Superdistribution is an approach to distributing digital products such as software, videos, and recorded music in which the products are made publicly available and distributed in encrypted form instead of being sold in retail outlets or online shops.Such products can be passed freely among users on physical media, over the Internet or other networks, or using mobile technologies such as Bluetooth, IrDA or MMS (Multimedia Messaging Service).Over 280 models of telephones support superdistribution based on OMA DRM; companies such as Vodafone and Deutsche Telekom have been exploring it.
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| - 超流通 (ja)
- Superdistribution (en)
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| - 超流通（ちょうりゅうつう, Superdistribution）とは、1983年に筑波大学の森亮一によって提唱された、複製防止を行わない、デジタル情報（コンテンツ）の純電子的な流通の概念である。当初はソフトウェア・サービス・システム(Software Service System) と呼んでいた。 超流通は、次のように定義されている。 1.
* 情報利用者はデジタル情報をほとんどまたは全く無料 （媒体、手数料程度）で入手することができ、情報提供者（メーカまたは個人）が 指定した条件（次項）の下でいつでも利用できる。 2.
* 情報提供者はその情報の利用を許可する条件 （通常は料金の支払い）を指定できる。 3.
* 情報提供者が指定する以外の改変は防止される。 4.
* 以上の各項のために面倒な手数を必要としない。 利用者間の複製を正当な流通経路として利用できることから、P2Pとの親和性は高い。 (ja)
- Superdistribution is an approach to distributing digital products such as software, videos, and recorded music in which the products are made publicly available and distributed in encrypted form instead of being sold in retail outlets or online shops.Such products can be passed freely among users on physical media, over the Internet or other networks, or using mobile technologies such as Bluetooth, IrDA or MMS (Multimedia Messaging Service).Over 280 models of telephones support superdistribution based on OMA DRM; companies such as Vodafone and Deutsche Telekom have been exploring it. (en)
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| - Superdistribution is an approach to distributing digital products such as software, videos, and recorded music in which the products are made publicly available and distributed in encrypted form instead of being sold in retail outlets or online shops.Such products can be passed freely among users on physical media, over the Internet or other networks, or using mobile technologies such as Bluetooth, IrDA or MMS (Multimedia Messaging Service).Over 280 models of telephones support superdistribution based on OMA DRM; companies such as Vodafone and Deutsche Telekom have been exploring it. Superdistribution allows and indeed encourages digital productsto be distributed freely in encrypted form, even as the product's owner retains control over the ability to use and modify the product.Superdistribution is a highly efficient means of distribution because distribution is not impeded by any barriers and anyone can become a distributor.A product made available through superdistribution may be free, in which case the user can use it immediatelyand without restriction, or restricted by means of Digital Rights Management (DRM). Restricted products generally require a license that the user must purchase either immediately orafter a trial period (in the case of so-called demoware). Superdistribution was invented in 1983 by the Japanese engineerRyoichi Moriand patented by him in 1990. Mori's prototype, which he called the SoftwareService System (SSS), took the form of apeer-to-peer-architecture with the following components:
* a cryptographic wrapper for digital products that cannot be removed and remains in place whenever the product is copied.
* a digital rights management system for tracking usage of the product and assuring that any usage of the product or access to its code conforms to the terms set by the product's owner.
* an arrangement for secure payments from the product's users to its owner. (en)
- 超流通（ちょうりゅうつう, Superdistribution）とは、1983年に筑波大学の森亮一によって提唱された、複製防止を行わない、デジタル情報（コンテンツ）の純電子的な流通の概念である。当初はソフトウェア・サービス・システム(Software Service System) と呼んでいた。 超流通は、次のように定義されている。 1.
* 情報利用者はデジタル情報をほとんどまたは全く無料 （媒体、手数料程度）で入手することができ、情報提供者（メーカまたは個人）が 指定した条件（次項）の下でいつでも利用できる。 2.
* 情報提供者はその情報の利用を許可する条件 （通常は料金の支払い）を指定できる。 3.
* 情報提供者が指定する以外の改変は防止される。 4.
* 以上の各項のために面倒な手数を必要としない。 利用者間の複製を正当な流通経路として利用できることから、P2Pとの親和性は高い。 (ja)
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