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Topic: Bandwidth compression

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		The amount of bandwidth compression in an encoded fringe is measured by the compression ratio, CR: (2) where the spectrum is assumed to range from 0.0 to the sampling limit of 0.5 cycles/sample.
		The hogel-vector bandwidth (Equation 10) is N = 220 symbols/hogel.
		Hogel-vector bandwidth compression provides the speed and portability required to generate large fringes for a holographic "fringe printer." The analysis of hogel-vector bandwidth compression has revealed a simple expression relating the fundamental system parameters of bandwidth, image resolution, and maximum image depth.
	www.research.ibm.com /journal/sj/353/sectiona/lucente.txt (7148 words)

	Bandwidth and compression (Site not responding. Last check: 2007-10-09)
		Bandwidth is the amount of information that can be moved across the Internet in a given amount of time; usually measure in bits per second.
		This is called lossy compression, because some unimportant information may be discarded.
		Almost any other kind of file, even word processing documents, is probably a binary file, and will compress nicely.
	www.templejc.edu /dept/cis/CCollins/ITSC1313/bandwidth.html (861 words)

	Speech Compression
		With current compression techniques (all of which are lossy), it is possible to reduce the rate to 8 kbps with almost no perceptible loss in quality.
		ADPCM (32000 bps) This is speech compressed using the Adaptive Differential Pulse Coded Modulation (ADPCM) scheme.
		CELP (4800 bps) This is speech compressed using the Code Excited Linear Prediction (CELP) scheme.
	www.data-compression.com /speech.html (940 words)

	ACUTUS (Site not responding. Last check: 2007-10-09)
		The compression challenge is to achieve the highest-quality image or video given the constraints of both bandwidth, speed and channel reliability, this is achieved by the Acutus Inc. solution.
		Efficient use of bandwidth can be accomplished in many ways, but source encoding, of which lossy compression is a subset, is a critical method for meeting bandwidth constraints and this is the Acutus Inc. approach.
		Compression multiplies the impact of an error, and is a limiting factor to the susceptibility of the compressed data stream to errors and the ability to get the data through the channel fast.
	www.acutus.com /COHistory.asp (1929 words)

	Signal processor (system) for reducing bandwidth and for multiplexing a plurality of signals onto a single ...
		The bandwidth required for a regularly occurring signal, such as a television signal, as received from a signal source can be substantially reduced by not transmitting each and every one of the horizontal scan lines.
		The bandwidth may be further reduced by a time expansion of the time interval of the selected line signal and by a time compression of the time interval of the differential signal.
		The bandwidth required for each regularly occurring signal as received from each of a plurality of N signal sources may be more efficiently used by time compression multiplexing the respective time expanded and time compressed signals.
	www.freepatentsonline.com /4589110.html (5530 words)

	Compression article - Compression physical compression data compression multimedia compression - What-Means.com (Site not responding. Last check: 2007-10-09)
		Compression article - Compression physical compression data compression multimedia compression - What-Means.com
		This is a disambiguation page; that is, one that points to other pages that might otherwise have the same name.
		Compression article - Compression definition - what means Compression
	www.what-means.com /encyclopedia/Compression (77 words)

	Bandwidth basics
		Payload bandwidth is what is left after the number of overhead bits is subtracted from the path bandwidth.
		Compression, or bit-rate reduction, provides a means to reduce the overall number of bits needed to convey signals.
		High-quality compression allows the 1.5Gbps HD signal to be compressed to the 19.4Mbps datastream that is broadcast by today's digital transmitters.
	videosystems.com /mag/video_bandwidth_basics/index.html (1269 words)

	Bandwidth compression - Wikipedia, the free encyclopedia
		The reduction of the bandwidth needed to transmit a given amount of data in a given time.
		Note: Bandwidth compression implies a reduction in normal bandwidth of an information-carrying signal without reducing the information content of the signal.
		This can be accomplished with data compression techniques.
	en.wikipedia.org /wiki/Bandwidth_compression (168 words)

	Bandwidth (Linktionary term)
		Bandwidth is the information-carrying capacity of a communication channel.
		For digital systems, the terms "bandwidth" and "capacity" are often used interchangeably, and the actual transmission capabilities are referred to as the data transfer rate (or just data rate).
		V.42 bis compresses and decompresses on the fly as data is sent and received by connected modems.
	www.linktionary.com /b/bandwidth.html (420 words)

	Bandwidth
		The need to improve effective bandwidth is motivated by the explosive growth of users and service providers using the web, which is currently severely straining the available bandwidth.
		The LZW technique was originally developed for compression of textual material, and compresses files by substituting commonly occurring character sequences with a reference to the first occurrence of that sequence.
		Compressed image size does not generally increase strictly linearly as the image size increases, it increases at a lower rate (ie better effective compression for larger and larger images).
	ausweb.scu.edu.au /aw95/management/vanzyl (2340 words)

