Abstract: Provided are a method and system for a module for a cable modem termination system. The module includes a digital modulator configured to block up-convert a plurality of digital channels and a digital to analog converter coupled, at least indirectly, to an output of the digital modulator to convert the digital channels to an analog format.

Abstract: A Headend system including a video codec to encode a video sequence yielding an encoded video sequence having video packets, a multiplexer, a signal generator to receive a notification of a splice point, analyze at least some of the encoded video packets based on the notification in order to find a random-access-point-packet, the random-access-point being a point from which to start decoding the encoded video sequence by the rendering device so that the video sequence may be rendered for output from the splice point, create a timing signal estimating a location of the random-access-point-packet in the encoded video sequence, and output the timing signal to the multiplexer or transmission equipment. Related apparatus and methods are also described.

Abstract: A protocol for wireless transmission of audio/video (A/V) information is provided. The protocol includes sending a request message from a requester to a responder for changing A/V format of an A/V stream transmission between the requester and the responder over a wireless communication medium. In reply to the request message, sending a response message from the responder to the requester for synchronizing the A/V format change. The requester and the responder changing the A/V format of the A/V stream in synchrony.

Abstract: A wireless communication device retrieves a continuous stream of data by receiving a request for retrieval of content from a remote server, retrieving data of the requested content over a first radio access technology (RAT) interface and connection, and determining if the data retrieved meets a content playback threshold. When the retrieved data does not to meet the content playback threshold, the device activates a second RAT interface for retrieval of data of the requested content over a second RAT connection. The first and second RAT interfaces simultaneously retrieve part of the requested content during a multipath time period, which part is divided into at least a first portion for retrieval over the first RAT connection and a second portion for retrieval over the second RAT connection and which first and second portions are selected such that their retrieval is estimated to meet the content playback threshold.

Abstract: Embodiments of a white space identifier are provided. According to one embodiment, the active channel information of a cable TV can be obtained through receiving and decoding a channel changing operation command from a remote control. The active channel information can then be transmitted to white space devices located within an interference range using a wireless transmitter. The wireless transmitter can be set to utilize a narrow fixed bandwidth.

Abstract: An integrated real-time display is provided that includes video images and a graphical representation of the transmission path, where each video image is associated with a point along the graphical representation of the transmission path. A number of monitoring points, which correspond to critical points along the transmission path are identified. The points may be selected for technical reasons or economic reasons. The graphical representation of the transmission path can be a logical representation showing the logic blocks along the transmission path or a physical representation showing the devices along the transmission path.

Abstract: A system and method for programming a digital video recorder (DVR) over a scheduling network. Program schedule information is provided to a user of a DVR via the scheduling network. A program selection is received from the scheduling client associated with a subscriber via the scheduling network. State information indicative of a state of a program provisioning system is used to determine whether the program selection is deliverable to the DVR via the program provisioning system. If the program selection is deliverable to the DVR via the program provisioning system, then the program is scheduled for recording by the DVR. The subscriber is notified if the program selection is deliverable or undeliverable.

Abstract: An implementation exits a power saving mode for fixed and periodic active periods of time to receive a separate burst transmission from a first stream during each of the corresponding active periods of time. The first stream is received at a first-stream burst data rate. The first stream includes data configured to be displayed at a first playback rate that is substantially less than the first-stream burst data rate. During the active periods of time, data is received from a second stream at a second-stream rate. The second stream includes data configured to be displayed at a second playback rate that is substantially the same as the second-stream rate. After receiving each of the burst transmissions from the first stream during the active periods of time, the power saving mode is entered for corresponding fixed and periodic power-saving periods of time while waiting for another burst from the first stream.

Abstract: A data collection and distribution system for monitoring aircraft in flight, on the ground and at the gate or terminal for monitoring critical and catastrophic events, managing the emergency during such an event, and for investigating the event. The system generates, transmits and collects critical data generated by monitoring equipment onboard an aircraft or other commercial transport and selectively displays the data on a cockpit display console as well as for downloading, transmitting and displaying data at external monitoring and response stations, including fixed ground stations, roving ground stations and chase aircraft or vehicles. Digital surveillance information is collected, processed, dispatched, and log via remote control and access. The system includes a variety of system appliances such as surveillance cameras, sensors, detectors, and panic buttons and accommodates legacy equipment.

