Abstract: A belt assembly in an image forming apparatus includes a belt which includes a guiding rail on one side, a first roller which includes a receiving part which supports the guiding rail, and a second roller which includes one end which does not interfere with the guiding rail, wherein the belt is supported and rotated by the first roller and the second roller. The intermediate transfer belt has a flatness such that image errors such as crinkles or irregular horizontal bands can be prevented.

Abstract: The present invention relates to a thin organic electroluminescent device capable of preventing permeation of oxygen or moisture. The organic electroluminescent device according to one embodiment of the present invention includes a substrate, a plurality of pixels and a planarization layer. The substrate has grooves formed at the periphery of an active area. The pixels are formed in the active area. The planarization layer covers the pixels on the substrate. The passivation layer covers the planarization layer and the grooves. Since the organic electroluminescent device includes the grooves or path extending sections, oxygen (O2), water (H2O), etc. are not permeated into the inside of a passivation layer.

Abstract: An organic electroluminescent (EL) device is provided that may include a first electrode, an organic layer and a second electrode arranged in a light-emitting region of a substrate. The device may also include a cap for sealing the light-emitting region of the substrate. The cap may have a caved surface with a minimum depth of 10 ?m and a maximum depth of 10% of a total thickness of the cap.

Abstract: A thin film deposition apparatus and a method of maintaining the same are disclosed. In one embodiment, a thin film deposition apparatus includes: a chamber including a removable chamber cover; one or more reactors housed in the chamber; a chamber cover lifting device connected to the chamber cover. The chamber cover lifting device is configured to move the chamber cover vertically between a lower position and an upper position. The apparatus further includes a level sensing device configured to detect whether the chamber cover is level, and a level maintaining device configured to adjust the chamber cover if the chamber cover is not level. This configuration maintains the chamber cover to be level as a condition for further vertical movement of the chamber cover.

Abstract: An E8-VSB reception system system is provided. A VSB receiver converts a received broadcast signal into a digital baseband signal in synchronization with a first symbol clock, converts a decision signal synchronized with a second symbol clock into a decision signal synchronized with the first symbol clock, performs channel equalizing and noise removal on the digital baseband signal using the converted decision signal, performs error correction on the noise removed signal, and outputs error-corrected data and a synchronization signal in synchronization with the first symbol clock and second symbol clock. A E8-VSB data processor receives the data and the synchronization signal in synchronization with the first symbol clock and second symbol clock from the VSB receiver, extracts enhanced data according to the synchronization signal, performs E8-VSB decoding and error correction, and outputs the decision signal synchronized with the second symbol clock to the VSB receiver.

Abstract: A digital broadcasting receiving system and an equalizing method thereof are provided. The digital broadcasting receiving system includes: a demodulator for receiving and demodulating a RF (Radio Frequency) signal into a digital base band signal through A/D (Analog-to-Digital) conversion and carrier/timing restoration; an equalizer for compensating for a channel distortion included in the digital base band signal, through a coefficient updating depending on a fed-back error value; a MLSE unit for estimating a transmission signal by using a MLSE (Maximum Likelihood Sequence Estimation) way using a correlation of past symbols for an output of the equalizer, and outputting an estimated MLSE decision signal; and an error generating unit for generating an error value from a difference between an equalized signal of the equalizer and the estimated MLSE decision signal of the MLSE unit, to feedback the error value to the equalizer.

Abstract: The present invention relates to a digital filter capable of computing a tap without output delay due to the filter operation in a symbol time, and a digital broadcasting receiver having the same. Particularly, filter output is obtained within a clock period, one multiplier and one adder are used to perform coefficient update for a plurality of taps, and the multiplier performs the output operation for each tap, whereby the number of multipliers and adders is reduced inversely proportional to the number of taps being operated for one clock period. Thus, the digital filter of the present invention can be very advantageously used for resolving the filter size problem in multi-tap filters.

Abstract: An organic electroluminescent (EL) device is provided that may include a first electrode, an organic layer and a second electrode arranged in a light-emitting region of a substrate. The device may also include a cap for sealing the light-emitting region of the substrate. The cap may have a caved surface with a minimum depth of 10 ?m and a maximum depth of 10% of a total thickness of the cap.

Abstract: A method for retransmitting data when data transmission/reception has failed in a wireless LAN system using visible light communication. A mobile node searches a received frame for a fast feedback slot allocated for retransmission information when momentary data transmission/reception failure has occurred. One mini-slot from among the plurality of mini-slots is selected from the fast feedback slot. The mobile node transmits a fast feedback message, including information for retransmission, to an access point by using the selected mini-slot.

