Method for monitoring ACTUAL-value time data for the beginning of a television programme contribution

摘要

To monitor digital ACTUAL values, transmitted within a television signal, for the time date of the intended or fictitious beginning of a television programme contribution, it is proposed that the ACTUAL values be compared with associated digital NOMINAL values. After each change, the result of this NOMINAL/ACTUAL comparison and the associated NOMINAL and ACTUAL values are inserted for a defined time as alphanumeric graphic signal in a television signal which is recorded on a domestic video recorder.