David Consuegra designed the "pencil sharpener" logo (source).
1989-1991 (35th anniversary)
In 1983, Inravisión debuted a logo that was very unique at that time, and appears to be heavily inspired by Brazil's Rede Globo.
Alternate logo (Early-1994)
In 1994 as part of the 40th anniversary celebrations of Colombian television, Inravisión returned to the iconic "pencil sharpener" logo due to popular demand and new bumpers were introduced that represents their expansion via satellite through all of Colombia.
In 2002, the iconic logo was modified with rounded points and the wordmark was capitalized.