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1177results about How to "Increase transfer speed" patented technology

High-speed wireless LAN system

A high-speed wireless LAN system is disclosed. The system includes a mobile station for transmitting / receiving data encrypted by a predetermined encryption method, communicating the data to associated access points by an ultra wide-band (UWB) communication method, and communicating an encryption key according to the encryption method to said associated access points by an optical or infra-red (IR) communication method; the plurality of access points, installed in a plurality of predetermined service areas, for relaying between the mobile station and a gateway of a remote place by communicating the data and the encryption key with the mobile station located in the corresponding service area by the UWB and the optical or IR communication methods and transmitting / receiving the data and the encryption key to / from the gateway by an optical communication method; and the gateway for providing an optical interface between an internal network and an external network, being provided with a plurality of gateway sub-modules for transmitting / receiving the data and the encryption key by communicating with the plurality of access points by the optical communication method, and transmitting a subscriber service transmitted from the external network to the corresponding access point.
Owner:SAMSUNG ELECTRONICS CO LTD

Graphene, silver phosphate and titanium dioxide dual-functional composite and method for preparing same

The invention discloses a graphene, silver phosphate and titanium dioxide dual-functional composite and a method for preparing the same, and belongs to fields of photocatalysis technology, biological antibiosis and water pollution control. The method includes steps of ultrasonically treating oxidized graphene in water to obtain oxidized graphene dispersion liquid; dissolving silver phosphate in deionized water, adding the deionized water with the silver phosphate into the oxidized graphene dispersion liquid under the condition of stirring, and then stirring the oxidized graphene dispersion liquid to obtain mixed solution A; ultrasonically dispersing P25 in deionized water to prepare dispersion liquid, dripping the P25 dispersion liquid into the mixed solution A under the condition of magnetic stirring, and then stirring the mixed solution A to obtain mixed precursor solution B; and dripping phosphate solution into the mixed precursor solution B, then continuing stirring the mixed precursor solution B, shifting the mixed precursor solution B into a hydrothermal reaction kettle to enable the mixed precursor solution B to react so as to obtain a product, cooling the product to the room temperature, centrifuging the product, then washing the product and performing vacuum drying for the product to obtain the composite. The prepared composite not only can quickly degrade organic pollutants with certain concentration when irradiated by visible light, but also has broad-spectrum and efficient bactericidal activity for various bacteria.
Owner:JIANGSU UNIV

Display device and semiconductor device

A display device of high definition, multiple colors and low power consumption includes a display panel having a pixel section in which pixels are arrayed in the form of a matrix at the cross points of a plurality of data lines and a plurality of scanning lines, a scanning circuit for applying voltage sequentially to the plurality of scanning lines, and a data-line driver, which receives display data supplied by a host device, for applying signals corresponding to the display data to the plurality of data lines. Provided external to the display panel is a controller IC having a display memory for storing display data corresponding to the pixel section, an output buffer for reading data out of the display memory and outputting this data to the display panel, and a controller for controlling the display memory and output buffer and communication with the host device. The display panel is provided with a digital / analog converter, which forms part of the data-line driver, for converting display data represented by a digital signal to an analog signal. The width of a bus for data transfer between the controller IC and data-line driver of the display panel is such that data of a greater number of bits is transferred in parallel by a single transfer than is transferred by the bus between the controller and the host device. This allows the operating frequency of the data-line driver to be reduced.
Owner:HANNSTAR DISPLAY CORPORATION

High-speed wireless LAN system

A high-speed wireless LAN system is disclosed. The system includes a mobile station for transmitting / receiving data encrypted by a predetermined encryption method, communicating the data to associated access points by an ultra wide-band (UWB) communication method, and communicating an encryption key according to the encryption method to said associated access points by an optical or infra-red (IR) communication method; the plurality of access points, installed in a plurality of predetermined service areas, for relaying between the mobile station and a gateway of a remote place by communicating the data and the encryption key with the mobile station located in the corresponding service area by the UWB and the optical or IR communication methods and transmitting / receiving the data and the encryption key to / from the gateway by an optical communication method; and the gateway for providing an optical interface between an internal network and an external network, being provided with a plurality of gateway sub-modules for transmitting / receiving the data and the encryption key by communicating with the plurality of access points by the optical communication method, and transmitting a subscriber service transmitted from the external network to the corresponding access point.
Owner:SAMSUNG ELECTRONICS CO LTD
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