公开(公告)号：US20080019706A1

公开(公告)日：2008-01-24

申请号：US11838165

申请日：2007-08-13

申请人： Frank Levinson ,  Gerald Sage ,  Arthur Lawson ,  Willem Mostert

发明人： Frank Levinson ,  Gerald Sage ,  Arthur Lawson ,  Willem Mostert

IPC分类号： H04B10/06

CPC分类号： H04N21/615 ,  H04N7/17309 ,  H04N7/22 ,  H04N21/6168

摘要： An optical signal return path system includes a transmitter having a sample clock generator for generating a sample clock and an RF signal receiver for receiving and converting an analog RF data signal into a first data stream of digitized RF data samples at a rate determined by the sample clock. Supplemental channel circuitry provides a second data stream. A multiplexor receives and combines the first data stream and second data stream, and an optical transmitter converting the combined data stream into a serialized optical data signal for transmission over an optical fiber. The second data stream may contain maintenance data reflecting an operational state of the transmitter. A receiver receives the optical data signal and recovers therefrom a digital data stream and an associated first clock having an associated first clock rate. The data stream is stored in a memory device at the first clock rate. A clock generator generates a second clock having an associated second clock rate that is adjusted in accordance with a clock control signal. A control circuit reads data from the memory device at a rate corresponding to the second clock rate and generates a fullness signal that indicates whether the memory device is more full than a predefined threshold fullness level. A clock speed adjusting circuit generates the clock control signal in accordance with the fullness signal.

摘要翻译： 光信号返回路径系统包括具有用于产生采样时钟的采样时钟发生器和RF信号接收器的发射器，RF信号接收器以模拟RF数据信号的速率接收数字化RF数据样本的第一数据流， 时钟。 补充信道电路提供第二数据流。 多路复用器接收并组合第一数据流和第二数据流，以及光发送器，将组合的数据流转换成串行化的光数据信号，以在光纤上传输。 第二数据流可以包含反映发射机的操作状态的维护数据。 接收器接收光学数据信号并从其中恢复数字数据流和相关联的第一时钟具有相关联的第一时钟速率。 数据流以第一时钟速率存储在存储器件中。 时钟发生器产生具有根据时钟控制信号调整的相关联的第二时钟速率的第二时钟。 控制电路以对应于第二时钟速率的速率从存储器件读取数据，并产生指示存储器件是否比预定义的阈值充满度级更满的丰满度信号。 时钟速度调节电路根据丰满度信号产生时钟控制信号。

公开(公告)号：US20070277213A1

公开(公告)日：2007-11-29

申请号：US11838167

申请日：2007-08-13

申请人： Frank Levinson ,  Gerald Sage ,  Arthur Lawson ,  Willem Mostert

发明人： Frank Levinson ,  Gerald Sage ,  Arthur Lawson ,  Willem Mostert

IPC分类号： H04N7/173

CPC分类号： H04N21/615 ,  H04N7/17309 ,  H04N7/22 ,  H04N21/6168

摘要： An optical signal return path system includes a transmitter having a sample clock generator for generating a sample clock and an RF signal receiver for receiving and converting an analog RF data signal into a first data stream of digitized RF data samples at a rate determined by the sample clock. Supplemental channel circuitry provides a second data stream. A multiplexor receives and combines the first data stream and second data stream, and an optical transmitter converting the combined data stream into a serialized optical data signal for transmission over an optical fiber. The second data stream may contain maintenance data reflecting an operational state of the transmitter. A receiver receives the optical data signal and recovers therefrom a digital data stream and an associated first clock having an associated first clock rate. The data stream is stored in a memory device at the first clock rate. A clock generator generates a second clock having an associated second clock rate that is adjusted in accordance with a clock control signal. A control circuit reads data from the memory device at a rate corresponding to the second clock rate and generates a fullness signal that indicates whether the memory device is more full than a predefined threshold fullness level. A clock speed adjusting circuit generates the clock control signal in accordance with the fullness signal.

摘要翻译： 光信号返回路径系统包括具有用于产生采样时钟的采样时钟发生器和RF信号接收器的发射器，RF信号接收器以模拟RF数据信号的速率接收数字化RF数据样本的第一数据流， 时钟。 补充信道电路提供第二数据流。 多路复用器接收并组合第一数据流和第二数据流，以及光发送器，将组合的数据流转换成串行化的光数据信号，以在光纤上传输。 第二数据流可以包含反映发射机的操作状态的维护数据。 接收器接收光学数据信号并从其中恢复数字数据流和相关联的第一时钟具有相关联的第一时钟速率。 数据流以第一时钟速率存储在存储器件中。 时钟发生器产生具有根据时钟控制信号调整的相关联的第二时钟速率的第二时钟。 控制电路以对应于第二时钟速率的速率从存储器件读取数据，并产生指示存储器件是否比预定义的阈值充满度级更满的丰满度信号。 时钟速度调节电路根据丰满度信号产生时钟控制信号。