With signs that say "Digital is coming!" hanging in stores packed with new TV models promising dazzling imagery, Tokyo's bustling electronics shopping district in Akihabara is one place in Japan that's gung-ho about digital television broadcasting that began Monday.

But the buzz has yet to catch on elsewhere.

Digital broadcasting will still reach just parts of three major cities, and potential viewers are estimated at 12 million households. But with reception for some channels poor because of Japan's mountainous and cramped terrain, the tally may be half that -- and actual viewers even fewer, at about 300,000.