CHIBA -- An annual technology exhibition that kicked off here Tuesday shows signs of becoming a battleground of sorts for the two next-generation DVD formats threatening to leave consumers with incompatible machines.

At the five-day CEATEC Japan 2005 event being held at the Makuhari Messe convention center, the two sides -- the Toshiba Corp.-led consortium pushing high-definition DVD and the Sony-Matsushita-led group promoting the Blu-ray disc -- have set up large booths to show off their technologies.

With prospects of a compromise on a unified format looking bleak, both teams have been upping the ante in their quest to become the de facto standard.