5712 results about "Digital television" patented technology

A system for manually and automatically generating interactive content for integration with television programming uses existing analog or digital television programming that is entirely devoid of interactive content, or can integrate legacy interactive content with fully interactive content generated automatically and / or with authoring tools in order to provide a complete interactive experience to television viewers of current and future television programming.

A digital television (DTV) transmitter and a method of coding data in the DTV transmitter method are disclosed. A pre-processes enhanced data by coding the enhanced data for forward error correction (FEC) and expanding the FEC-coded enhanced data. A data formatter generates enhanced data packets including the pre-processed enhanced data and inserting known data to at least one of the enhanced data packets. A first multiplexer multiplexes main data packets with the enhanced data packets, and a data randomizer randomizes the multiplexed data packets. A Reed-Solomon (RS) encoder RS-codes the randomized data packets by adding first parity data, and a data interleaver interleaves the RS-coded data packets. A trellis encoder trellis-encodes the interleaved data packets, wherein the trellis encoder may be initialized when a known data sequence is inputted thereto.

A DTV signal includes frames, and the frames include data segments. Data segments are replaced by codewords which represent digital data. The DTV signals are broadcast and received by receivers. The receivers recover the digital data from the codewords in the DTV signals, for example by using matched filtering. By using long codewords, the digital data can be broadcast over a longer range and recovered by simpler circuitry in comparison to the television programming contained in the DTV signal. In one implementation, the DTV signal is an American Television Standards Committee (ATSC) DTV signal.

A method and system for modifying the look and feel of a user interface of a broadcast application program without altering the broadcast application program. In one embodiment, user interfaces are represented as a hierarchical scene including a background and several components. Within an electronic network, broadcast applications can become resident, e.g., land, on a vendor's device within the network where the device has the ability to display a user interface. The present invention provides a set of mattes that can be used to modify the visual presentation of the user interface of a broadcast application without altering the broadcast application. In this way, the vendor of the device can have some level of control regarding the way in which user interfaces are displayed on the device. Each matte controls the way in which an associated component of the user interface is displayed and how the component is combined with other components. In one embodiment, mattes can force components to become semi-transparent thereby creating certain fading effects, special effects with respect to windows in focus, special effects on windows becoming iconified, wiping effects, etc., with respect to the components of the user interface. The present invention can be implemented as a set of application programming interfaces (APIs) which can be used by an application manager of the vendor's device, e.g., a digital television receiver. The APIs would be available to broadcast applications and could be used for visual effects involving elements of an application's user interface.

The present invention describes and claims a new system and technique or method for decoupling the interpretation of broadcast content information from the display of this information. The information may exist in any of the available types, such as audio, video, or data. In addition, the information may be received in any form, such as streaming or non-streaming, combinations of the two, or even parts thereof. The decoupling and encapsulating of the broadcast content information is accomplished using a content proxy. All content information in the content proxy is accessed via an Application Program Interface. The content proxy employs a hierarchical Document Object Model (DOM) that contains Program and System Information Protocol (“PSIP”) data, that has been converted to an eXtendible Markup Language format using a conversion algorithm, broadcast content data, as well as content data or information about all of the hardware, software, and appliances connected within the networked environment. The proxy concept is applicable to the design and implementation of a Digital TV broadcast rendering device within a Digital TV Application Software Environment framework.

An antenna structure comprises an unbalanced antenna for receiving digital video broadcasting signals. The antenna is dimensioned to fit within an electronic device, such as a mobile phone. The unbalanced antenna has a radiative element and a feed line connected to a matching circuit so as to achieve two or more resonances within a DVB-H frequency range, such as 470 to 702 MHz. The physical length of the radiative element is always smaller than λ / 4 at the frequencies of interest (470-702 MHz), but the electrical length can be smaller or substantially equal to λ / 4. The matching circuit can comprise one or more LC resonators depending on the number of resonances. The resonators can be series or parallel connected between the feed line and RF circuitry for processing the broadcasting signals. The antenna can be tuned to other bands above the DVB-H frequencies for use as a diversity or MIMO antenna.