Abstract: A system that incorporates teachings of the present disclosure may include, for example, a local resource manager server that receives a request to distribute media content, and provides signaling information to a global resource manager server. The global resource manager server can determine a media configuration of a network element based on the signaling information and a media capability of a recipient media processor. The signaling information can be provided to the local resource manager server to enable an initiating media processor to present the media content at the recipient media processor over a virtual private network.

Abstract: A method is described that includes receiving a program request from a transceiver that includes a program request to receive a video program at the transceiver. The method also includes determining an amount of bandwidth on a channel available to the transceiver. The method further includes determining whether to provide a unicast stream or a multicast stream to deliver the requested video program to the transceiver in response to the program request based on a result obtained after implementing a policy control function that considers an amount of bandwidth on the channel to the transceiver. The method further includes formatting and selecting an incoming media stream in accordance with the result of the policy control function to provide a corresponding formatted unicast or multicast media stream that includes video data for the requested video program. The method further includes outputting the associated formatted unicast or multicast media stream on the channel.

Abstract: Provided is a broadcast system that assigns a communication channel to a program and broadcasts data for the program to terminals, the broadcast system including a broadcast management device and a communication access network device. The management device calculates as a score a measure of viewing requests from users of the terminals for a plurality of programs, and determines a program to actually broadcast on the communication channel based on the score. The communication access network device transmits program data on a communication channel according to the determination of the broadcast management device.

Abstract: A system for managing storage accesses for rate guaranteed continuous data streams and non-rate-guaranteed storage requests may include a plurality of rate guaranteed requestors for data streams and one or more non-rate guaranteed requestors. A disk scheduler for the system may have a guaranteed rate queue for queuing storage requests from the rate guaranteed requestors and a non-rate-guaranteed queue for queuing requests from the non-rate-guaranteed requesters. The disk scheduler may include a bandwidth allocator coupled to the guaranteed rate queue and the non-rate-guaranteed queue. The bandwidth allocator may be configured to allocate bandwidth of a storage system between the guaranteed rate queue and the non-rate-guaranteed queue according to a predetermined ratio. The rate guaranteed requestors may be limited so that an aggregate of maximum stream rates guaranteed for each rate guaranteed requestor does not exceed the portion of the bandwidth allocated to the guaranteed rate queue.

Abstract: In an information-processing system shown in FIG. 1, a server (106) for delivering remote-operation control information in accordance with an audio/video instrument (110) and an information-processing apparatus (103) with a remote-operation screen display function for remote-controlling the audio/video instrument (110) based on control information acquired from this server (106) are connected to each other through the Internet (105) etc. The information-processing apparatus (103) makes a request to the server (106) to deliver the remote-operation control information in accordance with this audio/video instrument (110) and, based on the control information delivered from the server (106) owing to this delivery request, performs display processing of a remote-operation screen and, based on remote-operation information input by operations on the remote-operation screen, remote-controls the audio/video instrument (110).

Abstract: A display generation device, a display generation method, a program, and a content download system are provided. The display generation device for generating a display screen including one or two or more user-selectable playback control items is provided with a download section for downloading content data from a content server storing the content data, a data amount acquisition section for acquiring a data amount already downloaded and a data amount not yet downloaded by the download section among the content data, a rate acquisition section for acquiring a transmission rate of data from the content server to the display generation device, and a display screen generation section for generating the display screen including the playback control item according to the data amount acquired by the data amount acquisition section and the transmission rate acquired by the rate acquisition section.

Abstract: Systems and methods for transmitting packets over a network of communication channels are provide. A system according to the invention may include first and second nodes in communication with a coax backbone. The first node may further include a retransmission buffer. The system may also include a network access coordinator operative to coordinate access of the nodes to the coax backbone. In a time period at least one first packet is transmitted by the first node to the second node. The first packet may include an indication that retransmission service is applied. The first packet may also include a indication of the length corresponding to the packet. If, during the first time period the packet is not received by the second node, the second node is operative to send a retransmission request to the network access coordinator.

Abstract: A method and system for a client device to download media content directly from a group of other client devices which play a role of edge servers placed by a content service provider. According to some embodiments, an end user can use his/her client device to stream or download media content from the source client devices selected based on the geographic locality, network topology, etc. The fractions of data corresponding to a portion of media content are stored on the source client devices such that only a subset of the fractions of data are needed to recreate the corresponding portion. That is, by using the first received of the minimum number of fractions to reconstruct each portion of media content, the system does not need to wait for the slowest fractions to arrive, which contributes in reducing latency.

