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    • 5. 发明申请
    • MULTIPLE AUTHENTICATION SESSIONS FOR CONTENT PROTECTION
    • 内容保护的多个认证会议
    • WO0233887A3
    • 2003-10-09
    • PCT/EP0111722
    • 2001-10-10
    • KONINKL PHILIPS ELECTRONICS NV
    • LINNARTZ JOHAN P M G
    • G06F21/20G09C1/00H04L9/08H04L9/32H04Q7/38
    • H04L9/3226H04L2209/605
    • The invention is in the field of consumer devices. The term "consumer device" is used to indicate various electrical, electronic and mechanical devices, which can be used in the work place and in and around home. The invention relates to a method for secure data communication between consumer devices. Methods in which the user of the devices chooses which device he trusts and which device must be authenticated are known. These methods are not suitable in the situation in which the user can not be trusted. The method according to the invention therefore comprises the following steps: a) activating a data communication link between the devices, b) transmitting data between the devices for performing an authentication session (3) for authenticating the consumer devices (1,2), wherein the authentication session (3) generates a first key (5), and c) transmitting data between the devices for performing another authentication session (4) for authenticating the consumer devices (1,2), wherein the authentication session (4) generates a second key (6). The invention further relates to a consumer device and a signal.
    • 本发明在消费者设备领域。 术语“消费者装置”用于表示各种电气,电子和机械装置,其可以在工作场所和家庭中和周围使用。 本发明涉及消费者设备之间的安全数据通信的方法。 已知设备的用户选择他信任的设备以及哪个设备必须被认证的方法。 这些方法不适合用户无法信任的情况。 因此,根据本发明的方法包括以下步骤:a)激活设备之间的数据通信链路,b)在用于执行用于认证消费者设备的认证会话(3)的设备之间传送数据(1,2),其中 所述认证会话(3)生成第一密钥(5),以及c)在所述设备之间传送用于执行用于认证所述用户设备(1,2)的认证会话(4)的数据,其中所述认证会话(4) 第二键(6)。 本发明还涉及消费者装置和信号。
    • 10. 发明申请
    • CHANNEL ESTIMATION IN MULTICARRIER TRANSMISSION SYSTEMS
    • 多媒体传输系统中的信道估计
    • WO02067526A3
    • 2002-12-05
    • PCT/IB0200128
    • 2002-01-16
    • KONINKL PHILIPS ELECTRONICS NV
    • GOROKHOV ALEXEILINNARTZ JOHAN P M G
    • H04J11/00H04J13/04H04L25/02H04L27/26
    • H04L25/03821H04L25/0204H04L25/022H04L25/0236H04L25/0244H04L27/2647
    • Described is a transmission system for transmitting a multicarrier signal from a transmitter (10) to a receiver (20). The multicarrier signal comprises a plurality of subcarriers. The receiver (20) comprises a channel estimator (28) for estimating amplitudes of the subcarriers and for estimating time derivatives of the amplitudes. The receiver (20) further comprises an equalizer (24) for canceling intercarrier interference included in the received multicarrier signal in dependence on the estimated amplitudes and derivatives (29). The channel estimator (28) comprises a reduced complexity filter for deriving vectors of the estimated amplitudes and derivatives (29) from vectors of received symbols (23) and vectors of estimated symbols (27). The reduced complexity filter may be arranged for exploiting an amplitude correlation between the amplitudes of different subcarriers and/or for exploiting a derivative correlation between the derivatives of different subcarriers.
    • 描述了一种用于从发射机(10)向接收机(20)发送多载波信号的传输系统。 多载波信号包括多个子载波。 接收器(20)包括用于估计子载波的振幅并估计时间的幅度的导数的信道估计器(28)。 接收器(20)还包括均衡器(24),用于根据所估计的幅度和导数(29)来消除包含在所接收的多载波信号中的载波间干扰。 信道估计器(28)包括用于从接收符号(23)的向量和估计符号(27)的向量导出估计的幅度和导数(29)的向量的简化复杂度滤波器。 降低的复杂度滤波器可以被布置为利用不同子载波的幅度之间的振幅相关性和/或用于利用不同子载波的导数之间的导数相关。