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Distribution network automatic system based on broadband wireless communication and realization method thereof

The invention provides a distribution network automatic system based on broadband wireless communication and a realization method thereof. The distribution network automatic system comprises a distribution transformer data collecting and monitoring device, a broadband wireless communication network and a monitoring center, wherein the distribution transformer data collecting and monitoring device is arranged in a transformer site for collecting and processing electric power parameters, transmitting data to the monitoring center by the broadband wireless communication network so as to responds to a control command sent by the monitoring center. In the realization method, the distribution transformer data collecting and monitoring device is connected with the monitoring center by the wireless communication network, a protocol in coincidence with electric power 101 protocol for the data transmission is set; and the distribution transform data collecting and monitoring device collects and processes the existing distribution transform parameters of the distribution transformer and responds to the control command from the monitoring center. The invention adopts a modular system architecture design, has upward and downward compatibility, and can realize various wireless broadband module communication services; in addition, the design of stipulations of an agreement of the monitoring center is based on the electric power 101 protocol and is compatible with protocols realizing different versions.
Owner:BEIHANG 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
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