basic recording unit of 4 kilobytes, which thereby reduces overhead and facilitates the generation of a servo control signal.

Abstract: A method of detecting a frequency of a digital phase locked loop in an optical disc reproduction and/or recording apparatus, which includes (a) detecting an edge point of an input signal, (b) sampling a previous and following input signal on the basis of the detected edge point into a predetermined frequency, (c) counting a number of reference clock signals between the detected edge point and a sample which is positioned previously, adding a count value and an interval of time corresponding to the count value to obtain a frequency count value at the edge point, and (e) comparing the obtained frequency count value with a predetermined reference value, to enhance the frequency according to the comparison result can detect frequency having high resolution with only a reference clock frequency without heightening a frequency of a reference clock signal, to thereby enhance the quality of data.

Abstract: A circuit for recovering a digital clock signal and a method therefor is disclosed. The digital clock recovery circuit includes an analog-to-digital (A/D) converter and asymmetry corrector for converting a received analog signal into digital data and providing corrected digital data corrected by a binarization level which traces the center value of the received signal, a frequency error detector for detecting a frequency error from the corrected digital data, a phase error detector for detecting a phase error from the corrected digital data, and a digital low pass filter (LPF) for providing the frequency error and the phase error as a control voltage.

Abstract: An apparatus for correcting asymmetry existing in a reproduction signal corrects the asymmetry by signal-processing the reproduction signal from an optical disk in digital form. The asymmetry correction apparatus changes the threshold values for counting the sign bits of the reproduction signal and the asymmetry correction values although discontinuous intervals exist on the optical disc, thereby providing an effect of easily varying an adaptive speed with respect to the discontinuous signal.

Abstract: A data reproduction apparatus for an optical disc system is provided. Included is an analog-to-digital converter (ADC) for sampling an input RF signal and outputting the sampled result, an adder for adding the sampled signal and an asymmetry correction signal. The added signal is output. A blank/defect detector is provided for generating a blank detection signal if no change in data is detected from the added signal during a predetermined interval of time. A correction signal generator is provided for calculating a digital sum value (DSV) from the received added signal, generating an asymmetry correction signal based on the calculated DSV, and outputting the generated asymmetry correction signal to the adder. A waveform equalizer is provided for waveform-equalizing the added signal. A decoder is provided for decoding the waveform-equalized signal and outputting the result.

Abstract: An allocating method of allocating a run length limited (RLL) code having enhanced direct current (DC) suppression capability, modulation and demodulation methods, and a demodulation apparatus are provided. In order to control DC suppression, a pair of code groups having suppression controlling capability are allocated, and a (1, 8, 8, 12) code having DC suppression capability, in which a code word of the pair of code groups has the sign of code word sum value (CSV) parameter, which represent DC value in a code word, and the characteristic of an INV parameter, which predicts the transition direction of digital sum value (DSV) of the succeeding code word, both opposite to those of the code word which belongs to the other code group and corresponds to the same source code, is used and is appropriate to high-density optical disc system.

Abstract: A method of generating a run length limited (RLL) code having improved direct current (DC) suppression capability and modulation and demodulation methods of the generated RLL code. According to the method of generating the RLL codes, code words that satisfy a (d, k) run length constraint are generated.

Abstract: Modulation code encoder/decoder for a (2,9) RLL modulation code are provided. The modulation code encoder includes a serial-to-parallel converter, a controller, an inverter, a first and second memory and a multiplexer, and the modulation code decoder includes a serial-to-parallel converter, a controller, an inverter, a first and second memory, a first multiplexer, a delay circuit, a selection signal output portion, a second multiplexer and a parallel-to-serial converter. The modulation code encoder/decoder can be applied to a magneto-optical disk, magnetic tape and hard disk drive (HDD) in which high-density recording is required since the error correction capacity is enhanced by providing a decoder which performs an overlapped decoding operation with respect to the (2,9) RLL modulation code.