Abstract: A satellite transponder switch (STS) maintains a table that maps set-top boxes (STBs) to carrier frequencies. The STS receives a first request from a first STB for a first transponder band and a second request from a second STB for a second transponder band. The STS accesses a first satellite feed and polarity based on the first request, and a second satellite feed and polarity based on the second request. The STS band-pass filters the first and second transponder bands from the first and second satellite feed and polarity, respectively. The STS frequency shifts the first transponder band to a first carrier frequency assigned to the first STB and the second transponder band to a second carrier frequency assigned to the second STB. The STS outputs a signal that comprises the frequency-shifted first and second transponder bands to the first STB and the second STB.

Abstract: A method and apparatus for broadcasting in a satellite communication system includes uplinking first uplink signals using a primary site, determining a switchover event and determining a primary site switch time. The primary site switch timer is determined along with a diverse site switch timer that is after the primary switch time. The uplink signal is discontinued from the primary site and the uplinking second uplink signals from the diverse site.

Abstract: A method and system for operating a satellite communication system with regional redundant sites and a central site includes a satellite and a regional site uplinking regional uplink signals to the satellite and condition signals to a terrestrial communication link. The satellite generates regional downlink signals from the regional uplink signal. A central site receives the regional downlink signals from the satellite and terrestrially receives the condition signals and generates control signals for the regional site through the terrestrial communication link.

Abstract: An apparatus and method for combining multiple simultaneous sources to multiple exhibitor receivers in a secure manner is disclosed. An exemplary system includes a plurality of live event sites each producing and transmitting a live video source. A live event director system is used for receiving and combining each transmitted live video source in an overall transmission and transmitting the overall transmission for exhibition. A network operation center coordinates encryption of the overall transmission at the live event director system and decryption of the overall transmission by at least one authorized exhibitor site. In further embodiments, the live event sites selectively transmit high bandwidth signals to reduce bandwidth usage.

Abstract: The present invention relates to one- or two-way Direct-To-Home (DTH) satellite communications systems which broadcast high bit rate wideband television and multimedia content to user terminals located within a desired coverage area and, more specifically, a single or multi-transponder Direct-To-Home satellite communications system in which a high bit rate wideband data stream is comprised of real-time, statistically multiplexed information and non-real-time information that is transmitted to a subscriber media gateway device for storage and later use. The user terminal contains a specially designed receiving system and may contain a transmitter for transmission of a return data channel to the Broadcast Center.

Abstract: Disclosed in one embodiment is the use of a terrestrial media access control (MAC) chip or circuit in a satellite modem. The satellite modem comprises a satellite receiver, a satellite transmitter, an adaptor, and a terrestrial MAC chip. The adapter translates between the satellite physical layer and the physical layer of the terrestrial MAC chip. Protocols, messaging and signaling is spoofed for the terrestrial MAC chip such that it can be integrated into a satellite system. The received satellite signal is filtered so select one or more sub-channels that are fed to the terrestrial MAC chip. The terrestrial MAC chip could use a variety of physical layers, for example, Data Over Cable Service Interface Specifications (DOCSIS) or World Interoperability for Microwave Access (WiMAX).

Abstract: A system and method for collecting viewership data. The inventive system (10) is adapted to receive a signal having multiple channels of program content and associated channel identification information. The system (10) is adapted to parse the program content and channel identification information from the received signal. The system (10) outputs selective channels of program content in response to user input and the parsed program content. The system (10) monitors the selected channels and provides viewership data with respect thereto. The viewership data includes channel identification information.

Abstract: A system and method is disclosed for providing a reverse channel to enable interactive communication between a DBS subscriber and DBS service provider. The addition of an interactive return channel overcomes the problems associated with existing audience measurement systems as well as the problems associated with existing DBS signal security techniques.

Abstract: A system for the efficient distribution of live and stored audio/video streams to multiple subscribers without degrading normal data delivery services. The system segments one or more frequency bands into sub-bands, or channels, each of which is capable of carrying encoded audio, video, and other data streams, to a plurality of subscribers. Each channel transmitted in the system provides full-duplex operation so that each subscriber may indicate what specific services are desired, such as audio/video broadcast, two-way data transfer, video library access, pay-per-view video, interactive video, and audio file transfer. A transmission headend facility (‘hub’) broadcasts multiple channels of video/audio data (e.g., Internet data) in unicast mode via a shared media transmission facility to multiple subscribers. Simultaneously, selected video/audio/data is transmitted in Internet Protocol multicast mode over one or more channels of the segmented frequency band.

Abstract: A satellite television ground system, particularly for a make or break satellite television signal system, includes an outdoor unit and an indoor unit that are in communication with each other via a single coaxial cable and an optional separate single conductor for power. The satellite television ground system is operative to measure and reverse frequency conversion errors utilizing DSP techniques, allowing for more precise generation and transmission of uplink signals from the satellite television ground system. Control data for the system is sent via a low data rate connection on a power cable thereof, or by a narrowband signaling channel via a coax cable. The system also utilizes a single reference oscillator to drive the various frequency synthesizers and the like. The satellite television ground system utilizes related oscillators for the uplink and downlink sections.

Abstract: The present invention relates to a satellite IP multicasting system and method for constructing an IP multicast network by a unit of internet node having a router for subscriber connection or a switch, and for transmitting a multicasting packet transmitted from a content provider into a local IP multicast network via a satellite. The satellite IP multicasting system features a backbone network, a content provider, a satellite network and a local network.

Abstract: In case of the occurrence of reception failure due to rain and the like during the broadcast of a reserved program, all or part of the reserved program is not successfully received.

Abstract: A satellite payload architecture for interactive data distribution and broadcasting services preferably for use in the emerging EHF (20-60 GHz) frequency bands. The system allows many individual service-program providers to transmit their service-program data to the satellite, on a bandwidth-on-demand and as-needed basis, directly from their premises through low-power, low-cost broadcast satellite terminals. The satellite payload utilizes high-gain spot beams for low-cost uplinking, digital regeneration and multiplexing of the individual received service-program data into MPEG transport streams, and broadcasting these in a DVB-compatible format via full-area broadcast beams to very small, low-cost end-user satellite terminals. All end-user satellite terminals are also equipped with transmit capability of a reverse-channel in support of interactivity-communications and network signaling/control functions.

Abstract: A system in which a personal computer sends messages into a TCP/IP network using a conventional dial-up link and downloads data from the TCP/IP network using a high-speed one-way satellite link. A preferred embodiment uses a conventional SLIP provider to connect to the TCP/IP network and uses a commercial software TCP/IP package that has a standard driver interface. A spoofing protocol compensates for the long propagation delays inherent to satellite communication.

Abstract: A method of broadcasting controlling data streams and remote receiving apparatus for using the same are disclosed. A viewer-channel-to-broadcast channel (VCBC) map is employed to map one or more controlling data streams to one or more channels. The VCBC map is stored in memory. When a user tunes to a channel, the VCBC map is checked to determine if a controlling data stream is associated with the tuned channel. The VCBC map is periodically updated and broadcasted.