| 摘要 |
PURPOSE: To verify the digital data processing on a TV screen and to simplify a verification system with use of a waveform display device in which the calculation result of the digital data fetched into a CPU is visualized (graphed), then converted into the TV video signals and displayed on the TV screen. CONSTITUTION: The digital signals obtained by an A/D converter 2 undergo the digital signal processing through a data processing circuit 4. The data under the digital signal processing are fetched into a CPU 11 via a CPU interface circuit 10. The CPU 11 turns these data into a graph, and the bit map data on this graph are recorded into a RAM 12. Then the bit map data are converted into the analog signals by a D/A converter 6, and these analog signals are converted into the TV video signals by a TV encoding circuit 5. The TV video signals are outputted to a TV via a video signal output terminal 15, and the graph that is produced by the CPU 11 is displayed on the TV screen. |
