CHARGED TELEVISION RECEIVER

摘要

PURPOSE:To prevent no-charge interception by allowing a reception terminal device channel changeover switch to pass through a conventional broadcast television signal to a reception terminal device at general broadcast station selection and pass through a charged television signal to a built-in converter at charged television signal station selection. CONSTITUTION:A charged television signal arranged adjacently in superhigh band from the center, a conventional broadcast television signal received by an antenna, and a carrier signal obtained by modulating a data signal broadcast from a CPU are mixed and amplified by a head end of a reception terminal device so as to receive a signal transmitted to a transmission line comprising of coaxial cable. The television signal and the data carrier signal are inputted to an input terminal 11 of the reception terminal device and the data carrier is demodulated by an MODEM13 from a branch device 12 and fed to a control section 14. The television signal is inputted to a relay switch 15 via the branch device 12. A switch 15 is thrown to the position (a) at the channel selection of a conventional broadcast television and the switch 15 is thrown to the position (b) at the channel selection of charged television.