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ADV7626 for logo insertion

Question asked by Khader on Apr 24, 2017
Latest reply on Apr 28, 2017 by JeyasudhaMuthuPerumal

Hi,

 

We have some queries related to usability of ADV7626 in our design. We plan to use ADV7626 for logo insertion (in other words overlay of some logo or bitmap image) on the incoming HDMI stream (1080p max). Here are some of our queries and request if you could help us understand the device better.

 

1. We understand that the logo to be inserted on the HDMI_RX_A will be stored in the external SPI memory. What is the max size of image that can be stored and read over the SPI Flash?

2. How can the offset of logo be mentioned to ADV7626 device for the overlay image to be inserted?

3. There are 2 inputs HDMI_RX_A, HDMI_RX_B, can different logos be sent for each of them or it has to be a common image that can be inserted on A and B streams?

4. Is it possible to achieve transparency (0 - 100%) of the image to be overlayed on the original input stream?

 

If you have any other recommendation of device which can perform logo insertion or overlay on input HDMI stream, please feel free to suggest.

 

Regards,

Khader Shareef

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