Dynamsoft Driver

[Crisoforo Schuhmacher]

Pleasenote that Dynamsoft provides maintenance and support for every version of SDK for TWO years from their general availability date. Therefore, if you are using a very old version, we suggest you schedule an upgrade to the latest version. You can contact sa...@dynamsoft.com for any questions.

I use an unsupported version of Dynamic .NET TWAIN to capture images from a flatbed scanner (usually Canon LiDE). I have deployed onto Windows 10 64-bit many times without any issues but one deployment is throwing the following error when attempting to find available scanning devices:

I get the same error. Using up to date Dynamic .NET TWAIN drivers (8.3.3). Everything works when logged in as administrator, throws exception on starndard privileges. Any help would be much appreciated.

The DSSCN.exe file will need to be included in your build for the Dynamic .NET TWAIN application. Please find DSSCN.exe under C:\UsersUserName\AppData\Local\Temp\Dynamsoft\DynamicDotNetTwain and copy it to the DNT dll directory of your app.

If you are using a TWAIN library and your application is supposed to work with all TWAIN compatible devices, you can use Twacker, which is a TWAIN application developed by The TWAIN Working Group. It allows you to exercise features of a TWAIN driver and to see whether the driver of your device is working fine or not.

Test your scanner. Under File menu, check ShowUI to show the user interface of the device. With UI hidden, you can use the Automatic Feeding setting to test ADF scanning.

Troubleshoot. If you fail to acquire images from your scanner using Twacker, you can adjust the Message Level to see if you can get more information to pinpoint the cause of the issue. Under Special menu, you can also check the TWAIN State transition info.

You can also test your scanner using the online demo of Dynamic Web TWAIN, which is a browser-based TWAIN SDK. You only need to install a background service from your browser (Internet Explorer/Chrome/Firefox, Safari) and have a quick check for your scanner online.

We have a application which integrates a 3rd party scanning component - Dynam .NET TWAIN. It's working well with my HP scanjet 5700. Recently, we got Cannon LiDE210 but it doesn't work. I finally noticed that our application needs to work with TWAIN compatible drivers.

There is a handy tools called TWACKER...Make sure you run it as admin. Choose File->Select Source, and see if your scanner is listed there. If your scanner is listed, it means you are using a TWAIN driver, in which you can have a further scanning with different scanning settings to check your scanner's TWAIN compatibility. Otherwise, you need to find a TWAIN drvier for your scanner.

But before you contact Dynamsoft, you should check that you have the correct Canon TWAIN driver installed for your version of Windows, and that it can scan from your scanner.For some reason, Canon Asia has a better page on this driver than Canon USA: -asia.canon-asia.com/contents/ASIA/EN/0100294501.htmlI hope I don't need to say this: You should only download and install drivers from the scanner vendor's website(s)!

To verify that a TWAIN driver is working, I & my colleagues often scan from IrfanView - it's free, millions of copies in use, and has code that works with pretty much any TWAIN driver. If IrfanView can't scan from your scanner, the TWAIN drive either isn't installed or isn't working - at that point you should look to the scanner vendor for support, in this case, Canon.

PPS As you may have figured out by now (especially if you played with Twacker or Inspector Twain), "TWAIN Compatibility" isn't an all-or-nothing thing. Different scanners support different sets of TWAIN features, and nearly every TWAIN driver violates the TWAIN standard in SOME way. But don't get me started on that. ;-)

Users of earlier versions will be prompted to install the old scanner driver the next time they attempt to scan a document. The workaround is to scan the document outside of the practice management system and upload the scanned document manually.

An Eyefinity EHR administrator must initiate the scanner software update. Before initiating the update, you should notify your practice users that they may be prompted to download and install a small software package the next time they attempt to scan a document in Eyefinity EHR. If you work in a larger practice, coordinate with your IT team to schedule a deployment of the scanner software. Regardless of whether you're in a small practice or a large one, choose a time that is least disruptive to patient care.

Initiating the update cannot be undone. Follow the steps below only at the desired time. Once the update is initiated, practice users will be prompted to update the scanner software the first time they attempt to scan on each workstation.

