Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Patent
1994-06-15
1996-12-10
Tran, Thai Q.
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
360 32, H04N 979, G11B 500
Patent
active
055836488
ABSTRACT:
Whether or not a luminance signal or an HD input signal is input to a picture signal recording apparatus is detected, and a recording mode is determined according to the detection of the luminance signal in a recording mode determining unit. In cases where the luminance signal is detected, first and second color difference signals of the HD input signal are alternately deleted on every scanning line. Thereafter, the luminance signal pertaining to odd-numbered scanning lines and the first color difference signal are time-compressed and multiplexed on every scanning line, and the luminance signal pertaining to even-numbered scanning lines and the second color difference signal are time-compressed and multiplexed on every scanning line. In contrast, in cases where the luminance signal is not detected, a luminance signal and first and second color difference signals of a normal picture signal input to the apparatus are time-compressed and multiplexed on every scanning line. Thereafter, the signals multiplexed are recorded on a magnetic tape according to the recording mode. Therefore, even though the number of scanning lines in the HD input signal is higher than that in the normal picture signal, the first and second color signals can be recorded within a limited frequency band.
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Asai Hiroshi
Ichinoi Yutaka
Isobe Yutaka
Turuta Masahiko
Yoshida Mitsuhiro
Chevalier Robert
Tran Thai Q.
Victor Company of Japan Ltd.
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