Abstract: The present invention relates to a method for the transmission of audiovisual content and/or data to user devices without using digital television tuning resources, in that said content is encapsulated in MPEG2 private sections, subsequently multiplexed and transmitted over a digital television signal. The method uses an interactive application transmitted in a digital television signal which, when executed in the digital television receiver, extracts the MPEG2 private sections containing the audiovisual content and/or data from the digital television signal and, using a local area network (LAN) connection, forwards this audiovisual content and/or data to other user devices connected to the same local area network (LAN) as the digital television receiver. Also described is a device for the transmission of audiovisual content and/or data encapsulated in the MPEG2 private section.

Abstract: The present invention relates to a system that enables television viewers to receive an application or multimedia content in a portable device with a screen during the broadcasting of a television program, received through an interactive digital TV receiver, whether or not this receiver is connected to the Internet.

Abstract: The invention is a locally mounted light source for light activation of tooth whitening compositions. A support in the form of a bridge attached to a retractor or as part of a mouth guard has integral therewith, a small and lightweight light source, such as could be provided by one or more high-intensity LED's, though other light sources could be used. The light source may be in the form of an array, powered by either a direct electrical connection to a power supply or by battery power, for example, with a battery pack worn by the user. The light source is thus located in proximity to the tooth surfaces regardless of head movement or orientation, increasing user mobility and comfort.

Abstract: A drinking water filter assembly has a filter cartridge which includes a filter element contained in a pressure vessel for unitary disposal, the cartridge received on a base containing attachment fittings for ease in installation and replacement with limited exposure to contaminants during a filter change. A flow powered flow meter is provided which measures the quantity of flow through the filter for alerting the user to replace the filter cartridge.