• State
  • Locked Locked
  • Replies 5 replies
  • Subscribers 98 subscribers
  • Views 250 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DM355 continuous mode with interlaced CCD

Lior
Prodigy 30 points

We are working with the DM355 frame by frame to get video info from an interlaced CCD.

We are looking into switching to continuous mode to reduce delay, and read in the Linux documentation that this configuration might be problematic.

Before we dive into trying to try and get continuous mode work we would like to know if it can be done  with interlaced CCD.

Any experience in using DM355 in continuous mode? And when using an interlaced sensor? 

Thanks,

Lior

  • 0
    TI__Intellectual 1870 points

    Could you provide more information about the application?

    1. Is it RGB Bayer CCD sensor? Or Complementary sensor?

    2. Does the application need Video encoding?

    3. If so, does it need Frame encoding? (I am not sure whether we support Field encoding though).

    4. What is the frame size and do you need 30fps (i.e. 60field/sec)?

     

    regards,

    Sang-Yong

     

  • 0 in reply to SANG-YONG
    Prodigy 30 points

    Complementary, no encoding needed, 60 fields/sec.

    Thanks!

  • 0 in reply to Lior
    TI__Intellectual 1870 points

    DM355 H/W ISP needs S/W library to support Complementary sensor. TI doesn't have the solution but there is a company to provide solution.

    We recommned using RGB Bayer sensor, but if you need, I can check about the external solution (it might not be free and it has some limitation on maximum frame size /rate).

     

    Regards,

    Sang-Yong

  • 0 in reply to SANG-YONG
    Prodigy 30 points

    We do the conversion externally, that's not a problem - the issue at hand is if we can operate in continuous mode with interlacing. 

     

    Thanks,

     

    Lior

  • 0 in reply to Lior
    TI__Intellectual 1870 points

    That is good.

    You can process Field data without storing Raw data into DDR and can display field data.

    But if you need frame output, then this method is not recommended as there is vertical (filter, CFA) processing in ISP (to maximize quality).

    So, it is ideal to store a frame data in memory and then process the frame.

     

    Regards,

    Sang-Yong