Soon, thanks to Sony Corp, you’ll not only be able to drive people mad with the hissing from your Walkman headphones, you’ll be able to bump into them as well. After the personal stereo, the company has now come up with the personal movie-player, which will come with an individual movie display screen mounted in the head-set. The PLM-50 Glasstron, to be introduced in Japan on June 21, will play back images from a videocassette recorder or a video compact disk player, and will include stereo earphones. The headset measures 7.9 by 4.7 by 10.2, weighs 11 oz and will cost $814. By changing the degree of transparency of the liquid crystal shutter, viewers can either gain the impression of being in a cinema or of watching a screen hanging in mid- air. A D-V500 portable video compact disk player that can be used with the new headset costs $333 and runs for four hours with a Lithium-ion rechargeable battery.