Abstract: A timing error compensation system in an OFMD/CDMA communication system includes an analog-to-digital converter for converting an OFDM signal, comprised of a data symbol stream in which a pilot symbol is inserted at intervals of a prescribed number of data symbols, received from a transmitter, to a digital OFDM symbol stream by prescribed sampling synchronization, a guard interval remover for removing a guard interval inserted in the OFDM symbol by prescribed frame synchronization, and a fast Fourier transform (FFT) device for performing fast Fourier transform on the guard interval-removed OFDM symbol and outputting a data symbol stream. In the time error compensation system, a pilot symbol detector receives the data symbol stream and detects the pilot symbols inserted in the data symbol stream at prescribed intervals.

Abstract: An apparatus and method for acquiring a pilot channel in a code division multiple access (CDMA) system. A signal strength detector detects signal strength values for all pseudo-random noise (PN) hypotheses from a despread received signal. A PN hypothesis selector selects PN hypotheses whose detected signal strength values are greater than or equal to a particular threshold. A searcher controller sorts the selected PN hypotheses in order of a high signal strength value, and generates PN sequences in the order of the high signal strength value. A PN sequence generator generates PN sequences for the PN hypotheses. A PN mask shifts a signal output of the PN sequence generator to a position of a PN hypothesis, according to signal strength.

Abstract: A PN sequence phase searching apparatus in a multi-carrier CDMA mobile communication system. At least two PN sequence phase searchers search for the PN sequence phase of one of at least two different band input signals on different assigned search conditions and output PN phase and energy information. A controller assigns the different search conditions to the PN sequence phase searchers and determines a minimum phase variation period based on the PN phase and energy information received from the PN sequence phase searchers.

Abstract: A plasma display panel is provided, including lower and upper substrates separated from each other to form a discharge space therebetween. A plurality of partitions are provided between the lower and upper substrates to partition the discharge space to define the discharge cells, and a plurality of first and second discharge electrodes generate a discharge within the discharge cells. A plurality of fluorescent layers are provided to inner surfaces of the discharge cells, each of the fluorescent layers being exited by the discharge to generate visible rays of light, and a plurality of light shielding elements are provided to the upper substrate to prevent external rays of light from entering the discharge cells, wherein a plurality of light focusing elements provided to the upper substrate focus the visible rays of light generated in the discharge cells and emit the visible light.

Abstract: In a non-invasive body component measuring apparatus for measuring a concentration of a body component in a measuring portion of a living body, and a method of non-invasively measuring the concentration of the body component, the non-invasive body component measuring apparatus includes a light source unit for generating light of a predetermined wavelength and for applying the light onto the measuring portion, a detection unit for detecting light reflected or transmitted by the measuring portion and for converting the detected light into an electrical signal, a signal processing unit for processing the electrical signal, and a body-apparatus interface unit for fixing a periphery of the measuring portion during measurement.

Abstract: Provided are an energy recovery apparatus and method for recovering energy in a plasma display panel (PDP) at improved efficiency using a single energy storage device and a small number of devices regardless of the number of pixels that become conductive as a result of the screen state. The energy recovery apparatus includes a first closed circuit, which supplies predetermined source voltage to pixels for conduction according to a predetermined switching sequence; a second closed circuit, which uses a single energy storage device to recover energy discharged from the pixels that have been charged by the first closed circuit; and a third closed circuit, which transfers the energy stored in the energy storage device to pixels for conduction according to the predetermined switching sequence.

Abstract: A blood component measuring apparatus includes a fixing apparatus for fixing a body part of an examinee, the body part including a tissue to be examined, a light source portion for radiating light onto the tissue to be examined, the tissue to be examined covering the light source portion, a photodetector for detecting light passing through the tissue to be examined, the photodetector facing the light source portion, and an analyzer for analyzing the light detected by the photodetector, wherein the fixing apparatus includes first and second fixing members for fixing first and second portions of the body part, respectively, the first and second portions of the body part being connected to the tissue to be examined, wherein the first and second fixing members are operable to move depending on a location of the tissue to be examined.