Abstract: A method and apparatus for notifying status of an MN in a WLAN system using VLC are provided, in which an AP allocates a first predetermined number of time slots per frame as unallocated slots, for status notification of an initially accessing MN and allocates a second predetermined number of time slots per frame as reserved slots, for status notification of an initially accessing MN and uplink data transmission of an MN, and the MN transmits a visible light signal carrying status information about the MN in one of an unallocated slot and a reserved slot, if the MN initially accesses the AP.

Abstract: A belt assembly in an image forming apparatus includes a belt which includes a guiding rail on one side, a first roller which includes a receiving part which supports the guiding rail, and a second roller which includes one end which does not interfere with the guiding rail, wherein the belt is supported and rotated by the first roller and the second roller. The intermediate transfer belt has a flatness such that image errors such as crinkles or irregular horizontal bands can be prevented.

Abstract: The present invention provides an apparatus for channel equalization and method thereof, by which a digital signal received via a plurality of antennas is equalized. The present invention includes receiving digital transmission signals using a plurality of antennas, respectively, initializing equalizer coefficients and equalizing the received signals respectively, adding the equalized signals together, predicting a noise amplified in the equalizing step, and generating a final output signal by removing the predicted noise from a value resulting from adding the equalized signals together. Therefore, the present invention performs equalization using a plurality of antennas, thereby enhancing the signal to noise ratio of the final output and facilitating the equalization of the severely distorted channel.

Abstract: Disclosed is a digital filter with a combined architecture of a 4-tap real valued filter and a-tap complex valued filter, whereby the filter size is reduced and no output delay is occurred due to the filter operations. According to the present invention, the digital filter is operated either in real valued filter mode or complex valued filter mode according to a mode selection signal, a filter output is obtained within one clock according to an operation selection signal, and an operator performs operations twice within one symbol clock (i.e., a time period) unlike a related art filter in which an operator performs the operation only once for each symbol clock. Therefore, the present invention filter is capable of resolving the filter size problem by substantially reducing the number of multipliers and adders.

Abstract: VSB reception system with a frequency domain equalizer including a demodulating part for receiving, converting, and demodulating a signal, a frequency domain equalizing part for equalizing the demodulated signal for removing a distorted component from the demodulated signal, and a noise removing part for (a) receiving the equalized signal, (b) calculating a reference error signal that is a difference between the equalized signal and the signal having the noise removed therefrom, (c) calculating an error signal that is a difference between the reference error signal and the extracted noise signal, (d) renewing parameters with reference to the reference error signal and the error signal, and (e) calculating a difference between the equalized signal and the extracted noise signal, to provide a signal having the noise removed therefrom.

Abstract: An electro luminescence display device is adapted for preventing the deterioration of an organic light-emitting layer by ultraviolet rays during a sealing process, and a transparent substrate; an organic light-emitting layer formed on the transparent substrate; a packaging plate bonded with the transparent substrate by a sealant to cover the organic light-emitting layer; and a light-intercepting member to prevent ultraviolet rays illuminated onto the sealant during bonding the transparent substrate with the packaging plate from being reflected by the packaging plate onto the organic light-emitting layer.

Abstract: Channel equalizer of VSB modulation system in a digital TV receiver, including a frequency domain equalizer for equalizing a received signal to remove a distorted component from the received signal, a noise removing part for removing noise from the equalized signal, a time domain equalizer for equalizing a signal from the frequency domain equalizer or the noise removing part to remove a distorted component from the signal, and an error providing part for estimating an error required for renewal of a coefficient at the time domain equalizer by using a signal from the time domain equalizer or the noise removing part, and feeding the error back to the time domain equalizer.

Abstract: Disclosed are a channel equalizer and digital television receiver using the same. The equalizer comprises a channel estimator, a channel distortion compensator and noise canceller. The channel estimator estimates an impulse response of a transmission channel from a received signal. The channel distortion compensator transforms and processes the received signal and the estimated impulse response. The noise canceller predicts and eliminates amplified noise generated during equalization.

Abstract: Device and method for tracking a phase error in a digital TV receiver, wherein a phase noise compensated I signal is subtracted from I level reference signals of VSB signal, to obtain an error of the I signal, a sign of the Q signal having a phase noise thereof compensated is multiplied to the error of the I signal from the error determining part, to estimate a basic phase error, and a phase error compensating area is determined, a preset constant ‘?’ is multiplied to the basic phase error to provide a final phase error in the determined phase error compensating area, and the basic phase error is provided as it is as the final phase error in other areas, thereby estimating the phase error more accurately.

Abstract: The present invention relates to an organic electroluminescent device and a method of manufacturing the same for enhancing brightness of the organic electroluminescent device. The organic electroluminescent device includes a panel preventing film having the transmissibility of visible light of not less than about 50% and the transmissibility of ultraviolet rays of not more than about 5%, and attached onto the luminescent surface of a glass substrate. Here, it is desirable that the panel preventing film has the transmissibility of visible light of about 70%.