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#apertus IRC Channel Logs

2016/08/24

Timezone: UTC


01:21
jucar
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01:33
juand
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01:33
Bertl_oO
hey juand! how's going?
01:38
juand
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01:40
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01:42
intracube
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03:09
Spirit532
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03:13
Konstantin
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03:19
Konstantin
Dont know if some one is online(awake), just a question, im thinking about building a HDMI to SDI and SDI to HDMI, it is not the easiest thing to do i know. But just wanted to know what you guys think of that and if you have any experience with doing similar things. I know allot about Electronic design but im a analog guy, was never so into FPGAs etc. but this would be something to learn from.
03:20
Bertl_oO
yeah, you definitely need an FPGA for this kind of stuff
03:22
Konstantin
i know
03:22
Bertl_oO
do you have a deisgn for the actual conversion process? do you want to convert on the fly or buffer a whole frame?
03:23
Konstantin
but the question is how big/fast it has to be
03:23
Bertl_oO
that depends on the resolutions you want to support
03:23
Konstantin
on the fly would be nice to save the memory and therfor alot of pins
03:24
Konstantin
for a start 1080 would do the trick
03:24
Bertl_oO
p25/p30/p60/p120? :)
03:24
Konstantin
60p
03:25
Bertl_oO
so that is about 1.5Gbit encoded HDMI data
03:25
Konstantin
jup about the 3g
03:25
Bertl_oO
(per TMDS channel, that is)
03:25
Konstantin
standart
03:26
Bertl_oO
that can be done without MGTs for output, but probably tricky for input unless you want to use specific chips
03:26
Konstantin
hmm
03:26
Bertl_oO
are you planning an FPGA only solution?
03:27
Bertl_oO
if so, I would make sure that you have at least 8 MGTs
03:27
Konstantin
Probably ore Interface with an AD chip on the HDMI site
03:28
Bertl_oO
yeah, that's the other way to address that
03:28
Bertl_oO
have specialized HDMI/SDI in/out interface chips
03:28
Konstantin
hmm 8 hope to get a sens full page
03:28
Bertl_oO
in this case the FPGA doesn't need to be fast or feature MGTs
03:29
Konstantin
ok that is what i thougt for using such chips
03:29
Konstantin
but have to see if i can even get them
03:29
Bertl_oO
but of course, you lose some flexibility
03:30
Konstantin
rigth too
03:30
Bertl_oO
yes, they are readily available, from analog devices, the 7611 and 7513
03:30
Bertl_oO
for SDI the Texas Instruments LMH* series
03:31
Konstantin
yes the HDMI
03:31
Bertl_oO
LMH0340 is probably the best choice here
03:32
Konstantin
did not knew the LMH series
03:32
Konstantin
ohhh yes thats what i was looking for the LMH seams nice
03:37
Konstantin
i will look into it witch solution migth work best, to do it in one FPGA might even be ceaper or using combination some other Serializers can be "missues" to serialize SDI
03:38
Bertl_oO
keep us updated on your progress
03:41
Konstantin
i will could be usefull maybe for some of your stuff, and maybe later a more powerful version but 1080p 60fps is good for a start ^^
03:41
Konstantin
se ya later
03:48
Konstantin
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04:10
jucar
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05:45
DGMurdockIII
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06:34
Bertl_oO
off to bed now ... have a good one everyone!
06:34
Bertl_oO
changed nick to: Bertl_zZ
07:18
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09:20
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09:37
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10:30
se6astian|away
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10:34
juand
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12:13
maxbxl
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12:25
juand
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12:26
Spirit532
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12:27
hozer
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12:50
Bertl_zZ
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12:50
Bertl
morning folks!
13:32
se6astian
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14:28
Andrej74
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14:55
jucar
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15:15
jucar
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15:58
Bertl
off for now ... bbl
15:58
Bertl
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16:07
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maxbxl
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17:02
tezburma
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17:20
se6astian|away
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19:27
maxbxl
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21:22
Bertl_oO
off to bed now ... have a good one everyone!
21:22
Bertl_oO
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21:38
Andrej74
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22:04
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22:17
se6astian
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23:19
jucar
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