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Nagaraju's avatar
Nagaraju
Icon for New Contributor rankNew Contributor
2 years ago

HDCP in "HDMI Intel FPGA user guide"

I haven't found any details in document "HDMI Intel FPGA user guide" about how HDCP encrypts and decrypts the video . I do have few questions below which needs to be addressed.

Question: As hdcp cipher(see hdcp v2.3 spec(HDMI)) encrypts/decrypts five pixel at a time, there could be a problem when partial pixels(less than 5 pixels, for example 3 pixels) left and when vsync asserts after few clock cycles. This can pause feeding the available 3 pixels to hdcp cipher till vsync asserts. How this situation is handled?

Video

3 Replies

  • Wincent_Altera's avatar
    Wincent_Altera
    Icon for Regular Contributor rankRegular Contributor
    2 years ago

    Hi ,


    May I know is there any specific FPGA device you are looking at ?

    For Arria 10, you may found the information under https://www.intel.com/content/www/us/en/docs/programmable/683156/24-1-19-7-3/hdcp-over-hdmi-design-example-architecture.html


    For detailed information about the HDCP over HDMI design examples, refer to the Intel® Arria® 10 and Intel® Stratix® 10 design example user guides.

    Note: The HDCP feature is not included in the Intel® Quartus® Prime Pro Edition software. To access the HDCP feature, contact Intel at https://www.intel.com/content/www/us/en/broadcast/products/programmable/applications/connectivity-solutions.html.


    Let me know if that answered your question.


    Regards,

    Wincent_Altera


  • Wincent_Altera's avatar
    Wincent_Altera
    Icon for Regular Contributor rankRegular Contributor
    2 years ago

    Hi,

    I wish to follow up with you about this case.

    Do you have any further questions on this matter ?

    ​​​​​​​Else I would like to have your permission to close this forum ticket. Nevertheless, you can still response to the forum and I will be available to assist you.

    Regards,

    Wincent_Altera

    p/s: If any answer from the community or Altera Support is helpful, please feel free to give the best answer or rate 9/10 survey.


  • Wincent_Altera's avatar
    Wincent_Altera
    Icon for Regular Contributor rankRegular Contributor
    2 years ago

    Hi

    We have not hear from you and this Case is idling. It is not recommended to idle for a week.

    Therefore following our support policy, I have to put this case in close status. My apologies if any inconvenience cause

    Hence, This thread will be transitioned to community support.

    If you have a new question, feel free to open a new thread to get support from Altera experts.

    Otherwise, the community users will continue to help you on this thread. Thank you

    If your support experience falls below a 9 out of 10, I kindly request the opportunity to rectify it before concluding our interaction. If the issue cannot be resolved, please inform me via this forum page of the cause so that I can learn from it and strive to enhance the quality of future service experiences.

    Regards,

    Wincent_Altera

    p/s: If any answer from the community or Altera Support is helpful, please feel free to give the best answer or rate 9/10 survey.