摘要:
A media access control method in a wireless local area network is provided. The media access control method includes assigning a QoS (quality of service) slot to each of mobile terminals which request a transmission of a voice frame by exchanging frames for ensuring QoS between the mobile terminals and an AP (access point) which is connected to the mobile terminals through a wireless link, dividing a unit time interval of the wireless link for the transmission of the voice frame into time intervals each of which corresponds to the least common multiple of generation periods of the voice frames of the mobile terminals, dividing the divided time interval corresponding to the least common multiple (QoS frame transmission intervals), and assigning each QoS slot to each of the QTX-INTs and transmitting the voice frame from each of the mobile terminals through the QoS slot.
摘要:
Coffee maker and microwave oven, and method for controlling the same, the coffee maker and microwave oven including a cabinet forming an exterior, a cooking chamber in the cabinet, an outfit room in the cabinet for mounting various electric components on an inside thereof, a case at one side of the outfit room for mounting a water tank, a heater, a funnel, a water supply pipe, and a water supply tube on an inside thereof for extraction of coffee, a fan for preventing transmission of heat from the heater to the electric components, and a control unit for putting the fan into operation after the extraction of coffee is completed, thereby preventing transmission of heat from the heater to the outfit room.
摘要:
An improved process for forming LDD MOS devices is disclosed herein. According the embodiments of the present invention, the LDD MOS structure can include a gate oxide and a gate electrode formed in a recessed region of a semiconductor substrate. The recessed region may be formed by selectively removing a nitride layer on the substrate to form an opened area for the gate, and then etching the exposed substrate surface by the opened area until a predetermined depth is reached. The depth of the recessed region may be controlled in consideration of the profile of lightly doped drain regions. Among the advantages of embodiments of the present invention are substantial prevention of the GIDL and reduction of parasitic capacitance as compared to conventional LDD MOS devices.
摘要:
The present invention relates to a recording medium such as a CD or a DVD in which data is recorded in high-density, and method and apparatus for reproducing data recorded in the high-density recording medium. According to an embodiment, the data reproducing method according to the present invention converts a high-frequency signal reproduced from the recording medium into a plurality of binary signals through comparing the reproduced signal with two or more slicing levels which are different each other, selects one of the plurality of binary signals or a periodic pulse signal based on the difference magnitude between the plurality of binary signals, synchronizes a reference clock with the selected signal, and restores the selected signal into bit stream using the synchronized reference clock.
摘要:
An optical payment transceiver and an optical settlement system using the same uses a personal portable terminal incorporated with an optical transceiver as a card substitute payment unit for settlement. Here, card information is incorporated in a personal portable terminal incorporated with an optical transceiver such as a portable phone or a PDA and the optical transceiver is connected to a card inquiry machine to thereby optically transmit and receive card information. The card inquiry machine recognizes the received card information in the same manner as that of the card reader reading a magnetic card, and transmits the card information to a VAN company server or a card company server, to then request for an approval and settle transactions. The present invention is applied to most fields where financial transactions are performed as in a general commerce, a toll gate fee or tunnel passage fee collection system, a subway or bus fare levying system, a gas station, a department store, a drive-thru ordering system, a vending machine, and a fee payment system of kiosks. Also, the present invention can be applied to an entrance/exit security system requiring personal identification. Thus, the present invention can use a portable terminal as a payment unit without carrying a cash or cards, to thereby provide an effect of performing a safer and more reliable credit transaction.
摘要:
An efficient means for loading a heavy cargo on a pallet/platform, putting the loaded platform into a flat rear cargo space of a van, mini-van, station wagon, SUV, or truck, securing the cargo in transit while protecting the floor, unloading the platform from the vehicle at the destination, moving the loaded platform on the ground and unloading the cargo off the platform uses a three-belt winch system. A matched pair is used to load and unload the loaded platform with removable casters by lifting its front end over the rear bumper, tipping to level and sliding into the securing position for traveling. The third belt is used to unload the platform and load the cargo onto the platform.
摘要:
A rechargeable battery and a method of forming the rechargeable battery. An electrode assembly includes a first electrode and a second electrode, and a separator disposed between the first electrode and the second electrode to prevent a short circuit between the first electrode and the second electrode. A first electrode tap is formed on an end portion of the first electrode and a second electrode tap is formed on an end portion of a second electrode, each end portion being absent active materials. A can is adapted to receive the electrode assembly and have the electrode assembly welded to an inner side of the can. A cap assembly surrounded by a gasket insulates the cap assembly and seals an opening of the can.
摘要:
A T-shaped squeegee for any smooth surface, contoured or flat, comprises a thin elastic cleaning element with two parallel cleaning edges, a supporting curved and protruding rigid blade that can produce continuously varied curvature by changing the angle of attack, a handle, and holder that connect the blade and the handle. This combination of thin elastic cleaning element with channel shaped cross-section and contour matching ability of the blade provides sufficiently high contact pressure on a wide curve for removing tightly adhered dirt, efficiently.
摘要:
A PEG-polypeptide homodimer complex, which comprises a PEG linker and two molecules of a physiologically active polypeptide, wherein the two molecules of the physiologically active polypeptide are connected via the PEG linker, and each of the two molecules of the physiologically active polypeptide is modified with one molecule of PEG, is useful for the development of a polypeptide drug having a prolonged half-life in the blood.
摘要:
An LED diode package includes a heat connecting part for mounting a light emitting part on an upper surface thereof, frames electrically connected to the light emitting part while holding the heat connecting part and a molded part fixing the heat connecting part and the frames together. The light emitting part generates light in response to current applied thereto, and the upper surface of the heat connecting part is protruded beyond an upper surface of the molded part to a predetermined height. This can optimize the unique beam angle of the light source thereby to maximize lighting efficiency as well as prevent overflow of the encapsulating material in the assembling process of the lens, which may otherwise soil adjacent components.