RTOS/TDA2P-ACD: Issue with frame generation

Abhay Sorte

Part Number: TDA2P-ACD

Tool/software: TI-RTOS

Hello All,

We are working with CVBS cameras & Intersil ISL79987 decoder interfaced to TDA2Px-EVM. As a standard for NTSC video capture, frames received are of resolution 720X240 –with EVEN & ODD frame fields.

But to process the captured frame correctly for algorithm usage, frame of 720 X 480 are to be generated at low level by using each EVEN & ODD frame field of each camera channel. This is required because of limitation of the CVBS-MIPI converter which doesn’t have frame buffer to perform this operation.

Referring to the Section 12.4 of TRM as shown below, can we achieve this by setting "VPE_DEI_REG0" bit 31 (PROGRESSIVE_BYPASS ) to 0x0 (Normal Deinterlace Mode).

Regards,

Abhay

over 7 years ago

0 Brijesh Jadav over 7 years ago

TI__Guru**** 496655 points

Abhay,

No, it is for different purpose. DEI generates progressive frame out of field.. It cannot simply merge two fields.. You require to do it using EDMA,

Rgds,
Brijesh

0 Abhay Sorte over 7 years ago in reply to Brijesh Jadav

Genius 4105 points

Hello Brijesh,

Thanks for quick reply. Do we have example of edma usage in vision sdk examples which you can point out for reference.

Regards,
Abhay

0 Brijesh Jadav over 7 years ago in reply to Abhay Sorte

TI__Guru**** 496655 points

Abhay,

No, VSDK does not have this example. But you could refer to ISS Capture/ISP/Simcop links for EDMA usage.

Rgds,
Brijesh

0 Abhay Sorte over 7 years ago in reply to Brijesh Jadav

Genius 4105 points

OK Brijesh.

Regards,
Abhay

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RTOS/TDA2P-ACD: Issue with frame generation