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SECURITY CENTRAL PROCESSING UNIT MANAGEMENT OF A TRANSCODER PIPELINE

  • US 20140053001A1
  • Filed: 12/06/2012
  • Published: 02/20/2014
  • Est. Priority Date: 08/17/2012
  • Status: Active Grant
First Claim
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1. A system for managing a transcoder pipeline, comprising:

  • a transcoder including a transcoder stage to generate a transcoded stream from a decrypted incoming media stream;

    a decryptor connected with the transcoder, the decryptor configured to decrypt a media stream with a decryption key and send the decrypted incoming media stream to the transcoder;

    a memory connected with the transcoder, the memory including a numbered region to store data from the transcoded stream;

    an encryptor connected with the memory, the encryptor configured to encrypt the transcoded stream retrieved from the memory with an encryption key before transmission to a media device, the encryption key corresponding to the decryption key; and

    a security central processing unit (SCPU) connected with the encryptor, decryptor, memory and transcoder, the SCPU configured to atomically load the decryption key, the encryption key and the numbered region of the memory into a slot of a key table, to ensure that when the decryption key is used by the decryptor, the corresponding encryption key is used by the encryptor to encrypt the transcoded stream retrieved from the numbered region of the memory.

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