A breakthrough in contract talks has been reached between Hollywood studios and striking writers and could lead to a tentative deal as early as next week, a person close to the ongoing negotiations said Saturday. The two sides breached the gap Friday on the thorniest issues, those concerning compensation for projects distributed via the Internet. Another person said that significant progress had been made and a deal might be announced within a week. The people did not provide specific details on the possible agreement. Major points of contention include how much and when writers are paid for projects delivered on-line after they've been broadcast on TV.