possible low cost uP based DVB-S modulator
Posted: Wed Aug 05, 2015 5:38 pm
Hello All,
Just been playing with the BeagleBone Black. Loaded Debian 7, V4L2, and the Hauppauge PVR-USB2 drivers with very few problems. The main processor for this board is an AM3358 SoC, and has a 1GHz ARM Cortex-A8 main core with 4G eMMC and 512MB DDR3 RAM.
Also on board the SoC are a pair of 200MHz 32 bit microprocessors, each with their own programme, and data memory spaces. There is also a bank of memory shared between these processors and the ARM. Search word for these aux processors is Programmable Real-Time Unit (PRU). See https://www.youtube.com/watch?v=By9foc1iJ3Q
It may be possible to implement a DVB-S modulator using these PRUs, including digital filtering (?) with outputs feeding an IQ DAC, then a suitable up-converter to RF frequency of choice.
Can't help but think that this amount of extra hardware based realtime processing might be of use to the digital video community.
Regards, Mark
Just been playing with the BeagleBone Black. Loaded Debian 7, V4L2, and the Hauppauge PVR-USB2 drivers with very few problems. The main processor for this board is an AM3358 SoC, and has a 1GHz ARM Cortex-A8 main core with 4G eMMC and 512MB DDR3 RAM.
Also on board the SoC are a pair of 200MHz 32 bit microprocessors, each with their own programme, and data memory spaces. There is also a bank of memory shared between these processors and the ARM. Search word for these aux processors is Programmable Real-Time Unit (PRU). See https://www.youtube.com/watch?v=By9foc1iJ3Q
It may be possible to implement a DVB-S modulator using these PRUs, including digital filtering (?) with outputs feeding an IQ DAC, then a suitable up-converter to RF frequency of choice.
Can't help but think that this amount of extra hardware based realtime processing might be of use to the digital video community.
Regards, Mark