	Forget Bandwidth, Compression is the Key :: AO (Site not responding. Last check: 2007-10-09)
		The sensitivity to possible flim flam is understandable becasue the compression segment has been ripe with scams and flim flam for as long as I've been aware of it (longer than a decade, and I've personally been on the receiving end of some of it).
		Compression is a great thing, however a smart network looking at data at the application level (OSI layer 7) would also be a truly great thing.
		Compression systems have already reached mathematical limits and at this point further development is about optimization for particular types of data.
	www.alwayson-network.com /comments.php?id=P2872_0_3_0_C (2573 words)

	Compressing the Web compression and content encoding with gzip http compression shrinks html and javascript for faster ...
		Compression is one of those technologies where it seems like you get something for nothing.
		Compression saves bandwidth and speeds up web sites by removing redundancy to reduce the amount of data sent.
		This compressed file is then decompressed to reconstruct the original, or an approximation thereof.
	websiteoptimization.com /speed/18 (848 words)

	InterQuad Systems - ThinPrint Compression & bandwidth control summary (Site not responding. Last check: 2007-10-09)
		Compression algorithms specifically developed for print data ensure a considerable reduction of the amount of data to be transmitted and prevent dynamic connection of unnecessary data lines.
		If the user does not require high quality printout, he can select between maximum compression or omission of images to drastically reduce the amount of data volume and printer toner he uses.
		Because.print bandwidth control is connection based, it allows for variable limits of bandwidth for individual connections, user groups, or even individual workstations.
	www.interquad.com /products/keyInfoPage.asp?page=39 (184 words)

	TerraCall Prepaid by TechTerra Communications, Inc. (Site not responding. Last check: 2007-10-09)
		To give yourself a true test of your bandwidth that is going to be relevant to your softphone and connection quality, a large file upload and download is the true way to determine your bandwidth.
		Compression: Once you have polled your Internet bandwidth, you are now more equipped to understand the balance of your household/business needs and throughput.
		Broadband users - if you have a bandwidth relatively unaffected by others on a network and you can easily reach 128x2+Kbps, then you should be pretty safe to use G711u, which is our FREE TerraCall client.
	www.terracall.com /FAQs_white_1.aspx (743 words)

	Bandwidth Compression For Continuous Amplitude Channels Based On Vector Approximation To A Continuous Subset Of The ... (Site not responding. Last check: 2007-10-09)
		Bandwidth Compression For Continuous Amplitude Channels Based On Vector Approximation To A Continuous Subset Of The Source Signal Space (1997)
		For both methods, bandwidth reduction is achieved by mapping from a higher dimensional source space to a lower dimensional channel space.
		Bandwidth compression for continuous amplitude channels based on vector approximation to a continuous subset of the source signal space.
	citeseer.ist.psu.edu /fuldseth97bandwidth.html (508 words)

	North American Bandwidth News :: ABO compression reduce bandwidth demand short term, increase it long term? (Site not responding. Last check: 2007-10-09)
		ABO compression from MatrixView looks to be truly disruptive but ultimately a win for the bandwidth industry in the long term.
		Unlike transformation-based compressions like JPEG, ABO utilizes a radically new bit-plane architecture that does not eliminate any data during compression.
		Although the promise of much smaller file sizes suggests that the storage and bandwidth industries may be the losers, the accelerated movement of content into the digital domain and its ability to be moved around networks easily may make them winners.
	nabandwidthnews.blogware.com /blog/_archives/2004/2/17/21013.html (373 words)

	Unknown (ResearchIndex)
		Holographic bandwidth compression using spatial subsampling Subject terms:...
		Abstract: A novel electro-holographic bandwidth compression technique, fringelet bandwidth compression, is described and implemented.
		Fringelet bandwidth compression is a type of diffraction-specific fringe computation, an approach that considers only the reconstruction process in holographic imaging.
	citeseer.ist.psu.edu /647403.html (382 words)

	4 - Additional Remote Networking (Site not responding. Last check: 2007-10-09)
		Compression is enabled and a 2:1 compression rate is expected, which will increase the data transfer between the modems to 57600 bits per second.
		Bandwidth changes in the opposite direction (addition or subtraction) require a delay of double the holddown timer, for example, when bandwidth is removed from irvine, it cannot be added for 60 seconds.
		Compression increases latency due to the time required to compress the data before it is sent.
	www.opus1.com /www/lrs/l_5.htm (6500 words)

	DATA COMPRESSION (Site not responding. Last check: 2007-10-09)
		bandwidth is at a premium and archival storage is an exponentially costly endeavor.
		At this stage, we expect to have papers written proposing a general theory of dictionary based compression and the encoding schemes for the Bzip2 method including more context information than what is provided by the BWT algorithm.
		The performance metrics will include not only the raw compression ratio but will also include communication time (viz., download and uploading time, proxy server time, etc.) and bandwidth utilization (especially in the context of low-bandwidth lines such as those between Internet Service Providers and their clients, etc.).
	longwood.cs.ucf.edu /m5/datacomp.html (1321 words)

