| 摘要 |
PURPOSE:To simply synchronize image data with sound data by storing the sound data in a memory together with the image data to be stored in each scanning line and using two D/A converters. CONSTITUTION:When a CRT controller 6 generates a display address, the memory 1 outputs image data. After ending the reading of image data of one scanning line, sound data are read out following the image data and the image data are converted into an image signal by the 1st D/A converter 2 and displayed on a CRT 4. During the period of blanking, the sound data are converted into a sound signal by the 2nd D/A converter 3, extended to one-scanning line time by a time adjusting circuit 7 and outputted as sound through a speaker 5. Thus, the processing of the image data can be synchronized with that of the sound data. |
