DLP 4710 3D & Parllax

Sacha TABARLY

Prodigy 130 points

Other Parts Discussed in Thread: DLP4710, DLPA3005, DLPC3439, DLP3010, DLP2010

Hello,

I'm currently working with the DLP4710 EVM with DLPA3005 & DLPA 3439 chips.

I looked for the 3D & Parallax feature on the documentation. But I did not find any information.

How can I do to enable these features ?

Thank you.

over 8 years ago

0 Nadine Estermann over 8 years ago

TI__Genius 10495 points

Hello User,
Thank you for your interest in our DLP Technology.

We have specific requirements on the input format to be able to support 3D. Please take a look at the DLPC3439 datasheet under following link:

www.ti.com/.../dlps057b.pdf

Please refer to page 29.

Your front-end processor has to provide the input frame sequential as shown in the datasheet.

Please let me know if you have any further questions.

Best regards,

Nadine

0 Sacha TABARLY over 8 years ago in reply to Nadine Estermann

Prodigy 130 points

Thanks for your quick feedback Nadine!

Does is also appl to the keystone correction issue

0 Nadine Estermann over 8 years ago in reply to Sacha TABARLY

TI__Genius 10495 points

Hello User,

Unfortunately we don't support keystone with the DLP4710 chipset. Your front-end processor has to take care of keystone in case it is needed.

Best regards,

Nadine

0 Sacha TABARLY over 8 years ago in reply to Nadine Estermann

Prodigy 130 points

Hello,

Can you please tell me what type of models can support the keystone ?
Can you give me some link about that ?

Thank you

0 Nadine Estermann over 8 years ago in reply to Sacha TABARLY

TI__Genius 10495 points

Hello User,

The DLP LightCrafter Display 3010 and 2010 EVM both supports keystone. The projection pitch angle is limited to the range of –40 to 40 degrees.

Please see links below for the EVMs:

www.ti.com/.../dlpdlcr3010evm
www.ti.com/.../dlpdlcr2010evm

Best regards,

Nadine

0 Sacha TABARLY over 8 years ago in reply to Nadine Estermann

Prodigy 130 points

Dear Nadine,

Thanks so much for your feedback!

Unfortunately, it seems that these EVM are for smaller resolutions DMDs.

If we purchase one of these references, can we use their keystone functionnality or how can introduce this functionnality in our proejctor settings (as it is a very important one).

Thanks again for your support, looking forward for your early reply!

Ahmed

0 Nadine Estermann over 8 years ago in reply to Sacha TABARLY

TI__Genius 10495 points

Hello Ahmed,

Thank you for your interest in our DLP Technology.

I am not sure if I understand your question fully.

In general keystone is only supported for the DLP2010 (854x480) chipset and the DLP3010 (1280x720) chipset. In case of the DLP4710 (1920x1080) we currently don't support keystone but there is always the possibility to let the front-end processor take care of keystone.

Our 4710EVM reference design doesn't have this capability. We leave it up to our customer to implement if needed.

Best regards,

Nadine

0 Sacha TABARLY over 8 years ago in reply to Nadine Estermann

Prodigy 130 points

Dear Nadine,

Thank you for your feedback.

When you're talking about the front-end processor, do you mean the ITE IT6801 ?

Another point, we can't find any information concerning the contrast in this documentation www.ti.com/.../dlpu035.pdf. How can we setup this parameter ?

Looking forward for your reply !

Best,

Ahmed

0 Nadine Estermann over 8 years ago in reply to Sacha TABARLY

TI__Genius 10495 points

Hello Ahmed,

In our reference design we used the ITE6801 which is a HDMI receiver and a MSP430 as a front-end processor.

The MSP430 is handling the communication between the receiver and the DLPC3439 controller.

For keystone support you would have to use a front-end processor who is capable of doing the keystone for you.

I am not sure what you mean with the contrast in this document. The document is explaining the different I2C commands which can be used to control the DLPC3439.

Can you please clarify ?

Thanks,

Nadine

0 Sacha TABARLY over 8 years ago in reply to Nadine Estermann

Prodigy 130 points

Hi Nadine,

Would it work if we used the front end processor that is used in the other EVM that support keystone function?

Otherwise could you maybe tell us whcih front-end processor is capable to do it ?

Regarding "contrast", i'm sorry i wasn't clear enough. I mean the ability to increase/decrease contrast and brightness (similarly to the settings available on usual Tvs and projectors on the market).

Many thanks again for your great support Nadine!

Cheers,

Ahmed

0 Nadine Estermann over 8 years ago in reply to Sacha TABARLY

TI__Genius 10495 points

Hello Ahmed,

The ITE6801 is only a HDMI receiver which doesn't do any image processing like keystone. Therefore keystone is not supported on our DLP LightCrafter 4710EVM.

We have a few companies which we know that they are providing processors which would have the keystone capabilities. I listed a view of them below but since we leave it normally to our customer to pick the front-end solution this list might not show all the available companies.

PixelWork
Actions Micro
iChip

Brightness can be increased and decreased by adjusting the LED current of the system. The LED current adjustment can be done by sending I2C commands to the DLP controller.

Our DLP LightCrafter GUI has the capability of adjusting the LED current so you can just try it out. The only way to adjust contrast would be with our LABB algorithm..

I would like to refer you to following app note http://www.ti.com/lit/an/dlpa058/dlpa058.pdf. This feature is also supported in our DLP LightCrafter GUI.

Best regards,

Nadine

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