The device driver allows the computer user to specify colored, grayscale, or monochrome scanning modes depending on his preference. The Avision AV122 and its accompanying device driver are designed to implement both ISIS and TWAIN specifications for its scanning processes. Download Drivers, download Scanners, download Avision, wide range of software, drivers and games to download for free.
This section describes the generic WinUSB driver (Winusb.sys) and its user-mode component (Winusb.dll) provided by Microsoft for all USB devices.
In versions of Windows earlier than Windows XP with Service Pack 2 (SP2), all USB device drivers were required to operate in kernel mode. If you created a USB device for which the operating system did not have a native class driver, you had to write a kernel-mode device driver for your device.
Windows USB (WinUSB) is a generic driver for USB devices that was developed concurrently with the Windows Driver Frameworks (WDF) for Windows XP with SP2. The WinUSB architecture consists of a kernel-mode driver (Winusb.sys) and a user-mode dynamic link library (Winusb.dll) that exposes WinUSB functions. By using these functions, you can manage USB devices with user-mode software.
Winusb.sys is also a key part of the link between a UMDF function driver and the associated device. Winusb.sys is installed in the device's kernel-mode stack as an upper filter driver. An application communicates with the device's UMDF function driver to issue read, write, or device I/O control requests. The driver interacts with the framework, which passes the request to Winusb.sys. Winusb.sys then processes the request and passes it to the protocol drivers and ultimately to the device. Any response returns by the reverse path. Winusb.sys also serves as the device stack's Plug and Play and power owner.
Note WinUSB functions require Windows XP or later. You can use these functions in your C/C++ application to communicate with your USB device. Microsoft does not provide a managed API for WinUSB.
This section describes how to use WinUSB to communicate with your USB devices. The topics in this section provide guidelines about choosing the correct driver for your device, information about installing Winusb.sys as a USB device's function driver, and a detailed walkthrough with code examples that show how applications and USB devices communicate with each other.
This section includes the following topics:
Windows Support for WinUSB
The following table summarizes WinUSB support in different versions of Windows.
| Windows Version | WinUSB support |
|---|---|
| Windows 10 and later | Yes² |
| Windows 7 | Yes¹ |
| Windows Server 2008 | Yes² |
| Windows Vista | Yes² |
| Windows Server 2003 | No |
| Windows XP | Yes³ |
| Windows 2000 | No |
Note Yes¹: All SKUs of this version of Windows support WinUSB on x86-based, x64-based, and Itanium-based systems.
Yes²: All SKUs of this version of Windows support WinUSB on x86-based and x64-based systems.
Yes³: All client SKUs of Windows XP with SP2 service packs support WinUSB. WinUSB is not native to Windows XP; it must be installed with the WinUSB co-installer.
No: WinUSB is not supported in this version of Windows.
USB Features Supported by WinUSB
The following table shows the high-level USB features that are supported by WinUSB in different versions of Windows.
| Feature | Windows 8.1 and later | Windows 7/Vista/XP |
|---|---|---|
| Device I/O control requests | Supported | Supported |
| Isochronous transfers | Supported | Not Supported |
| Bulk, control, and interrupt transfers | Supported | Supported |
| Selective suspend | Supported | Supported |
| Remote wake | Supported | Supported |
Related topics
A Compact and Affordable Network Document Scanner
Combining 50-page auto document feeder with A4 flatbed scanning, the AV620N is an ideal choice for workgroups with a demanding work load and limited buget.
The slim flatbed design is made possible by CIS technology. With true 600 dpi optical resolution, the scanner is able to capture the finest detail. Operation of the AV620N is simple with Avision's exclusive software application, the Button Manager. Users only needs to properly place the document on the scanner, then press the Scan button. The scanning task can be finished within seconds. Best of all, the scanned image can be directly sent to your desirable destination applications.
The Avision AV620N
with Automatic Document Feeder/Flatbed is a compact and affordable productivity scanning solution delivering 25 pages per minute and 50 images per minute in 300 dpi resolution. The combination of high productivity and affordability makes this series the obvious choice for reducing the total cost of scanning.
Network scanning
AV620N with network interface can be shared by all users within a local area network. AV620N isimplemented with network port to be used as a network scanner.
Start auto scan without connecting to a computer
The AV620N is enhanced with the innovative feature to scan to USB flash drive. By inserting a USB flash drive into the USB flash drive port, the AV620N allows you to start automatic scan without connecting to a computer and save the scanned images to a USB flash drive in predefined settings. For example, by selecting “USB Disk” and “Document” or “Photo” on the control panel, the scanned image can be saved in 300 dpi, gray, A4 size, pdf file format or in 600 dpi, color, 5”x7”, and jpeg file format.
Best Usb Devices
A Large LCD display
The AV620C2+ is easy to use through the enhanced LCD display which allows 16*2 characters. By selecting “USB Disk”, the scan can be done automatically. By selecting “PC” and then your desired profile, the scan can be started and the scanned image can be linked to your desired destination application such as e-mail, printer, or image-editing software application. Up to nine frequently used scan settings and destinations can be preset for different scanning needs.
Avision Driver Download
Compact and earth-friendly design
The AV620N is compact and earth-friendly in design since it uses CIS (contact image sensor) technology which requires smaller space and the LED lamp as the light source. The LED lamps are lower power consumption and are designed to last for the life of the scanner, and their bright light renders true illumination to enable accurate color imaging.
User-Replaceable parts
With easy-to-change and easy-to-clean parts, ongoing routine maintenance can be handled by scanner users. This reduces the need for service calls and allows you to boost scanning efficiency.
Avision Usb Devices Driver Windows 7
Advanced settings via TWAIN driver
For advanced users who wish to control scan settings and obtain the best image quality, the Avision’s AV620N is able to scan through Avision’s advanced TWAIN user interface from TWAIN-compliant software application. Avision’s TWAIN user interface provides various useful features to enhance your image quality including auto crop and deskew, auto color detection, color matching, color dropout and so on.
Powerful bundled software applications
The Avision AV620N comes with TWAIN and ISIS drivers, and is bundled with a suite of powerful software applications that include Avision Button Manager, AvScan , and PaperPort 14SE. With Button Manager, you can scan to searchable PDF, JPEG, BMP, or GIF file format, save to folder on your computer, and scan to e-mail, printer, or other application with a press of a button. The AVScan and PaperPort are highly effective image processing and document management software that helps you streamline your task more efficiently.
Avision Scanner Install
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