Closed captioning, used to provide the text of a show's audio portion to those who may have trouble hearing it
Case Closed | Closed-circuit television | Frontier Closed Area | Closed-form expression | closed captioning | Comparison of open source and closed source | closed form | '''open''', '''semi-open''', and '''semi-closed''' | List of closed railway stations in Victoria | list of closed railway stations in Victoria | List of closed railway stations in Britain: K-L | Krasny Oktyabr Closed Joint-Stock Company | Closed sessions of the United States Senate | ''Closed on account of happiness.'' Two Danish resistance fighters are guarding a shop while the owner is celebrating the liberation of Denmark on 5 May 1945. The man on the left is wearing a captive German Stahlhelm | closed manifold | Closed for Business | Closed-eye hallucination | closed city | closed-circuit television | Closed captioning | closed | Close, Closed, Closure | Case Closed: The Phantom of Baker Street | Case Closed: The Last Wizard of the Century | Case Closed: Strategy Above the Depths |
Norpak's products, now part of and complementary to the Ross Video line, include equipment for embedding data in a television or video signal such as for closed captioning, XDS, V-chip data, non-teletext NABTS data for closed-circuit data transmission, and other data protocols for VBI transmission.
Todd succeeded in efforts to provide closed captioning on Houston's government-information Government-access television (GATV) channel so that weekly televised city council meetings would be accessible to the hearing-impaired.
In analog television systems the vertical blanking interval can be used for datacasting (to carry digital data), since nothing sent during the VBI is displayed on the screen; various test signals, time codes, closed captioning, teletext, CGMS-A copy-protection indicators, and various data encoded by the XDS protocol (e.g., the content ratings for V-chip use) and other digital data can be sent during this time period.
A school might also provide auxiliary aids and services such as computer-aided transcription services, assistive listening devices for auditorium-based lectures, closed captioned decoders, open and closed captioning, TDDs, and videotext displays.