Abstract: A display device includes an image reading module, three processing module, and a pixel generating module. The image reading module reads pixel data of an original image and a predetermined destination image format (hereafter destination format). A first processing module calculates a horizontal shift value and a vertical shift value. A second processing module converts ratios of a length of the original image to a length of the destination format and a height of the original image to a height of the destination format to integer values. A third processing module determines which pixel in the original image to copy to each pixel position in the destination format. A pixel generating module copies pixels in the original image to corresponding pixels positions in the destination format.

Abstract: A method for managing customer premises equipment (CPE) includes the following steps. A management device generates a management request frame according to a name of a CPE and a command for the CPE to execute. The management device broadcasts the management request frame to the CPE. The CPE determines whether the management request frame is correct after the CPE receives the management request frame. The CPE executes the command in the management request frame if the management request frame is correct. The CPE reports a result to the management device. A communication system employing the method is also provided.

Abstract: A network device (20) for connecting an Ethernet terminal device (10) to a communication network (30) includes a database (23), a first transceiving module (21), a second transceiving module (26), and a destination address determining module (25). The database is used for saving a reference address. The first transceiving module is connected to the Ethernet terminal device. The second transceiving module is connected to the communication network, and is used for receiving a packet sent by the communication network and forwarding the packet. The destination address determining module is used for determining whether a destination address of the packet matches with the reference address saved in the database. If the destination address of the packet matches with the reference address saved in the database, the first transceiving module sends the packet to the Ethernet terminal device.

Abstract: A method for managing customer premises equipment (CPE) includes the following steps. A management device generates a management request frame according to a name of a CPE and a command for the CPE to execute. The management device broadcasts the management request frame to the CPE. The CPE determines whether the management request frame is correct after the CPE receives the management request frame. The CPE executes the command in the management request frame if the management request frame is correct. The CPE reports a result to the management device. A communication system employing the method is also provided.