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Topic: Statistically multiplexed

Related Topics

wavelength division multiplexing

time division multiplexing

Frequency division multiplexing

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	Planar: LCD (Liquid Crystal Display) technology explained
		As the twist is increased, the LC molecules in the middle of the layer are aligned with the applied electric field by smaller changes in voltage.
		A multiplexed LCD is partitioned as a matrix consisting of M rows and N columns.
		The maximum acceptable multiplex order depends on the sharpness of the contrast vs. voltage curve, required operating temperature range, and the viewing cone requirements of the particular application.
	www.planar.com /advantages/technology/lcd (1457 words)

	Statistical multiplexing - Wikipedia, the free encyclopedia
		Statistical multiplexing is a type of time-domain multiplexing for transferring several data streams with varying data rates over a digital channel.
		Statistical multiplexing allows the bandwidth to be divided arbitrarily among a variable number of channels (while the number of channels and the channel data rate are fixed in TDM).
		Statistical multiplexing is used to allow several video, audio and data streams of different data rates to be transmitted over a bandwidth-limited channel (see Statistical multiplexer).
	en.wikipedia.org /wiki/Statistical_multiplexing (344 words)

	Digital communication network architecture for providing universal information services - Patent 4763317
		The multiplexer and demultiplexer connects the channels of a plurality of narrowband first channel sets with the second channels of a narrowband-carrying channel, to establish narrowband communication paths between the central node and the interface arrangements connected to the remote node.
		A similar multiplexing arrangement (not shown) to that just described may be used for a half-duplex fiber 105, the difference being that only one wavelength periodically alternating in direction is carried by fiber 105, and time-compression multiplexing techniques are used to multiplex both upstream and downstream channels onto the wavelength during alternate time periods.
		Its function is the converse of the multiplexer function: it demultiplexes downstream channels 306 of fibers 107 into their constituent downstream channels 206 and distributes channels 206 to the appropriate subscribers' distribution fibers 105.
	www.freepatentsonline.com /4763317.html (14685 words)

	[No title] (Site not responding. Last check: 2007-10-20)
		An effective way to provide statistical multiplexing while ensuring appropriate QOS for VBR video is to engineering rules for the amount of bandwidth and buffers which are necessary for a given number of multiplexed sources.
		Since this bounds the statistical multiplexing gain, we could argue that CBR transport is moderately efficient for real-time audio and video applications.
		First, the statistical behavior and some knowledge of the required QOS can be used to produce resource allocation rules which realize the statistical multiplexing gain while retaining appropriate QOS.
	www.mathcs.emory.edu /~cheung/papers/ATM/ATMF.qos.mwg (5818 words)

	Advertisement insertion techniques for digital video streams - Patent 6704930
		a statistical multiplexer to insert selective ones of the advertisements into the digital program streams, wherein the bit rate of the digital program streams may be dynamically adjusted at point of insertion.
		a statistical multiplexer for determining if the minimum acceptable bit rate is greater than or less than the advertisement insertion opportunity bit rate and inserting the digitally compressed advertisement when the minimum acceptable bit rate is less than the advertisement insertion opportunity bit rate.
		The apparatus of claim 31, wherein said statistical multiplexer halts the insertion of the digitally compressed advertisement when the minimum acceptable bit rate is greater than the advertisement insertion opportunity bit rate.
	www.freepatentsonline.com /6704930.html (6489 words)

	A Survey on Connection Admission Control in ATM Networks
		The last issue for statistical CAC algorithms is the traffic modeling of a vast range of characteristics of the arrival processes.
		The delay and delay-jitter guarantees are provided through the use of a modified framing strategy in which the statistical characteristics of the streams are taken into account, and the bandwidth allocation when the channel is active is performed over a continuous range of values [7].
		The gain from statistical multiplexing of bursty sources is taken into account so that bandwidth allocated to a connection is between the peak rate and the average rate of the connection.
	facweb.cs.depaul.edu /ctiphd/ctirs99/online/tian.html (3537 words)

