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#apertus IRC Channel Logs

2014/11/29

Timezone: UTC

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derWalter
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fsteinel_
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01:41
Bertl
off to bed now ... have a good one everyone!
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01:41
Bertl
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Bertl_zZ
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11:20
Bertl
morning folks!
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intracube_afk
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12:12
ItsMeLenny
morning
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ItsMeLenny
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davidak
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13:38
surami
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13:38
surami
hey!
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14:10
davidak
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14:12
surami
would it be possible to connect a coaxpress board to the Beta somehow? i'm just reading about that technology
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14:13
Bertl
yes, it would be possible
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14:15
surami
here is a document about the chipset: http://ww1.microchip.com/downloads/en/DeviceDoc/60001302A.pdf
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14:16
Bertl
well, that's an equalizer sec
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14:16
Bertl
*set
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14:16
Bertl
it is important for the cable part, but it still requires the actual Coaxpress interface
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14:17
surami
oh, i see
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14:18
Bertl
but the interface is basically SDI, so not that problematic
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14:18
Bertl
I would suggest adding the link to the lab or wiki though
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14:19
surami
ok, i will
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14:20
surami
some weeks ago here were somebody, who could
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14:20
surami
help you out with a framegrabber design
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14:20
danieel
Bertl: cxp and sdi share about as much as pcie and sdi :)
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14:24
Bertl
as you know all the electrical interfaces and the protocols very well, you might want to document them on the wiki :)
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14:27
danieel
what for? a comparison table might be handy, but if you want to know the interface, the best is to read its standard... otherwise a lot of false information gets mixed in
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14:27
Bertl
linking to those standards would be benefitial there
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14:28
danieel
the issue is that some are non free - that would need to be solved first
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14:28
danieel
(at least the SD has a free variant - without UHS)
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14:28
Bertl
well, link to the free ones then, and note for the others that they a non-free
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14:29
danieel
well.. i am not sure if there is any really free one - one that can be used without being part of a certification group
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14:31
danieel
the specs about interfaces - most of them are on wikipedia, is there a need to double that info?
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14:32
Bertl
all standards can be used without being part of a certification group
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14:32
Bertl
there is no such thing as a forbidden standard
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14:32
danieel
how do you obtain a VID then ?
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14:33
Bertl
yes, obviously there is a need to collect this information, as wikipedia does not list the electrical and encoding specs in a neat table somewhere
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14:37
philippej|away
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18:03
philippej
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se6astian|away
changed nick to: se6astian
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19:02
slikdigit_
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slikdigit
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19:02
slikdigit
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slikdigit
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intracube
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slikdigit
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20:03
surami
Bertl: what about Camera Link HS?
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20:04
surami
or Camera Link "Full" mode?
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20:05
Bertl
what about it?
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20:07
slikdigit
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20:08
surami
i meant a custom designed camera link board attached to the Beta
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20:08
Bertl
yes, would also be possible
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20:11
intracube
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20:11
intracube
changed nick to: intracube_afk
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20:24
surami
so this different protocols could be connected to the left/right side io shields?
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surami
i don't understand technically
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20:25
surami
or there will be a highspeed protocoll on the Beta?
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20:25
Bertl
there is a high speed shield, and a general purpose I/O shield
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20:26
Bertl
the high speed shield will at least connect 16 LVDS pairs with at least 1GBit/s per lane
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20:27
Bertl
this can be used to to connect certain interfaces directly and other interfaces via high speed serializer/deserializers
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20:29
surami
well I have to search things on the net to understand this :)
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20:29
surami
but thank for the explanation
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20:30
Bertl
no problem, let me know if you need more information
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20:56
se6astian
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21:08
surami
good night!
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surami
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surami
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surami
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21:22
rhavan
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21:28
Bertl
welcome rhavan!
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slikdigit
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22:24
comradekingu
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22:41
surami
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22:41
surami
back again
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22:42
surami
how much hdmi ports will be on the Beta and what type?
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22:44
surami
i'm thinking again on the 4k raw capture
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22:44
surami
if the 3 color channels could be delivered separetly
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22:45
surami
on 3 different hdmi ports
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22:45
Bertl
we have a 3xHDMI shield planned, which would allow for FullHD on each port
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22:45
surami
60fps?
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22:46
Bertl
should be doable, yes
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22:46
surami
and hdmi 1.4?
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22:46
surami
:)
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22:46
Bertl
probably not, because HDMI 1.4 requires higher pixel clocks
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22:47
Bertl
i.e. HDMI 1.4 adds 4kx2k modes
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22:48
surami
so 1.2
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22:48
Bertl
we plan to support a single high pixel clock HDMI shield
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22:48
Bertl
that one will probably be HDMI 1.4
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22:49
Bertl
yes, 165MHz (pixel clock) is most likely the maximum for the 3x HDMI shield
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22:49
surami
the color channels could be separeted on the fpga side and delivered separatly to HDMI ports?
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22:49
Bertl
yup
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22:50
g3gg0
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22:53
surami
if the raw data is "filtered"
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22:53
surami
with 3 different channels
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22:53
surami
r,g,b
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22:54
surami
it would be only noise on a HDMI display?
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22:54
surami
could the raw data separeted this way, 3 channels?
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22:55
surami
or the raw data should be processed first?
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22:55
surami
to do something on 3 channels?
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22:55
Bertl
you do not even need to split it into r,g,b
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22:56
Bertl
it's fine to send 3 sensel to the first HDMI out, 3 sensel to the second, 3 sensel to the third and so on and so forth
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22:56
surami
sensel?
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22:56
Bertl
(that's what we plan for recording 4k over 3xHDMI
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22:57
Bertl
)
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22:57
Bertl
sensel = photo sensitive element, can be R, G or B
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22:57
Bertl
(in our case)
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22:57
surami
aha
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22:58
surami
so in theory with a capturecard this data could be transfered something visible?
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22:58
Bertl
yup
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22:58
surami
i mean 3 hdmi input
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22:58
Bertl
as long as the capture card captures raw data without lossy compression
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22:59
surami
i found a card