Abstract: A highly-efficient device and method for driving a plasma display panel, by which the voltage stresses of circuit elements, which constitute the driving device, are significantly reduced, and power consumption and heat emission are accordingly reduced. Charging and discharging modes, which constitute a sustain mode, are divided into two first and second charging modes, which are pre-charging and post-charging modes, and two first and second discharging modes, which are pre-discharging and post-discharging modes, respectively. The plasma display driving device is designed so that the two charging modes form different resonance paths passing through different inductors, and the two discharging modes also form different resonance paths passing through different inductors. Consequently, voltage stresses applied to the elements of the driving device are halved.

Abstract: Provided are a plasma display panel (PDP) device using a sub-field mode and a method of driving the PDP device. The method of driving the PDP includes allocating a first event pulse for generating an even number of light pulses or a second event pulse for generating an odd number of light pulses to each sub-field, and outputting sustain pulses, which generate light pulses, according to the allocated event pulse. Thus, linearity of the gray level can be improved and an image quality can be improved.

Abstract: An apparatus and method for receiving a packet data control channel in a mobile communication system that transmits packet data and has the packet data control channel for transmitting control information related to transmission of packet data are provided. A receiver receives and despreads a signal on the packet data channel and a signal on the packet data control channel, separately outputs the signals, and estimates a noise of a received signal. A signal level detector receives a noise estimation value and samples of the packet data control channel signal from the receiver, and outputs a validity signal for detecting whether information is received over the packet data control channel. A packet data control channel decoder decodes the packet data control channel signal if the validity signal received from the signal level detector is valid.

Abstract: An apparatus for receiving data through channels in a communication system including a first channel for transmitting control information related to a second channel and the second channel for transmitting packet data, the apparatus comprising: a first channel decoder for decoding the first channel and outputting control information; an active Walsh mask storing section for storing a Walsh mask acquired from the control information; a second channel decoder for decoding the second channel using the Walsh mask stored in the active Walsh mask storing section and outputting a decoding result; and a control unit for changing the Walsh mask to a previous Walsh mask if a Walsh mask error is determined according the decoding result.

Abstract: An apparatus and method for automatically adjusting a gradient of a reset ramp waveform of a plasma display panel in order to automatically adjust a ramp waveform generated in a reset period contributing to deviation adjustments between circuit components and between panels are provided. The apparatus manufacturing process is simple and the reset ramp waveform gradient is automatically adjusted, without manually adjusting the reset ramp waveform gradient, by sensing image information related to a gradient adjustment of the reset ramp waveform of the plasma display panel through a sensor and automatically generating a ramp waveform of a most suitable gradient based on the sensed image information.

Abstract: Provided are an apparatus and a method of driving a high-efficiency plasma display panel for quickly eliminating a free-wheeling current, generated due to the parasitic effect in an energy recovery circuit, thereby improving energy recovery efficiency.

Abstract: Provided are an energy recovery apparatus and method for recovering energy in a plasma display panel (PDP) at improved efficiency using a single energy storage device and a small number of devices regardless of the number of pixels that become conductive as a result of the screen state. The energy recovery apparatus includes a first closed circuit, which supplies predetermined source voltage to pixels for conduction according to a predetermined switching sequence; a second closed circuit, which uses a single energy storage device to recover energy discharged from the pixels that have been charged by the first closed circuit; and a third closed circuit, which transfers the energy stored in the energy storage device to pixels for conduction according to the predetermined switching sequence.

Abstract: A highly-efficient device and method for driving a plasma display panel, by which the voltage stresses of circuit elements, which constitute the driving device, are significantly reduced, and power consumption and heat emission are accordingly reduced. Charging and discharging modes, which constitute a sustain mode, are divided into two first and second charging modes, which are pre-charging and post-charging modes, and two first and second discharging modes, which are pre-discharging and post-discharging modes, respectively. The plasma display driving device is designed so that the two charging modes form different resonance paths passing through different inductors, and the two discharging modes also form different resonance paths passing through different inductors. Consequently, voltage stresses applied to the elements of the driving device are halved.

Abstract: An apparatus and method for automatically adjusting a gradient of a reset ramp waveform of a plasma display panel in order to automatically adjust a ramp waveform generated in a reset period contributing to deviation adjustments between circuit components and between panels are provided. The apparatus manufacturing process is simple and the reset ramp waveform gradient is automatically adjusted, without manually adjusting the reset ramp waveform gradient, by sensing image information related to a gradient adjustment of the reset ramp waveform of the plasma display panel through a sensor and automatically generating a ramp waveform of a most suitable gradient based on the sensed image information.