pdf417 online

You can check PDF417-SDK functionality on our web-site. You can make decoding PDF417 and encoding PDF417 online, receive the information about PDF417.

Using PDF417-SDK will assist you in creation of your own application based on the Java technologies (desktop, client-server, Web applications) needed for solution of problems of 2-D bar coding. High-performance algorithms allow decoding of bar codes with high level of shadowing, irregularly lighted, with the non-uniform background and distortions. High speed of decoding enables the batch processing of bar codes. The quality of processing the bar codes images allows utilizing inexpensive equipment (simple scanners, web or photo cameras).

We offer you: purchasing PDF417-SDK introducing PDF417-SDK into your software complex adapting PDF417-SDK for your equipment and platform

PDF417 is a 2-dimensional barcode used in a variety of applications, including Transport, Identification cards, and Inventory management. It is best suited for cases where information needs to move with an item or document. PDF stands for Portable Data File. The PDF417 format was developed by Symbol Technologies.

Features More storage of data than linear (1-dimensional) barcodes. PDF417 barcodes can store up to 2710 characters. Error correction. The PDF417 code can detect and correct erasures, smudges, misprints and other errors, with a configurable amount of redundancy. Data compaction. Several schemes are defined for representation of certain types of data in a smaller space. Fast reading. It is not significantly slower than reading a linear barcode. Linking. PDF417 symbols can link to other symbols which are scanned in sequence allowing even more data to be stored. Cross-row scanning. This means that a barcode scanner doesn't need to read the symbol in an exactly horizontal pattern. Bi-directionally decodable. The symbols can be scanned from either the top or the bottom equally easily. User-specified dimensions. The user can decide how wide the narrowest vertical bar (X dimension) is, and how tall the rows are (Y dimension). Public domain format. Anyone can implement systems using this format without any license.

Format The PDF417 barcode (also called a symbol) consists of 3 to 90 rows, each of which is like a small linear barcode. Each row has: a quiet zone. This is a mandated minimum amount of white space before the barcode begins. a start pattern which identifies the type of symbol as PDF417. Every type of bar code symbology has a unique start and stop pattern. a "row left" codeword containing information about the row (such as row number and what error correction rate the row is using) 1 - 30 data codewords: codewords are a group of bars and spaces representing one or more numbers, letters, or other symbols. All rows have the same number of codewords. Every codeword contains four bars and four spaces (where the 4 in the name comes from). The total width of a codeword is 17 times the width of the narrowest allowed vertical bar (the X dimension). This is where the 17 in the name comes from. Each codeword starts with a bar and ends with a space. There are 929 codewords to choose from, 900 for data, and 29 for special functions. a "row right" codeword with more information about the row. a stop pattern. a quiet zone.