1. Design and Development of a Multi Format Converter for Target detection systems

2. Scope: This project aims at design and development of a Multi format video converter for converting the analog video data to digital format used for target detection applications. The digital converted data is then compressed and transferred to the computing device such as a personal computer through USB/ Ethernet port. Objective: The transmission and storage of analog signals is tedious and time consuming process. Where as it is easier in digital signals. Also analog signal processing is difficult compared to digital signal processing. The recent development in DSP leads to easier data manipulations. Hence these factors influence in design and development of this module.

3. Video Conversion & Compression USB Controller Ethernet Controller Analog Input Digital Video LAN Port USB Port Fig: Block representation of the proposed module.

7. 4.5 MHz Sound Carrier 4.2 MHz Video Bandwidth 3.579545 MHz Color Subcarrier Frequency 60 Hz Vertical Frequency 15.734 kHz Horizontal Frequency 525/60 Lines/Field N T S C N ational T elevision S ystem C ommittee

10. PAL Signal details For PAL-B/G the signal has these characteristics Parameter Value Clock frequency 14.8 MHz Bandwidth 5.0 MHz Horizontal sync polarity Negative Total time for each line 64.000 µs Front porch (A) 1.65 µs Sync pulse length (B) 4.7±0.20 µs Back porch (C) 5.7±0.20 µs Active video (D) 51.95 µs

11. Parameter Value Vertical lines 313 (625 total) Vertical lines visible 288 (576 total) Vertical sync polarity Negative (burst) Vertical frequency 50 Hz Sync pulse length (F) 0.576 ms Active video (H) 18.4 ms

12. PAL broadcast systems This table illustrates the differences: PAL B PAL G, H PAL I PAL M PAL D PAL N PAL Nc Transmission Band VHF UHF UHF/VHF UHF/VHF VHF UHF/VHF UHF/VHF Lines/Fields 625/50 625/50 625/50 525/60 625/50 625/50 625/50 Video Bandwidth 5.0 MHz 5.0 MHz 5.5 MHz 4.2 MHz 6.0 MHz 5.0 MHz 4.2 MHz Sound Carrier 5.5 MHz 5.5 MHz 6.0 MHz 4.5 MHz 6.5 MHz 5.5 MHz 4.5 MHz Channel Bandwidth 7 MHz 8 MHz 8 MHz 6 MHz 8 MHz 6 MHz 6 MHz Active lines 576 576 582* 480 576 576 576

14. 4.5 MHz 4.5 MHz 5.5 MHz Sound Carrier 4.2 MHz 4.2 MHz 5.0 MHz Video Bandwidth 3.575611 MHz 3.582056 MHz 4.433618 MHz Color Sub Carrier 60 Hz 50 Hz 50 Hz Vertical Freq. 15.750 kHz 15.625 kHz 15.625 kHz Horizontal Freq. 525/60 625/50 625/50 Line/Field PAL M PAL N PAL SYSTEM P A L Phase Alternating Line

16. 6.5 MHz 5.5 MHz Sound Carrier 6.0 MHz 5.0 MHz Video Bandwidth 50 Hz 50 Hz Vertical Frequency 15.625 kHz 15.625 kHz Horizontal Frequency 625/50 625/50 Line/Field SECAM D,K,K1,L SECAM B,G,H SYSTEM SECAM S e quential C ouleur A vec M emoire or S equential C olor with M emory

19. The Composite Video Signal

21. Figure 2. Color Information Signal for a Color Bar Line (Including the Color Burst)

22. The composite color video signal, often called the Color Video, Blank, and Sync (CVBS) signal, is the sum of Y and C , is shown in Figure 3. CVBS = Y + C The two components Y and C can also be distributed separately as two independent signals. These two signals together are called either Y/C or S-video.

26. H Sync & V Sync

29. Figure: Analog encoding from R'G'B' to CVBS.