Burst cutting area
Optical discs |
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In computing, the burst cutting area (BCA) or narrow burst cutting area (NBCA) is the circular area near the center of a
If a BCA mark is present, it is visible to the naked eye between a radius 22.3±0.4 mm and 23.5±0.5 mm.
The data stored in the BCA can be from 12 bytes to 188 bytes in steps of 16 bytes.[2] The BCA can be read using the same laser for reading regular data,[2] but requires special circuitry to be decoded. It is not mandatory for DVD players to support reading the BCA, but DVD-ROM drives should, according to the Mt. Fuji specification (an industry-standard optical drive command set).[3][4] The Burst Cutting Area cannot be written without using special equipment, therefore it can be used as a tamper-proof means of identifying individual discs.
The
See also
Notes
- ^ DVD Specification
- ^ a b "PDSC - Replication and BCA". Panasonic Disc Services Corporation. 1998. Archived from the original on January 28, 1999.
- ^ INF-8090, Mt. Fuji Commands for Multimedia Devices Version 8, Section 2.2.13, ftp://ftp.seagate.com/sff/INF-8090.PDF[permanent dead link]
- ^ "INF-TA-1010 - Mt. Fuji Commands for Multimedia Devices Rev 1.0.0". February 23, 2018. Retrieved June 25, 2022.
- ^ "PCTechGuide - The PC Technology Guide". www.pctechguide.com. Archived from the original on 2006-06-24.
- ^ ExtremeTech. CPRM for DVD-RAM Archived 2011-06-07 at the Wayback Machine
- ^ ExtremeTech. CPRM for DVD-R/RW Archived 2011-06-07 at the Wayback Machine
References
- Ecma International. Standard ECMA-267: 120 mm DVD - Read-Only Disk.
- DVD Forum. DVD Specification: Part 1, Annex K.
- Blu-ray Disc Association. BD ROM - Physical Format Specifications (March 2007) Archived 2011-09-28 at the Wayback Machine.
- OSTA. "Understanding DVD: Disc Construction and Manufacturing".
- OSTA. "Understanding DVD: Copying Deterrents and Content Protection".
- DVD FAQ. "What is BCA or NBCA?".
- DVD Demystified Glossary. "BCA".
- DVD Burning Glossary. "BCA - Burst Cutting Area".