Recording interactive services

A method of controlling a digital television recorder for recording television programs including audio/video sequences, together with interactive services associated with the television programs and provided in the respective transport streams of those television programs, the method including:

• controlling a recording section of the recorder to record data onto a storage medium;
• controlling a filter of the recorder to identify from within a received transport stream data of a television program for recording;
• controlling the recording section to start, at a time set to a timer of the recorder, recording, onto the storage medium, data of the television program for recording received from the filter;
• controlling the filter to identify, from within the received transport stream, data of interactive services associated with the television program for recording;
• controlling, at a predetermined interval before said time, the filter to start acquiring said data of interactive services associated with the television program for recording and a cache of the recorder to store the acquired data of interactive services;
• and
• controlling the recording section to record, immediately prior to starting recording the data of the television program, the content of the cache to the storage medium.

A non-transitory computer-readable medium storing computer readable instructions thereon that when executed by a computer cause the computer to perform a method of controlling a digital television recorder for recording television programs including audio/video sequences, together with interactive services associated with the television programs and provided in the respective transport streams of those television programs, comprising:

• controlling a recording section of the recorder to record data onto a storage medium;
• controlling a filter of the recorder to identify from within a received transport stream data of a television program for recording;
• controlling the recording section to start, at a time set to a timer of the recorder, recording, onto the storage medium, data of the television program for recording received from the filter;
• controlling the filter to identify, from within the received transport stream, data of interactive services associated with the television program for recording;
• controlling, at a predetermined interval before said time, the filter to start acquiring said data of interactive services associated with the television program for recording and a cache of the recorder to store the acquired data of interactive services;
• and
• controlling the recording section to record, immediately prior to starting recording the data of the television program, the content of the cache to the storage medium.