Dynamsoft Barcode Reader JavaScript Edition (DBR-JS) is equipped with industry-leading algorithms for exceptional speed, accuracy and read rates in barcode reading. Using its well-designed API, you can turn your web page into a barcode scanner with just a few lines of code.

In some rare cases, you might not be able to access the CDN. If this happens, you can use -barcode-reader-js/dynamsoft-barcode-reader-js-9.6.42/dist/dbr.js for the test. However, please DO NOT use CDN of download2.dynamsoft.com in your production application because it is temporary. Instead, you can try hosting the SDK yourself.

license: This property specifies a license key. Note that the license "DLS2eyJvcmdhbml6YXRpb25JRCI6IjIwMDAwMSJ9" used in this example is an online license and requires network connection to work. Read more on Specify the license.

createInstance(): This method creates a BarcodeScanner object. This object can read barcodes directly from a video input with the help of its interactive UI (hidden by default) and the MediaDevices interface.

onFrameRead: This event is triggered every time the SDK finishes scanning a video frame. The results object contains all the barcode results that the SDK have found on this frame. In this example, we print the results to the browser console.

onUniqueRead: This event is triggered when the SDK finds a new barcode, which is not a duplicate among multiple frames. txt holds the barcode text value while result is an object that holds details of the barcode. In this example, an alert will be displayed for this new barcode.

You can run the example deployed to the Dynamsoft Demo Server or test it with JSFiddle code editor. You will be asked to allow access to your camera, after which the video will be displayed on the page. After that, you can point the camera at a barcode to read it.

To work properly, the SDK requires a few engine files, which are relatively large and may take quite a few seconds to download. We recommend that you set a longer cache time for these engine files, to maximize the performance of your web application.

If you register a Dynamsoft account and download the SDK from the official website, Dynamsoft will automatically generate a 30-day trial license for you, and put the license key into all the samples attached to the SDK.

You can use one of two classes ( BarcodeScanner and BarcodeReader ) to interact with the SDK. BarcodeReader is a low-level class that processes images directly. BarcodeScanner , on the other hand, inherits from BarcodeReader and provides high-level APIs and a built-in GUI to allow continuous barcode scanning on video frames. We'll focus on BarcodeScanner in this guide.

get/updateRuntimeSettings: Configures the decode engine with either a built-in template or a comprehensive RuntimeSettings object. For example, the following uses the built-in "speed" settings with updated localizationModes.

The video element will be created and appended to the DIV element with the class dce-video-container , make sure the class name is the same. Besides, the CSS property position of the DIV element must be either relative , absolute , fixed , or sticky .

If the class names of the created select elements match the default class names, i.e. dce-sel-camera and dce-sel-resolution respectively, the SDK will automatically populate the lists and handle the camera/resolution switching.

Generally, you need to provide a resolution that the camera supports. However, in case a camera does not support the specified resolution, it usually uses the closest supported resolution. As a result, the selected resolution may not be the actual resolution. In this case, add an option with the class name dce-opt-gotResolution (as shown above) and the SDK will automatically use it to show the actual resolution.

This API is only required for in-browser video streaming. If a browser does not support this API, the Single Frame Mode will be used automatically. If the API exists but doesn't work correctly, the Single Frame Mode can be used as an alternative way to access the camera.

Apart from the browsers, the operating systems may impose some limitations of their own that could restrict the use of the SDK. Browser compatibility ultimately depends on whether the browser on that particular operating system supports the features listed above.

The most i like in the Dynamsoft barcode reader sdk that it's easy to intergrat in the code and it can read the 2D Barcode(datamatrix) in different backgrounds (Color ) with a high level of accuracy wich make the sdk so usefull and powerfull , we shouldnt forget to mention the professionel service of the support .

We initially used the JavaScript solution in our PWA (progressive web app), which worked great. It allowed our web app to use a mobile device's camera to scan licenses & import all data into our systems. After initial setup, it worked flawlessly for our users, and was simple, intuitive and required zero training. Our web app has grown & morphed into an Ionic Hybrid app that is available in the iOS App Store & Google PlayStore. Although the initial javascript implementation still worked, we upgraded to the Capacitor version to gain additional controls over the device's camera functionality, such as using the flash's torch feature. This helped users to easily scan drivers licenses, even in low light situations.

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