	Readers chime in, Part 1
		Statistical multiplexing, time division multiplexing (TDM) and frequency division multiplexing are the three main ways to share networks.
		CBR acts much the same way, because even though it is statistically multiplexed, the statistical probability of getting traffic across a CBR channel without noticeable latency, with extremely low jitter and at a constant rate is essentially the same as with a TDM channel.
		VBR uses statistical multiplexing and follows the postal stamp model; you get the network priority based on the kind of stamp you put on the envelope.
	www.networkworld.com /newsletters/converg/2001/01047556.html (623 words)

	Creating smarter headends - 6/1/1999 - CED - CA6260916 (Site not responding. Last check: 2007-10-20)
		Traditional statistical multiplexing techniques are applied to transport streams built from local digital video servers, which saves some bandwidth, but is too limited in scope for this new era of satellite sources and bundled services.
		A common application is multiplexing locally encoded, constant bit-rate programs with a statistically multiplexed satellite feed from which programs have been dropped (see Figure 1).
		Without the ability to re-statistically multiplex the remaining programming from the satellite feed, the amount of bandwidth available for the constant bit-rate programs is unpredictable, and therefore unsuitable.
	www.cedmagazine.com /article/CA6260916.html (1335 words)

	MFA Forum
		Statistical multiplexing avoids the need to pre-allocate resources for a user, but allocates resources on-demand, providing bandwidth to users when, and only when, they need it.
		This multiplexing overcomes the packetization delay issues resulting from the use of low-bit-rate voice encoding.
		Consequently, the packetization delay is much reduced, as the data rate perceived by the SAR function is the sum of the data rates of all the calls included in the multiplexed stream.
	mfaforum.org /education/2.shtml (4988 words)

	Application of the many sources asymptotic and effective bandwidths to traffic engineering\thanks{This work was ... (Site not responding. Last check: 2007-10-20)
		Unlike the effective bandwidth definition (1) which takes into account the effects of statistical multiplexing, the effective bandwidth based on the large buffer asymptotic depends solely on the characteristics of the source and the QoS constraint.
		The explanation of the steep decrease of s in Figure 8(a) is similar to the explanation of the ``knee'' of the curves in Figures 2 and 4.
		But for a link that multiplexes smooth traffic and is operating with a cell loss probability greater than zero, a change of the capacity has a greater effect on the overflow probability compared to a link multiplexing more bursty traffic.
	nes.aueb.gr /publications/1999.ts.msa2.html (7954 words)

	Bandwidth problems in high-speed networks
		The sum of the capacities of the embedded links multiplexed on the backbone must not exceed the capacity of the trunk itself [1].
		Because of statistical fluctuations, unused bandwidth may exist; any such unused bandwidth is available to other traffic in the system.
		The virtual path is defined as a labeled path (bundles of multiplexed circuits) terminated by virtual path terminators which can identify each connection from or to the network elements (terminals) that are included in the segment network to which the virtual path terminals belong.
	www.research.ibm.com /journal/rd/446/ismail.html (8370 words)

	IBM Research - Performance Modeling & Analysis - History
		It was enhanced over time with additional computational algorithms and statistical methods, a graphical user interface, simulation animation and other features, and its widespread use in IBM continued into the 1990s.
		An important aspect of this traffic management problem is to characterize the effective bandwidth requirement of both individual connections and the aggregate bandwidth usage of multiple connections statistically multiplexed on a given network link, as a function of their statistical properties and the desired level of service.
		While the fluid model and its extension to capture the impact of multiplexing can be used to obtain an exact computation of the bandwidth requirement, the computational complexity involved is too high in general, and particularly for real-time network traffic management.
	www.research.ibm.com /compsci/performance/history.html (2989 words)

	Blueprint: Telco Triple Play
		Statistically multiplexed MPEG-2 Digital feeds are converted into constant bit rate feeds, and the transport streams from the satellite are streamed out to single program streams.
		This eliminates the need for multiplexing, a must in more traditional methods of broadcast video delivery such as satellite and cable.
		The broadcast signal is multiplexed across the two wires to double the capacity.
	www.convergedigest.com /blueprints/ttp03/z5tandbergtv2.asp?ID=58&ctgy=Headend (813 words)

