Abstract: It is often required to send a plurality of streams of data in parallel between two network nodes in a synchronous transmission network and also to maintain a particular alignment between those streams of data. This is particularly required when the streams of data are to be transmitted over a wide area network, for example, for data mirroring applications. Virtual concatenation is used for each of the individual data streams as known in the art and in addition, the individual virtual concatenation processes are synchronized or co-ordinated. At a destination node it is then possible to realign the individual data streams with respect to one another.

Abstract: A demultiplexing circuit, a light emitting display using the same, and a driving method thereof, in which the number of output lines provided in a data driver is reduced.

Abstract: The present invention discloses a method of detecting and correcting skew across a plurality of transmitting lanes. Through the use of an N framer system, including a frame start signal and a frame synchronization signal, skew can be detected and corrected by writing data from a plurality of framers into offsetting bit locations of a plurality of buffers. The present invention also provides a method of transmitting data in a multiple lane distribution (MLD) transmission system.

Abstract: A communication system and method for a deep space spacecraft receiver to perform post-processing to dynamically combine received signal power coherently for pre-processed signal streams radiated non-coherently from a distributed, multiple element, Ka-band transmitting array via multiple concurrent propagation paths. Mutually orthogonal data and pilot signals travel though the multiple propagation paths. A pre-processor utilizing wavefront multiplexing restructures signal streams on the ground into multi-channel wavefrom structures along with injections of pilot signals for diagnostic and probing purposes. These restructured, or “wavefront multiplexed” (WFM) signals are transmitted through propagation channels to a receiver on the spacecraft, wherein adaptive equalization and wavefront de-multiplexing coherently separates the mixtures of received WFM signals.

Abstract: The digital broadcast receiver comprises: a signal input unit for receiving a received broadcast wave; a demodulation unit for demodulating the broadcast wave; an external module; an external module I/F (Interface) for connecting the receiver to the external module; a decoding unit for extracting necessary information containing a target content from the received signal; an output unit for outputting actual video/audio; a control unit for controlling the entire receiver; and a user I/F for transmitting and receiving information to/from a user. Further, there are provided: a packet processing unit that is located between the demodulation unit and the external module I/F, that monitors all the packets contained in a TS, and that performs a predetermined processing on packets matched with a predetermined condition; and a TS selector that is located between the external module I/F and a bus line and that selects and outputs one designated TS of the two TSs.

Abstract: A communication method in a mobile communication system that transmits different data to which transmission sequence numbers have been attached, over each of a plurality of paths from a mobile station to a radio network controller via a plurality of base stations; where the radio network controller monitors the communication state of each path, determines to transmit the data over all of a plurality of paths, transmit the data over two or more specified paths, or transmit the data over only one specified path, based on the communication state of each path, and notifies the mobile station of the determined path/paths; and where the mobile station transmits different data to which different transmission sequence numbers have been attached, over said notified path/paths, and the radio network controller rearranges the data received from each path by reference to the transmission sequence numbers and transmits the rearranged data to a core network.

Abstract: A method for rate-shaping media streams; the method includes: receiving multiple input media streams, transmission parameters, wired transmission limitations and wireless transmission limitations that represent a current status of a wireless medium; and rate-shaping at least one input media stream out of the multiple input media streams, in response to: (i) the transmission parameters, (ii) the wireless transmission limitations, and (iiii) input media stream parameters. A system for processing media streams; the system includes: a controller, adapted to determine rate-shaping parameters in response to: (i) the transmission parameters, (ii) the wireless transmission limitations, and (iii) input media stream parameters; and a rate-shaper, connected to the processor, adapted to receive multiple input media streams and perform rate-shaping according to the rate-shaping parameters.

Abstract: A method for communication includes receiving a composite signal, which carries data at a first data rate and includes multiple sub-signals that are interleaved in a time domain and are separated by boundary indicators. The received composite signal is demultiplexed into the sub-signals by automatically detecting the boundary indicators between the sub-signals in the composite signal. The sub-signals are demodulated using multiple respective demodulators operating at second data rates that are lower than the first data rate so as to generate respective output data streams. The output data streams are combined so as to reconstruct the data at the first data rate.

