Abstract: A portable drilling machine includes a housing; a drill chuck positioned on a front surface of the housing; a drill bit detachably coupled to the drill chuck; a driver positioned inside the housing to provide either the drill bit or the drill chuck with a rotational driving force; an anti-dust cover having a rear anti-dust cover formed in a cup shape with a drill through-hole formed in a central region of a bottom surface of the rear anti-dust cover and a front anti-dust cover formed in a tube shape to be coupled to the rear anti-dust cover, the front anti-dust cover being adapted to move towards the bottom surface of the rear anti-dust cover when acted on by pressure towards the housing and return to original position when the pressure is removed; and a retainer for detachably coupling the rear anti-dust cover to an outer surface of either the housing or the drill chuck. The rotational motion of the drill bit is not interfered with by the anti-dust cover, and the dust collection space is increased.

Abstract: A method for transmitting voice traffic in an ALL-IP-based mobile communication system. A mobile terminal first transmits header information using a signaling frame, and then separately transmits only a voice frame. A Node B detects the header information from the signaling frame received, stores the detected header information, and upon receipt of the voice frame, adds the header information to the voice frame and transmits the header-added voice frame to a core network.

Abstract: A liquid crystal display and a method of manufacturing the same include a first display panel and a second display panel that face each other, a sealant that contains polymer resin formed by curing methacrylic acid or a s derivative thereof to sealingly assemble the first display panel and the second display panel, and a liquid crystal provided in the region between the first display panel and the second display panel.

Abstract: In a display apparatus, a display panel displays images using light, and a backlight assembly provides the display panel with the light. A brightness enhancement film between the display panel and the backlight assembly enhances a brightness of the light supplied to the display panel. A diffusing adhesive layer has an adhesive material and diffusing particles added into the adhesive material to diffuse the light having come out of the backlight assembly. Thus, the display apparatus may effectively prevent a Moiré interference and improve display quality thereof.

Abstract: A viewing angle compensating plate has a first protection film, a polarizing film, a second protection film and a liquid crystal layer. The polarizing film is formed on the first protection film, and the second protection film is formed on the polarizing film. The liquid crystal layer is formed on the second protection film. The second protection film has a rate of thermal expansion and contraction that is substantially identical to that of the first protection film.

Abstract: A computer main body cooling system enables an internal temperature thereof to be maintained at a desired level by continuously venting heat generated from a CPU and a power supply through a cooling system. The computer main body cooling system according to the present invention includes a CPU, a heat sink provided adjacent to the CPU, a CPU fan located in a side part of the heat sink, a power supply supplying power to the CPU and having an air vent permitting air to flow outside, and a power supply fan mounted on the power supply adjacent to the heat sink. Thus, the structure of a cooling system is simplified and optimized, not only to increase a cooling efficiency, but also to minimize noise occurrence due to fan rotation.

Abstract: A method for performing a handoff in an ALL-IP network including at least one MS (Mobile Station) for transmitting a signaling frame having a header and a voice frame to an old BTS (Base Transceiver System), which includes a header information storage for storing overhead information for the MS in association with a unique code of the MS, and an RNC (Radio Network Controller). The MS transmits measurement information to a new BTS and the RNC to start a handoff. Upon receipt of the measurement information, the RNC requests the new BTS to set up a radio link with the MS that has transmitted the measurement information. When the radio link is set up between the MS and the new BTS, the RNC deletes header information for the MS, stored in the header information storage of the old BTS. The MS transmits a message including traffic overhead information to the new BTS. Upon receipt of the message including the traffic header information, the new BTS transmits a binding update message to the MS.

Abstract: A method for transmitting voice traffic in an ALL-IP-based mobile communication system. A mobile terminal first transmits header information using a signaling frame, and then separately transmits only a voice frame. A Node B detects the header information from the signaling frame received, stores the detected header information, and upon receipt of the voice frame, adds the header information to the voice frame and transmits the header-added voice frame to a core network.

Abstract: A customer premise network equipment and a data communication method based on a single ring configuration are disclosed. The equipment includes a plurality of subscriber terminals connected one-to-one or one-to-multiple or a broadcasting type between a network and a subscriber by a single ring, and a customer premise network terminal equipment connected by a single ring for receiving an one-to-one protocol and implementing a communication between the subscriber terminals and an access between the subscriber terminal and the network.

Abstract: A method and apparatus for transmitting and receiving data using a continuous tone control squelch system (CTCSS), which can transmit and receive data simultaneously with voice communication using the CTCSS. The apparatus is capable of transmitting and receiving a global positioning system (GPS) data signal containing a position value together with a voice signal using the CTCSS by a wireless communication terminal. Therefore, a user of the terminal can notify another party of his or her current position while conducting a voice conversation therewith. The method comprises dividing an effective frequency band of the CTCSS into regular intervals, setting the divided intervals as channels and assigning data code values respectively to the set channels. For data transmission, CTCSS frequency signals corresponding respectively to code values of specific data are successively transmitted.

Abstract: The present invention discloses a flash memory array in which four memory cells formed on a silicon substrate having a double well structure hold a source region or a drain region in common so that the area occupied by contact holes can be minimized and integration of device can be enhanced.

Abstract: The present invention relates to a broadband terminal equipment for congestion control in the ring structure and its control method, and the object of the invention is to prevent ATM traffic congestion which can be produced in the ring in order to realize the ATM subscriber premises network having a ring structure.

Abstract: A floating cell removing device using a generic flow control includes a processor having a generic flow control processing logic for transmitting/receiving a signal cell, checking a generic flow control field of an operation and maintenance cell and removing a floating cell; a pair of cell relay and add/drop function units respectively connected to a subscriber and a network of the processor, for supporting an internal communication between subscriber terminals, temporarily storing the signal cell and transmitting it to a network device; a pair of asynchronous transfer mode hierarchical function processors for converting a cell header, inserting and extracting an operation and maintenance cell, and transmitting it to the processor and the cell relay and add/drop function units; and a plurality of buffers formed between the processor and the cell relay and add/drop function units and between the cell relay and add/drop function units, for temporarily storing data inputted therefrom.

Abstract: The present invention discloses a method of fabricating a flash memory device. In the present invention, since the dielectric film formed in the memory cell region is only exposed to the cleaning solution which is used in cleaning process preformed after removing the dielectric film formed in the low voltage transistor region, the number of damages applied to the dielectric film can be minimized, therefore, a good dielectric film can be obtained.

Abstract: An asynchronous transfer mode (ATM) layer function processing apparatus with an enlarged structure is disclosed including: an ATM layer receiving cell processor for storing a cell start signal and cell input data extracted by use of a cell read clock in a buffer when a cell transmissible signal is received from an input signal of a subscriber physical layer function processor, extracting a flag according to the number of stored cells, and performing a multiplexing operation according to a scheduling algorithm using a cell interrupt signal and the extracted flag; a processor interface for forming a cell from data received from a microprocessor, storing the cell in a buffer, generating the cell interrupt signal, and controlling each constituent of the ATM layer function processing apparatus; an ATM layer transmitting cell processor for performing an input cell routing function according to an output port identifier value when a corresponding routing value and a match signal are generated from a connection table

Abstract: This invention discloses a method of manufacturing a flash EEPROM cell having a split gate structure in which source and drain regions are formed by self align method without using of an additional mask. Problems caused by that length of control gates in each cell are different from each other due to the misalignment between a mask for forming the control gate and a mask for forming source and drain regions are solved since source and drain regions are formed by self align method without using of an additional mask.