Abstract: A dental implant includes a fixture and an abutment in a body, and a head for a compaction drill is configured for implanting such an implant. The implant includes an upper abutment portion on which a denture is fixed, a fixture portion implanted in the jawbone and forming single or double threads, and a settling portion formed between the abutment portion and the fixture portion. The invention improves the stability of the implant, improves stabilization of the bone tissue affixed to the implant, effectively seals the socket from its surroundings and facilitates bonding between implant and jawbone. This is achieved because of the early healing of tissue around the implant and the greater surface area in contact with surrounding tissue. As a result, an artificial crown may be coupled with the implant during the same surgery.

Abstract: There is provided a device and method for retransmitting error-detected data in a mobile communication system. A transmitter generates S sub-codes Ci (i=0, 1, 2, . . . , S?1) from a physical layer packet (PLP) information stream using quasi-complementary turbo codes, initially transmits the first sub-code C0, and then sequentially transmits the following sub-codes each time a retransmission request is received for the initial transmission or a previous retransmission. Upon receipt of a retransmission request for the last sub-code CS?1, the transmitter transmits the first sub-code C0 and then sequentially transmits the following sub-codes each time a retransmission request is received.

Abstract: There is provided a device and method for retransmitting error-detected data in a mobile communication system. A transmitter generates S sub-codes Ci (i=0, 1, 2, . . . , S?1) from a physical layer packet (PLP) information stream using quasi-complementary turbo codes, initially transmits the first sub-code C0, and then sequentially transmits the following sub-codes each time a retransmission request is received for the initial transmission or a previous retransmission. Upon receipt of a retransmission request for the last sub-code CS?1, the transmitter transmits the first sub-code C0 and then sequentially transmits the following sub-codes each time a retransmission request is received.

Abstract: A system of a wireless local area network (LAN) based on transmit power control comprises: an access point (AP) for broadcasting a beacon frame to an area that is outside a service coverage of a first transmit power by using a second transmit power higher than the first transmit power already set when it reaches a set period, and for increasing the first transmit power if there is a request for increase of the first transmit power based on the beacon frame broadcast by the second transmit power; and a station which requests an increase in the first transmit power on the basis of the received beacon frame so as to enable the station to have an association with the AP. The increase is requested when the station receives the beacon frame broadcast from the AP with the second transmit power when the station is outside the service coverage of the first transmit power.

Abstract: In an apparatus and a method for indicating initial distance to empty (DTE) at completion of fueling, the initial DTE is calculated based on a fluctuating fuel consumption rate and is compensated by a compensation value so that DTE can be determined with more accuracy compared with an initial DTE calculated based on the fixed fuel consumption rate. The DTE to be confirmed can be thereby prevented from abruptly changing.

Abstract: An apparatus for driving a discharge display panel using dual subfield coding, which can prevent a gradient low discharge effect due to an address discharge failure by performing a subfield gradient weight design, by which a subfield gradient has a plurality of redundancies in all gradients except gradients having the lowest gradient weight and the highest gradient weight, and a dynamic dual subfield coding. The apparatus divides an image signal into frame units, obtains an input gradient of a frame from the image signal, performs a time division gradient display on the discharge display panel according to the input gradient by dividing the frame into a plurality of subfields having respective gradient weights, and has at least two subfields having a least gradient weight.

Abstract: An organic electroluminescent display device includes: a substrate having a pixel region and a non-pixel region surrounding the pixel region; a first electrode on the substrate in the pixel region; an organic luminescent layer on the first electrode; a second electrode on the organic luminescent layer; and a light-shielding means corresponding to the non-pixel region.

Abstract: A method of driving a display panel includes: quantizing a sustain pulse; and performing a sustain discharge by supplying a ramp-type sustain pulse in at least one sub-field. Accordingly, it is possible to prevent low gray-scale display deterioration due to the quantization of sustain pulses by performing a sustain discharge using a ramp-type sustain pulse.

Abstract: In a plasma display panel, a period of a sustain discharge waveform alternately applied to scan electrodes and sustain electrodes during a sustain period is varied with a display load ratio. That is, the period of the sustain discharge waveform is reduced because light caused by the sustain discharge waveform is stabilized when the display load ratio is lower. Accordingly, an idle period that is increased when the period of the sustain discharge waveform is decreased can be allocated to an address period or a reset period.

Abstract: A nano-optic device comprises a plurality of subwavelength apertures in a metal film or between metal islands. The device is adapted to shape a radiation beam transmitted there through. For example, beam shaping includes at least one of beam focusing, beam bending and beam collimating.

