Television transmission system.

摘要

A system for video recorder programming using existing television broadcast teletext transmissions. The programmes required are chosen from schedules displayed on teletext pages, the necessary control information is loaded automatically into a video recorder, and programme labels are transmitted to ensure that the correct programmes will be recorded even if programme timings are altered. All the control information for achieving the above are fitted into the coding structure of a teletext transmission using extension packets additional to data packets containing display data. The invention also extends to a video recorder with its own teletext decoder for processing the control information.