Abstract: A receiving terminal device which provides viewers with broadcasting radio waves from broadcasting stations as programs and in which, when a program switching is executed while a first program is being provided and a program is switched to a second program, the second program is provided and video recording of the first program is started, and when the program is switched back to the first program after the program is switched to the second program, the recorded first program is provided. Then, the receiving terminal device, when the first program is selected again, executes catch-up reproduction of the recorded first program in the manner that the position of recording and reproducing the first program catch up with a position in which the first program is being broadcast by the broadcasting station. Thus, even in case that a switching of a program selection is executed, a broadcasting service without failure of program contents viewing can be realized.

Abstract: A receiving terminal device which provides viewers with broadcasting radio waves from broadcasting stations as programs and in which, when a program switching is executed while a first program is being provided and a program is switched to a second program, the second program is provided and video recording of the first program is started, and when the program is switched back to the first program after the program is switched to the second program, the recorded first program is provided. Then, the receiving terminal device, when the first program is selected again, executes catch-up reproduction of the recorded first program in the manner that the position of recording and reproducing the first program catch up with a position in which the first program is being broadcast by the broadcasting station. Thus, even in case that a switching of a program selection is executed, a broadcasting service without failure of program contents viewing can be realized.

Abstract: The present invention provides two branches of a base station transmitter and a base station receiver, respectively, and inserts a delay circuit for ensuring a delay time difference between D and U waves required to obtain the best bit error rate for a DSK system, BPSK-RZ system, QPSK-RZ system or the like, into each system of the transmitter and the receiver, respectively, or into either the transmitter or the receiver of each system, thereby efficiently improving the bit error rate.