The No. 1 satellite-TV provider is testing its own version of an on-demand movies and television service that it plans to launch in the second quarter. DirecTV On Demand uses a combination of DVR broadband connections in a Sky Active look-a-like service. DirecTV’s satellites will automatically transmit a limited number of popular movie titles to customers’ digital video recorders, where they will be stored for viewers to order whenever they want. Viewers will be able to order other titles by streaming them from the Web through a high-speed Internet connection on the DirecTV set-top box. DirecTV says that about half of its customers currently have high-speed Internet connections.