Versions TWAIN

TWAIN Version 2.2 - 16 févier 2012

Self-Certification and the white papers for Mandatory Features and
Capability Ordering are incorporated into the body of the TWAIN Specification
Data Sources advertise the DG / DAT operations they support
A single chapter defines the entire symbolic and numeric space for the TWAIN 2.2 Specification
Constraining a capability is now distinct from the ability to get, set and reset it's current value 
References the Sample Code for Applications and Data Sources
New definitions added for multiple color dropout, double document detection, negotiable image segments
greater control of warning and error dialogs from the data source, paper handling,
printing and the ability to detect both busy and locked data sources

TWAIN Version 2.1 - 28 octobre 2009

Supported on Windows 7 and 32 and 64-bit systems
Support for automatic color detection
Capabilities to help improve performance
Application can ID supported image info
Application can set default data source
Auto sizing Documents
Application can get localized strings from data source
Unique ID for data sources interface
Auto selection between feeder and flatbed

TWAIN Version 2.0 - 22 févier 2008

Supports Linux/Unix
Deprecates unused features
Check scanning support
Improved sample code
PDF/A support
Open source
64-bit
SDMI (single document multi images)

TWAIN Version 1.9 - 15 janvier 1999

ICC Color Profiles
Macintosh support for OS X

TWAIN Version 1.8 - 22 octobre 1998

Concentrates on mid/high volume scanners and digital cameras
Image Filesytem
Camera controls
Audio controls
Device events
Barcode and Patchcode control
Printer control
Image processing control
Language and Country coverage increased

TWAIN Version 1.7 - 19 août 1997

Custom Data Structure – Definition of Settings that can be Saved
Option to Set Scanner Settings at Scan Time (i.e. Not Saved)
Actual Image Size
Option for Saving User's Selected Scanning Settings (Source & Application)
Test to Ascertain if Source Supports Extended Information
Enable and Disable Thumbnails (Digital Camera)
Duplex Scanning
Set Counter for Endorser
Recognize Other Data like Barcodes, OCR, ICR, Patch Code

TWAIN 1.6 - 5 février 1996

Page length detection
Buffer Transfer

TWAIN 1.5 - mai 1993

Performance Enhancements

TWAIN 1.0 sortie initiale - février 1992