| 摘要 |
PURPOSE: To eliminate the trouble of updating and speedily update data by connecting each information guidance device to a center side by a line, and sending information from the center side and then updating the data of an information guidance device. CONSTITUTION: The center side is equipped with an image signal generation part 2 which generates an image signal, an image compression part 3 which compresses the generated image signal, a character signal generation part 6 which generates a character signal, an encoder part 7 which encodes the generated character signal, a storage part 15 which stores the compressed image signal and character codes, a modem 24 which sends out the compressed image signal and character codes to the line, a display part 23 which composes an image of the image signal and character signal generated by the image signal generation part 2 and character signal generation part 6 and displays the image, an input part 20 for inputting operation signals, etc., and a control part 1 which controls the respective parts. |
