should use its own timer. References External links Technical specifications and FAQ ETSI standards ETSI EN 300 231 V1.3.1 (2003–04), Specification of the domestic video Programme Delivery Control system (PDC) ETSI EN 301 775 V1.2.1 (2003–05), Specification for the carriage of Vertical Blanking Information (VBI) data in DVB bitstreams ETSI TS 102 323 V1.5.1 (2012-01), Chapter 11: "Accurate recording" and Annex A: "Example recorder behaviour" CHARACTERISTICS OF A PROGRAMME DELIVERY CONTROL (PDC) SYSTEM FOR VIDEO RECORDING (1990) "Everything you ever wanted to know about PDC" "Padding versus Accurate Recording" Original VPS invention (DPMA - German Patent and Trademark Office) German and English Television technology Teletext