Frage von ReinhardK:
Hello,
what because a Genlock signal from exactly? What voltage is the logical 1? 5Volt?
in a synchronization at 25fps: then each 1 / 25 seconds and sent a 1 otherwise the transmitted signal 0?
ReinhardK
Antwort von Markus:
Hello Reinhard,
a genlock (generator lock) is at first nothing more than a studio clock, ie a video signal, on whose clock other devices synchronized.
Example:
Example of Genlock ApplicationQuerverweis:
Wikipedia: Genlock What do you mean with the logical 1? Is perhaps of an external genlock (a device) the speech, the one with an external source to a common clock brings? If yes, of which device (Manufacturer, Model) you speak?
Antwort von ReinhardK:
owns the Genlock not a standardized format? So for example when such a Synchimpuls occurs (after each line or each half) and just how much with such a Genlock volt pulse is transmitted ...
The burst signal in PAL as 0.3V and has the Genlock synonymous irgendsoeinen but must have good ... I would simply like to know what a typical Genlock signal looks ... what voltages etc.
ReinhardK
Antwort von PeterM:
Since I'm just not s.Firmenrechner you now I can not send sample image.
In principle, a genlock signal is almost exactly like a composit signal without content that is black
Just to be clear to make a Genlock Signlal is NOT a data signal, it is therefore not readily than TTL signal.
helps you to hire the next synonymous if it is NTSC but principle is clearly
http://www.tek.com/Measurement/cgi-bin/framed.pl?Document=/Measurement/App_Notes/NTSC_Video_Msmt/genlock.html&FrameSet=television
By HDTV Genlock is another (Tristate) genlocking used.
To help you hire to be able to say something you do want.
Antwort von ReinhardK:
Hello,
I would like a device to synchronize a genlock input and thru offer. It is both for NTSC, PAL and synonymous if there is a special function for hdtv ...
The link was very helpful ... thank you very much! Do you have a Doc where the different types of genlock described (with images and the specifications)?
what measures must be because I take so I have a TTL signal from the genlock do (strengthen)?
Reinhard
Antwort von PeterM:
Because where I live and work, it is already evening. Therefore only a short link.
Maybe you can help the next.
For Intersil is to have lots of charts and data sheets but especially Spec video chips. Our company has made the fund a few Kösungen gebastelt, where masses are given much more synonymous with mini-computers will be solved
http://www.intersil.com/cda/deviceinfo/0%2C1477%2CISL59885%2C0.html.
Schönes Wochenende
Antwort von PeterM:
http://www.intersil.com/cda/deviceinfo/0%2C1477%2CISL59885%2C0.html
Antwort von ReinhardK:
many thanks for the links ...
I needed an extra IC synonymous to Genlock can receive? Most of these ICs allow a yes Genlock ... I want him so do not create but only able to receive and if necessary through additional equipment so that I can so enjoy.
Reinhard
Antwort von peterM:
Ch entirely understand what still does not want to do.
The ISL 59885 provides you everything but eigendlich available. If you are just reinforcing Genlock / want to distribute it only needs an F bas video amplifier. So what's at WR.
If you are active, but as you've described something with the timing signal will start but then you need only take a sync separator you for handling separate signals for horizontal and vertical offering. In addition, the IC so synonymous with the video of a freed black burst.
I think you should describe what times with what devices you want to do. Are you working with SD video or what the cause is then difficult with SDI HDTV.
As I said, for example if you only want two cameras contacts you need only a composite black burst signal. You can do this either from an external black burst produced Genarator provide or video from the masters of your pick. Both for the production as synonymous for the processing, there are also such as the Intersil IC make for tinkering.
Of course you can sowas synonymous in the studio needs to buy, nd then it will be really expensive when Tectronix
Antwort von JMitch:
I want to a video camera synchronously zb an LED wall control. will be synchronized throughout the Genlock ... ie My device must meet these Genlock can evaluate (and both for pal, ntsc as synonymous for HD video.
Antwort von JMitch:
to what extent does the genlock signal for HDTV to PAL?
Antwort von PeterM:
First, do you want to build yourself or buy as there are several possibilities.
Prof Video Walls example of Lighthouse of Barco or have an optional Genlock Input. This sychronisierst your Camera and the LED Wall. kamerea if you do not have genlock, you can signal to their synonymous use SYC. If your Videowall has no Genlock you can not synonymous Quattro graphics card with genlock module.
