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Broadcasting information right protective apparatus and method

A technology of protection device and playback device, applied in encoding/decoding device, selective content distribution, key distribution, and can solve the problems of illegal broadcasting of content, illegal viewing and listening, etc.

Inactive Publication Date: 2008-01-09
FUJITSU LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For receivers with this recording function, it is not enough to rely solely on preventing unauthorized reception of broadcast signals as in the past, and how to prevent unauthorized viewing of recorded broadcast content has also become a problem
[0010] For example, when an obligation to watch advertisements is attached to the broadcast content, there is a problem of illegally viewing the recorded broadcast content by skipping the advertisement portion.
In addition, when limiting the period during which the broadcast content can be played, there is also a problem of illegally viewing the broadcast content whose playback period has expired by changing the time information of the receiver to the past time.

Method used

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  • Broadcasting information right protective apparatus and method
  • Broadcasting information right protective apparatus and method
  • Broadcasting information right protective apparatus and method

Examples

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Embodiment Construction

[0029] Hereinafter, preferred embodiments of the broadcast content right protection device and broadcast content right protection method of the present invention will be described in detail with reference to the accompanying drawings. In addition, in this embodiment, the case where the present invention is applied to a receiver for terrestrial digital broadcasting will be mainly described.

[0030] First, the receiver of this embodiment will be described. FIG. 1 is a functional block diagram showing the configuration of a receiver according to this embodiment. As shown in the figure, the receiver 100 is a device for receiving broadcast signals (broadcast contents) such as images and music broadcast by terrestrial digital broadcasting through an antenna 10, and includes a tuner 110, an MPEG-TS packet extraction unit 120, and a MULTI2 decoding unit. 130 . MPEG video decoding unit 140 , MPEG audio decoding unit 150 , main processor 160 , main memory 170 , HDD 180 , and rights pr...

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Abstract

PROBLEM TO BE SOLVED: To provide a broadcast content right protection apparatus and a broadcast content right protection program for preventing broadcast contents from being illegitimately viewed by a reproducing apparatus for reproducing encrypted broadcast contents recorded in a storage device. ŽSOLUTION: The broadcast content right protection apparatus for generating a scramble key Ka for decrypting broadcast contents from an ECM packet included in the broadcast contents at a prescribed time interval is characterized by including: a serial number discrimination section for detecting illegitimate commercial skip and trick play reproduction; a commercial flag discrimination section for detecting illegitimate commercial operations; a view time discrimination section for detecting content viewing in excess of a time limit; a permission information setting section for detecting the use of illegitimate permission information; and a scramble key output control section for stopping an output of the scramble key Ks when any illegitimate act is detected. Ž

Description

technical field [0001] The present invention relates to a broadcast content right protection device and a broadcast content right protection method, which are used in a playback device that plays broadcast content encrypted and recorded in a storage device, based on decoding information contained in the broadcast content at predetermined time intervals Generating a decoding key for decoding broadcast content; in particular, it relates to a broadcast content right protection device and a broadcast content right protection method capable of preventing unauthorized viewing of broadcast content recorded in a recording device. Background technique [0002] Non-Patent Document 1: NIKKEI NEW MEDIA First Issue "Digital Broadcasting Guide Book 2001 (Digital Broadcast Guide 2001)", Nikkei BP, October 30, 2000, pp. 44-57. [0003] From December 1, 2000, BS (Broadcasting Satellite: Broadcasting Satellite) digital broadcasting began as satellite broadcasting, and a free and paid broadcas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B20/10G06Q10/00G06Q30/02G06Q30/06G06Q50/00G06Q50/10G09C1/00H04L9/08H04N7/167H04N21/442H04N21/4623
Inventor 小桧山清之长谷部高行真下诚一中西康浩
Owner FUJITSU LTD
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