	Tektronix MBD: Applications > Picture Quality Guide: Picture Quality Testing (Site not responding. Last check: 2007-10-20)
		Picture quality is a function of the complexity of the program material and, in the case of statistical multiplexing, the moment to moment operation of the transmission system.
		Such statistics would be mean JND, max JND and Q-norm, which allows a generalized approach to mean and max calculations.
		This is important for statistically multiplexed encoding systems where bit rates are shared between programs with the potential that any part of program could be stressful to the encoding process due to the bit rate allowed.
	www.tek.com /Measurement/App_Notes/PicQuality/quality.html (4136 words)

	Statistical Multiplexing
		This is a discussion of statistical multiplexing, and the difference between the old paradigm of time division multiplexing and the new paradigm of statistical multiplexing.
		The entire Internet is a statistically multiplexed place, unlike the Telephone network, which is a "deterministically" multiplexed place.
		So there you have a discussion of "data communications" and "telecommunications." Increasingly in this day and age, everything is being provided over data communications transport, which means "statistically multiplexed transport," because of the traffic and usage characteristics of the underlying data, and the ability to build the underlying transport with tremendous excess bandwidth.
	www.pccitizen.com /statmux.htm (576 words)

	Rho Venture Capital: 2005 News
		The Redhawk is the first 10GE MAC to aggregate up to two-ports in line rate and statistically multiplexed network applications, saving customers vital board space.
		The chips can also be seamlessly daisy-chained together to expand aggregation to 4:1 and higher statistical multiplexing ratios, providing system vendors over 50-percent per port silicon cost reduction.
		The key chip differentiator is its rich set of multiprotocol, MPLS and IPv6 aware classifiers and deep buffers allowing users to prioritize traffic and assure quality of service in multi-port, statistically multiplexed enterprise and metro applications.
	www.rhomanagement.com /venture_capital/vc_news/05/ample_091305.html (566 words)

	Corrigent Systems
		IPTV and VOD are transported over a packet infrastructure that allows for the statistical multiplexing of data traffic therefore maximizing utilization of the network resources at all times.
		When there is high VOD concurrency, for example, this enables all VOD streams to be statistically multiplexed with multicast channels and Internet access, allowing service providers to maximize the use of the network resources without requiring to expand capacity.
		This, together with statistical multiplexing over the shared media, enables maximum bandwidth utilization in situations where traffic is asymmetric, distributed or services are configured as, e.g., hub and spoke as in the case of VOD.
	www.corrigent.com /solu_tripleplay.php (760 words)

	Tandberg Offers Pretty Pictures, Prettier Features - 3/3/2003 - Broadcasting & Cable
		In the fourth quarter, the second phase will add statistical multiplexing of the HD signal and 4:2:2 encoding, a capability previously unavailable in the market.
		Statistical multiplexing allows more efficient use of available bandwidth because bits are allocated more properly and wasted less.
		But now we'll be able to put both the SD and HD signals into one statistically multiplexed group, and they'll share bits across them.
	www.broadcastingcable.com /article/CA280602?display=Technology (799 words)

	GL Communications - Glossary of Terms
		Frame - Frame is a array of bits where signals and data are encrypted in a particular fashion.
		Frame Relay - An interface protocol for statistically multiplexed packet-switched data communications in which (a) variable-sized packets (frames) are used that completely enclose the user packets they transport, and (b) transmission rates are usually between 56 kb/s and 1.544 Mb/s (the T-1 rate).
		Multiplexing - To sequentially incorporate several data streams into a single data stream in such a manner that each may later be recovered intact.
	www.gl.com /glossary.html (1303 words)

	FEUP - Experiments with dynamic multiplexing and UPC renegotiation for video over ATM
		VBR video sources are statistically multiplexed at the application level and the UPC parameters of a single connection for the aggregate traffic are dynamically renegotiated with the network during the session lifetime.
		A statistical multiplexer computes the required bandwidth for the agreggate traffic and dynamiccally assigns bandwidth according to the performances requested and network resources availability.
		A dynamic UPC manager using feedback information sent by the network, may initiate a renegotiation of traffic parameters upon receiving a request from the statistical multiplexer.
	www.fe.up.pt /si_uk/publs_pesquisa.FormView?P_ID=4213 (189 words)

