DLPC3470: issue of 1-bit external pattern

Hi User,

Welcome to e2e forum. 

I am not understanding the issue here, what do you mean "the other patterns will be impacted by one horizontal stripes pattern" .

After looking at the snapshot i am not able to match this with your comment...you mentioned 15 1 bit pattern but i am seeing only 10 1-bit pattern in each group.

Can you please express your issue more clearly.

Thanks,

Navneet

1/ I have configured the dlpc as 15 1-bit pattern but the last 5 pattern is "black", so i did not attach the last 5 pattern pictures.

2/ if the horizontal stripes pattern is not in the 10 1-bit patterns, the other 9 1-bit patterns which is captured by image sensor are good(see the 9th group patterns). But the other 9 1-bit patterns are bad if the the horizontal stripes pattern is in the 10 1-bit patterns(see the 4th~8th group patterns).

I am not sure if i have explained clearly.

Thanks very much.

the other 9 1-bit patterns is design as vertical stripes pattern, but you can see the horizontal stripes shadow on other 9 1-bit patterns.

Hi User,

Now i understood your query, when you have only one horizontal pattern in a group where all other patterns are vertical, then you are seeing the horizontal pattern in all patterns.

How you are sending your patterns to DLPC3470 ? Are you capturing the patterns using TrigOut2 signal.  

Is it possible for you to share the patterns with me.

Thanks,

Navneet

Hi Navneet:

Thanks very much for your quick feedback.

I use FPGA to send the 15 patterns on data0~data14 of DLPC. And capture the patterns using TrigOut2 signal.

Do you want the patterns picture or want to know how to generate the related patterns?

Best Regareds

Hi Navneet,

I have sent you a e-mail with the pattern document, please find it.

Best Regards

I will check and let you know my findings very soon in chat.

Thanks,

Navneet

HI User,

I am not able to find the snapshot which you had attached earlier in this ticket. Can you please reattach the snapshot again.

Thanks,

Mayank

User,

Any updates on this issue?

Regards,

Philippe Dollo

Hi User and Philippe,

I am still working on the issue, will share my findings hopefully by EOD.

Regards,

Mayank

User,

I am facing some issue in capturing individual bit planes via camera, will need some more time to fix it. I will share my findings as soon as possible. 

Regards,

Mayank

Ok, thanks very much. Waiting for your findings.

Hello Mayank,

Is there any progress?

Best Regards

Hi User,

I was able to reproduce the issue. I am debugging this further to get to the root cause.

Regards,

Mayank

Hi Mayank,

Thanks, please let me know if need my help.

Best Regards