Setup and Install

Table 2-3 DSS-enabled devices – Technical Detail
Technical detail
List of supported devices: See
Supported devices – Legacy device support on page 5
Minimum firmware version: See
Table 3-3 DSS 4.91 supported device firmware revisions
on page 45
Feature matrix: See
Table 1-1 Feature comparison on page 7.
I.R.I.S. OCR engine
DSS uses I.R.I.S. OCR engine version 12 to provide Optical Character Recognition (OCR) and High
Compression PDF functionality. The engine features Intelligent High Quality Compression (iHQC)
technology™.
Figure 2-4 OCR engine
The figure above shows how the process flow OCR processing in DSS. When DSS receives a job
where OCR processing is required it invokes the I.R.I.S. OCR engine using COM (Component Object
Model). The image data/document is transferred together with control parameters, such as the
required output file type. Once OCR processing is completed the searchable document is passed
back to DSS which delivers the document to the destination.
DSS is a multi-threaded application and will launch multiple instances of the OCR engine when there
are multiple jobs in the queue that require OCR processing. We refer to this as ‘parallel processing of
OCR jobs’. This makes the OCR feature scalable, which means that average job processing times
will be improved if the server’s resources are improved. For instance, adding additional CPUs and
more memory to the server will improve the average processing time of each OCR job when the
server is processing multiple jobs simultaneously. This is a significant improvement over previous
versions of DSS, where OCR processing was serial.
ENWW
Components
17