Method for generating a switching-signal in a broadcast or video receiver

Abstract

Abstract To increase the reliability of the detectability of identification data words (DW1) which are also transmitted by a transmitter during a transmission for identifying this transmission, a test circuit (14) is connected between the data separating circuit (6) and the data evaluating circuit (10) of a receiving device. In this test circuit, a separated identification data word is stored as reference data word (DW13) and compared with the subsequent identification data words (DW14...). The stored identification data word or one of the compared identification words is only forwarded to the data evaluating circuit when a predetermined proportion of coincidences is exceeded during the comparison. In the case of a coincidence with an identification data word (DW1p) stored in a desired-program store (41), the evaluating circuit forms from this a switching signal which is only switched off again when an anti-coincidence is detected during the comparison. <IMAGE>

Inventors

• 👤 Siegfried Apitz

Bibliographic Details