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Private company

B-CAS

Japanese conditional access system

B-CAS (BS Conditional Access Systems Co., Ltd.) is a vendor and operator of the ISDB CAS system in Japan, largely owned by the public broadcaster NHK with some other electronics companies and broadcasters airing in BSAT. It also refers to the reception method (B-CAS method) that this company offers. All ISDB receiving apparatus such as DTT TV, tuner, and DVD recorder except 1seg-only devices require a B-CAS card under regulation and B-CAS cards are supplied with most units at purchase.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

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Photo: TTTNIS, CC0, via Wikimedia Commons3

B-CAS (BS Conditional Access Systems Co., Ltd.) is a vendor and operator of the ISDB CAS system in Japan, largely owned by the public broadcaster NHK with some other electronics companies and broadcasters airing in BSAT. It also refers to the reception method (B-CAS method) that this company offers.2

Sources

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