319 results about "Demultiplexer" patented technology

Methods and apparatus are provided for statistical re-multiplexing of multiple channels. Mechanisms are provided to manipulate and / or recode multiple compressed bit streams such that a resulting bit stream has a rate matching adjusted based on the allowable output channel rate. Loss-less transmission of compressed video bit streams can be output in real-time. In one example, the system includes encoders and demultiplexers on multiple channels. The demultiplexers are connected to a scheduler and multiplexer to provide an output bit stream at a given channel rate.

The invention provides a set top box with a WIFI (Wireless Fidelity) module. The set top box comprises a set top box body, wherein an external USB (Universal Serial Bus) interface, a functional press key, a power supply indication lamp, a signal locking indication lamp and an SD (Secure Digital) card reader socket are arranged on a front panel of the set top box body, wherein heat dissipation holes are arranged in side plates of two ends of the set top box body; an output interface, a user interactive interface and a three-network fused interface are arranged on a rear terminal board of the set top box body; the set top box body is internally provided with a main control circuit; the main control circuit comprises a main chip, a WIFI module, a demodulator, a TS (Transport Stream) demultiplexing device, a multimedia decoder, a multimedia encoder, a flash memory, an inner memory and an input / output control circuit. According to the set top box disclosed by the invention, network transformation cost is saved and a plurality of networks are fused and accessed; meanwhile, a television program is played and Internet is accessed or three-screen interaction is realized; and after an intelligent terminal passes through WIFIAP (Wireless Fidelity Access Point) authentication in real time, the intelligent terminal can be subjected to intelligent interaction with the set top box; and the invention provides a more flexible and humanized operation manner for users.

The invention provides a terminal resource management system for a multi-application process embedded system and a method. All application processes need to call specific application program interfaces to access terminal resources; the terminal resources are a set of capabilities provided by a terminal hardware platform and comprise a CPU (Central Processing Unit), a memory, a hard disk, a decoder, a demultiplexer, a graphic engine, and the like; when a plurality of applications are simultaneously operated, dynamic priorities for the application processes are set up according to the types of the applications and a statistical regularity that users use the applications; when some kind of terminal resources is overloaded or is in a conflict because more applications are operated in a system, the terminal resources are optimally allocated and dispatched by combining an application process status control method and the priorities so as to preferably ensure the reliable operation of applications with high priorities. The terminal resource management system for the multi-application process embedded system and the method have the advantages that: the controllability and the safety for accessing shared terminal resources are improved; and the terminal resource management based on user experience is achieved, the reliable and efficient operation of applications which users pay more attention to can be preferably guaranteed so as to improve the user experience.

A mechanism for remoting Twain function calls within a user session to a client system is disclosed. By hooking Twain function calls made by a Twain application on the server, the Twain function calls may be remoted over a virtual connection to a client system. A proxy application corresponding to the server-based Twain application is created on the client system. The proxy application communicates with the server and makes the appropriate function calls to the remainder of the Twain framework. The use of the proxy application allows multiple applications and devices to be supported simultaneously. Messages sent over the virtual connection are filtered prior to transmission thereby limiting the amount of required communication traffic. A multiplexor and demultiplexor are utilized in order to efficiently use bandwidth on the virtual channel. The present invention additionally compresses image data prior to transmission over the virtual channel.

A moving image coded string is mapped with a set of information areas as one packet, and each packet is added with an error code and control information in a multiplexing part so that it is decided at the receiving side, from the result of error detection by decoding the error detection code, whether an error has occurred in each information area of the packet.

A reconfigurable optical add drop module has a coarse demultiplexer, for outputting sub bands of wavelengths, a fine mux / demux, for adding and / or dropping wavelengths, a coarse multiplexer, for remultiplexing the sub bands, an optical switch in between the coarse demultiplexer and the fine mux / demux, to switch the sub bands for pass through, or for add / drop. Reconfiguration can be remote, automatic, with less interruption to traffic. By switching sub bands rather than individual wavelengths, the number of switches can be reduced, and consequently losses, and space requirements can be reduced. Also, upgrading from pass through to add drop, of one or more sub bands is easier. Hence initial capital cost of nodes and the cost of upgrading can be reduced, since there is less need to provide redundant add drop capacity initially. Mid stage access enables external components to be added to the optical path for the sub bands.

