System for transmitting a digital video signal including time co

Details System for transmitting a digital video signal including time co System for transmitting a digital video signal including time co

1990-04-23

1991-06-25

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358320, 358310, 360 22, H04N 1106, H04N 989, H04N 979, G11B 502

Patent

active

050271938

ABSTRACT:
In the transmission of digital video data signals, for example, in a digital video tape recorder, a luminance signal and first and second chrominance signals, such as R-Y and B-Y, are individually sampled to provide respective digital luminance data signals and first and second digital chrominance data signals for forming a high-definition video picture. Time code data signals representing the corresponding frame including the sampled signals are provided as individual sets of identical signals. The digital luminance data signals and the first and second digital chrominance data signals are divided into respective sets thereof which each consist of two successive data signals. The sets of time code data signals, digital luminance and first and second digital chrominance data signals are distributed into a plurality of transmission channels in such a manner that each set of digital luminance data signals is interleaved between sets of the first and second digital chrominance data signals, respectively, in each of the transmission channels and that each of the sets of time code data signals is likewise distributed into each of the channels. Further, one of the two successive data signals in each of the sets of digital luminance data signals, first and second digital chrominance data signals and time code data signals is inverted for obtaining the complement of the one of the two successive data signals in each set which has been inverted, thereby substantially minimizing any DC or low-frequency component in each of the transmission channels.

REFERENCES:
patent: 4456930 (1984-07-01), Hashimoto
patent: 4712143 (1987-12-01), Kawakami et al.
patent: 4777539 (1988-10-01), Nomura et al.

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