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https://www.innovtech.tw/ Ruidatong Technology Co., Ltd
Ruidatong Technology Co., Ltd 11F, No. 324, Sec. 1, Wenxin Rd., Nantun Dist., Taichung, Taiwan
What Is a Document Camera and How It Works? A document camera is a device that can project and magnify images of objects, paper notes, and transparencies. It is described as being similar to an old overhead projector that almost every classroom consisted of in the past. However, a document camera is more modern, smaller, and can work remotely over Wi-Fi.Majority of users would classify document cameras as high-resolution webcams that have arms to ensure their placement over documents, objects, or papers. Teachers, professors, and world-wide educators find document cameras to be very useful because they can write notes on paper and then present the notes to the audience of students through the document camera.The document camera works by taking a picture of whatever object is placed underneath it and producing a live picture that multiple people can view at once. Depending on what type of document camera you purchase and how much you are able to spend, each has their own flexibility when it comes to placement of objects and forms.   Some document cameras allow two or three-dimensional objects to be placed in front of the camera, and others just focus on what is placed beneath them. Some classrooms have installed mounted document cameras from the ceilings to give the camera a bigger working area to project and magnify photos.   https://www.innovtech.tw/hot_450141.html WHAT IS A DOCUMENT CAMERA? 2024-01-18 2025-01-18
Ruidatong Technology Co., Ltd 11F, No. 324, Sec. 1, Wenxin Rd., Nantun Dist., Taichung, Taiwan https://www.innovtech.tw/hot_450141.html
Ruidatong Technology Co., Ltd 11F, No. 324, Sec. 1, Wenxin Rd., Nantun Dist., Taichung, Taiwan https://www.innovtech.tw/hot_450141.html
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Type of NAND Flash Memory

Industrial Grade uses SLC (Single Level Cell) NAND versus Commercial Grade MLC (Multi Level Cell) as the storage medium for data. SLC NAND has 20-30 times more endurance cycles than MLC NAND and has significantly better data retention life and functionality at extreme temperatures.

Firmware Algorithms

Industrial Grade products have sophisticated Wear Leveling, Defect Management and Error Checking & Correction (ECC), along with many trade secret techniques developed to deliver reliability across a wide range of applications and environments. Commercial Grade firmware, with its shorter life cycles, is developed to with time to market and cost as its primary goals.

Product Life Cycles

Industrial Grade products exist for >10 years in many cases with as few as 2 Product Change Notifications during that time. The Commercial Grade products typically have lives of 12-18 months.

Supported Temperature Ranges

Industrial Grade products have off the shelf extended temperature ratings of -45C to 90C. In addition, they can be screen tested to much higher and lower temperatures. Commercial Grade products are typically rated at only 0C to 70C or in many cases not rated. We have been able to screen test some Commercial Grade devices to wider temp ranges, but Industrial Grade is by far more reliable at temperature.

Cost

The Commercial Grade offerings are significantly lower priced than the Industrial Grade products. In many cases they are several times less expensive than an equal capacity Industrial Grade offering. This is the main reason OEMs consider use of the lesser reliability MLC NAND devices.