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  2. QR code - Wikipedia

    en.wikipedia.org/wiki/QR_code

    The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. [5] [6] [7] The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; [8] the pattern of position detection was found and determined by applying the least-used ratio (1:1:3 ...

  3. What you need to know about QR code scams and how to ... - AOL

    www.aol.com/know-qr-code-scams-stay-204500807.html

    Just like attachments and links, QR codes can be questionable. AI-based image recognition software may be able to help detect corrupt QR codes, and hopefully security will catch up to scammers ...

  4. High Capacity Color Barcode - Wikipedia

    en.wikipedia.org/wiki/High_Capacity_Color_Barcode

    High Capacity Color Barcode ( HCCB) is a technology developed by Microsoft for encoding data in a 2D "barcode" using clusters of colored triangles instead of the square pixels conventionally associated with 2D barcodes or QR codes. [1] Data density is increased by using a palette of 4 or 8 colors for the triangles, although HCCB also permits ...

  5. QR decomposition - Wikipedia

    en.wikipedia.org/wiki/QR_decomposition

    QR decomposition. In linear algebra, a QR decomposition, also known as a QR factorization or QU factorization, is a decomposition of a matrix A into a product A = QR of an orthonormal matrix Q and an upper triangular matrix R. QR decomposition is often used to solve the linear least squares (LLS) problem and is the basis for a particular ...

  6. Teleconverter - Wikipedia

    en.wikipedia.org/wiki/Teleconverter

    A teleconverter (sometimes called tele extender) is a secondary lens mounted between a camera and a photographic lens which enlarges the central part of an image obtained by the lens. For example, a 2× teleconverter for a 35 mm camera enlarges the central 12×18 mm part of an image to the size of 24×36 mm in the standard 35 mm film format .

  7. Fiber media converter - Wikipedia

    en.wikipedia.org/wiki/Fiber_media_converter

    Fiber media converter. A fiber media converter is a simple networking device that makes it possible to connect two dissimilar media types such as twisted pair with fiber optic cabling. They were introduced to the industry in the 1990s, and are important in interconnecting fiber optic cabling-based systems with existing copper-based structured ...

  8. AN/AAR-47 Missile Approach Warning System - Wikipedia

    en.wikipedia.org/wiki/AN/AAR-47_Missile_Approach...

    There is one optical sensor converter for each side of the aircraft. They have an infrared camera for detecting incoming missiles. The Optical modules since version AAR-47(V)2 include a laser warning sensor, and versions since AAR-47A(V)2 further incorporate an ultraviolet sensor for improved dynamic blanking laser warning detection.

  9. ElecLink - Wikipedia

    en.wikipedia.org/wiki/ElecLink

    The 51-kilometre (32-mile) DC cable runs via the Channel Tunnel between HVDC converter stations at Peuplingues in France and Folkestone in the UK, with an additional 14.5 km (9.0 mi) of underground AC cable on the English side to Sellindge substation, and 3.5 km (2.2 mi) on the French side to Les Mandarins substation, to link the converter stations to the existing transmission networks.

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