DISK-SHAPED RECORD MEDIUM Russian patent published in 1995 - IPC

Abstract RU 2032233 C1

FIELD: recording engineering. SUBSTANCE: sound data recording area inner diameter in disk-shaped record medium is 28 to 50 mm. Outer diameter of this area is 58 to 62 mm for inner diameter of 28 mm and 71 to 73 mm for inner diameter of 50 mm. Sound data is compressed before being entered in recording layer. EFFECT: enlarged functional capabilities, improved design. 8 cl, 13 dwg, 1 tbl

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RU 2 032 233 C1

Authors

Katsuaki Tsurusina[Jp]

Tadao Esida[Jp]

Dates

1995-03-27—Published

1991-08-23—Filed