JPS6412783A - One way subscription broadcasting system - Google Patents

Abstract

PURPOSE:To know the number of viewers before broadcasting to a special program by guiding a reserving system to a payment charge system. CONSTITUTION:In a center 1, a parallel input/output (PIO) circuit 14 instructs a VTR control part 24 to operate any one of VTRs 25 and a serial input/output circuit (SIO) circuit 16 conducts out data for communicating with respective subscriber terminals 32 and this data is transmitted to the terminal 32. A viewing request to a special program from the viewer, the amount of charge paid are stored in a magnetic disk 19 together with the characteristic address of the terminal from a keyboard 17. In the terminal 32, received data is inputted to the SIO circuit 326 and processed in a CPU 323. In an accounting register 337, the amount of charge paid transmitted from the center according to the charge payment of the subscriber is set, special program receiving permission data is maintained in a RAM 35, the viewing request is executed to the center and the permission data from the center is set to the RAM 325. A descramble control circuit 320 controls whether a descrambling is executed or not according to the permission data and the contents of the register 337.