Abstract: A method of encrypting and decrypting a firmware used in electronic devices and an apparatus using the same. The firmware encryption method includes, receiving a predetermined special key data; generating an encryption key data from the predetermined special key data using a predetermined random number; generating an encryption data corresponding to firmware address information to be stored to a memory based on the encryption key data; and generating an encrypted firmware data by performing an XOR operation on the encryption data and firmware data to be stored in the firmware address.

Abstract: In a method of resetting a plasma display panel including a front substrate and a rear substrate separated from each other and facing each other, in which a first electrode line and second display electrode line are formed parallel to each other on the front substrate and address electrode lines are formed perpendicular to the first electrode line and the second display electrode lines, a voltage applied to the first display electrode lines is gradually increased up to a first voltage. Then, a voltage applied to the second display electrode lines is gradually increased up to a second voltage higher than the first voltage while the voltage applied to the first display electrode lines is gradually increased up to a third voltage lower than the first voltage. The voltage applied to the first display electrode lines is maintained at the first voltage while the voltage applied to the second display electrode lines is gradually decreased down to a fourth voltage lower than the third voltage.

Abstract: A plasma display panel (PDP) driver and PDP gray scale representation method for applying a sustain pulse based subfield arrangement and address light for representation of gray scales and improving representation performance of gray scales. Inverse gamma correction is performed on input image signals so as to represent inverse gamma correction gray scales corresponding to a number of sustain pulses and address light. The inverse gamma correction gray scale is inverted into a subfield based on the number of sustain pulses so as to represent the gray scale through address light and light caused by the number of sustain pulses.

Abstract: A dental implant includes a fixture and an abutment in a body, and a head for a compaction drill is configured for implanting such an implant. The implant includes an upper abutment portion on which a denture is fixed, a fixture portion implanted in the jawbone and forming single or double threads, and a settling portion formed between the abutment portion and the fixture portion. The invention improves the stability of the implant, improves stabilization of the bone tissue affixed to the implant, effectively seals the socket from its surroundings and facilitates bonding between implant and jawbone. This is achieved because of the early healing of tissue around the implant and the greater surface area in contact with surrounding tissue. As a result, an artificial crown may be coupled with the implant during the same surgery.

Abstract: A panel driving apparatus includes a first subfield data generator which converts input data of an odd frame into subfield data, a second subfield data generator which converts input data of an even frame into subfield data, an adder which adds the subfield data of the odd frame and the subfield data of the even frame, a frame memory which is subject to writing and reading of an output of the adder in response to a second clock, and a buffer memory connected to an output terminal of the frame memory, the buffer memory being subject to writing in response to the second clock and subject to reading in response to a first clock.

Abstract: A panel driving method includes performing an addressing operation in scan lines only when at least one or more subfield data to be turned on exist in the scan lines in at least one or more subfields.

Abstract: Disclosed are a PDP and a driving method thereof. A falling ramp, having the same or greater gradient as that of a falling ramp pulse applied to a Y electrode, is applied to an X electrode in part of a Y ramp falling period during which a falling ramp pulse is applied to the Y electrode. Therefore, high-rate addressing may be allowed and discharge efficiency may be improved since the maximum wall voltage may be formed within a range in which no erroneous discharge may be generated to the X and Y electrodes in a reset period.

Abstract: Disclosed is an in-line mode network intrusion detecting and preventing system coupled between a protection network and an external network, for detecting intrusion states between the networks and preventing the intrusion. The system comprises a first network processor unit for monitoring the packets communicated between the networks to collect various statistical data, and performing a packet filtering process according to a packet preventing rule and a packet sensing process according to a sensing rule; and a second network processor unit for checking payloads of the packets with reference to attack signatures to detect the attack states to one of the networks.

Abstract: Provided is an apparatus and method for generating an initial puncturing matrix from which a first sub-code is produced in a communication system. The apparatus includes a turbo encoder for generating information symbols and first and second parity symbols for the input of an information bit stream and a sub-code generator for generating sub-codes from the information symbols and the first and second parity symbols using puncturing matrices. The method comprises the steps of selecting as many information symbols as a number of columns in the initial puncturing matrix from the information symbols output from the turbo encoder, if a difference between the number Ns of selected symbols in the initial puncturing matrix and the number of the columns in the initial puncturing matrix is equal to or greater than a number of component encoders in the turbo encoder, and selecting as many first and second parity symbols as the difference.

Abstract: In an apparatus and a method for indicating initial distance to empty (DTE) at completion of fueling, the initial DTE is calculated based on a fluctuating fuel consumption rate and is compensated by a compensation value so that DTE can be determined with more accuracy compared with an initial DTE calculated based on the fixed fuel consumption rate. The DTE to be confirmed can be thereby prevented from abruptly changing.