CHARGING SYSTEM IN CHARGEABLE TELEVISION BROADCAST OF TWO-WAY CATV SYSTEM

摘要

PURPOSE:To easily attain charging without data communication by polling by providing a TV receiver having functions sending a status carrier of an intrinsic frequency at the time of viewing a charged channel and providing a selection level measuring instrument as a center unit. CONSTITUTION:When a channel of a charged TV program stored in advance in a storage device 3 of a TV receiver 1 is selected, a status carrier having an intrinsic frequency to each TV receiver 1 from an oscillator 2 is sent to a CATV transmission line 7. The frequency of the status carrier is swept by a selection level measuring instrument 4 by a command of a central processing unit 5 to measure the level of each frequency. Thus, the chargeable television viewing state of each TV receiver 1 is judged by the central processing unit 5 to apply charging.