Abstract: The invention discloses a network aggregation system, apparatus and method for creating aggregated network connections to provide high availability and increased throughput where the plurality of network connections may possess diverse physical and logical characteristics. Increased throughput on the aggregated network connection equals the sum of the available throughput on the aggregated network connections. Aggregation is performed in a transparent fashion, independent of any physical or logical characteristics of the individual connections. Network connectivity over the aggregated connection is managed such that the loss or gain of connectivity in an individual connection among the aggregated group does not result in the loss of data from the data stream aggregation device.

Abstract: A data processing apparatus includes a channel demultiplexing circuit, a bus, a memory controller and a memory. The channel demultiplexing circuit has a first delay circuit which delays first channel data only of multi-channel data by one cycle and outputs first delayed channel data, a second delay circuit which delays second channel data only of the multi-channel data by one cycle and outputs second delayed channel data, and a channel data holding circuit which stores first coupled data obtained by coupling the first channel data and the first delayed channel data for multiple cycles and stores second coupled data obtained by coupling the second channel data and an output of the second delay circuit for multiple cycles. The channel demultiplexing circuit selectively outputs a first channel data group and a second channel data group to the bus.

Abstract: A method for including an identifier with a packet associated with a speech signal is described. A signal is received. The signal is partitioned into a plurality of frames. A frame of the signal is encoded into a packet. A determination is made if the packet is encoded as a wideband packet or a narrowband packet. An identifier is packed in the packet based on the determination. The packet is transmitted. At least two illegal values are provided from an N-bit parameter, wherein at least one bit from the N-bit parameter is used to carry information. A number of bits from the N-bit parameter that are used to carry information is equal to log2(X), wherein X is the number of illegal values provided from the N-bit parameter.

Abstract: The present invention provides a communication network in which data can be routed from a terminal to a WAN over a plurality of communication links, the communication links connecting a plurality of terminals to the WAN and all of the terminals being interconnected by a LAN.

Abstract: Disclosed are, inter alia, methods, apparatus, computer-storage media, mechanisms, and means associated with Bidirectional Forwarding Detection (BFD) on multilink bundled interfaces. A packet switching device communicates with another packet switching device through a multilink bundled interface configured for communicating over a plurality of bundled communication links. A separate BFD session is conducted over each link of the multiple bundled communication links, and in response to a BFD-detected failure condition, the use of the one or more links or the entire bundled interface is removed from service.

Abstract: A method and apparatus for reducing service impairment in a LAG are provided. The method includes: dividing a service packet into multiple service sub-flows, and allocating the multiple service sub-flows to all the physical ports averagely; after a new port is added, configuring a preset quantity of service sub-flows for the new port; or, after a port is deleted, allocating the service sub-flows on the deleted port to other ports; and finding a forwarding physical port through a service packet according to the service sub-flows. An apparatus for reducing service impairment in a LAG includes: an initializing module, a new port processing module or a deleted port processing module, and a forwarding port search module. In the case of adding or deleting a port, only the affected service sub-flows are operated, thus minimizing the impact.

Abstract: A multiplexed audio data decoder apparatus is provided in which integration of an audio decoder is easy, and has a high flexibility when the number of the formats to be processed is increased or when the specification is changed. In an external ROM 60 there are accumulated a plurality of decoding program codes corresponding to respective plural methods for compressing and encoding. A controller 50 transfers the decoding program code corresponding to the method for compressing and encoding after changing thereof, from the external ROM 60 to an internal RAM 25. A DSP 22 starts decoding processing by using the decoding program code which is transmitted into the internal RAM 25.

Abstract: A sliceable router includes a forwarding engine; a routing engine coupled to the forwarding engine; multiple virtual packet interfaces coupled to the forwarding engine, wherein the interfaces shares an optical orthogonal frequency-division multiple accesses (OFDMA)-based programmable transceiver for interface virtualization; and one or more physical packet interfaces coupled to the forwarding engine.

Abstract: At least a portion of a total spectrum bandwidth of a wireless system may be allocated to each of a plurality of users by assigning at least one unique spreading code to each of the plurality of users. At least two of the plurality of users may have different spectrum capabilities and may transmit simultaneously. Each of the assigned spreading codes may have a different code length. The number and/or the code length of the spreading codes assigned to each user may be indicative of a portion of the total spectrum bandwidth allocated to each user.

