NAPLPS (North American Presentation Level Protocol Syntax) is a graphics language for use originally with videotex services.
In the 1980sNAPLPS' basic geometry and command structure became the basis for the library-based GKS microcomputer standard, which was later implemented in Digital Research's GSX graphics system and later used in their GEMGUI.
Some videotex fans claim that NAPLPS was used as the basis for the SVG standard for vector graphics on the Web.
en.wikipedia.org /wiki/NAPLPS (915 words)
naplps(Site not responding. Last check: 2007-10-19)
As with all to many standards written by governments or more than one company, the original simplicity of NAPLPS was drowned in a huge document describing many issues that could safely be ignored.
Various systems using NAPLPS appeared in the early 1980s, but it soon became clear that there was no way to make money on a read-only service (a fact many in the web discovered again 20 years later).
More recently NAPLPS was used as the basis for the SVG standard for vector graphics on the web, proving that all that is old is new again.
www.yourencyclopedia.net /NAPLPS.html (591 words)
NAPLPS: Summary from the Encyclopedia of Graphics File Formats(Site not responding. Last check: 2007-10-19)
Although not strictly a file format, NAPLPS is likely to become the basis of one, because it is in wide use in a rapidly growing segment of the computer communications industry.
NAPLPS is used by a number of Videotex services, is supported by special NAPLPS terminals, and is used by Prodigy, a well-known commercial online service.
NAPLPS is formally defined in standards documents available for purchase from the International Standards Organization (ISO), the American National Standards Institute (ANSI), and the Canadian Standards Association (CSA).
Hughes' whimsical eloquence sugarcoats the technobabble needed to explain that NAPLPS (North American Presentation Level Protocol Syntax) is a form of computer code that can wrap pictures and words together in extraordinarily small digital packets to be transmitted by telephone to computer screens on the other end of the world or down the block.
NAPLPS is as simple and ingenious a next step as smoke signals and the tom tom.
Using NAPLPS and telecommunications to extend the reach of their ancient stories and images wasn't much of a leap at all for people accustomed to hearing their grandparents' voices when they look up at the stars.
The PDI is based on the NAPLPS which is the videotex system used in the North America and used to describe the pattern by using geometrical elements and coordinate points.
The NAPLPS system uses an alphanumeric as the character and the pattern is fundamentally expressed by using the afore-mentioned PDI and according to the "geometric system" shown in FIG.
In the NAPLPS system, the transmission rate of the down-link is selected as 1200 bits/second and the transmission rate of the up-link is 150 bits/second.
[No title](Site not responding. Last check: 2007-10-19)
NAPLPS (North American Presentation Layer Protocol Syntax) is used to transmit device-independent vector and raster graphics.
Due to their spatial and color coordinate schemes, these graphics, sometimes referred to as "frames", are executable by virtually any device.
Required parameters: version identification For example: image/naplps; version=1983 Optional parameters: none Encoding considerations: As NAPLPS is based on an extensible "character set" scheme which includes completely interchangeable 7-bit and 8-bit options, NAPLPS graphics may contain data in either 7-bit or 8-bit format.
Based partially on the enthusiasm that some bulletin board operators are at last showing for NAPLPS, Hughes is confident that the standard will gain widespread acceptance in 1993.
Mike Liebhold, a senior scientist in media architecture research at Apple Computer, endorses Hughes's notion that low-cost software is essential to provide schools, libraries, and communities with access to telecommunications services, but he considers NAPLPS too dated to accommodate the video and sound uses of telecommunications that he believes are coming soon.
NAPLPS, on the other hand, works on virtually all computers in use today.
The articles presented a large amount of detail about how NAPLPS works and how it may be used; the series of articles continued in the March, April, and May 1983 issues of BYTE.
NAPLPS, pronounced like "nap-lips", fits in at approximately level 6 of the OSI (Open Systems Interconnection) reference model, but it bears only slight resemblance to the ASN.1 (Abstract Syntax Notation 1) and BER (Basic Encoding Rules) that constitute the official OSI level 6.
NAPLPS defines a methodology of representing graphics primitives within a 7- or 8-bit code set built around the model of ASCII.
The BBS Documentary Library(Site not responding. Last check: 2007-10-19)
NAPLPS (North American Presentation Layer Protocol Syntax) was a standard developed to allow the easy transmission of graphics and text information over modems.
"NAPLPS (North American Presentation Layer Protocol Syntax) is a communications protocol that extends ASCII to allow for the EFFICIENT transmission of picture and text information over telecommunications channels such as modems.
There are NAPLPS terminal programs available for Amiga, Macintosh and PC's with CGA, Herc monochrome, EGA, VGA and other display resolutions.
[No title](Site not responding. Last check: 2007-10-19)
In my opinion, a major handicap for NAPLPS was that for a long time the only equipment available for encoding the images was a special computer sold in the United States only by AT&T, costing tens of thousands of dollars.
I suppose that somebody could adapt NAPLPS as an alternate to ASN.1/BER for certain applications, but the effort to make it mesh with the other OSI layers would be nontrivial.
NAPLPS - North American Presentation Layer Protocol Syntax(Site not responding. Last check: 2007-10-19)
NAPLPS is used by many Videotext services, Prodigy, the commercial on-line information service, and in standalone information kiosk systems.
Although there is no NAPLPS file format, NAPLPS data streams are often saved as files, and the files are then referred to as using the "NAPLPS file format".
Michael Dillon has authored a paper on NAPLPS and started a NAPLPS section on SIMTEL20, which may be access via the mirror site: ftp://oak.oakland.edu/pub/simtel/msdos/ Michael Dillon may be contacted at: CompuServe: 71532,137 Internet: mpdillon@halcyon.halcyon.com BBS: 604.546.2705 The BBS also contains NAPLPS Shareware and art.
jNAPLPS - Java NAPLPS Decoder(Site not responding. Last check: 2007-10-19)
Java NAPLPS is a Java package for decoding and displaying NAPLPS graphics.
NAPLPS is North American Presentation Level Protocol Syntax, a code for transmission of (originally videotext) images consisting of text, vector and raster graphics.
This package was developed initially to be part of a client for a conferencing system, CoSy, that can include NAPLPS graphics within its text messages.
SVG and NAPLPS (ANSI X3.110) from Jim Fleming on 1999-03-07 (www-svg@w3.org from March 1999)
Is SVG designed such that a lower level NAPLPS (ANSI X3.110) engine can be used to do the rendering ?
Since NAPLPS has a compact binary encoding form, a thin-client on a low bandwidth connection might be able to handle the rendering while another upstream machine handles the SVG to NAPLPS conversion.
Newsbytes News Network: Malaysia online system to run NAPLPS - Modular Computer Systems wins contract from Information ...(Site not responding. Last check: 2007-10-19)
It will run Betix software from France under the Realix operating system, a version of Unix designed for videotex.
Set 1 of the Prestel standard is text, while some of sets 2 or 3 have graphics.
The system is capable of NAPLPS, and eventually the system will have international nodes and be able to access remote international databases over those standards." INC will handle all relations with information providers, he adds.
PCMag.com Shareware Library: Graphics NAPLPS drawing program
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