Abstract: Methods and apparatus for delivering data over extant infrastructure within a content-based network. In one embodiment, the network comprises a cable network, and the infrastructure comprises that nominally used for on-demand (OD) services such as VOD. The method includes the allocation of dedicated end-to-end network resources via a “session request, as well as data flow control and packet size adaptation, by a data server based on feedback from the requesting/receiving client device (e.g., DSTB) within the network. Mechanisms for retransmission requests for error recovery are also provided.

Abstract: A downstream bandwidth conditioning device includes a forward path. A coupler is connected within the forward path providing a secondary path. A tuner connected to the coupler is tunable based on an input from a microprocessor. The tuner provides a tuner output of a selected channel, the selected channel being at least one high frequency channel and one low frequency channel. A channel analyzer connected to an output of the tuner provides the microprocessor with a modulation output that differs when the selected channel is an analog modulation versus a digital modulation. A slope adjustment circuit connected within the forward path between the coupler and the supplier side connector is adjustable based on an slope control output provided by the microprocessor. An output compensation circuit connected within the forward signal path between the coupler and the supplier side connector is adjustable based on a level control output from the microprocessor.

Abstract: An IS-OFDM system for ultra-wideband (UWB) wireless communications that suppresses narrow-band interference, comprising an in-premises base station (IBS) is described. The IBS further comprises an IS-OFDM transceiver for communicating with a plurality of in-premises terminals (ITs) without creating interference outside an in-premises perimeter. Further, a method for operating an IS-OFDM system for ultra-wideband (UWB) wireless communications that suppresses narrow-band interference and provides local area networking services, in-premises distribution of broadcast cable channels and in-premises wireless access and routing to external networks is described, without creating interference outside an in-premises perimeter.

Abstract: A system and method for providing video signals wherein the video signals from a single video source may be separately passed over two different transmission paths. Each transmission path includes an encoder, a communications channel and a decoder. The output of each communications path at the decoder provides the video signals and an alarm signal. The alarm signal indicates an error or disruption of the video signals over the corresponding communications path. The outputted video and alarm signals are provided to a video protection switch (VPS) device which provides the video signal from the second transmission path if the alarm signals indicates an error or disruption in the first transmission path. In one embodiment, the VPS has multiple switches, one for each of plural video sources, and a redundant switch and protection ports. The redundant switch and protection ports may be connected to receive the video and alarm signals if one of the switches in the VPS fails.

Abstract: A set top terminal is provided that includes a receiver having at least one tuner for receiving programming content over a content delivery system and a processor operatively associated with the receiver. The set top terminal also includes a switched digital video (SDV) application module operatively associated with the processor. The SDV application module is configured to perform an autodiscovery process by tuning to prescribed autodiscovery frequencies received by the tuner while the SDV application module is being initialized.

Abstract: A distortion-cancellation method for analog CATV or QAM transmission over cable is provided wherein a single feedback path from the output of a multiple-channel multiple-port upconverter/modulator is down-converted and used to reduce or cancel undesirable noise components including LO leakage, spurious, and modulated noise. The method allows for real-time monitoring, tuning, or control of the CATV/QAM output and of interfering signals and aging effects as compared to a desired performance metric.

Abstract: A system for redistributing a multiple input audio/video and data signals having a redistributing device equipped to receive signals in a multiple formats and redistribute a selected signal to a user's premises over conductors, preferably existing twisted-pair telephone wire. The redistributing device is in interactive communication with a communications interface located in the user's premises which receives user-input control signals and contains switching circuitry which routes the selected signal to the user's premises where it is received by the receiving unit such as a television receiver. A single redistributing device services an entire multi-user network from a common distribution point, and services multiple users independently. The system of the invention does not interfere with normal use of the telephone network, so users can interactively access services provided by the system and use the telephone at the same time.

Abstract: A system for locating an impairment in a coaxial cable network comprises an encoder, an impairment detector, and a decoder. The encoder couples to the network at a predetermined encoding point, upstream of the impairment. The encoder automatically encodes an identification code on a signal originating downstream of the encoding point and associated with the impairment. The impairment detector couples to the network at an access point, upstream from the encoding point, and receives signals from the network. The detector is adapted to detect from the received signals the signal associated with the impairment and generate a detected version of the signal. The decoder is adapted to decode the identification code from the detected version of the impairment signal. Once the identification code is determined, the encoder and encoding point are identified, and the location of the impairment is determine to be downstream of the encoding point.

