Marriage Made In Cyberspace

A computer catalog company, looking for new ways to distribute software, has improved a method of sending computer data through TV signals.

The development announced Thursday raises the prospect that a TV station can cost-effectively wed regular TV programming with extra data that would arrive in the home computer.

For instance, an advertiser could send out a coupon at the moment a commercial is on.

En Technology, a Keene, N.H., company, has created an inexpensive, accessory card for personal computers to receive the data directly instead of through special receivers attached to a TV.

The card will cost less than $100 and be available in stores this fall.