Abstract: Highly flexible trunking is actualized by using a switching hub without a trunking function. A computer generates a distribution algorithm notification packet including physical addresses of communication interfaces and a distribution algorithm used for distributing data sent from a computer at the other end to the computer among the communication interfaces (step S1) and sends the distribution algorithm notification packet to the computer at the other end (step S2). The computer at the other end determines a communication interface which is a destination of send data to be sent to the computer in accordance with the distribution algorithm about which the computer at the other end was informed, designates a physical address of the determined communication interface as a destination, and sends the send data.

Abstract: A method for transmitting/receiving data in a communication system using multiple frequency bands. The transmission method includes fragmenting a desired transmission Service Data Unit (SDU) in units of Packet Data Units (PDUs); and transmitting the fragmented PDUs over at least two frequency bands among the multiple frequency bands. Each of the multiple frequency bands is supported by a system having backward compatibility with a legacy system. The reception method includes decrypting a wireless resource (MAP) allocated separately for each of the frequency bands to extract fragment information therefrom; and receiving PDUs over the frequency bands separately, and restoring the SDU according to fragment information corresponding to the corresponding frequency band.

Abstract: A transmitter/receiver system for high data transfer in a wireless communication system includes a physical layer processor that comprises an FEC coder, a demultiplexer and a plurality of modem processors. The FEC coder applies error correction codes to the high data rate signal. Thereafter, the demultiplexer distributes portions of the coded high data rate signal to the modem processors. Each modem processor processes its respective portion of the coded signal for transmission in an independent channel.

Abstract: In a mobile terminal in which a communication service is being executed, communication networks can be switched without causing a loss of communication data while maintaining the execution of the communication service. In a server which provides a communication service via communication networks provided in parallel and a mobile terminal which obtains the communication service using one of the communication networks, the mobile terminal activates another communication network in parallel while maintaining execution of the communication service to thereby transmit pieces of information having the same content, generated by copying, through the respective communication networks, and switches the one communication network being used to the other communication network.

Abstract: A digital broadcasting transmitter, a turbo stream processing method thereof, and a digital broadcasting system having the same. The digital broadcasting transmitter includes a first compressor, forming a normal stream by compressing audio and video signals in a first compression format, a second compressor, forming a turbo stream by compressing the audio and video signals in a second compression format, a transport stream (TS) constructor, compressing the turbo stream in an H.264 format and forming the dual transfer stream by multiplexing the normal stream and the turbo stream, and a TS processor, robustly processing the dual transfer stream transmitted from the TS constructor, thus enhancing the transmission efficiency.

Abstract: Throughput between personal computers and the Internet is increased by using inverse multiplexing over local loop telephone lines of different users. The different personal computers share the multiple intersubnetwork connections with each other, so that the efficiency of the use of the intersubnetwork connections is increased. Each of the computers is capable of receiving and/or transmitting inverse-multiplexed data signals over the same plurality of intersubnetwork connections. Preferably, at each computer, use is made of a separate connecting device locally coupled to the computer and an intersubnetwork connection and remotely coupled to one or more other such connecting devices. The connecting devices are placed in different housings, each having a regular connection with a local computer and a wireless transmission connection to corresponding connecting devices in neighboring housings.

Abstract: A power line communication system includes: a first electronic instrument and a second electronic instrument, wherein information is received or transmitted between the first electronic instrument and the second electronic instrument which are connected through a communication line using a power line, wherein the first electronic instrument comprises: a key operation unit for accepting a key operation performed by a user; and a transmission unit for transmitting a power-on request signal for requesting the second electronic instrument to be turned on, to the second electronic instrument through the power line based on the key operation in the key operation unit, and the second electronic instrument comprises: a reception unit for receiving the power-on request signal transmitted from the first electronic instrument through the power line; and a power-on control unit for turning on the second electronic instrument based on the power-on request signal received by the reception unit.

Abstract: A system for transmitting and receiving image and audio data that is information on any of image and audio has a transmission apparatus and a reception apparatus. The transmission apparatus transmits the image and audio data using a multi-channel communication system and includes a first protocol conversion device. The reception apparatus receives the image and audio data using the multi-channel communication system and includes a second protocol conversion device. The transmission apparatus performs data conversion processing on the image and audio data by the first protocol conversion device using a protocol to produce parallel image and audio data, and transmits it to the reception apparatus using the multi-channel communication system. The reception apparatus receives the parallel data to perform data conversion processing on the parallel data using the protocol by the second protocol conversion device to return to the image and audio data.

