What is "dharmottara"

Dharmottara (Tibetan: chos mchog) was an 8th-century Buddhist author of several important works on pramana (valid cognition, epistemology), including commentaries on the writings of Dharmakirti. Only one of his works survives in the original Sanskrit, the Nyāyabinduṭīkā, while other survive in Tibetan translation.