Jul 11, 2006 #1 S suwaii Member level 4 Joined Jan 21, 2006 Messages 68 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,286 Activity points 1,830 video pic adc i use pic microcontroller to convert video analog to digital and i interrupt the pic after few second then i continoue conversion ... so that after interrupt finished the video signal will start conversion from beging line#1 or start from it stop......
video pic adc i use pic microcontroller to convert video analog to digital and i interrupt the pic after few second then i continoue conversion ... so that after interrupt finished the video signal will start conversion from beging line#1 or start from it stop......
Jul 12, 2006 #2 J jcdup Newbie level 6 Joined Jun 21, 2006 Messages 14 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,345 Re: video pic adc Hi suwaii, I'm not sure what your question is. Cheers Johann
Jul 12, 2006 #3 K KST Full Member level 2 Joined Dec 12, 2005 Messages 129 Helped 7 Reputation 14 Reaction score 0 Trophy points 1,296 Activity points 1,936 Re: video pic adc ADC video with ADC of PIC ??? I know that bandwidth of video is 6.5 MHz (NTSC). If you ADC it, you need ADC has got sample >= 13 Msps . . . . ADC of PIC has got sample = 200 Kbps ! . . . . . . . Good luck for U !
Re: video pic adc ADC video with ADC of PIC ??? I know that bandwidth of video is 6.5 MHz (NTSC). If you ADC it, you need ADC has got sample >= 13 Msps . . . . ADC of PIC has got sample = 200 Kbps ! . . . . . . . Good luck for U !
Jul 12, 2006 #4 S suwaii Member level 4 Joined Jan 21, 2006 Messages 68 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,286 Activity points 1,830 Re: video pic adc i will rewrite again : since we can not measure high speed data direct to parallel port and without using FIFO memory assume we want to convert the video analog signal to digital and the convertion store in SRAM so that we have to stop analog video signal to give PC parallel port time to read the digital video that store in SRAM how we can stop video signal and if we stop ADC chip conversion will video signal stop and after ADC chip continue conversion will video signal continue from where it stop or start from begining line#1 of picture
Re: video pic adc i will rewrite again : since we can not measure high speed data direct to parallel port and without using FIFO memory assume we want to convert the video analog signal to digital and the convertion store in SRAM so that we have to stop analog video signal to give PC parallel port time to read the digital video that store in SRAM how we can stop video signal and if we stop ADC chip conversion will video signal stop and after ADC chip continue conversion will video signal continue from where it stop or start from begining line#1 of picture