Patent ID: 7954120

Claim:
A method of analysis of the audience for channels selectable by a channel selector device for presentation on a presentation device, the channel selector device providing data to a data processor indicating which channels are selected and the lengths of time for which selected channels remain selected, the method comprising: subjecting the data relating to the lengths of time for which channels remain selected to a capping procedure, whereby the indicated length of time for which a channel remains selected is reduced to a capped maximum permitted length of time if the indicated length of time exceeds the maximum permitted length, to provide capped data; wherein respective capped maximum permitted lengths of time are provided for respective selectable channels, so that different capped maximum permitted lengths are applied to data relating to different channels, and wherein respective capped maximum permitted lengths of time are provided for respective time of day periods at which a channel is selected, so that different capped maximum permitted lengths are applied to data relating to channels selected in different time of day periods, and wherein respective capped maximum permitted lengths of time are provided for respective days of the week on which a channel is selected, so that different capped maximum permitted lengths can be applied to data relating to channels selected on different days of the week.