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New method for the implementation of an NTSC digital video decoder

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2 Author(s)
Ching-Chih Kuo ; Dept. of Electron. Eng., Hwa Hsia Coll. of Technol. & Commerce, Taipei, Taiwan ; Yen-Ting Chen

This paper presents a new method for the implementation of an NTSC digital video decoder. This new fully digital architecture uses a phase-locked loop to compensate the unstable video source and an adaptive comb filter to improve the quality of Y/C separation. Simulation results show that it can successfully combat a sinusoidal timing variation of ±2 μs for horizontal line lengths within one frame. It can also lock to a 3.58 MHz color subcarrier with frequency variation up to ±500 Hz

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Consumer Electronics, IEEE Transactions on  (Volume:48 ,  Issue: 2 )