Abstract: The present invention relates to a data transport container for transferring a number n of different types of data in an Internet Protocol network. The number n is superior or equal to 2, and data is generated as Ethernet Jumbo packets, wherein the data transport container is an Internet Protocol packet. The invention also relates to a source device and to a destination device respectively for transferring and receiving such a data transport containers. At least, the invention relates to a method for transferring n different types of data being generated as Gigabit Ethernet RTP-UDP-IP jumbo packets. Both devices are to be used in a method as mentioned above.

Abstract: RF signal amplifiers for cable television networks are provided that include an RF input port. a power amplifier coupled to the RF input port and a power divider having an input that is coupled to an output of the power amplifier. The power divider includes a first directional coupler that is coupled to an output of the power amplifier. The directional coupler includes a first output branch and a second output branch. A first bypass circuit is coupled between the first and second output branches of the first directional coupler. A response of the power divider includes a null that substantially blocks signals received at the input of the power divider from passing to outputs of the power divider in a subset of frequencies within the range of 5 MHz to 1550 MHz. These RF signal amplifiers may provide improved performance, robustness and reliability when used in MOCA networks.

Abstract: An apparatus, and an associated method, provides for synchronized play out of media at separate devices. An invitation is generated at a device and communicated to a second device to invite a user of the second device to share media streaming of common media content pursuant to a common media experience. Control commands generated at one of the devices is communicated to another of the devices upon a bearer control channel to cause control of the media play out in a common manner at each of the devices.

Abstract: Certain embodiments of the invention may be found in a method for establishing a communication pathway for subsequent media exchanges between a television display in a first home and storage that contains media in a second home. The method may comprise securely receiving address correlation information associated with the television display in the first home and securely receiving address correlation information associated with the storage in the second home. Affirmative confirmation may be received and/or stored using the received address correlation information associated with at least one of the television display and the storage. The invention may also include verifying that affirmative information has been stored in association with any subsequent media exchanges.

Abstract: Segmented media content rights management is described. A media device can receive segments of protected media content from media content streams that each include a different version of the protected media content. A media content file can be generated to include the segments of the protected media content that are sequenced to render the protected media content for viewing. A file header object can be instantiated in a file header of the media content file, where the file header object includes DRM-associated features, such as one or more DRM licenses, properties, and/or attributes that correspond to the media content file to provision all of the segments of the protected media content together.

Abstract: MPEG video encoders and MPEG audio encoders encode video signals and audio signals, respectively. An SI/EPG data generator generates program information. A transport stream multiplexer multiplexes the program information with video data and audio data. A system controller controls the data output rates of the encoding operations and the multiplexing ratio.

Abstract: Disclosed is a scalable, hierarchical, distributed network architecture and processes for the delivery of high-performance, end-to-end online multimedia services, including Internet services such as World Wide Web access. The network architecture connects a high-speed private backbone to multiple network access points of the Internet, to a network operation center, to a back office system, and to multiple regional servers in regional data centers. Each of the regional servers connects to several caching servers in modified head-ends, which in turn connect via fiber optics to many neighborhood nodes. Finally, each node connects via coaxial cable to multiple end-user systems. The processes include those for replicating and caching frequently-accessed content, and multicasting content customized per region or locality.

Abstract: DisplayPort micropackets of uncompressed visual information are adapted to conventional network infrastructure with a switch having DisplayPort ports, network ports and a packet converter. The packet converter encapsulates DisplayPort packets for communication through network ports and extracts DisplayPort packets from network packets for communication through DisplayPort ports. An address resolution table associates the switch ports with each other and with a packet converter operation by using a control field that defines the packet converter operation for information received at each port, such as encapsulation, extraction or native switching.

Abstract: A communication system for accessing media items via a display device. A receiver is coupled to the display device and a transmitter is coupled to a computer system. Media items stored locally on the computer system and/or remotely on a remote server may be wirelessly transferred from the transmitter to the receiver for display on the display device. In addition, the transmitter and the receiver may be pre-paired prior to delivery to the user, allowing for the network to be configured without any user input. Advantageously, embodiments provide a user with the ability to conveniently view content stored on a computer or a web server without the user having to perform any wireless network setup procedures.

