About the CVBS signal ，in omap3 and mx53 ， it will be called TV encoder module
2014-09-30 14:16 GMT+08:00 liyaoshi <[email protected]>: > Because I work for automotive company . if this confuse you , ignore the > surroud view and adas . > > > About the ISP , what I understand . > > from > http://pub.ucpros.com/download/ov7620_ov7120_v1.2whole.pdf?osCsid=g3j4cfseca1627jv9mc4lans75 > > You will get bt656 signal at last , right ? how do you connect to your BBB > board ? > > with USB ? You must have another mcu to convert BT656 digital signal to > memory data > > right ? so , if you can connect directly to OMAP3 ,you can save the USB > MCU > > Here is about the cvbs signal > http://en.wikipedia.org/wiki/Composite_video > > You can see , its a analog signal with base band . But , with gpio , it > can only generate 1 or 0 ,totally different raspi FM > > > 2014-09-30 13:11 GMT+08:00 Peter Fearing <[email protected]>: > >> I'm not sure what you mean by surround view/adas. They're both forward >> facing and will be fixed in position to try to eliminate any possible >> alignment issues. >> >> I can't see that the ISP is necessary for all image processing. If so >> that would make the Black completely incompatible with any sort of camera >> project, and I've found plenty of examples of people using cameras with it >> -- just no analog cameras yet, which to be fair won't be necessary for the >> final version of what we're doing. >> Certainly there are available capes for expanding the USB capabilities, >> and it's possible the necessary cameras can be recognized as USB cameras. >> I've even seen a couple camera capes that are comparable to what we're >> doing. >> >> Can you be more specific about the limitations on generating a CVBS >> signal? >> >> On Friday, September 26, 2014 2:22:40 AM UTC-5, liyaoshi wrote: >>> >>> And >>> omap3 have 3 hardware overlay >>> >>> 2014-09-26 15:11 GMT+08:00 liyaoshi <[email protected]>: >>> >>>> If I understand correctly >>>> It should like surround view or adas ? >>>> and as I know , AM335X don't have isp . while omap3 have it . >>>> while cvbs signal in . camera module will turn to bt656 or what ever >>>> digital signal , as usually BT656 >>>> >>>> And when you can catch BT656 digital signal . you can program it to >>>> overlay or something . >>>> >>>> And about the CVBS out signal . You can NOT generate it by GPIO . >>>> >>>> For Your application .As I think , You should use OMAP3 BB-XM board >>>> with omap3 soc >>>> >>>> It will have a isp and cvbs out,only problem is it will only have 1 isp >>>> >>>> if you want to get another work with usb . >>>> >>>> >>>> >>>> >>>> >>>> 2014-09-26 4:32 GMT+08:00 <[email protected]>: >>>> >>>> Hi all >>>>> >>>>> I and a couple guys are trying to build a system from the BeagleBone >>>>> Black that uses an IR and color camera for quadcopter video. >>>>> We have one of each of these cameras >>>>> http://dlnmh9ip6v2uc.cloudfront.net/datasheets/ >>>>> Sensors/LightImaging/32KM_spec.docx.pdf >>>>> http://pub.ucpros.com/download/ov7620_ov7120_v1.2whole.pdf?osCsid= >>>>> g3j4cfseca1627jv9mc4lans75 >>>>> http://www.drs.com/products/rsta/PDF/Tamarisk.pdf >>>>> The end goal is to be able to output a video stream of either (1) the >>>>> color camera (2) the IR camera (3) a composite video - b/w or color, >>>>> overlay or other. It has to be composite video for the quadcopter. (it's >>>>> a >>>>> system already setup and we're just doing add-on) >>>>> Known problems: >>>>> The BeagleBone Black only has one USB port. I can probably figure out >>>>> how to make the IR camera recognizable by the system through the USB port, >>>>> but the other two are a bit more complicated -- one is purerly analog NTSC >>>>> and the other has a variety of digital options and a monochrome NTSC >>>>> backup/test output. Maybe there's a way to configure the GPIOs to handle >>>>> this? >>>>> I'm planning on using OpenCV for the overlay/processing, though I'm >>>>> not very familiar with it. >>>>> >>>>> Sound crazy? It is, but that's what we're doing... >>>>> >>>>> -- >>>>> For more options, visit http://beagleboard.org/discuss >>>>> --- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "BeagleBoard" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to [email protected]. >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>> >>>> >>> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to the Google Groups >> "BeagleBoard" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> For more options, visit https://groups.google.com/d/optout. >> > > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. 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