Abstract: An interactive television system is operable to receive television signals and data for implementing interactive television services. At least some of the interactive television data received is stored on a removable, non-volatile memory, such as a memory card or stick. To allow a user to access services, the system is operable to generate a user interface. Services that are available via information stored on a memory card are marked.

Abstract: An interactive television system for displaying on a screen or monitor at least one user selectable identifier (164) associated with an audio/visual media that is available for delivery via a non-electronic channel. Selection of one of the identified audio/visual media causes an order instruction (181) for the user to be displayed, typically including a telephone number (207) that has to be used to place the order and a code (206) for identifying the user selection.

Abstract: An interactive television system having a television or TVPC or any other addressable television terminal (STB), the system being operable to use an acoustic back-link to enable communication between the television terminal (STB) and a remote service provider. The television terminal (STB) is operable to generate acoustic signals that are representative of an interactive viewer selection. These acoustic signals are forwarded to a service provider (12) via an audio telephonic link. Responses to the viewer initiated acoustic signals are forwarded from the service provider (12) to the viewer via a television network (14).

Abstract: A system for targeting adverts at viewers comprising a set box (STB) (22) having a processor that is operable to read a plurality of viewer characteristics relating to an image that is currently being viewed. These viewer characteristics typically provided by the television broadcaster or another remote data center (24). The viewer characteristics are used by the STB (22) to construct a multi-dimensional viewer profile. Each time the viewer views a television program, the information in the viewer profile is updated. In order to target adverts at specific viewers, the viewer profile is compared with a multi-dimensional target viewer profile associated with an advert. In the event that there is a sufficient match, the advert is displayed on the television screen.