Abstract: A content reproduction device includes: a plurality of communication units (a cellular phone and a wireless LAN communication unit), each receiving a content transmitted in segments from a content transmission device over a communication path; a content reconstruction unit that has a buffer in which each segmented data of the content received by each of the communication units is temporarily accumulated, and that reconstructs each segmented data accumulated in the buffer into the content; a reproduction unit that reproduces, at a predetermined bit rate, the content reconstructed by the content reconstruction unit; and a communication control unit that: calculates, for every predetermined time, target transmission speeds to be assigned for content reception performed by the respective communication units, based on free space in the buffer and the bit rate; and transmits a first request signal indicating the calculated target transmission speeds to the content transmission device via one of the communication un

Abstract: Systems and methods to provide automatic compensation for frequency attenuation of a video signal transmitted over a cable are provided. Frequency compensation is applied to a received video signal that was transmitted over the cable to thereby produce a compensated video signal. A shape of a horizontal sync portion of the compensated video signal is analyzed. The frequency compensation is automatically adjusted based on the shape of the horizontal sync portion of the compensated video signal. This abstract is not intended to be a complete description of the various embodiments of the present invention.

Abstract: A system, apparatus, and method of providing a personal broadcasting service according to scheduling are provided. The system for providing a personal broadcasting service includes a producer client which produces and transmits a broadcasting schedule, a broadcasting server which establishes a broadcasting channel according to the broadcasting schedule and provides broadcasting content produced by the producer client through the broadcasting channel, and a viewer client which receives the broadcasting content through the broadcasting channel.

Abstract: Apparatus for establishing a packet-based connection between a video display equipment (such as a set-top box) having an analog modem and a remote computer. The translation apparatus receives a connection initiation request from the video display apparatus and responsive to the connection initiation request establishes a modem connection with the video display apparatus. The translation apparatus further receives communication data from the video display apparatus via the modem connection and transmits the communication data to the remote computing apparatus via a packet-based network. The translation apparatus can also receive communication data from the remote computer and relay the same to the video display apparatus. The connection can be established upon powering up of the video display apparatus, upon loading of an Interactive TV application or upon other pre-determined event. The connection can be maintained “always-on” or substantially “always-on”.

Abstract: A method for interference-free, centrally controlled switchover from a first to a second program channel in a data transmission system for distributing encoded program data streams to multiple subscribers includes delivering at least two program data streams, each of which is associated with a separate program channel, to a separate, controllable encoder. The program data streams are encoded in the associated encoders. The encoded first and second program data streams are fed into a distribution network. One encoded program data stream is delivered through a routing device to at least one target subscriber. Control parameters are provisioned in a central control device which permits a synchronized activation of the controllable encoders and at least one switching device for interference-free switchover of the program channels. An interference-free switchover from the first to the second program channel is executed.

Abstract: The present invention relates in particular to a method for processing multimedia content memorised in the form of digital data in at least one multimedia unit. This method includes the following steps: reception of a program map table containing at least one indication of a proprietary type of data associated to a packet identification data (PID) as well a flag; reception of a matching table between the flag value and the real type of data; search for the flag values appearing in the program map table PMT received by the multimedia unit; search for the corresponding flag values in the matching table between the flag value and the real type of data; and modification of the program map table by replacing the indication of the proprietary type of data of the program map table with the corresponding real type of data of the matching table. The invention furthermore concerns a method for sending multimedia content in the form of digital data, as well as a multimedia unit for implementing these methods.

Abstract: A system that incorporates teachings of the present disclosure may include, for example, a system having a controller to deliver broadcast channels by way of interactive TV (iTV) edge routers using multicast virtual private networks, share a same multicast state for the broadcast channels and share a same multicast delivery tree for the broadcast channels. Other embodiments are disclosed.

Abstract: A method and apparatus for transmitting audio information and digital images via a wireless switching network by performing the operations of starting a photo or audio session by a digital camera or audio appliance; connecting the digital camera or audio appliance to a wireless telecommunication terminal; reserving bandwidth on the wireless switching network; transmitting digital images or audio information between the digital camera or audio appliance and a centralized database via a first path on the wireless switching network; and establishing a second path for transmission of digital images or audio information upon the first path being interrupted using the reserved bandwidth for the second path.

