Meta data access control system, method thereof, reception device, and transmission device

A technology of access control and metadata, applied in the field of sending devices and receiving devices, can solve problems such as impossible structure and achieve the effect of protecting rights

Inactive Publication Date: 2009-09-09
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, it was impossible to realize such a structure

Method used

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  • Meta data access control system, method thereof, reception device, and transmission device
  • Meta data access control system, method thereof, reception device, and transmission device
  • Meta data access control system, method thereof, reception device, and transmission device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0180] Figure 4 It is a block diagram of a receiving device, a transmitting device, and a metadata access control system composed of them for implementing the metadata access control method according to the first embodiment of the present invention. Figure 4 The metadata access control system shown includes a metadata sending device 1 , a content sending device 3 , a metadata access control information sending device 2 , a distribution path 5 and a receiving device 4 for receiving content. Furthermore, the content transmission device 3 is figure 1 The content provider 1801 has the device, and the metadata transmitting device 1 is figure 1 The metadata provider 1803 has a device. The metadata access control information transmitting device 2 is usually a device held by the content provider 1801, but there are cases where an authentication station or the like is regarded as a third party trusted by the content provider. The distribution path 5 corresponds to the distribution...

Embodiment approach 2

[0256] Next, regarding the second embodiment, use Figure 14 Be explained. Figure 14 is expressed in Figure 4 In the shown metadata access control system, a metadata access control information adding unit 10 is added to the metadata sending device 1, and on the other hand, a metadata verification information adding unit 12, a metadata access control information sending device 2. A block diagram of the metadata access control system after the metadata checking unit 41 is removed. In this metadata access control system, the metadata access control information added by the metadata access control information adding unit 10 is added to the metadata generated by the metadata generating unit 11 and sent to the receiving device 4 .

[0257] Figure 15 It is a data structure diagram schematically showing the data structure of the metadata access control information in this embodiment. In this metadata access control information 19, the synthesized metadata 13 itself is targeted,...

Embodiment approach 3

[0261] Regarding the third embodiment, with Figure 16 Be explained. Figure 16 is expressing Figure 4 In the block diagram showing the metadata access control system shown, a content synthesis unit 33 is added to the content sending device 3, and a content separation unit 48 is added to the receiving device 4 to add the metadata access control information check information. The block diagram of the metadata access control system after the unit 22, the content verification information addition unit 32, the metadata verification unit 41, and the metadata access control information verification unit 42 are removed.

[0262] In the metadata access control system having such a configuration, differences from the first embodiment will be discussed from the transmission device. To the metadata access control information generated by the metadata access control information generation unit 121, the metadata access control information check information is not attached. Furthermore,...

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Abstract

Prevents the provision of metadata that is not permitted by the content-providing meta, and prevents the exploitation of content through metadata that is not the intent of the content-providing meta. The metadata checking unit checks metadata. The content checking unit checks the content and the providing element of the content. The metadata access control information checking unit checks the metadata access control information indicating the relationship between the content accessible to the content and the metadata, and at the same time checks the issuer of the metadata access control information. The metadata judgment unit performs metadata judgment on whether the content provider can trust the publisher of the metadata access control information. If it can be determined that the metadata is reliable, the metadata utilization unit utilizes the metadata.

Description

technical field [0001] The present invention relates to a metadata access control system and method for performing access control and storage control on content by using the metadata for content control, and a receiving device and a transmitting device using them. Background technique [0002] Currently, with the advancement of digital broadcasting, the introduction of digital broadcasting has led to multi-channelization, and viewers can receive many broadcasting contents. On the other hand, with the popularization of ADSL and FTTH high-speed Internet environments in recent years, not only music content distribution such as music, but also services for distributing moving image content using streaming and downloading are also increasing. [0003] As a result, the content that the user can select expands. Therefore, in a world that can be realized by standards such as service broadcasting and TVAnytime, it is possible to add metadata as attribute information of content and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/173
Inventor 冨冈义明竹内良康川口透齐藤裕笠原宏
Owner PANASONIC CORP
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