It will be difficult if you're really cheap product thus has the Vidowand.
The problem I often here in Asia with cheap products, no Sycmöglichkeitn hatt. Then you use a synonymous eifach genlock signal is not because the video is always behind the Wall Picture herläuft. Something like you can with widely adjustable nem TBC manage.
Because, a TBC in this case guns to shoot sparrows means you can you build it synonymous with the analogous IBERAL of chips which I have called thee, and üerb the delay of the shift sycksignale again rausholen usual journey to program but often ne Apps days before in Comuter or PIC.
Therefore, the cardinal asked what your hardware can do. As I said in the professional event is ne Led wall as we use them for grossverantaltungen and the cameras genlockfähig and it takes only a Black Burst (studio clock) generator. Something like you can for 20 euros yourself or for 500 to 1000 euros in the studio needs to buy.
Antwort von PeterM:
Another Nachrag. Normally you should be in such Apps to hire at events run it try to beat the netzfrquent schron run. Spec if thou hast HMI light is light FL are searched.
Ne ask next time you want to shoot only the signal or do you need the camera signal for something else.
If you really work in large walnut ich dich s.eine Kolegen, since I z, B Ü dare of technology and highly accurate clock system'm not the expert. I was before'm responsible for the design of special solutions, in the event area when you talk about LED technology plays to hire additional einigentausedn it the euro, the book does not have as Rollle ne schöne Gosse Baco 6mm technology quickly the price of a house exceeds.
Ask for special things simple again after
Antwort von ReinhardK:
Hello,
the video image is produced on a screen play and ausen around-the LEDs are ind ... LEDs and video will run synchronously with each other ... therefore Genlock ...
the add-on, I would build myself ... Genlock or part ... so now I need an IC, or is this plan different synonymous? On the screen or the video of course, everything can be possible, NTSC, PAL, HD (always more coming in), etc. -> the ledwand should always run synchronously to ...
a board already exists, a small s.die can be connected, on which the department is Genlock. This little board, I try to create. However, I am including a Genlock is used, but this is synonymous to integrate me something hard. I thought not synonymous, so that I have a special IC for this would require ...
How would you implement such a plan?
Reinhard
Antwort von ReinhardK:
therefore a ¼C is available ... until now was my plan (if possible) the sync signal with the latch and connect whenever a pulse is to enable the latch and the Ok s.die LED wall send ...
Of course, I could signal to the Genlock synonymous directly s.den ¼C send ... ie I need the display a selection option, where the user must adjust itself what format it in the video projection is used, so I know whether I ntsc, HD etc synch to?
or I used the dir of the proposed IC -> so know whether HD is present or not and send the signal s.den ¼C (which will be sent s.diesen - when Pinbeschriftung I could not make what could go s.den ¼C )? as a small sketch would be scolded super ...
Reinhard
Antwort von PeterM:
Unfortunately, shoots himself to me from your not specify what you really want to do.
A beisiel from our field
We make Multisreen applications up to HDTV.
Apps In this it is important that all movies synchronism, not after some time auseinaderlaufen. Our SYC einhaiten geährleisten in the frame area. because of unpredictable processes in computers but it can happen that a building 5ms later than on the other system, the viewer remembers nothing of it because the eye deviations in Subframebereich not responsible. Something else happens when we as shutter glasses syn. must. Then, we use additional graphics cards with Genlock board and each frame starts exat at the same time, so that the shutter glasses to the picture may be changing.
In the event subframesyc sector is therefore not necessary, since almost all projectors Vollbild expenditure accounts. So even if such a Multiscreenapp with its video camera filming makes no problem if you are not in an extremely short Shutterzeiten comes.
I erschlieest are not synonymous, which is exactly what you want to synch.
I think with an LED do you mean an LED video wall.
But what do you want the eigendlich Sych. Each display unit is already due to the signals with the SYC Nutzbild sychron. You need only to ensure that the XGA signal, or whatever you use is sychron.
For large Vidowalls con barco Lighthouse or you may use the entire signal processing Sych, so that the Izu Bildwechesl a specified date, but what do you need das If there really is in the studio area stroke Ü car etc, then the play but from 1000 to 2000 Euro for signal processing does not matter anymore. A single LED panel costs more, and as Controller of the gesagzt prof LED have the option.
If you really want what you have to tinker with the entire Siganlaufbereitung definable Sych.