Abstract: An optical network system including an OLT and ONUs is provided that can prevent the loss of a multicast signal. When receiving an encryption key generation request from the OLT, the ONU generates an encryption key, and transmits the generated encryption key to the OLT. When receiving a notice of timing from the OLT, the ONU updates the encryption key of a belonging group. When receiving a report message from a STB through the ONU, the OLT analyzes the report message, stores a group that the STB belongs to as well as the ONU in a second table, and transmits the encryption key generation request to the ONU. When receiving the encryption key from the ONU, the OLT further stores the encryption key in the second table, and transmits to the ONU a notice of the timing in which the encryption key is valid.

Abstract: A fiber node may include a cable modem termination system (CMTS) that includes a first receiver to receive first signals from a plurality of cable modems over a plurality of upstream channels, and extract data from the first signals; a second receiver to receive second signals, the second signals being in a different format than the first signals; and a processor, connected to the first receiver and the second receiver, to receive the extracted data from the first receiver, receive the second signals from the second receiver, compress the extracted data and the second signals, merge the extracted data and the second signals, and transmit, to an upstream facility, the merged extracted data and the second signals over a common network path.

Abstract: A wireless node device determines an origination port number, communicates with the wireless node device to exchange a destination port number determined by the wireless node device and the origination port number determined by the wireless node device, and associates the origination port number with the destination port number. Further, the wireless node device input formats supported by the wireless node device, reserves wireless resources for wirelessly transmitting the content data, determines one of the obtained input formats as an output format and notifies the wireless node device of the determined output format, and wirelessly transmits the content data to the wireless node device through a pair of ports indicated by the origination port number and the destination port number associated with each other.

Abstract: A system that incorporates teachings of the present disclosure may include, for example, a network device to transmit interactive TV services using minimally twisted or non-twisted pair cables including a controller to receive a very high digital subscriber line (VDSL) signal at the minimally twisted or non-twisted pair cable and adapt the VDSL signal for transmission over the minimally twisted or non-twisted pair cable to form an adapted VDSL signal which can subsequently be used for presentation of interactive TV services. Other embodiments are disclosed.

Abstract: A number of cameras capture a scene and send corresponding video sub-streams to an acquisition PC. Each sub-stream is made up of a plurality of sub-frames. The acquisition PC sends the sub-streams over a network to a playback PC. The playback PC stores each sub-frame in a queue corresponding to an associated sub-stream. For each sub-stream the playback PC calculates a sub-stream average period to produce a plurality of sub-stream average periods. It then calculates a composite average period by averaging the plurality of sub-stream average periods, and calculates a playback frame rate as a reciprocal of the composite average period. The playback PC then reads the sub-frames from their corresponding queue in synchronism with the calculated playback frame rate to display the plurality of sub-streams.

Abstract: A multi-functional display device having a channel map and a method for controlling the same are disclosed herein. The multi-functional display device may include a display, an input interface, a network interface for communicating with at least one second multi-functional display device, and a controller for controlling a display of the channel map and content associated with a channel selected in the channel map. The channel map may include a first channel number associated with a broadcast channel and a channel name for the first channel, and a second channel number associated with a social network service (SNS) account for an individual or entity and an SNS channel name for the second channel.

Abstract: A method and apparatus for controlling a channel for providing an IPTV is disclosed, which is capable of improving use efficiency of network resource and reducing a channel zapping time by controlling a channel type of each channel and a bit rate of video data to be transmitted through each channel, the method comprising (a) determining an optimal channel status vector among channel status vectors to indicate channel types of respective channels, wherein the optimal channel status vector enables a minimum cost corresponding to the sum of an average channel zapping time of respective channels and an average distortion value of video data transmitted through the respective channels; and determining an optimal bit rate at the determined optimal channel status vector; and (b) transmitting the video data at the optimal bit rate through the respective channels.

Abstract: Provided is a system and method for terrestrial digital broadcasting service using a single frequency network without additional equipment. The system and method synchronizes input signals into transmitting stations by inserting a transmission synchronization signal into a header of TS periodically, and solves the problematic ambiguity of the trellis encoder by including a trellis encoder switching unit separately and initializing a memory of the trellis encoder. The terrestrial digital broadcasting system includes: a broadcasting station for multiplexing video, voice and additional signals into transport stream (TS) and transmitting the TS to the transmitting stations and a transmitting stations for receiving the TS and broadcast the TS to receiving stations through a single frequency network.