Driver Wia Is200erscg1a
Windows Image Acquisition (WIA; sometimes also called Windows Imaging Architecture) is a proprietary Microsoft driver model and application programming interface (API) for Microsoft Windows ME and later Windows operating systems that enables graphics software to communicate with imaging hardware such as scanners, digital cameras, and digital video equipment. It was first introduced in 2000 as part of Windows ME, and continues to be the standard imaging device and API model through successive Windows versions. It is implemented as an on-demand service in Windows XP and later Windows operating systems.[1]
Overview[edit]
The Best Free Scanner Drivers app downloads for Windows: HP Scan and Capture Hewlett-Packard ScanJet 3400C Dazzle DVC 80 (2) HP Scanjet 3800 CanoScan. WIA Driver is the driver software for USB connections to Windows Me and Windows XP only. When you connect the camera to the computer with a USB cable, the Scanners and Cameras Wizard will open automatically to assist with downloading. For Windows 10, I believe you want a WIA driver. WIA uses a Microsoft driver, instead of the HP Scan software. NOTE: The WIA driver does not support duplex scanning or.pdf formats. To scan, do one of the following: To view the WIA drivers, open the Device Manager.
WIA is a very significant superset of the support for digital still imaging drivers that was provided by the Still Image Architecture (STI) in Windows 98. Whereas STI only provided a low-level interface for doing basic transfers of data to and from the device (as well as the invocation of an image scan process on the Windows machine through the external device), WIA provides a framework through which a device can present its unique capabilities to the operating system, and applications can invoke those features.According to Microsoft, WIA drivers are made up of a user interface (UI) component and a driver core component, loaded into two different process spaces: UI in the application space and the driver core in the WIA service space.
Certain scanners support WIA.[2][3]
Additional information[edit]
In 2002, Microsoft released the Windows Image Acquisition Automation Library Tool, which provides access to WIA functionality through programming languages and scripting environments that support OLE Automation.
In Windows XP, WIA runs in the LocalSystem context. Because of the security ramifications of running a service as LocalSystem whereby a buggy driver or malicious person would have unrestricted access to the system, the WIA service in Windows Server 2003 and Windows Vista operates in the LocalService context. This can result in compatibility issues when using a driver designed for Windows XP.[4]
Driver Wia Is200erscg1a Program
In Windows XP, support was added for automatic document feeder scanners, scroll-feed scanners without preview capabilities and multi-page TIFF generation.[5] For WIA video, a snapshot filter driver is introduced that allows still frames to be captured from the video stream.
Windows Vista introduced Windows Image Acquisition 2.0. Windows Vista also has the WIA Automation library built-in. WIA2 supports push scanning and multi-image scanning. Push scanning allows initiating scans and adjusting scanning parameters directly from the scanner control panel. Multi-image scanning allows one to scan several images at once and save them directly as separate files. However, video content support is removed from WIA for Windows Vista.[6]
Applications that use WIA[edit]
- ScanSnap Home
- ScanSnap Manager
- Windows Scanner and Camera Wizard
- Serif PhotoPlus
See also[edit]
References[edit]
- ^'Windows Image Acquisition (WIA)'. MSDN Library. msdn.microsoft.com. Retrieved 14 January 2013.
- ^List of Scanners That Are Supported by Windows Image Acquisition for Windows XP
- ^List of Digital Cameras That Are Supported by Windows Image Acquisition
- ^Microsoft published a paper in 2003 titled Security-related Best Practices for WIA Driver Development to assist WIA driver developers in writing drivers that will work in the lower-security context that the WIA service operates in.
- ^Still Image Connectivity for Windows
- ^Migrating from WIA to WPD
External links[edit]
- Still Image Connectivity for Windows—describes WIA and compares it to Picture Transfer Protocol and USB mass storage methods for transferring images between a digital imaging devices and the computer.
- Sample code creating a WIA utility class on codeproject.com
- Try the HP Print and Scan Doctor for Windows—HP Support
WIA is implemented as a Component Object Model (COM) out-of-process server to ensure the robust operation of client applications.
WIA has three main components: the WIA service, the WIA driver service library, and a vendor user-mode driver.
The WIA service enumerates imaging devices, retrieves device properties, sets up events for devices, and creates device objects.
The WIA driver service library implements all services that are device independent.
The vendor user-mode driver maps WIA properties and commands to the specific device. There are two types of WIA vendor user-mode drivers:
Minidriver: This is the most common type of vendor driver. It is a COM object that implements the WIA minidriver interfaces. A vendor can take advantage of all the WIA capabilities and features with this type of driver.
Microdriver: This driver is much more limited than a minidriver and, therefore, simpler to develop. It is used primarily for basic scanner devices. This driver is not a COM object; it is a DLL that exports a few functions. Microdrivers cannot be used for camera devices.
The following diagram illustrates the WIA architecture.
Imaging Applications
Imaging applications do not communicate directly with the minidriver, but communicate with the WIA service through the WIA application programming interface (API) to access images and acquire data from WIA devices. These applications can use a common, system-supplied user interface or a vendor-supplied user interface. For more information about the WIA API for imaging applications, see the Microsoft Windows SDK documentation.
WIA Service
The WIA service is a system-supplied component that communicates with imaging applications and WIA minidrivers. The WIA service executes in a separate process from applications and in the same process as WIA minidrivers. Applications direct their device requests to the WIA service, which in turn directs the requests to the appropriate minidriver through the WIA device driver interface (DDI).
WIA Driver Services Library
The WIA driver services library is a system-supplied component that provides helper functions for WIA minidrivers. A minidriver can call helper functions to perform tasks such as the following:
Initialize the WIA driver item tree.
Read, write, and validate device properties.
Transfer data.
Alternatively, a minidriver can perform such tasks itself. By taking advantage of the helper functions, you can reduce development time and the size of a WIA minidriver while still having the flexibility to develop individual solutions.
WIA User-Mode Minidrivers
WIA minidrivers are vendor-supplied, user-mode components that direct WIA property changes and commands to an imaging device. A minidriver implements the WIA DDI, which is called by the WIA service to communicate with the minidriver.
A WIA minidriver implements the standard WIA minidriver interfaces. The minidriver communicates with the imaging device through a standard Microsoft Windows kernel-mode driver, such as the USB driver. The minidriver communicates with the kernel-mode driver by calling the CreateFile, ReadFile, WriteFile, and DeviceIoControl Win32 functions (described in the Microsoft Windows SDK documentation).
An imaging application cannot make direct calls to the WIA minidriver. Only the WIA service is permitted to call the driver directly.
Kernel I/O Drivers
Kernel-mode still image drivers are system-supplied or IHV-supplied components that deliver data to or from the still image device. A kernel-mode still image driver is bus-specific.
Microsoft provides WDM-based, kernel-mode still image drivers for the USB, SCSI, and IEEE 1394 buses. See Accessing Kernel-Mode Drivers for Still Image Devices for more information.
A vendor must provide a kernel-mode still image driver only if its imaging device is incompatible with Microsoft-supplied, kernel-mode I/O drivers.