Abstract: In retransmission processing due to a failure of transmission of data packets, a plurality of data packets are simultaneously transmitted between two STAs by utilizing multiple wireless channels and MIMO, and the number of idle channels and the number of retransmission packets are compared. Then, when both of the numbers are different or only when the number of idle channels is larger than the number of retransmission packets, the retransmission packets are reconstructed according to the number of idle channels, and the reconstructed retransmission packets are simultaneously transmitted by using the idle channels.

Abstract: A communication apparatus is provided which avoids such a situation that retrieval tables do not correspond with each other, and a broadcast is induced. When an input port or an output port determined by switch function units 121, 131 is a port belonging to a Link Aggregation group, frame identifying units 122, 132 copies a frame, outputs the frame from the output port determined by the switch function units 121, 131, and transfers the copied frame to a header editing 123 and 133. The header editing units 123, 133 generate a header inside an apparatus including a field indicating whether it is a copied frame and a field storing an input port number to attach the header to the frame, and transfer the frame from one of frame transferring units 13, 12 to another.

Abstract: Provided are a method and apparatus for derate matching a rate-matched data. The received data is deinterleaved and derate matched at a time, without using input buffers or constructing input buffers in parallel. Thus, a total process time necessary for the deinterleaving process and the derate matching process is reduced, and the use of memories such as the input buffers is minimized.

Abstract: A transmission system includes a transmission apparatus and a receiving apparatus for repeatedly transmitting and receiving a frame with plural time slots at a constant frequency, in which digital audio data of plural channels and auxiliary data required to playback the digital audio data are transmitted using previously allocated time slots. A multiplexer is provided for multiplexing, assuming an area made up of previously allocated time slots that are included in respective frames amounting to a number of a multiple of n as block data when the predetermined encryption unit is n bytes. The digital audio data and the auxiliary data are allocated as the block data wherein the auxiliary data is allocated to the time slots that are located at the same positions of respective plural frames within the block data, and the digital audio data is allocated in the time slots that are located at the same position in the respective frames amounting to the number of a multiple of n in the block data.

Abstract: The present invention provides a communication device capable of providing a highly reliable service by detecting communication abnormality at a high speed. The communication device comprises a link configuring unit configuring a plurality of logical links between a opposite communication device, a segmenting unit segmenting transmission data as being associated with each of the plurality of logical links, a transmission unit transmitting the segmented data via the logical link associated with this segmented data, a receiving unit receiving the data via each of the plurality of logical links, and an abnormality detection unit judging, within a predetermined period of time since the data were received via any one of the plurality of logical links, if the data are not received via at least one of the remaining logical links, at least one logical link to be an abnormal logical link.

Abstract: In order to increase the efficiency of large-capacity transmission, the continuity of divided signals generated by dividing a multiplexed signal is maintained and the original large-capacity multiplexed signal is restored. A signal dividing section divides a multiplexed signal to generate a plurality of divided signals in the STS or STM transmission interface format. A guarantee information adding section adds guarantee information for guaranteeing the continuity of the divided signals to each of the divided signals to generate transmission signals. A signal sending section sends the transmission signals via a transmission line in the transmission interface format. A signal receiving section receives the transmission signals. A signal restoring section restores the multiplexed signal by constructing the divided signals on the basis of the guarantee information.

Abstract: A communication device has a first transceiver that operates in a first communication system in the presence of a second transceiver that operates in a second communication system that is unrelated to the first communication system. A scheduler of packets for transmission by the first transceiver uses information about when the second communication system will be transmitting a signal that will interfere with reception by the first transceiver, and schedules data for which re-transmission is not essential in those time slots in which an implicit NACK is expected due to the second transceiver's operation.

Abstract: An asynchronous data pipe (ADP) automatically generates transactions necessary to complete asynchronous data transfer operations for an application over a bus structure. The ADP includes a register file which is programmed and initiated by the application. The register file includes the bus speed, transaction label, transaction code, destination node identifier, destination offset address, length of each data packet, packet counter, packet counter bump field, control field and a status field. During a data transfer operation, the ADP generates the transactions necessary to complete the operation over the appropriate range of addresses, using the information in the register file as a template. The ADP increments the value in the destination offset address field for each transaction according to the length of each data packet, unless the incrementing feature has been disabled and the transactions are to take place at a fixed address.

