Converting apparatus

Details Converting apparatus Converting apparatus

1997-08-13

2000-04-25

Lee, Michael H.

Television

Format conversion

Specified chrominance processing

348642, H04N 701, H04N 1120

Patent

active

060550198

ABSTRACT:
A digital component signal derived from a video camera and the like is converted into a digital composite signal such as a color TV signal by a low-cost converting apparatus with a simple circuit arrangement. The converting apparatus includes an encoding circuit for encoding the inputted digital component signal to produce a digital component signal having a first sampling frequency equal to a sampling frequency of a luminance signal of the inputted digital component signal, an oversampling filter circuit for oversampling a digital composite signal outputted from the encoding circuit by a second sampling frequency higher than the first sampling frequency and thereafter for removing unnecessary high frequency components from the over-sampled digital composite signal, and a rate converting circuit for rate-converting the second sampling frequency of the digital composite signal outputted from the oversampling filter circuit into a third sampling frequency different from the first sampling frequency.

REFERENCES:
patent: 5057911 (1991-10-01), Stec et al.
patent: 5268750 (1993-12-01), Stec et al.
patent: 5526055 (1996-06-01), Zhang et al.

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