a method for reserving and playing digital television programs , a set top box , and a dtv playing system are provided in the embodiments of the present invention . the method provides for the generation of a prompt indicating the reservation of multiple dtv programs to be played concurrently at , or prior to , arrival of the time of playing the reserved dtv programs , and playing one dtv program that is selected from the multiple reserved dtv programs when the time of playing the reserved dtv program has arrived .