625-line television system
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625-lines is a
standard-definition television Standard-definition television (SDTV, SD, often shortened to standard definition) is a television system which uses a resolution that is not considered to be either high or enhanced definition. "Standard" refers to it being the prevailing sp ...
resolution used mainly in the context of analog systems. It was first demonstrated by Mark Iosifovich Krivosheev in 1948.


Analog broadcast television standards

The following
International Telecommunication Union The International Telecommunication Union is a specialized agency of the United Nations responsible for many matters related to information and communication technologies. It was established on 17 May 1865 as the International Telegraph Unio ...
standards Standard may refer to: Symbols * Colours, standards and guidons, kinds of military signs * Standard (emblem), a type of a large symbol or emblem used for identification Norms, conventions or requirements * Standard (metrology), an object t ...
use 625-lines: *
CCIR System B CCIR System B (originally known as the "Gerber Standard") was the 625-line VHF analog broadcast television system which at its peak was the system used in most countries. It's usually associated with CCIR System G for UHF broadcasts. It is most ...
* CCIR System D *
CCIR System G CCIR System G is an analog broadcast television system used in many countries. There are several systems in use and letter G is assigned for the European UHF system which is also used in the majority of Asian and African countries. (However some ...
*
CCIR System H CCIR System H is an analog broadcast television system primarily used in Belgium, the Balkans and Malta on the UHF bands. Specifications Some of the important specs are listed below.Reference Data for Radio Engineers, ITT Howard W.Sams Co., N ...
*
CCIR System I CCIR System I is an analogue broadcast television system. It was first used in the Republic of Ireland starting in 1962 as the 625-line broadcasting standard to be used on VHF Band I and Band III, sharing Band III with 405-line System A signals ...
*
CCIR System K CCIR System K is an analog broadcast television system used in countries that adopted CCIR System D on VHF, and identical to it in most respects.https://www.itu.int/dms_pub/itu-r/opb/rep/R-REP-BT.624-4-1990-PDF-E.pdf Used only for UHF frequencie ...
*
CCIR System L CCIR System L is an analog broadcast television system used in France and Luxemburg. It was the last system to use positive video modulation and AM sound. Initially adopted in the 1970s and associated with the SECAM color system (SECAM-L), it ...


Analog color television systems

The following
analog television Analog television is the original television technology that uses analog signals to transmit video and audio. In an analog television broadcast, the brightness, colors and sound are represented by amplitude, phase and frequency of an analog ...
color systems were used in conjunction with the 625-line standards listed previously: *
PAL Phase Alternating Line (PAL) is a colour encoding system for analogue television. It was one of three major analogue colour television standards, the others being NTSC and SECAM. In most countries it was broadcast at 625 lines, 50 fields (25 ...
analog color television system *
SECAM SECAM, also written SÉCAM (, ''Séquentiel de couleur à mémoire'', French for ''color sequential with memory''), is an analog color television system that was used in France, some parts of Europe and Africa, and Russia. It was one of th ...
analog color television system


Digital video

625-lines is sometimes mentioned when digitizing analog video, or when outputting digital video in a standard-definition analog compatible format. *
576i 576i is a standard-definition digital video mode, originally used for digitizing analog television in most countries of the world where the utility frequency for electric power distribution is 50 Hz. Because of its close association wit ...
, a
standard-definition television Standard-definition television (SDTV, SD, often shortened to standard definition) is a television system which uses a resolution that is not considered to be either high or enhanced definition. "Standard" refers to it being the prevailing sp ...
digital video mode *
PAL region The PAL region is a television publication territory that covers most of Europe and Africa, alongside parts of Asia, South America and Oceania. It is named PAL because of the PAL (Phase Alternating Line) television standard traditionally used i ...
, a common term regarding video games, meaning regions where the 625-lines PAL standard was traditionally used. * PAL/SECAM DVD * PAL/SECAM Video CD *
Rec. 601 ITU-R Recommendation BT.601, more commonly known by the abbreviations Rec. 601 or BT.601 (or its former name CCIR 601) is a standard originally issued in 1982 by the CCIR (an organization, which has since been renamed as the Internatio ...
, a 1982 standard for encoding interlaced analog video signals in digital video form. * D-1 (Sony), a 1986 SMPTE digital recording video standard


See also

*
525 lines 525-lines is a standard-definition television resolution used mainly in the context of analog systems. Analog broadcast television standards The following International Telecommunication Union standards use 525-lines: * CCIR System J * CCIR Sys ...
*
576p 576p is the shorthand name for a video display resolution. The ''p'' stands for progressive scan, i.e. non-interlaced, the ''576'' for a vertical resolution of 576 pixels (the frame rate can be given explicitly after the letter). Usually it corr ...


References

Television technology {{tv-tech-stub