A transmission apparatus (101) includes: a license data input unit (202) that accepts an input of license data which permits reproduction of a storage content linked from a streaming content; a multiplexer (204) that generates multiplexed data by multiplexing the inputted license data on a broadcast content for a predetermined period of time; and an output unit (206) that transmits the generated multiplexed data to a content reproduction apparatus (102) via digital broadcast.The content reproduction apparatus (102) includes: a receiving unit (301) that receives multiplexed data; a demultiplexer (302) that extracts license data and a broadcast content from the received multiplexed data; and a content reproduction unit (307) that reproduces the extracted broadcast content, and when obtaining a storage content whose reproduction is permitted based on the extracted license data, reproduces the obtained storage content based on the license data by switching the reproduction from the broadcast content to the storage content.

A fully "time tunable" all-optical demultiplexer selects which digital bits or groups of bits in an all-optical data packet or all-optical data burst are to be read / demultiplexed. The all-optical demultiplexer is implemented in either a semiconductor hybrid or in a completely monolithic form. The all-optical demultiplexer is formatted in either a "normally on" or "normally off" configuration. Variable time delay elements adjust the time delay of a clocking signal input and a data packet input. The clocking signal determines the state of two nonlinear optical elements, such as semiconductor optical amplifiers, incorporated in the upper and lower arms of a Mach-Zehnder configuration. Only desirable digital bits or groups of bits are outputted from the demultiplexer. All other undesirable bits are suppressed.

Techniques for WDM Mux / DeMux on cable and methods of making the same are described According to one aspect of the present invention, a unit designed to provide multiplexing or demultiplexing (Mux / Demux) functions is implemented on cable. In other words, the Mux / Demux unit is coupled by a multi-fiber cable to a system (e.g., a system rack for router or switch that has multiple pluggable transceiver slots).

The present invention relates to a LCOS display driving system. The driving sequential control block generates a control code representing a loading sequence of the R, G, and B data for pixels in one of scan lines. The multiplexer multiplexes the R, G, and B data from latches according the control code. The shared level shifter shifts the level of the R, G, and B data from the multiplexer. The digital analog converts converting the R, G, and B data to a corresponding analog R, G, and B data voltage. The shared unity-gain buffer stores the analog R, G, and B data voltage from the shared digital analog converter. The demultiplexer demultiplexes the analog R, G, and B data voltage according the control code.

An optical multiplexer / demultiplexer is described. In this optical multiplexer / demultiplexer, multiple coupled-waveguide grating devices are optically coupled to a bus optical waveguide. A given coupled-waveguide grating device has a band-pass filter characteristic that encompasses multiple optical channels, thereby providing coarse optical filtering. Moreover, the optical multiplexer / demultiplexer includes multiple add / drop filters (such as ring resonators) that optically couple to the coupled-waveguide grating devices. A given add / drop filter has a filter bandwidth corresponding to a given optical channel, thereby providing fine optical filtering. Furthermore, the band-pass filter characteristic of the given coupled-waveguide grating device is approximately equal to or less than a free spectral range (FSR) of the given add / drop filter.

A first CN code (silence code) obtained by encoding a silence signal, which is contained in an input signal, by a silence compression function of a first speech encoding scheme is transcoded to a second CN code of a second speech encoding scheme without decoding the first CN code to a CN signal. For example, the first CN code is demultiplexed into a plurality of first element codes by a code demultiplexer, the first element codes are each transcoded to a plurality of second element codes that constitute the second CN code, and the second element codes obtained by this transcoding are multiplexed to output the second CN code.

