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    • 21. 发明授权
    • Lower-power standby mode for consumer electronics
    • 消费类电子产品的低功耗待机模式
    • US07546618B2
    • 2009-06-09
    • US10880777
    • 2004-06-30
    • Kinney C. Bacon
    • Kinney C. Bacon
    • H04N7/173H04N7/16H04N7/167G06F1/32
    • H04N21/42615H04N7/163H04N7/1675H04N21/44236H04N21/4432H04N21/4623
    • A conditional access device is provided. The conditional access device typically includes conditional access decryption, interface, timing and control logic. The conditional access decryption logic decrypts an incoming signal for use in a consumer electronics device in accordance with previously received entitlement management messages. The interface logic receives a control signal including an entitlement management message window from a headend control system through a receiver in the consumer electronics device. The timing logic asserts an awake signal responsive to the entitlement management message window becoming active. The control logic sends a request to the consumer electronic device to activate a receiver coupled to the headend control system in expectation of receiving an entitlement management message via the control signal in response to assertion of the awake signal. The control logic also communicates the entitlement management message to the conditional access decryption logic. Other systems and method are also provided.
    • 提供条件访问设备。 条件访问设备通常包括条件访问解密,接口,定时和控制逻辑。 条件访问解密逻辑根据先前接收的授权管理消息来解密用于消费电子设备中的输入信号。 接口逻辑通过消费电子设备中的接收器从头端控制系统接收包括授权管理消息窗口的控制信号。 定时逻辑声明响应于授权管理消息窗口变为活动的唤醒信号。 控制逻辑向消费者电子设备发送请求以激活耦合到头端控制系统的接收器,期望响应于唤醒信号的断言经由控制信号接收授权管理消息。 控制逻辑还将授权管理消息传送到条件访问解密逻辑。 还提供了其他系统和方法。
    • 23. 发明授权
    • System for broadband descrambling of sync suppressed television signals
    • 用于同步抑制电视信号的宽带解扰系统
    • US5319709A
    • 1994-06-07
    • US715080
    • 1991-06-13
    • James E. RaiserJulius B. BagleyMichael T. HayashiMichael P. HarneyJames O. FarmerKinney C. BaconAlex M. Cook, Jr.
    • James E. RaiserJulius B. BagleyMichael T. HayashiMichael P. HarneyJames O. FarmerKinney C. BaconAlex M. Cook, Jr.
    • H04N7/171H04N7/167
    • H04N7/1713
    • A television system having sync suppression scrambling and descrambling which includes in band and out of band signaling methods. The in band signaling method modulates the IF sound carrier of a premium video channel with timing and data pulses while the out of band signaling method modulates the previously modulated IF sound on a separate carrier onto a separate out of band data carrier. The in band signaling method uses a descrambler which tunes a channel before demodulating the timing and data pulses from the sound carrier while the out of band signaling method tunes a selected data carrier to demodulate the timing and data pulses. In both methods, the timing pulses are used to restore the levels of the synchronization pulses in the sync suppressed video signal, and thus descramble the signal, while the data pulses are used for addressable messaging to the descrambler including authorization. The out of band descrambler provides broadband sync restoration for a particular channel and thus does not need a broadband tuner for the video signal.
    • 具有同步抑制加扰和解扰的电视系统,其包括频带和带外信令方法。 带内信令方法利用定时和数据脉冲调制高级视频信道的IF声音载波,而带外信令方法将单独载波上的先前调制的IF声音调制到单独的带外数据载体上。 带内信令方法使用解扰器,其在解调来自声载波的定时和数据脉冲之前调谐信道,而带外信令方法调谐所选择的数据载波以解调定时和数据脉冲。 在两种方法中,定时脉冲用于恢复同步抑制的视频信号中的同步脉冲的电平,并且因此使信号解扰,同时数据脉冲用于包括授权的解扰器的可寻址消息传递。 带外解扰器为特定信道提供宽带同步恢复,因此不需要用于视频信号的宽带调谐器。