International Organization for Standardization (ISO)
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ISO/IEC 25435:2006
Scope
This International Standard specifies the mechanical, physical and optical characteristics of a 60 mm, readonly
ODC having a maximum capacity of 1,8 Gbytes. It specifies the physical format, the quality of the
recorded signals, the format of the data and its modulation method, thereby allowing for information
interchange by means of such ODCs.
This International Standard specifies two types of ODCs, Type A and Type B:
Type A: Single layer disk with maximum recorded capacity of 0,9 G-bytes;
Type B: Dual layer disk with maximum recorded capacity of 1,8 G-bytes.
Information interchange between systems also requires, at a minimum, agreement between the interchange
parties upon the interchange code(s) and the specifications of the structure and labeling of the information on
the interchanged ODCs. UMD™ is the trade mark of Sony Computer Entertainment Inc.
ISO/IEC 25435:2006 history
2006ISO/IEC 25435:2006 Data Interchange on 60 mm Read-Only ODC - Capacity: 1,8 Gbytes (UMDTM)