US 2002/0002542 A1 · Information reproducing method and information providing business method

Abstract

A pay information providing service system charges each time the received information is decrypted, while maintaining high security, and enables temporary copying, thereby achieving a time shift function. To realize a tuner section, a display output control section, and a time shift function of shifting the display timing of the received information, there is provided a received information temporary storage section for storing the received information temporarily. To assure the security in realizing the time shift function, making use of the delivery time information sent from the transmission side, there are provided an allowed display time difference setting section, a totalized time shift time computing section, and a decrypting section. Furthermore, to charge properly, there are provided a user authenticating section, a charging information extracting section, and a received information control and charging section.

Claims16

Dependent claims

In a transmitting and receiving system including

the transmission side which, of an information transmitting function and an information receiving function, has at least the former,
the reception side which, of the information transmitting function and receiving function, has at least the latter, and
at least a display function of displaying the information transmitted from said transmission side to the reception side,
an information reproducing method comprising:
the step of causing said transmission side to transmit transmission time information together with the information to be transmitted, and
the step of, when displaying said received information at a later time shifted from the time when the information was received,
causing said reception side to manage at least the length of the time shift time making use of said transmission time information received in a temporally shifted manner and judge whether said received information is displayed in a time-shifted manner.

4 more elements

An information reproducing method of receiving the encrypted content sent from the transmission side and information about the transmission time of the encrypted content and reproducing them, said information reproducing method comprising:

step A of decrypting said encrypted content;
step B of outputting the decrypted content on a display section;
step C of, when a temporary interrupt instruction is given, stopping said decryption and display and causing a temporary storage section to store said encrypted content and transmission time information received;
step D of measuring the length of time since said temporary storage section started to store said encrypted content and said transmission time information;
step E of, when said temporary interrupt instruction is canceled, determining the length of the time difference between newly received transmission time information and the oldest transmission information stored in said temporary storage section;
step F of determining the difference between the length of time measured at said step D and the length of the time difference determined at said step E and judging whether the difference is within a specific value;
step G of, when said difference determined at said step F is within the specific value, decrypting the encrypted content stored in said temporary storage section;
and
step H of, when said difference determined at said step F has exceeded the specific value, outputting a warning signal.

6 more elements

Dependencies are inferred from the claim text.

Information reproducing method and information providing business method

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Information reproducing method and information providing business method

Life of this patent

Abstract

Claims16