Abstract: A portable digital television (DTV) comprises a processor, a channel and volume changing button arrangement, and a navigational button arrangement. Either or both button arrangements can be used in at least a bi-modal operation. In a first mode of operation, the button arrangements provide their normal functions, and in the second mode of operation, the button arrangements provide an interactive application interface to the user. Preferably, one of the two button arrangements is selected for the bi-modal operation. The selected button arrangement is associated with at least an optical element for lighting the button arrangement. The controller operates the optical element such that the selected button arrangement has one color in one mode of operation and has a different color in the other mode of operation.

Abstract: A portable digital television (DTV) comprises a processor and a navigational button arrangement. The processor of the portable DTV controls the navigational button arrangement to have at least a bi-modal operation. In one mode of operation, the navigational button arrangement provides a navigational interface to a user and, in another mode of operation, the navigational button arrangement provides an interactive application interface to the user.

Abstract: A method and apparatus for deploying a multi-element antenna system on a portable television signal processing apparatus. The system utilizes a plurality of spring loaded racks engaged in a pinion restrained by a rotational damper and a manual release mechanism. Each individual rack is attached to a rotational mechanism used to rotate an antenna element around an axis. The springs are compressed when the antenna is in its stored state and released via the manual release mechanism. The released rack and pinion system biases a plurality of rotational mechanisms which respectively extend the antenna elements into their deployed configuration.

Abstract: A mobile digital TV (DTV) comprises a DTV receiver, a processor, a Global Positioning System (GPS) receiver and a memory for storing a data base of transmitter frequencies and transmitter locations for particular channels. The GPS receiver provides a location for the mobile DTV to the processor. The processor monitors distances between the location of the mobile DTV and at least two of the transmitter locations for a currently selected channel. Upon detecting that the mobile DTV is closer to a particular transmitting location than the other, the processor re-tunes the mobile DTV to the transmitter frequency of the closest transmitting for the currently selected channel.

Abstract: Mobile, diversity tuned set-top boxes. The mobile set-top boxes described herein comprise a housing, a demodulator having a plurality of tuning circuits, and an antenna having antenna elements. Each antenna element inputs modulated signal to the plurality of tuning circuits in a switched manner, and the antenna elements are reticulatable with the housing to first and second positions.

Abstract: The mobile acquisition of digital terrestrial television programs in the presence of multiple transmission areas is performed by using a combination of static topology information and dynamic information within the digital stream. Static topology of the transmission cells in a particular geographic area is used to identify potential adjacent transmission cells offering the same digital terrestrial broadcast (DTB) services. Dynamic PSI information as to a particularly frequency in an identified adjacent transmission cell is acquired and used to provide seamless transition of the DTB services to the mobile video device as they move from one transmission cell to another.

Abstract: A portable digital television (DTV) comprises a processor, a channel and volume changing button arrangement, and a navigational button arrangement. Either or both button arrangements can be used in at least a bi-modal operation. In a first mode of operation, the button arrangements provide their normal functions, and in the second mode of operation, the button arrangements provide an interactive application interface to the user. Preferably, one of the two button arrangements is selected for the bi-modal operation. The selected button arrangement is associated with at least an optical element for lighting the button arrangement. The controller operates the optical element such that the selected button arrangement has one color in one mode of operation and has a different color in the other mode of operation.

Abstract: A portable digital television (DTV) comprises a processor and a navigational button arrangement. The processor of the portable DTV controls the navigational button arrangement to have at least a bi-modal operation. In one mode of operation, the navigational button arrangement provides a navigational interface to a user and, in another mode of operation, the navigational button arrangement provides an interactive application interface to the user.