摘要:
A protocol for a peer power save mode (PPSM) in a tunneled direct link setup (TDLS) wireless network and a system therefor are provided. A station (STA) set up a TDLS link can send a frame having a power management bit set to a peer STA to enter into a power save mode (PSM). In this case, the station entering into the PSM operates in a PPSM client mode. When the peer STA operates in the PPSM client mode, the STA can operate in the PPSM access point (AP) mode or can enter into the PPSM client mode. The STA operating in the PPSM AP mode buffers data for the STA operating in the PPSM client mode and informs the peer STA of information indicating that there is buffered data by the use of a peer traffic indication frame or the like. In principle, a U-APSD procedure can be applied to the transmission of data through a direct link from the STA operating in the PPSM AP mode to the STA operating in the PPSM client mode.
摘要:
Provided are a system and method for supplying an integrated mileage service. The system includes: a member store point of sale (POS) terminal for receiving mileage accumulation or spending request data including a card number of an integrated mileage card into which a plurality of membership cards are integrated, a payment amount, and member store identification (ID) information when a customer purchases a commodity; a mileage provider server for receiving the mileage accumulation or spending request data from the member store POS terminal and accumulating or spending mileage points corresponding to the payment amount based on customer mileage information previously stored in a mileage database (DB) to generate the corresponding result data; an integrated mileage service server for receiving itemized statements of accumulation or use of mileage points and a current mileage balance of the customer, which are batch-processed at predetermined time intervals, from respective mileage provider servers, storing the itemized statements and the current mileage balance in an integrated mileage DB, and integratedly managing the stored itemized statements and the current mileage balance to provide an integrated mileage inquiry service when a plurality of mileage provider servers are used. In this system, the customer can integratedly accumulate or spend mileage points of a plurality of affiliated mileage providers by use of a single integrated mileage card.
摘要:
A localization system and method of a mobile robot using a camera and artificial landmarks in a home and a general office environment (or working zone) is provided. The localization system includes artificial landmarks having an LED flash function in an invisible wavelength band, a camera with a wide-angle lens, a module flashing landmarks attached at the ceiling and identifying positions and IDs of the landmarks from an image photographed by the camera having a filter, a module calculating position and orientation of the robot using two landmarks of the image in a stop state, a module, when a ceiling to which the landmarks are attached has different heights, a position of the robot, and a module, when a new landmark is attached in the working zone, calculating a position of the new landmark on an absolute coordinate.
摘要:
A system and method are provided for booting a computing device using a NAND flash memory. Boot code stored in the NAND flash memory is transferred to a RAM for execution by the CPU. Operating system program stored in the NAND flash memory is transferred to a system memory for execution therefrom by the CPU after system boot.
摘要:
A method of entering and modifying user data of a mobile communication terminal in a physically remote manner is provided A call is made from a mobile communication terminal to a computer or from a computer to a mobile communication terminal. Here, if a typical voice call or a simple data service call is connected, necessary data cannot be entered into the right memory area of the mobile communication terminal where said data have to be stored. In the present invention, a separate remote data update mode is set up and data and commands for transmission and entry of data are transmitted and received in this mode. According to the present invention, such data which cannot be entered by users in a direct manner to a mobile communication terminal as animation data or image data which are used for display on mobile communication terminal screen, melody data which are used for a ring tone for mobile communication terminal, game programs which are useable in mobile communication terminal, etc., can possibly be entered in addition to personal information data such as speed dial numbers since users can manipulate a data manager program already installed in the computer and thereby enter data to a mobile communication terminal and further modify them.
摘要:
A process for manufacturing nickel chloride is disclosed which is used as the raw material for manufacturing Zn--Ni coated steel plates, for electroless Ni plating industries, for electronic components, and for a high purity chemical additive Ni powder. That is, the invention discloses a process for manufacturing high purity nickel chloride (NiCl.sub.2) by utilizing a waste nickel anode which is obtained from an electroplating factory of a steel manufacturing plant. The process for manufacturing high purity nickel chloride includes the steps of: pre-treating a waste nickel anode to remove impurities adhered on the surface thereof; working the pre-treated waste nickel anode so as to provide an increased specific surface area; putting the worked waste nickel anode into an aqueous hydrochloric acid solution of 10-35% so as for the equivalence ratios of Ni, HCl and NiCl.sub.2 to be 1.0 or more, and dissolving the worked waste nickel anode at a reaction temperature of 20.degree.-80 C. so as to form an aqueous nickel chloride solution; passing the aqueous nickel chloride solution through a filter to remove insoluble materials; injecting an oxidizing gas such as air into an impurity treating tank with the pH level maintained at 2-5 so as to form Fe and Cr ions into a sludge, and carrying out a filtering; and adding an Ni powder in the amount of 0.1-2 g/l into the aqueous nickel chloride solution to remove heavy metal ions.
摘要:
A brake is disclosed which includes a disc plate is made of a first material, and an insert aperture is formed through the central portion of the disc plate. Coupling depressions are formed around the inner edge of the insert aperture, and a rivet aperture is formed in each of protrusion portions provided between the coupling depressions. A hat part is made of a second material and is inserted into the insert aperture. Coupling protrusions are provided around the outer edge of the hat part. A rivet aperture is formed in each of the coupling protrusions. Straps are disposed such that each strap passes over both the corresponding rivet aperture of the disc plate and the corresponding rivet aperture of the hat part. The rivets are inserted into the corresponding straps and the corresponding rivet apertures to fix the straps, the disc plate and the hat part together.
摘要:
Methods of manufacturing Fe and Ni-containing material and Co-containing material from petrochemical desulfurization residue containing Fe and Ni or Fe and Co, manufacturing raw material for stainless steel using the Fe and Ni-containing material, and manufacturing ferro-nickel using the Fe and Ni-containing material. The method of manufacturing Ni and Fe-containing material includes acid-treating Ni and Fe-containing residue to remove alkali therefrom; drying the residue and heat treating the residue in a temperature range from 600° C. (degree Centigrade) to 1300° C. (degree Centigrade) in a reducing atmosphere to reduce Ni and Fe oxides in the residue into metal state; leaching a resultant product obtained by the reduction using acid to selectively dissolve Ni and Fe; filtering the acid leached product to obtain a solution containing Ni and Fe ions; neutralizing the solution containing Ni and Fe ions using alkali to produce Fe,Ni hydroxide; and filtering and drying a resultant product obtained by the neutralization.
摘要:
Disclosed is a plasma nitriding surface treatment method for a gray cast iron part. In the plasma nitriding surface treatment method, a nitride layer is formed on a surface of the gray cast iron part by a selective ion nitriding treatment. The plasma nitriding surface treatment method is carried out such that the surface of the gray cast iron part is prevented from being deformed, and a reduction of the frictional coefficient of the part is prevented.
摘要:
Disclosed is a uni-body type heterogeneous material brake disk. In particular, the brake disk includes a friction part configured to be selectively in contact with a pad; and a hub joined with a bearing. More specifically, the friction part and the hub are made of heterogeneous materials through a uni-body type mold. To accomplish this, a connector connecting the friction part and the hub which are vertically spaced apart from each other is laterally spaced apart from the hub, and a bottom of the connector is connected with the hub. In doing so, an elevated platform is formed to prevent a casting from running over between the connector and the hub and an interface made of heterogeneous materials is formed in the connector.