Validating media

Posted by / 11-Apr-2020 17:51

Validating media

You're browsing the Game FAQs Message Boards as a guest.Sign Up for free (or Log In if you already have an account) to be able to post messages, change how messages are displayed, and view media in posts.Thus, the word “media” may be used to refer to a single item (rather than using the word “medium”) and/or to multiple items.According to a second aspect of the present invention there is provided a method of validating deposited media items, the method comprising the steps of: conveying a received media item to an examination area extending across the media item; illuminating the media item by sequentially activating an ultra-violet radiation source, an infra-red radiation source, and three discrete primary colour sources, so that a portion of the media item in the examination area is illuminated by the ultra-violet radiation alone, by the infra-red radiation alone, and by the three primary colours alone; detecting emissions from the deposited media item at the examination area, where the emissions are caused by the illumination sources; collating the detected emissions according to the type of source used; and processing the collated emissions to validate the media item.Transmission information may be useful in detecting security features such as: threads, watermarks, registration marks, and such like.In some embodiments, the illuminating means may comprise radiation sources disposed on only one side of the media item so that only reflection information or only transmission information is captured.In a preferred embodiment, the radiation sources are light emitting diodes (LEDs).Each type of radiation source (for example, UV light, IR light, and such like) may comprise a plurality of source elements.

Preferably, the illuminating means is in the form of a plurality of sequentially activatable radiation sources.However, different types of media require different validation tests to be performed.These different tests involve different illumination sources, different image resolutions, and such like.For example, there may be six UV light elements, six IR light elements, four red light elements, four green light elements, and four blue light elements.In some embodiments, the illuminating means may comprise radiation sources disposed on opposing sides of a media item, so that reflection and transmission information may be captured.

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The three primary colour sources may be activated sequentially so that one colour source is activated at a time, for example, a red source may be activated, then a green source, then a blue source; alternatively, the three colour sources may be activated simultaneously (that is, the sources may be activated as if the three primary colour sources were a single source of white light) so that white light is produced.

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