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  2. Video camera tube - Wikipedia

    en.wikipedia.org/wiki/Video_camera_tube

    Vidicon tube 2 ⁄ 3 inch (17 mm) in diameter A display of numerous video camera tubes from the 1930s and 1940s, photographed in 1954, with iconoscope inventor Vladimir K. Zworykin. Video camera tubes are devices based on the cathode-ray tube that were used in television cameras to capture television images, prior to the introduction of charge ...

  3. Videocon Group - Wikipedia

    en.wikipedia.org/wiki/Videocon_Group

    It was the third largest picture tube manufacturer in the world [4] valued at US$ 5.5 billion. [5] The company stopped trading and entered corporate insolvency proceeding in June 2018. In June 2021, NCLT approved Vedanta Group's bid to take over Videocon, paving the way for the new ownership. [6]

  4. Product key - Wikipedia

    en.wikipedia.org/wiki/Product_key

    Product key on a Proof of License Certificate of Authenticity for Windows Vista Home Premium. A product key, also known as a software key, serial key or activation key, is a specific software-based key for a computer program. It certifies that the copy of the program is original. Product keys consist of a series of numbers and/or letters.

  5. Professional video camera - Wikipedia

    en.wikipedia.org/wiki/Professional_video_camera

    1936 saw the arrival of RCA's iconoscope camera. 1946 RCA's TK-10 studio camera used a 3" IO – Image Orthicon tube with a 4 lens turret. The RCA TK-30 (1946) was widely used as a field camera. A TK-30 is simply a TK-10 with a portable camera control unit. The 1948 Dumont Marconi MK IV was an Image Orthicon camera.

  6. List of PDF software - Wikipedia

    en.wikipedia.org/wiki/List_of_PDF_software

    A PDF creator and virtual PDF printer for Microsoft Windows PDF-XChange: Proprietary: Yes: PDF Tools allows creation of PDFs from many types of source input (images, scans, etc.). The PDF-XChange print driver allows printing directly to a PDF. A "lite" version of the print driver is free for non-commercial (home and academic) use. PrimoPDF ...

  7. Four-tube television camera - Wikipedia

    en.wikipedia.org/wiki/Four-tube_television_camera

    The aims of the designers of the camera were, firstly, to produce a camera that was more tolerant to mis-registration and, secondly, to achieve a lighter camera by using smaller vidicon tubes to replace some of the large heavy IO tubes. The camera had an image orthicon tube for the luminance channel and three vidicon tubes for the colour ...

  8. Thermography - Wikipedia

    en.wikipedia.org/wiki/Thermography

    By using video camera tubes such as vidicons with a pyroelectric material such as triglycine sulfate (TGS) as their targets, a vidicon sensitive over a broad portion of the infrared spectrum [56] is possible. This technology was a precursor to modern microbolometer technology, and mainly used in firefighting thermal cameras.

  9. Product activation - Wikipedia

    en.wikipedia.org/wiki/Product_activation

    A product key is required to proceed and use Windows 95. In one form, product activation refers to a method invented by Ric Richardson and patented (U.S. patent 5,490,216) by Uniloc where a software application hashes hardware serial numbers and an ID number specific to the product's license (a product key) to