Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Patent
1997-06-17
1998-11-10
Chevalier, Robert
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
386125, H04N 5917, H04N 5781
Patent
active
058356738
ABSTRACT:
A method for magnetically recording digital video signals includes the steps of: converting input digital video signals into data segmented into blocks each composed of a plurality of pixel data; compression-coding the blocks of pixel data block-by-block; converting the compression-coded data into channel-encoded data; and supplying the channel-encoded data to magnetic heads on a rotary drum for recording by such heads on a magnetic recording medium constituted by a nonmagnetic base having thereon a magnetic layer of at least one thin magnetic metal film which has an energy product of at least 75 G.cm.Oe, with the surface roughness of said magnetic recording medium being at most 0.003 .mu.m in center line average height Ra, and with the surface roughness of said magnetic recording medium being at most 0.04 .mu.m in ten point average height Rz.
REFERENCES:
patent: 5191436 (1993-03-01), Yonemitsu
patent: 5218599 (1993-06-01), Tsuyoshi et al.
patent: 5262877 (1993-11-01), Otsuka
patent: 5745641 (1998-04-01), De Haan et al.
Abe Mayumi
Arisaka Yuichi
Chiba Kazunobu
Sato Ken'ichi
Yamada Yukari
Chevalier Robert
Frommer William S.
Sony Corporation
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