The invention relates to a set top box device with WIFI (Wireless Fidelity) hot spots. The set top box comprises a core circuit, a tri-network integration interface, an output interface and a user interaction interface; the core circuit comprises a main chip, a wireless network card, a demodulator, a Ts flow demultiplexer, a multimedia decoder, a multimedia encoder, a flash memory, an internal memory and an input and output control circuit; the three-network integration interface comprises a broadcasting network interface, a telecommunication network interface and an internet interface; the output interface comprises a video output interface and an audio output interface; the main chip is respectively connected with the wireless network card, the Ts flow demultiplexer, the multimedia decoder, the flash memory, the internal memory and the output and output control circuit; and the video output of the multimedia decoder is connected with the multimedia encoder and the audio output interface, and the audio output of the multimedia encoder is connected with the audio output interface. The set top box device disclosed by the invention supports multiple access modes, can be interacted with an intelligent terminal, realizes a touch screen-type remote control function and is capable of wirelessly transmitting programs to be received by the intelligent terminal.

Disclosed is a display device using a demultiplexer. The demultiplexer sequentially samples data currents that are time-divided and applied by a data driver, and holds them to a plurality of data lines. Since the demultiplexer is to sample the data currents corresponding to N data lines during a horizontal period when performing 1:N demultiplexing, the data current corresponding to one data line is to be sampled during a 1 / N horizontal period. According to one embodiment, a signal line coupled between the demultiplexer and the data driver is precharged with particular voltage before sampling the data current. The precharge voltage is sufficient to allow current transmitted to the signal line to be substantially sampled within a a given sampling time after the precharge voltage is applied.

An encryption device eliminates data contention and minimizes area by accessing twice data for a given time by using a memory device of two times faster access time. The encryption device for performing encryption of plain text blocks using data encryption standard algorithm, wherein the encryption device includes an initial permutation unit, a data encryption unit having n-stage (n is an even number) pipeline structure using a first clock, a second clock and a third clock, and an inverse initial permutation unit, the encryption device includes: a multiplexer for selecting one of n / 3 48-bit inputs; 8 S-Boxes, each for receiving 6-bit address among the selected 48-bit and outputting 4-bit data; a demultiplexer for distributing 32-bit data from the S-Boxes to n / 3 outputs; and a controller for control the multiplexer and the demultiplexer with a fourth clock and a fifth clock, wherein the fourth and the fifth clock are faster than the first, the second and the third clocks by n / 3 times.

An apparatus and method are provided for receiving data generated by sequentially performing bit interleaving, symbol interleaving and symbol mapping in a wireless communication system. A fast Fourier transform (FFT) processor receives in-phase / quadrature phase (I / Q) data of a radio channel generated by sequentially performing bit interleaving, symbol interleaving and symbol mapping, and performs an FFT process for the I / Q data. A symbol deinterleaver performs a process for symbol deinterleaving the FFT I / Q data and reference values to be used for symbol demapping of the I / Q data and outputs the symbol-deinterleaved I / Q data and reference values. A symbol demapper performs a process for symbol demapping the symbol-deinterleaved I / Q data according to the reference values. A bit deinterleaver performs a process for bit deinterleaving the symbol-demapped data. A demultiplexer demultiplexes the bit-deinterleaved data.

An organic light emitting display adapted to be driven using a frame divided into a plurality of sub-frames includes a scan driver adapted to sequentially provide a scan signal to scan lines every sub-frame, a data driver adapted to provide an output signal to an output line when the scan signal is supplied to the data driver, a demultiplexer adapted to separate the output signal into a plurality of data signals, and a storage section adapted to simultaneously provide the plurality of data signals from the demultiplexer to a corresponding plurality of data lines.

A touch apparatus including a touch panel and a touch sensing circuit is provided. The touch panel includes a first transparent substrate, a plurality of first conductive patterns, a second transparent substrate, a plurality of second conductive patterns and a plurality of spacers. The touch sensing circuit includes a first demultiplexer, a second demultiplexer, a first multiplexer, a second multiplexer, a third multiplexer, a fourth multiplexer, a fifth multiplexer, a sixth multiplexer and an analog / digital converter (ADC). The fifth multiplexer and the sixth multiplexer are used for modulating a signal receiving range of the ADC and thus the touch sensing circuit is easily judge a correctness of a sensing signal.

