The Korean Central Television uses these on-screen bugs, starting from the (presumably) 1990s.
1990s (?) -2012
The logo of the Korean Central Television from the 1990s is shown on the top left corner of the screen.
Live coverage of a North Korean military parade from 1992 (APR-25-1992)
KCTV on-screen bug from 1992
N. Korean military parade from 1998
KCTV coverage of a military parade in 2012
The new 3D logo of the Korean Central Television is shown on the top-left of the screen.
KCTV on-screen bug from 2016
KCTV anchor says goodbye to viewers as KCTV ends it's broadcasting day
KCTV on-screen bug before test card
Music video showing in the KCTV before closedown
KCTV closedown notice from May 2015, as KCTV transitions to 16:9 in this time, however clips and schedules are still shown in 4:3 aspect ratio, which results 16:9 broadcasts to be letterboxed