	Apparatus and method of processing bandwidth requirements in an ATM switch - Patent 5577035
		Handling statistically multiplexed bursty data services and handling multicasting traffic are probably two of the most complex tasks to perform in an ATM switch.
		The dynamic bandwidth allocation (DBA) protocol was designed to encapsulate an ATM switch to offer statistical multiplexing of bursty data services by offering a fair method of sharing bandwidth between cells destined for different outputs and by storing in a queue data which cannot be transferred immediately across the switch.
		It is an object of the present invention to provide an apparatus and a method for processing bandwidth requirements which solves the problem of statistically multiplexed multicast traffic at a multiplexing point.
	www.freepatentsonline.com /5577035.html (5053 words)

	Amplicon Liveline supply a wide range of Industrial Computer Equipment including
		It assumes that a fixed set of operating conditions exist, and that the instrument parameters statistically average to provide a typical operating accuracy throughout its measuring range.
		It is generated by storing the multiplexed BCD in latch circuits so that the BCD characters for all of the decades are available in parallel.
		Multiplexer: A multiple way analog switch q.v., where a single path through the switch is selected by the value of a digital control word.
	www.amplicon.co.uk /glossary.cfm (4457 words)

	CommsDesign - Design challenges for multi-protocol services
		Additionally, the LAN extension services can be statistically multiplexed over a shared SONET/SDH channel for bandwidth efficiencies.
		Additionally, the LAN extension services can be statistically multiplexed over a single shared SONET/SDH channel for additional bandwidth efficiencies.
		This is quickly evolving to flexible topology (point-to-multi-point, ring, linear, mesh) connections with statistically multiplexed data services over a SONET channel(s), which yields greater network efficiencies, connectivity, and customer services.
	www.commsdesign.com /design_corner/showArticle.jhtml;jsessionid=MTBFSI01XQN3MQSNDBCSKHQ?articleID=17601476 (2900 words)

	[No title]
		I am investigating the performance patterns arising in statistically shared high-speed data networks when buffers are scarce—for example, the congestive collapse problem, and the bias against connections traversing a large number of highly loaded links.
		The goal is to limit the space of admissible resource allocation schemes, and to produce a transmission control protocols that ensures efficient bandwidth sharing and supports statistical bandwidth guarantees.
		First, limiting the buffer size in a statistically multiplexed network is desirable from the point of view of delay-sensitive applications such as VoIP and interactive video.
	www.cs.pitt.edu /~elhaddad/elhaddad.doc (663 words)

	CommsDesign - Switched Ethernet Brings Packet Data to Metro Rings
		In a multiplexed EoS network implementation, a Gigabit Ethernet port on a source node behaves as an extension of the Sonet/SDH circuit that connects the source to a destination node on the ring.
		An alternative to multiplexed EoS is switched EoS, which enables each Gigabit Ethernet port to switch traffic to multiple destinations on a metro ring at wire speeds.
		In a multiplexed EoS architecture, that port-count explosion has to be replicated in all the nodes in the network, adding to overall cost.
	www.commsdesign.com /story/OEG20020402S0033 (1635 words)

	WSTA Publication (Site not responding. Last check: 2007-10-20)
		Dedicating a channel (like an optical fiber or DWDM wavelength) to a business continuance application has been a popular choice and delivers high levels of security.
		Statistical multiplexing schemes like IP, VPNs, Ethernet and VLANs allow multiple applications to share the same channel.
		The data from each application is tagged with a special identifier that tells the network which application owns which data.
	www.wsta.org /publications/articles/1002_article09.html (613 words)

	News Item :: In the News :: Columbia Capital (Site not responding. Last check: 2007-10-20)
		The Optical Spatial Division Multiplexing (OSDM) architecture allows carriers to significantly multiply their revenue from data services while continuing to efficiently transport traditional Time Division Multiplexing (TDM) services over fiber.
		OSDM is the industry's first architecture that provides the economies of over-subscription and statistical multiplexing over an entire optical network.
		Coriolis Networks, founded in 1999, is developing a family of products based on the Optical Spatial Division Multiplexing (OSDM™) architecture that deftly bridges the gap between high cost, but reliable SONET environments, and highly scalable, but difficult to manage IP solutions.
	www.colcap.com /news/0900/091800.html (787 words)

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