8.4

Capturing and Archiving
After the printed documents have been inked with the Anoto Digital Pen, the PGCfiles from the pen must be
processed and merged with the appropriate documents in the PlanetPress Capture Database. Aworkflow
process that receives PGCfiles and reads them in turn consists of the following actions:
l An "HTTP Server Input" on page 176 task or "Folder Capture" on page 164 task that receives the
PGC.
l The "Capture Fields Processor" on page 369, which converts each PGCin an EPSlayer, adds this
layer to the PDFin the database, releases patterns and closes documents.
l Optionally, a "Capture Condition" on page 360 task to do post-processing using the Capture Fields
data.
l A"Get Capture Document" on page 383 action task to retrieve each document in the database and
output a PDFfile
l Any existing output such as Output to Folder, email, ftp, etc.
Technical
Because of timeout limitations, it is generally a good idea to use the "Send immediate response to
client"option of the HTTPServer Input task, especially when processing a large amount of
documents from the pen. Additionally, HTTPServer Processes should always be self-replicating and
have a short polling interval set in their properties.
Managing and Post-Processing
There are a couple of things that can be done even after documents have been inked. As long as a
document remains open, it is still present in the Capture database and be used in a process:
l The "Find Capture Documents" on page 378 input task is used to retrieve a list of documents under
specific criteria.
l
The Capture Condition and Get Capture Document tasks are used to effect post-processing and
retrieve document from the Capture database.
Error Handling
Whenever an error occurs during the Capture Field Processor phase, it is of course important to be able to
handles these errors. For this purpose, the "PGC to PDF Converter" on page 386 task was added with
PlanetPress 7.4, adding the ability to quickly and directly convert a PGCfile to a blank PDFfile containing