| 摘要 |
PCT No. PCT/AU89/00423 Sec. 371 Date Sep. 22, 1993 Sec. 102(e) Date Sep. 22, 1993 PCT Filed Sep. 29, 1989 PCT Pub. No. WO90/03706 PCT Pub. Date Apr. 5, 1990.Television programs interupted by non-program material, such as commercials, are broadcasted by the disclosed system over standard TV channels. An ecrypted indicating signal is also broadcasted by the system such that the ecrypted signal can be received and decrypted at authorized viewer locations to provide program identifying information. Each of the authorized viewer locations includes a credit store for storing data representing an available credit. Each authorized location also includes means for editing the viewing/recording of received program signals based on the provided program identifying information when the data in said credit store indicates that credit is available. The available credit represented by the stored data is consumed in response to the usage the means for editing program signals.
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