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What is the .NAPLPS File Extension?

.NAPLPS File Extension Description:

Using NAPLPS, short for North American Presentation Level Protocol Syntax, in order to transfer ASCII-based graphical data to remote terminals is done through a communications channel such as computer networks, modems, telephone systems, etc.

NAPLPS was originally designed as an information transfer protocol rather than as a file format. But because its data are often written to disk and saved as files with the .naplps file extension, the actual NAPLPS file format was stabilized and later became the basis for graphics system of other microcomputers.

The NAPLPS file extension is commonly used by Videotext, Teletext, and Prodigy services to provide transmission of text and picture information even at low data transfer baud rate of 2400. The files with the .naplps file extension are sent as streams of either 7-bit or 8-bit ASCII characters providing maximum compatibility with all ASCII-based platforms, network software, and network hardware. These files are transferred in alpha geometric data instead of bitmap images. Alpha Geometric is defined as transferring of the text in the image files as character code and geometric figures. Thus, more image files can be transferred even when the transfer speed is low.

While in the process of data transfer, NAPLPS graphics can even be drawn. This is because image files with the .naplps file extension are realized as data being received progressively. By applying this capability to data, the latest information can be displayed at all times by transferring the data in the NAPLPS format.

The file with the .naplps file extension is defined as line, box, circle, arc, polyline, polygon, spline, bitmaps, and fonts, both in palette and 24-bit color. Its coordinate model is right-handed Cartesian, meaning that the X/Y coordinates increase toward the upper-right of the screen.

Different NAPLPS applications are used with the NAPLPS file extension such as:

* NAPLPS Data Converter - Used in converting additional data formats to NAPLPS.

* NAPLPS Viewer Plugin - Used in decoding NAPLPS data.

* NAPLPS Viewer Library - Used in viewing NAPLPS data.

The NAPLPS file extension is formally defined in standard documents available from the ISO (International Standards Organization), the ANSI (American National Standards Institute), and the CSA (Canadian Standards Association).

Author: ANSI
Author URL:
Related Applications: Videotext, Teletext, Prodigy
Common Path: N/A


Run a Free Scan to check for NAPLPS related errors & to optimize PC performance.

Do you have errors with .NAPLPS files?

The General Reason for .NAPLPS files Errors:

.NAPLPS files errors are potential critical Windows file system errors and are caused by a corrupted registry that needs to be fixed at once to protect against even further failure in other software and/or hardware. Receiving these errors places your personal computer in danger for fatal crashes, blue screen errors and even hardware failure.

Symptoms of .NAPLPS files Errors:

Typical symptoms with .NAPLPS files errors include reduced system speed, extended software start up times, trouble loading files, excessive suspensions in software procedures, programs exits without an indication of error, input halts and programs lock up.

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Repair .NAPLPS File Errors    |    What is the .NAPLPS File Extension?    |    How to Fix .NAPLPS File Extension Errors