CCIR System B (originally known as the "Gerber Standard"[1][2][3][4]) was the 625-line VHF analog broadcast television system which at its peak was adopted by more than one hundred countries, either with PAL or SECAM colour.[5] It is usually associated with CCIR System G for UHF broadcasts.
System B was the first internationally accepted 625-line broadcasting standard in the world. A first 625-line system with a 8 MHz channel bandwidth was proposed at the CCIR Conference in Stockholm in July 1948 (based on 1946-48 studies in the Soviet Union[6] by Mark Krivosheev[7][8][9][10][11][12][13]).[3] At a CCIR Geneva meeting in July 1950 Dr. Gerber (a Swiss engineer), proposed a modified 625-lines system with a 7 MHz channel bandwidth (based on work by Telefunken and Walter Bruch), with the support of Belgium, Denmark, Italy, Netherlands, Sweden, Switzerland.[6] Known as the "Gerber-norm", it was eventually approved along with four other broadcast standards on the next formal CCIR meeting in May 1951 in Geneva.[6][14]
It is mostly replaced across Western Europe, former Yugoslavia, parts of Asia and Africa by digital broadcasting.
- ^ "625-Line Television Broadcast Standards - UK Vintage Radio Repair and Restoration Discussion Forum".
- ^ "405 Alive - FAQ - 405-Line Television in History". www.bvws.org.uk.
- ^ a b "The CCIR, the standards and the TV sets' market in France (1948-1985)" (PDF).
- ^ Magnetic Recording Handbook. Springer Science & Business Media. December 6, 2012. ISBN 9789401094689 – via Google Books.
- ^ "Weltweite Fernsehsysteme (NTSC, PAL und SECAM)". www.paradiso-design.net. 2005. Retrieved 2023-03-06.[permanent dead link]
- ^ a b c "Piet's Home-built Television". Maximus R&D.
- ^ ""M.I. Krivosheev: Participation in the development of mass TV broadcasting" - an exhibition at Ostankino TV Center".
- ^ "Mark Iosifovich Krivosheev (1922-2018)".
- ^ On the beginning of broadcast in 625-lines 60 year s ago, 625 magazine (in Russian). Archived 2016-03-04 at the Wayback Machine
- ^ M.I. Krivocheev – an engineer's engineer, EBU's technical review.
- ^ IN THE VANGUARD OF TELEVISION BROADCASTING
- ^ Observer, Reflective (2021-12-23). "Where did 625-line TV come from?". Medium. Retrieved 2021-12-31.
- ^ "625-Line Television System Origins - UK Vintage Radio Repair and Restoration Discussion Forum". www.vintage-radio.net. Retrieved 2021-12-31.
- ^ "World map showing the different line standards for black and white television after the CCIR Plenary Conference in Stockholm in 1952. Source: Rindfleisch, Hans, 'Der gegenwärtige Ausbau des Fernsehrundfunks im In-und Ausland', Rundfunktechnische Mitteilungen, 3, 1959, p.220".