A reconfigurable ADD / DROP multiplexer / demultiplexer apparatus is implemented by connecting a multiplexer / demultiplexer apparatus to a serializer / deserializer (SERDES) apparatus having a loop-back capability. By selectively activating the loop-back functionality of the SERDES apparatus the combination can be made to function as a reconfigurable ADD / DROP multiplexer / demultiplexer apparatus.

The invention discloses a method for realizing the coexistence of unsymmetrical 10GEPON and GEPON optical network terminals and a system thereof. A wavelength division multiplexer is used for combining downlink waves with the wavelength of 1580nm to 1600nm (PRX10 and PRX20) or 1574 to 1580nm (PRX 30) of an OLT optical-electrical module in a 10GEPON and downlink waves with the wavelength of 1480nm to 1500nm of an OLT optical-electrical module in a GEPON into an optical fiber; and a wavelength-division demultiplexer is used for demultiplexing uplink waves with the wavelength of 1260 nm to 1360nm of the 10GEPON and the GEPON to a receiving end of the OLT optical-electrical module; and the OLT optical-electrical module in the 10GEPON and the OLT optical-electrical module in the GEPON multiplex one receiving device. The adoption of the technical proposal can lower the cost of network establishment, reduce inserting consumption of network connection and result in the easier realization of seamless smooth upgrade from GEPON to 10GEPON.

A VSB reception system includes a sequence generator for decoding a symbol corresponding to the supplemental data and generating a predefined sequence included in the supplemental data at VSB transmission system. The reception system also includes a modified legacy VSB receiver for processing the data received from the VSB transmission system in a reverse order of the VSB transmission system by using the sequence, and a demultiplexer for demultiplexing the data from the modified legacy VSB receiver into the MPEG data and the supplemental data. The VSB reception system also includes a supplemental data processor for processing the supplemental data segment from the demultiplexer in a reverse order of the transmission system, to obtain the supplemental data, thereby carrying out the slicer prediction, decoding, and symbol decision more accurately by using the predefined sequence, to improve a performance.

A tunable (reconfigurable) OADM provides multiple drop ports and multiple add ports by which desired channels can be removed from, or added to, a composite optical signal. In one embodiment, a programmable demultiplexer is arranged to receive an input signal containing components at x different wavelengths from an optical input port, and distribute the input signal components among K output ports. K−1 of the output ports are the “drop” ports of the OADM, and cumulatively contain w different wavelengths. The remaining port, which is the “through port” that carries the z wavelengths not dropped from the original input signal, is connected to the first port of an M port programmable multiplexer having M−1 other input ports. The remaining M−1 ports are the “add” ports of the OADM, which cumulatively receive v different wavelengths to be added by the OADM.

An optical communication network system and a wavelength-routing device and a communication node therefor are provided which can easily increase the optical paths between communication nodes, which are capable of expanding transmission capacity, and which excel in flexibility and expandability. An optical signal within a wavelength band (λBm±Δλm) which has been transmitted from a predetermined communication node (200-1 through 200-4) is subjected to wavelength-band demultiplexing of the wavelength bands by wavelength-band demultiplexers (220-1 through 220-4) of a wavelength-routing device (210), and is then subjected to wavelength-routing by arrayed-waveguide gratings (241 through 244) according to the wavelength bands, and furthermore is multiplexed with optical signals of other wavelength bands by wavelength-band multiplexers (230-1 through 230-4), and after having been outputted, is transmitted to a communication node. In this manner, by varying the wavelength band (λBm±Δλm) of the wavelength of the optical signal which is transmitted from the communication node, it becomes possible to establish a single optical path between the communication nodes for each wavelength band.

