Abstract:
A satellite direct radio broadcast system is provided which assembles bits of broadcast programs into prime rate increments, several of which are assembled into a frame. Frames are divided into symbols which are demultiplexed into alternating ones of a plurality of prime rate channels. The prime rate channels are demultiplexed onto a corresponding number of broadcast frequencies for transmission to a satellite. The satellite payload switches the symbols into time division multiplexed (TDM) data streams. The receivers process the TDM streams using service control headers (SCHs) provided therein by broadcast stations. The SCHs facilitate transmission of different service components within broadcast channel frames, association of a primary broadcast channel with one or more secondary broadcast channels on a frame-to-frame basis, and the transmission of multiframe bit streams, or auxiliary data throughout a broadcast channel that are independent of a service, in contiguous or non-contiguous frames.
Abstract:
A digital broadcast receiver comprising frequency specifying element for specifying a receive frequency (frequency block), content type specifying element for specifying a broadcast content type, and control element for controlling signal reception with a specified receive frequency and controlling such that a digital broadcast having a specified broadcast (program) content is identified among and selected from a plurality of digital broadcast signal according to a set of broadcast content type information. The control element, when a changed receive frequency is specified by the frequency specifying element, controls the signal reception with the new receive frequency and, if a broadcast content had been specified by the content type specifying element before the receive frequency was changed, controls such that a digital broadcast signal with the broadcast content specified by the content type specifying element is selected from a plurality of digital broadcast signals received at the new receive frequency.
Abstract:
A method for detecting the digital quality of a radio signal includes: receiving a radio signal including an analog modulated portion; digitally sampling an analog modulated portion of the radio signal to produce a plurality of samples; using a ratio between an average magnitude and an RMS magnitude of a block of the samples to compute an analog signal quality metric. Receivers that implement the method are also provided.
Abstract:
A visual radio marketing system and method d converts sound from a radio broadcast into an image. The image displays for a user and is associated with the radio broadcast. The image can be used by both the user and an advertiser to enhance marketing and consumption of a product or service advertised on a radio broadcast. The radio broadcast transmits a sound, which is captured by a microphone. Ari algorithm on the computer converts the sound into a visual waveform. A processing unit queries a data storage unit for a prerecorded visual waveform that correlates to the visual waveform. The prerecorded visual waveform is converted to an image through a conversion unit. A streaming unit streams the images, image links, and image data to the computer for display, A positioning system identifies the location of the user. The user interactively makes requests and submissions to the radio broadcast.
Abstract:
A ground station multiplexes audio digital data of a plurality of audio broadcasts, GUI data, and download audio data and transmits the multiplexed signal to a receiving side through a satellite. The receiving side displays a GUI screen corresponding to an audio broadcast. When a music information selection command is input on the display screen, an audio broadcast of a music program corresponding to the music information is selected. When a music information download command is input on the display screen, download audio data corresponding to the music information is output. The download audio data is stored to a storage device so as to download audio data corresponding to a desired music title.
Abstract:
A system and method for time-shifting a live broadcast, and facilitating the purchase of live or time-shifted broadcast content. The device records broadcast content being listened to by user, which gives the user the option to replay content. The device and method also provides a preview service that allows the user to experience fresh media content on a regular basis, even where a live signal is not available. The broadcast source broadcasts new content on a regular basis to avoid providing users with stale content. The user identifies content using the device and data is stored that corresponds to the identified content. The broadcast source or a third-party content provider uses the corresponding data to provide the identified content to the user. In addition to audio content, the device also provides and facilitates the acquisition of video, graphics, text or any other media content.
Abstract:
A ground station multiplexes audio digital data of a plurality of audio broadcasts, GUI data, and download audio data and transmits the multiplexed signal to a receiving side through a satellite. The receiving side displays a GUI screen corresponding to an audio broadcast. When a music information selection command is input on the display screen, an audio broadcast of a music program corresponding to the music information is selected. When a music information download command is input on the display screen, download audio data corresponding to the music information is output. The download audio data is stored to a storage device so as to download audio data corresponding to a desired music title.
Abstract:
Methods and apparatus for automatically distributing data and updates to wireless terminals using a point-to-multi-point network is disclosed. In one embodiment, data from a domestic source is conveyed by satellite to a remote location, where the data is then broadcast by a transmitter. The data is automatically pushed to wireless terminals located at remote construction sites around the world.
Abstract:
When a user carries out an input operation to set a program, the system controller (12) sets the program in response to a signal sent from an input section in response to the input operation. To which of the ensemble A and ensemble B the set program belongs is determined. A surface wave from the earth station or satellite waves from the two artificial satellites are processed according to the necessity according to the ensemble A or B determined by the RF tuner section (13), and are demodulated by the channel decoder (14) to fetch the ensembles A or B and other ensemble B or A for de-interleaving. The different ensembles A or B are simultaneously subjected to the process for de-interleaving, so that the time required for transmitting a program included in other ensembles A and B can be shortened.
Abstract:
A coverage area for a satellite digital audio broadcasting system is generated using a wide-area beam and at least three other beams. The other beams each have a coverage area that overlaps the coverage area of the wide-area beam. The beams may be generated by a plurality of satellites traveling in highly elliptical orbits. A frequency spectrum including four or more frequency blocks of approximately 1.5 MHz each may be used to transmit media content from the satellites on the beams. The multi-beam system can provide a content distribution blend tailored to specific regions while providing multi-regional content through out the coverage area. For example, the system provides a content distribution blend tailored to regional diversity of Europe through regional beams while providing European nullcountry agnosticnull or nullsupra-nationalnull content to all users through the wide-area beam.