	Digital video compression system and methods utilizing scene adaptive coding with rate buffer feedback - Patent 4394774
		It is known and discussed in the prior art relating to television image bandwidth compression that two-dimensional cosine transform techniques have yielded reproduced pictures of superior quality at the same and even higher picture data compression ratios than were obtainable with other transforms or techniques.
		Another object of the present invention is to provide a digital video compression system which implements a two-dimensional transformer of blocks of the picture in which variance calculations, bit allocation matrix calculations, and nonlinear block quantization are eliminated and not required in the compression process.
		The compression normalizes the coefficients by a normalization factor having a predetermined compression ratio component and an adaptive rate buffer capacity control feedback component to provide compression to the transform coefficients and to provide normalized transform coefficients compatible with a predetermined data coding scheme.
	www.freepatentsonline.com /4394774.html (13463 words)

	Telephony: Compress and conquer - Fourelle Systems launches proxy-base compression solution Venturi Bandwidth Multiplier (Site not responding. Last check: 2007-10-09)
		Then, it is transmitted over CDPD links to a Venturi compression server, likely located at the network access point (NAP) to the Internet, for decompression and final routing.
		Responses are compressed at the server proxy and decompressed at the client proxy.
		Compression rates will vary but can average 805 for text message and 35% for graphics.
	www.findarticles.com /p/articles/mi_m0TPY/is_n16_v233/ai_20117653 (579 words)

	Buy Telco - DSL, cable, T-1, internet access solutions for home and business (Site not responding. Last check: 2007-10-09)
		The bandwidth, or baud rate, is the amount of information that is transmitted each second.
		The level of compression may be as high as 100:1, though the higher the level of compression, the lower the quality.
		The purpose of a gatekeeper is to limit conferencing bandwidth to some fraction of the total available, leaving the remainder for such applications as e-mail, file transfers, and other related functions.
	www.buytelco.net /NetworkApplications.asp?ID=633 (2165 words)

	Power-Tuning IIS 5.0 (Site not responding. Last check: 2007-10-09)
		If you move the images into a virtual site of their own and throttle the bandwidth on that site, you can at least provide an upper limit on how much of your bandwidth is being devoted to those resources.
		When I enabled HTTP compression on ASP pages, the results were very strange -- the stream would come through in fits and starts, probably due to boundaries on the content chunks imposed by the compression.
		HTTP compression for static files is immensely useful and should be kept enabled, but compression for dynamic files may behave strangely when combined with certain types of scripts.
	www.extremetech.com /article2/0,1558,1175516,00.asp (841 words)

	Bandwidth Compression and Optimization - Optimizer
		Equipped with network compression it increases effective WAN capacity and further enhances performance through selective flow compression.
		Optimizer® exposes applications that draw the most or least from your network, as well as users or viruses that consume bandwidth at alarming rates.
		Application performance statistics are collected over time and plotted to provide key performance characteristics and to optimize how bandwidth is being used.
	www.webspy.com /products/optimizer/optimizer.aspx (470 words)

	here, but pointless: bandwidth compression
		(You know, to save on the enormous bandwidth costs incurred by all 3 people who use itand#8230;) Itand#8217;s been chugging along, merrily compressing the HTML it sends out to conforming web browsers (which, these days, is pretty much all of them).
		Then, I read Brent Simmonsand#8217; post about RSS Bandwidth and gzip compression and realized I hadnand#8217;t checked my feeds to make sure they were gzipped.
		Then, I read Brent Simmons’ post about RSS Bandwidth and gzip compression and realized I hadn’t checked my feeds to make sure they were gzipped.
	boobah.com /clay/blog/archives/2004/01/03/bandwidth_compression.html (320 words)

	ZipEnable: Safely Deploy, Control IIS 6.0 Built-in Compression :: Port80 Software
		Compression was non-existent on IIS 4 and broken on IIS 5, but Windows Server 2003 with Internet Information Services (IIS) 6.0 now offers great out-of-the-box compression embedded into the core Web server code itself.
		Compression can only be safely deployed with browser checking, as you may wind up sending compressed content to a browser that cannot decompress it!
		IIS 6.0 also does not provide a graphical interface to most controls (necessities like site level compression, compression schemes, and all advanced settings are only accessible via a labor-intensive programmatic interface).
	www.port80software.com /products/zipenable/?vid=2315408 (772 words)

	It's the Latency, Stupid
		In addition, in order to compress data, your modem has to hold on to the data until it has a block that's big enough to compress effectively.
		If you don't have enough bandwidth to send colour images, you can send fl and white images, or send images with dramatically reduced colour detail (which is actually what NTSC television does).
		Bandwidth is important not only for it's own sake, but also for it's effect on overall latency.
	rescomp.stanford.edu /~cheshire/rants/Latency.html (5116 words)

	Networking for smarts: ZDNet Australia: Insight: Communications (Site not responding. Last check: 2007-10-09)
		Then there are compression devices -- these will allow you to compress data, which can accelerate your traffic and minimise your network bandwidth costs, as you will be transferring less data.
		During the first transmission a bandwidth compression device will significantly reduce data and after that it starts matching traffic patterns to even further reduce the size of the data.
		The Lightspeed Systems product, however, is a pure bandwidth management tool, however it arrived at the Labs too late for us to properly test and compare it to the other products.
	www.zdnet.com.au /insight/communications/print.htm?TYPE=story&AT=39193118-39023754t-10000103c (2598 words)

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