公开(公告)号：US20160079987A1

公开(公告)日：2016-03-17

申请号：US14483415

申请日：2014-09-11

Applicant: EchoStar Technologies L.L.C.

Inventor： Santharam Gurumani ,  Bala Subramaniam

IPC: H03L7/00

CPC classification number: H03L7/00 ,  G06F1/022 ,  G06F1/08 ,  H03L7/0994

Abstract: A numerically controlled oscillator includes a phase accumulator that outputs a phase word and a clock that periodically outputs a clock signal in accordance with a delay interval. The phase accumulator outputs a new phase word in response to receiving the clock signal. A clock controller calculates a timing drift and adjusts the delay interval to reduce the timing drift. A method includes receiving a plurality of frequency control words, calculating a delay interval, accumulating the frequency control words in accordance with the delay interval to generate a phase word, converting the phase word to a waveform, calculating a timing drift, and adjusting the delay interval to reduce the timing drift.

Abstract translation: 数控振荡器包括相位累加器，其输出相位字和根据延迟间隔周期性地输出时钟信号的时钟。 响应于接收时钟信号，相位累加器输出新的相位字。 时钟控制器计算定时漂移并调整延迟间隔以减少定时漂移。 一种方法包括接收多个频率控制字，计算延迟间隔，根据延迟间隔累积频率控制字以产生相位字，将相位字转换为波形，计算定时漂移以及调整延迟 间隔来减少时序漂移。

公开(公告)号：US20160080802A1

公开(公告)日：2016-03-17

申请号：US14483400

申请日：2014-09-11

Applicant: EchoStar Technologies L.L.C.

Inventor： Bala Subramaniam ,  Yanlai Liu

IPC: H04N21/438 ,  H04N21/647 ,  H04N21/4402 ,  H04N21/44 ,  H04N21/61

CPC classification number: H04N21/4382 ,  H04H40/90 ,  H04H60/11 ,  H04N21/44 ,  H04N21/440254 ,  H04N21/6143 ,  H04N21/6193 ,  H04N21/647

Abstract: A system includes an antenna and a receiver. The antenna receives an encoded satellite signal having a plurality of frames. The receiver receives the satellite signal from the antenna and iteratively processes each frame a predetermined number of times. The number of times the frame is processed is based at least on part on a characteristic of the frame. Moreover, the receiver terminates frame processing earlier if a condition, associated with the processing of the frame, exists. An example receiver includes a decoder that decodes the satellite signal and extracts data from at least one frame by iteratively processing each frame the predetermined number of times. The receiver further includes a controller that generates a control signal representing the predetermined number of times the decoder is to iteratively process each frame. The controller generates the control signal based at least in part on a characteristic of the frame.

Abstract translation: 系统包括天线和接收机。 天线接收具有多个帧的编码卫星信号。 接收机从天线接收卫星信号，并且迭代地处理每个帧预定次数。 帧被处理的次数至少部分地基于帧的特性。 此外，如果与帧的处理相关联的条件存在，则接收器较早地终止帧处理。 示例性接收机包括解码器，其通过对预定次数的每个帧进行迭代处理来解码卫星信号并从至少一个帧提取数据。 接收机还包括控制器，该控制器产生表示解码器迭代地处理每个帧的预定次数的控制信号。 控制器至少部分地基于该帧的特性来产生控制信号。