YUV input format

yanbin yue

Hello everyone,

We use DM365 process a lens which output data format is YUV. We can get the data now as follow picture, but it looks like there is something setting error.

Could anybody give me any suggestion?

Thanks.

Yanbin Yue

over 14 years ago

0 TuffLi over 14 years ago

TI__Intellectual 2005 points

Hi,

What kind of YUV data you are using? CMOS sensor or YUV data like video decoder?

Best Regards,

Tuff Li

0 yanbin yue over 14 years ago in reply to TuffLi

Expert 1385 points

Hi TuffLi:

We use CMOS sensor YUV data, PE1005S.

Thanks.

Yanbin Yue

0 TuffLi over 14 years ago in reply to yanbin yue

TI__Intellectual 2005 points

Hi,

It looks your picture captured is good; did you check your lens is clean enough?

Another suggestion is, can you reduce the resolution/framerate output by your lens to check it again?

Best Regards,

Tuff Li

0 SANG-YONG over 14 years ago

TI__Intellectual 1870 points

Do you have multiple cameras which show the same problem? Or do you have only one but it shows this problem?

If it comes from only one camera, then I suspect the sensor connection. Please check the connection if you see this from only one camera.

regards,

Sang-Yong

0 Steve Clynes over 14 years ago

TI__Mastermind 43875 points

It looks like it may be a digital setup/hold issue on the digital data/clock between the camera anf the DM365..

Try inverting the active edge of the clock.

Make sure that the digital signal integrity between the sensor and DM is good (check with an oscilloscope that the data and clock edges are clean).

BR,

Steve

0 yanbin yue over 14 years ago in reply to TuffLi

Expert 1385 points

Hi Tuffli,

We have a develop board about the lens, the image in the board is very nice.

The lens's VCLK will not change even have changed the resolution.

Thanks,

Yanbin Yue

0 yanbin yue over 14 years ago in reply to SANG-YONG

Expert 1385 points

Hi Sang-Yong,

We have one cameras and when we use dm365 to capture a image, it show this problem.

When we use the develop board about the lens, the picture was very nice.

Thanks,

Yanbin Yue

0 yanbin yue over 14 years ago in reply to Steve Clynes

Expert 1385 points

Hi Steve,

I can't find out how to invert the active edge of the clock.

Could you help me?

Thanks,

Yanbin Yue

0 Steve Clynes over 14 years ago in reply to yanbin yue

TI__Mastermind 43875 points

The sensor may have a register to invert the active edge.

I am checking how to do this from the DM side.

In your configuration is the clock being sourced by the DM or by the imager?

BR,

Steve

0 yanbin yue over 14 years ago in reply to Steve Clynes

Expert 1385 points

Hi Steve,

We have reloved the problem, it is because of the clock voltage between lens and dm365 mismatch.

The lens clock voltage is 2.8V and beside dm365 it is 3.3V.

Thank you very much, and thanks to Tuffli and Sang-Yong.

Best Regards,

Yanbin Yue

0 Steve Clynes over 14 years ago in reply to yanbin yue

TI__Mastermind 43875 points

Excellent.

Glad you are now working well.

BR,

Steve

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YUV input format