| 摘要 |
PURPOSE:To recognize an error in the unit of packets in which the error takes place by reading a data from a mark memory and giving a mark to a display picture data corresponding to the packet in which the error takes place. CONSTITUTION:A CPU 10 makes decoding according to a program stored in a ROM 12, stores a picture data able to be displayed to a picture memory 17 via a picture display circuit 16, and the picture data is read and displayed via the picture display circuit 16 synchronously with a display timing of a display section. In this case, a data from a mark memory 20 connecting to the picture display circuit 16 is read altogether and the mark data is displayed at a position of the picture data corresponding to the packet in which the error takes place. Thus, not only the recognition of a data error is implemented to the entire pattern but also the error is recognized in the unit of packets in which the error takes place. |
