CCIR System B
625-line analog television transmission format / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about CCIR System B?
Summarize this article for a 10 year old
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.