Abstract: A channel inverse multiplexer/multiplexer (IMUX/MUX) (14a) of a MAC sublayer (14) of a UTRAN RNC (11) for providing to a UE (18) traffic (communication signals including in general both control and user data) at a higher rate than the UE can accept over a single channel. The channel IMUX/MUX performs inverse multiplexing of traffic for downlink, and multiplexing of traffic on uplink, and does so in a way that is transparent to all other layers/entities of the UTRAN (11 17) and to the UE (18).

Abstract: Systems and methods for communication of scaleable-coded audiovisual signals over multiple TCP/IP connections are provided. The sender schedules and prioritizes transmission of individual scalable-coded data packets over the plurality of TCP connections according to their relative importance in the scalable coding structure for signal reconstruction quality and according to receiver feedback. Low-latency packet delivery over the multiple TCP/IP connections is maintained by avoiding transmission or retransmission of packets that are less important for reconstructed media quality.

Abstract: Methods and systems for aggregating Ethernet communications are disclosed. A disclosed apparatus includes a first Ethernet port to communicate with a second Ethernet port of a first device, a third Ethernet port to communicate with a fourth Ethernet port of a second device, a fifth Ethernet port to receive Ethernet frames, and a switching portion to direct nth ones of the frames to a first queue associated with the second port, direct n?1 frames preceding each of the nth ones of the frames to a second queue associated with the fourth port, and select a value of n based on a ratio of a first non-zero data rate of the first device for a first communication link in a first direction and a second non-zero data rate of the second device for a second communication link in the first direction, and based on a remaining capacity of the first queue.

Abstract: A transport protocol that achieves improved performance in an environment where paths are lossy and a plurality of paths are employed to transfer data, essentially in parallel, from a source to a destination. The protocol is implemented with the aid of an aggregate flow manager (AFM) at the source that considers and controls the data flow through the plurality of paths. With some preselected regularity the AFM determines a number of packets to be included in a Forward Error Correction (FEC) block of packets, creates the block, and transmits the segments of the block over the plurality of paths. As necessary, the destination sends information to the source of what additional information needs to be sent. This additional information might be reactive error correcting (RFEC) packets, or a retransmission of the missed packets.

Abstract: An outer encoder and an inner encoder encode subsets of information to be transmitted, to improve protection by adding redundancy. The redundancy permits decoding of the information from less than a complete encoded block of information. The use of a combiner at an outer decoder enables better outer decoding of symbols.

Abstract: A capacity variable link apparatus including a main signal system and a control signal system is provided. The main signal system includes: an upper layer signal accommodation part; a lower layer path termination part; and a signal switching part for dividing the upper layer signal to lower layer signals in a lower layer path group having a capacity that is determined according to an amount of traffic of the upper layer signal. The control system includes: a traffic amount measuring part for measuring the amount of traffic of the upper layer and for determining whether the capacity of the lower layer path group is to be increased or decreased according to the amount; and a signal switching management part for controlling the signal switching part according to the result of the determination.

Abstract: An apparatus and method are provided for receiving multiple streams. A group session structure is defined and streams are decoded according to the defined group session structure so that a single decoder can sequentially process demultiplexed streams allocated to multiple decoding buffers when multiple logical media streams are multiplexed into one physical stream in a mobile broadcast communication system based on Lightweight Application Scene Representation (LASeR).

Abstract: The invention concerns a communication device including several external data sources, at least a local area network connecting peripherals, means enabling to establish connections between the local area network and the external data sources, means for controlling the incoming data from the external sources and for sending them to the local area network in order to reduce the bandwidth occupation on the local area network. The device also includes means for updating signalization tables included in the incoming data and means for inserting the modified signalization tables in the transport stream sent to the local area network. It is applicable to IEEE 1394 networks.

Abstract: When a data signal of a first channel is an RZ signal having a pulse period T1 and a logic “1” pulse width m, a data signal of a second channel is an RZ signal having a pulse period T2 and a logic “1” pulse width n and the relation n < m is satisfied, a multiplexed signal D obtained by time-division multiplexing the data signals of two channels is input. A pulse signal with a pulse width k satisfying n < k < min(m, T2) is generated at timing of a leading edge of the data signal of each channel. When the multiplexed signal D is judged as logic “1” at timing of a trailing edge of the pulse signal, the data signal of the first channel is output. Similarly, when the multiplexed signal D is judged as logic “0”, the data signal of the second channel is output.

