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Re: Camera I/F's

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On 08.7.2017 г. 21:05, Don Y wrote:
> I hacked together my "IP cameras" using some web cams for which I was
> able to track down some FOSS i/f implementation documentation.  This
> was OK for a proof of concept.  But, I now have to settle on "production"
> hardware.
>
> There seem to be a variety of i/f's for cameras:
> - RS170 (requires hardware to digitize the signal; inflexible)
> - parallel (video is digized, just needs to be captured at pixel rate)
> - USB (digitized but packed in proprietary transport protocols over USB)
> - CSI (digitized with specialty hardware required in host)
> - IP (digitized but packed in protocols over IP)
>
> The USB option is the easiest from the host's *hardware* point of view.
> But, seems to limit the devices that could be supported as camera
> vendors are loathe to publish details that only *their* driver implementers
> should need.
>
> RS170 is... "passe"
>
> Parallel requires lots of signals to/from the host/camera.
>
> CSI seems to be primarily supported on hosts intended to address the
> mobile market.
>
> As USB is essentially "free" (hardware-wise), adding support for it as
> an *alternative* interface seems prudent.
>
> Relying on CSI seems like it will restrict my choice of processor(s)
> going forward (I'd like to standardize on *a* host platform and not
> have to support a variety) -- though that's where the volume lies
> (think camera in cell phones).  OTOH, it may make getting components
> difficult (small fish, etc.)
>
> IP seems to have more costs than USB with little/no gain.
>
> Anyone been down this road who can share experiences?  Probably
> only looking at 10K/yr...

The obvious choice would be the MIPI cameras - like in every phone.
A few years ago I looked into that; I found out they (MIPI) had some
special (politburo) membership fee if you were a "small enterprise",
"small" meant if you had < $100M annual revenue IIRC...

It is getting all but impossible to be a small maker of tech gadgets,
everything is becoming accessible only for politburo members.

Dimiter

  ======================================================
  Dimiter Popoff, TGI             http://www.tgi-sci.com
  ======================================================
  http://www.flickr.com/photos/didi_tgi/

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Camera I/F's Don Y <blockedofcourse@foo.invalid> - 2017-07-08 11:05 -0700
  Re: Camera I/F's Dimiter_Popoff <dp@tgi-sci.com> - 2017-07-08 21:30 +0300
    Re: Camera I/F's Don Y <blockedofcourse@foo.invalid> - 2017-07-08 13:41 -0700
      Re: Camera I/F's Dimiter_Popoff <dp@tgi-sci.com> - 2017-07-09 01:53 +0300
        Re: Camera I/F's Don Y <blockedofcourse@foo.invalid> - 2017-07-09 09:21 -0700
  Re: Camera I/F's Joe Chisolm <jchisolm6@earthlink.net> - 2017-07-08 17:06 -0500
    Re: Camera I/F's Don Y <blockedofcourse@foo.invalid> - 2017-07-09 09:46 -0700
  Re: Camera I/F's Paul <paul@pcserviceselectronics.co.uk> - 2017-07-09 11:58 +0100
    Re: Camera I/F's Don Y <blockedofcourse@foo.invalid> - 2017-07-09 09:55 -0700
      Re: Camera I/F's Theo Markettos <theom+news@chiark.greenend.org.uk> - 2017-07-10 10:09 +0100
        Re: Camera I/F's Paul <paul@pcserviceselectronics.co.uk> - 2017-07-10 12:27 +0100
          Re: Camera I/F's Theo Markettos <theom+news@chiark.greenend.org.uk> - 2017-07-10 19:36 +0100
        Re: Camera I/F's Don Y <blockedofcourse@foo.invalid> - 2017-07-10 12:56 -0700

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