An internal system time clock (201) within an MPEG-2 decoder is synchronized in frequency and optionally in phase, but not in value, to program clock reference time stamps within a received MPEG-2 transport stream. A demultiplexer (202) separating audio and video packets from the transport stream modifies the decoding and presentation time stamps within such packets by at least an offset between the program clock reference time stamp values and the internal system time clock time before forwarding the packets to the audio and video decoders. Discontinuities in the program clock reference time stamp sequence automatically result in a change in the offset, such that the internal system time clock continues to increase monotonically and decoding and presentation time stamps within the packets are not suddenly invalidated.

A set-top box system and method for viewing digital broadcasts. A set-top box system for viewing digital broadcasts includes: a plurality of televisions (TVs); and one set-top box for receiving digital broadcasts including multi-programs, and transmitting single programs selected by program selection requests of TV viewers to the plurality of TVs, the set-top box including: a memory having a program guide database of digital broadcasts; a tuner and demodulator for selecting and demodulating digital broadcasts of a main channel preset in the memory in the received digital broadcasts, and generating the demodulated digital broadcasts as a multi-program transport stream; a controller for controlling each of the sub-channels corresponding to each program selection request of the TV viewers by adopting packetized ID (Identification) information of the multi-program transport stream and the program guide database; a plurality of transport demultiplexers for selecting sub-channels responsive to each program selection request of the TV viewers upon receiving a control signal of the controller, and respectively providing single programs on the selected sub-channels; a plurality of single program decoders for decoding the single programs, respectively; and a transmitter for transmitting the decoded single programs.

A front end circuit for a television receiver includes a demultiplexer for inputting a multi-band signal from a signal source and separating the multi-band signal into corresponding bands. A plurality of amplifiers adjust gain on signals corresponding to the bands. A multiplexer combines outputs of the amplifiers into a gain-adjusted signal. A plurality of switches direct selected bands to corresponding tuners. The amplifiers are low noise amplifiers. The amplifiers adjust gain between the bands so as to have similar signal strength in the bands. A cable TV input may also be used, wherein the switches also direct signals from the cable TV to the corresponding tuners. Each amplifier can output two (or more) identical signals for its corresponding band, the multiplexer can be a dual multiplexer, and an output of the multiplexer includes only bands selected for direction to the tuners. The signal source comprises any of a broadcast channel received from an antenna, a cable TV channel received from a cable line, and a combination of the two.

A method and apparatus are provided for flexible time-division multiplexing, and demultiplexing, of serial line data, from 1-n client lines, based on the SONET standard (e.g. OC-48 or OC-192) whereby a predetermined and reconfigurable number of STS-1s are allocated to each client. A multiplexer includes 1 to n mappers for mapping the data of 1 to n clients, according to a predetermined bandwidth allocation, to an N×STS-1 SONET payload, each mapper using y STS-1s where y is 0 to N, the y STS-1s being selected on a sequential or non-sequential concatenation basis from the N STS-1s. Each mapper maps the data of one client and each allocated STS-1 is allocated to one client and the total number of STS-1s allocated to the clients is less than or equal to N. An aggregator aggregates the mapped data into a composite STS payload comprising N STS-1s. A bandwidth allocation receiver receives the bandwidth allocation. The bandwidth allocation may be received from a source external to the multiplexer and the source may be a network controller. A demultiplexer includes a deaggregator for deaggregating the STS payload to provide the mapped data for the clients. 1 to n demappers demap the client data according to the predetermined bandwidth allocation. A bandwidth allocation receiver receives the bandwidth allocation.

Various embodiments of the present invention are directed multi-core memory modules. In one embodiment, a memory module (500) includes memory chips, and a demultiplexer register (502) electronically connected to each of the memory chips and a memory controller. The memory controller groups one or more of the memory chips into at least one virtual memory device in accordance with changing performance and / or energy efficiency needs. The demultiplexer register (502) is configured to receive a command indentifying one of the virtual memory devices and send the command to the memory chips of the identified virtual memory device. In certain embodiments, the memory chips can be dynamic random access memory chips.