Abstract: Methods and apparatuses enable selective operation in an extended bandwidth channel of a wireless communication band. For example, a client station can be selectively authorized to operate on a 40 MHz channel in a 2.4 GHz band. The client station or an access point or both can determine whether interference exists in the wireless communication band. If potential interference exists, the client station may operate on a non-extended bandwidth channel. If potential interference does not exist, the client station may operate on an extended bandwidth channel. Operation between the two channels can be dynamic based on continued monitoring of the wireless communication band for potential interference.

Abstract: A system and method are provided for transporting a serial stream via a lower speed network using multiple parallel paths. At a transmitter, an optical or electromagnetic waveform is accepted representing a serial stream of digital information, and unbundled into n virtual information streams. Each virtual information stream is divided into a sequence of segments. Each segment is encapsulated, creating a sequence of packets by adding a start indicator to the beginning of each segment, and a terminate indicator to the end of each segment. Each packet is disinterleaved across m lanes and reinterleaved into n branches of framed data. Optical or electromagnetic waveforms representing the framed data are transmitted via n network branches. A receiver is also provided, which essentially reverses the above-described transmission method.

Abstract: A method and apparatus of bit demultiplexing for a rate 1/3 convolutional encoder in a wireless communication system, the method comprising, receiving bits from the rate-1/3 convolutional encoder, demultiplexing the received bits by distributing the bits sequentially into 3 sequences denoted as V0, V1 and V2 such that the first bit is going to the V0 sequence, the second bit is going to the V1 sequence and the third bit is going to the V2 sequence and ordering the sequences such that V0 is the first sequence, V1 is the second sequence and V2 is the third sequence.

Abstract: In one embodiment, a load-balancing algorithm ensures that both network nodes at endpoints of a group of physical links aggregated into a logical channel are using the same load-sharing algorithm and also ensures that the load-sharing algorithm is normalized so that the same flow traverses the same physical link in both directions.

Abstract: A signal separation method for separation of source signals from a composite signal expresses the composite signal as a series of values of signal amplitude. The source signals have periodicities similar or equal to p. The composite signal is portioned into sections which provide respective rows of a matrix X, in which successive rows represent successive sections. A singular value decomposition of the matrix X is performed to obtain two singular vector matrices U, V and a singular value matrix ?. An independent component analysis is performed on one of the singular vector matrices U, V to obtain an independent component matrix UR2T,R1TV and an associated component matrix R2?V,U?R1. One of the component matrices UR2T,U?R1 contains estimated separated signal modulation envelopes and the other component matrix R2?V, R1TV contains estimated separated cyclets.

Abstract: Link-based source routing may be implemented using generic framing protocol (GFP) to enable GFP frames to contain a switching context that will allow them to be forwarded on a network without requiring state information to be distributed to interior network elements on the network. Source routes may be computed from network topography information obtained using OSPF or ISIS. An extension header type is added to the GFP frames to signal to the network elements that the GFP frame contains a link-based source route. The source route contains a vector of tunnel IDs and a pointer to the current hop, to enable the current tunnel ID to be determined. The tunnel IDs have local significance only, and hence state information is not required to be distributed on the network. A return route may be built by index substitution as the frame traverses the network.

Abstract: The present invention relates a node device cross-connected to a STM transmission system and a maintenance and operation support device connected to the node device. The object of the present invention is to releasing a desired transmission section or link efficiently. Therefore, the node device according to the preset invention includes control section individually selecting a link provided to for a path in the communication devices accommodated into the local and remote stations; and cross-connection section providing a path through the selected link, wherein the control section selects an auxiliary link based on a system configuration when identifiers of all paths to be replaced by the substitute path are given.

Abstract: A digital signal receiver for a high-bitrate digital signal has a serial signal input (20, 20?) and a number of N parallel digital signal outputs (26) with N>1. The receiver contains at least N+1 digital sampling channels (31-35), a Q-monitor (37, 38) for comparing the output signal of at least two of the sampling channels (31-35), and a switch fabric (36) for controllably connecting N of the sampling channels (31-35) to the outputs (26) and at least two of the sampling channels (31-35) to the Q-monitor (37, 38). This allows to use N of the sampling channels to provide the N output signals while at the same time, the at least one remaining sampling channel can be used by the Q-monitor to scan an eye diagram.