Description

PDC (Program Delivery Control) is a signal intended for controlling VCRs. It is used only with the PAL standard and it is received as part of WST (World Standard Teletext). PDC is used to control VCR recording by informing a PDC-equipped VCR when a particular program starts and ends.VPS (Video Program System) is an earlier scheme for controlling VCR recording. VPS is used only with the PAL st