• State
  • Locked Locked
  • Replies 7 replies
  • Subscribers 98 subscribers
  • Views 164 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.

I need help choosing a processor

Amer Abufadel
Intellectual 470 points
Other Parts Discussed in Thread: DM3730, OMAP3530

Hello all,

  I need help choosing a processor for my application.  

The project is a low power and portable video recorder that would run on a rechargeable battery and save video on an SD card.  It has a camera and a microphone. That's it.  Very straight forward.  Unfortunately, I am having a difficult time trying to find the appropriate processor for this task.  The video that I am trying to record is from a 2MP imager.  The video format can be anything that can be readily viewed on a pc using VLC for example (mp4, h264... )  

The main hardware restriction is that the battery life should last upto 2 hours recording on a 1100mAh battery.

I do not have any software restrictions.

When I go to applications on TI's website, most of the block diagrams that are about camera's (digital video camera), they have application processor but no details.

Any tips or hints are greatly appreciated.

Thank you for your time and help.

Amer

  • 0
    Guru 31670 points

    Amer,

    How are you planning to stream to PC? Is it through Bluetooth/Wi-Fi or something else?

    Also where will you the encoding on? 

  • 0 in reply to Renjith Thomas
    Intellectual 470 points

    Renjith,

      Thank you for your reply.
      I am not planning to live stream to a pc.  The user would remove the SD card and use a pc to view the video.  
      The frame rate I am looking for is 15-30fps.
      The encoding would be done on the device itself and saved to the SD card.

    Thanks again,

    Amer 

  • 0 in reply to Amer Abufadel
    Guru 31670 points

    Amer,

    Have you explored OMAP3530 or DM3730 or its variants? There are different variats with From a power consumption perspective, it think this will be the best. Also it has support for PoP packaging where you can save on area and reduce form factor. It supports LPDDR and mDDR as well. It is also highly configurable in terms of Power and Clock, which will help you in saving power a lot.

  • 0 in reply to Renjith Thomas
    Intellectual 470 points

    Thank you Renjith for your help.

    I was going through TI's video encoders for linux for the OMAP part.  The H264 encoder does not support raw data capture from the sensor.  The MPEG4 datasheet does not specify.  Do you, or anyone else, have any knowledge if it does interface with an imager? 

    Thank you,

    A

  • 0 in reply to Amer Abufadel
    Guru 31670 points

    Amer,

    You've to use the capture driver for ISS subsystem. Using the capture driver your application can capture frames using V4L2 capture interface and pass the captured frames to H.264 encoder. The encoder will return the encoded stream, which you can store to disk. No encoder supports direct reading capture, which is the job of the capture driver generally.

  • 0 in reply to Renjith Thomas
    Intellectual 470 points

    Renjith,

      Is OMAP3530 recommended for new designs?  There is a disclaimer on its web page encouraging new designs to use OMAP 4.

    Thank you,

    Amer

  • 0 in reply to Amer Abufadel
    Guru 31670 points

    Amer,

    I may not be the right person to comment on this. But as far as I know OMAP35x/DM37x is still supported by TI. Even older SoC as still supported and active. I feel that OMAP4 will be an overkill for your application, unless you want to support 1080p in your device.