Call of Duty is published by an American publisher of video games.
== Display standards ===== Digital television ===Digital television broadcasts use the MPEG-2 and other video coding formats and include:ATSC  United States, Canada, Mexico, KoreaDigital Video Broadcasting (DVB)  EuropeISDB  JapanISDB-Tb  uses the MPEG-4 video coding format  Brazil, ArgentinaDigital Multimedia Broadcasting (DMB)  Korea=== Analog television ===Analog television broadcast standards include:Field-sequential color system (FCS)  US, Russia; obsoleteMultiplexed Analogue Components (MAC)  Europe; obsoleteMultiple sub-Nyquist sampling encoding (MUSE)  JapanNTSC  United States, Canada, JapanEDTV-II "Clear-Vision" - NTSC extension, JapanPAL   Europe, Asia, OceaniaPAL-M  PAL variation, BrazilPAL-N  PAL variation, Argentina, Paraguay and UruguayPALplus  PAL extension, EuropeRS-343 (military)SECAM  France, former Soviet Union, Central AfricaCCIR System ACCIR System BCCIR System GCCIR System HCCIR System ICCIR System MAn analog video format consists of more information than the visible content of the frame
 All formats listed were sold to and used by broadcasters, video producers or consumers; or were important historically

