| 摘要 |
To provide a special-effect-waveform generator capable of corresponding to signal formats of various television systems such as SDTV, EDTV-2, and HDTV.The special-effect-waveform generator is provided with a pulse generation circuit 11 for generating a control pulse used to generate the waveform data for constituting a special-effect waveform suitable for a signal format designated by an external unit, a basic-wave generation circuit 12 for generating the waveform data for constituting a basic wave in accordance with a control pulse supplied from the pulse generation circuit, an interpolation circuit 13 for interpolating the waveform data for constituting a basic wave generated by the basic-wave generation circuit, a selection circuit 15 for selecting either of the waveform data interpolated by the interpolation circuit and the waveform data for constituting a basic wave supplied from the basic-wave generation circuit in accordance with the signal format, and line memories 16 and 17 for rearranging the waveform data for constituting a wave supplied from the selection circuit and outputting the data as a special-effect waveform.
|