Were the pioneers here Comodore people throughout the calculator using a black burst gesyncht have. Since both terms signal the hardware as synonymous of the software were known were also quite easy Titelgenratoren and many other things cheap realize.
Have made the like of which I described with an Intersil chip Sycseperator. By daruas from the Blackburst won TTL signal to the motherboard clock gesycht.
Describe einbfach times but precisely what you want to do.
BTW. It is a fatal mistake, which downkonvertewten video from a HDV Kameraeichenten Sinal has. In this case, as recommended then hie H1 with a Genlockzu sycnchen.
Antwort von ReinhardK:
Hello,
I have a LED-wall and in the middle of this wall is a canvas with which an Vido from any camera is recorded. This can be hdtv pal etc. these two video sources to run synchronously with each other ... that I wanted to have a Genlock realize, because the profs all cameras have been integrated. The LED wall is controlled via DMX and the rausschießen the data through a latch, I wanted to have a genlocksignal sync ... ie, the Genlock sync makes the latch transparent (enable line). only I do not know exactly how the signal path within my application of the BNC connector to latch should look like - ie what ICs etc must be integrated.
ReinhardK
Antwort von PeterM:
Maybe today I am hard of notion. Above all, what will it s.der LED Videowall controlled via DMX. That is "only" a serial protocol and lighting control with video has only little time to do so.
What data solllen "rausgeschossen be"
If you have anything but "transparent" ie any event synchronously to the video you want but gives you Syncseperator said exactly what you want, namely an event with which you can trigger your circuit.
Just another example from my practice. We have an application times needed a Stoboskop video has sychron triggered. With the trigger signal from the Syncseperator we have then the TTL of Strobos clocked.
Zugegebernermassen But I do not quite understand what your application really can be.
Antwort von ReinhardK:
Hi Peter,
can you sent me a few pictures showing how the genlock signal (with Burst, V-sync, etc.) for PAL, NTSC and HDTV looks ... So for PAL I know, but the other does not .. find it in the net auchncihts ... (ntsc well I think you have me at the first link shown - the difference is that the black does not equal value after the burst is available?)
ReinhardK
Antwort von PeterM:
http://www.chrontel.com/pdf/7015ds.pdf
I do not know whether you can help the next.
Otherwise, at times under HDTV HDTV Tristate sync google.
Synonymous SD above or just on the Intersil website. Da gibts synonymous genock generator ICs
If the thread but I still look at it, I am not sure that you the "shape" of a Sycsignal really helpful.
I would restrict myself to SD as you with his pal Blackburst synonymous ne HDTV Kamerea can attract.
Antwort von ReinhardK:
many thanks ...
with a Genlock Through makes no sense, or? The synchronous pulse of a place off (like a switch) s.alle participants sent so that all at the same time get the same signal.
ReinhardK
Antwort von PeterM:
No not really.
Other than with MIDI or DMX is the Genlock just a time / the clock for all hosts is the same
If you idennoch in and wants out, then only from the basic to units in a row to turn. But that is rather not the best solution, since in Annular Verdverdrahtung at large distances maturity differences occur. This is not quite as critical as in wiring components, but at great lengths just one problem.
Antwort von PeterM:
I bring the thread is again high.
Could it be that your problem is the question "Lighting LED flickers in video" is.
If you are PWM driven LED on the signal syvcen want, you can do that naturally with the SYC signal. It should Frquenz an n-times multiple of the refresh his.
Antwort von Ingo_Peters:
Hi Peter,
How can because the BNC cable to allow for a Genlock still not visible (for the human eye) Non-synchronicity occurs? Is there any value as Ethernet (100m) and DMX (max. 32 participants)?
Ingo
Antwort von robbie:
That's a good question ... One must remember that ultimately the image signal must be synonymous back again, so yes now the double length einzuberechnen is.
In addition, the damping and of course, the impedance (74Ohm) ... all this affects the signal duration ... But ultimately there is in TBC Videomischern again, the different signal durations compensate ... (we are moving in because surely ¼Sec - Area) ...
More than 100m without a good amplifier is not recommended anyway ...
Schöne Grüße,
Robbie
Antwort von Ingo_Peters:
in my case would be only a Genlock signal from the TBC to the device run - this may have been 50-60m from the TBC wegstehen ...
how it looks when I eg Through this device has a port for the Genlock possess, so that even more devices like the DMX-signal (32 participants per line) can connect. Does it make any sense? At what length is the synchronicity in this case no longer be granted - synonymous the 100m from TBC?
Ingo
