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    • 2. 发明申请
    • EXTENDING THE DRM REALM TO EXTERNAL DEVICES
    • 将DRM现代扩展到外部设备
    • US20090313471A1
    • 2009-12-17
    • US12300435
    • 2007-05-08
    • Ulf BjörkengrenPer StáhlMagnus L. Olsson
    • Ulf BjörkengrenPer StáhlMagnus L. Olsson
    • H04L9/32H04L9/08
    • G06F21/10G06F2221/2129
    • Disclosed is a method and a system for rendering content on external devices securely. The method comprises setting up a communication channel between a proxy rendering server of a mobile device and an external rendering server of an external device, authenticating at least the external rendering server and upon successful authentication transferring a key from the proxy rendering server to the external rendering server, transferring the content encrypted with the transferred key from the proxy rendering server to the external rendering server for rendering the content, wherein the rendering of the content is performed in one of two modes, either in a preprocessing mode or in a non-preprocessing mode, and wherein a DRM agent is only present in the mobile device.
    • 公开了一种用于在外部设备上安全地呈现内容的方法和系统。 该方法包括在移动设备的代理呈现服务器和外部设备的外部呈现服务器之间设置通信信道,至少验证外部呈现服务器,并且在成功认证之后将密钥从代理呈现服务器传送到外部呈现 将所传送的密钥加密的内容从代理呈现服务器传送到外部呈现服务器,以呈现内容,其中以预处理模式或非预处理的两种模式之一执行内容呈现 模式,并且其中DRM代理仅存在于移动设备中。
    • 3. 发明授权
    • System and method for digital rights management of electronic content
    • 电子内容数字版权管理系统与方法
    • US07617158B2
    • 2009-11-10
    • US10926689
    • 2004-08-26
    • Ulf BjörkengrenPer Ståhl
    • Ulf BjörkengrenPer Ståhl
    • G06Q99/00
    • G06Q20/382G06Q20/3829H04L9/0825H04L2209/603
    • Digital rights management is described involving a device, a content issuer, and a rights issuer. A content encryption key (CEK) is encrypted using a public key associated with the device to produce an encrypted CEK. The encrypted CEK is encrypted using an issuer encryption key to produce a twice encrypted CEK. The twice encrypted CEK is encrypted using the public key to produce a ciphertext included in a rights object. The rights object is available to the device for decrypting digital content associated with the content issuer. The device can then decrypt the rights object ciphertext using its private key to produce a decrypted rights object ciphertext and decrypt the decrypted rights object ciphertext using an issuer decryption key received from the content issuer to produce an encrypted CEK. The encrypted CEK is decrypted using the private key to obtain the CEK, which is then available for decrypting digital content.
    • 描述涉及设备,内容发行者和权利发行者的数字版权管理。 使用与该设备相关联的公开密钥来加密内容加密密钥(CEK)以产生加密的CEK。 使用发行者加密密钥对加密的CEK进行加密,以产生两次加密的CEK。 使用公钥加密两次加密的CEK,以产生包含在权限对象中的密文。 权利对象可用于设备用于解密与内容发行者相关联的数字内容。 然后,设备可以使用其私钥来解密权限对象密文,以产生解密的权限对象密文,并使用从内容发行者接收到的发行者解密密钥对解密的权限对象密文进行解密,以产生加密的CEK。 使用私钥对加密的CEK进行解密以获得CEK,该CEK可用于解密数字内容。
    • 7. 发明授权
    • Input device and method of entering data into an electronic apparatus
    • 将数据输入电子设备的输入装置和方法
    • US06295441B1
    • 2001-09-25
    • US09296008
    • 1999-04-21
    • Ulf Björkengren
    • Ulf Björkengren
    • H04Q732
    • H04M1/274558G06F3/0485H04M1/0214H04M1/0243H04M1/274525
    • An input device for an electronic device such as a mobile phone includes an analog input device for scanning through an input space of records and a digital input device for selecting a current record presented on a display. The analog input device is a flip pivotably arranged by an attachment device on a housing of the electronic device. The attachment device is provided with a rotational sensor device connected to a processing device incorporated in the housing. An angle between the flip and the housing corresponds to a sensor value, translated and interpreted by the processing device, to show a particular record on the display.
    • 用于诸如移动电话的电子设备的输入设备包括用于扫描记录的输入空间的模拟输入设备和用于选择呈现在显示器上的当前记录的数字输入设备。 模拟输入设备是通过电子设备的壳体上的附接装置可枢转地布置的翻盖。 连接装置设置有连接到并入壳体中的处理装置的旋转传感器装置。 翻盖和壳体之间的角度对应于由处理装置翻译和解释的传感器值,以在显示器上显示特定的记录。