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Method and device for providing controlled access video signals without providing a signal in the clear

Image Number 12 for United States Patent #6226384.

A display device for receiving encrypted or scramble video data and for decrypting or descrambling the video data such that a signal is not provided "in the clear". The video data is stored in a memory array in an encrypted form and read out from the memory array using a decryption key. The encrypted data is then read out from the memory elements in accordance with known methods.

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