公开(公告)号：WO2011072070A1

公开(公告)日：2011-06-16

申请号：PCT/US2010/059563

申请日：2010-12-08

申请人： HARMONIC, INC. ,  KOREN, Noam ,  BARD, Shai ,  NITZANY, Eyal

发明人： KOREN, Noam ,  BARD, Shai ,  NITZANY, Eyal

IPC分类号： H04N7/025

CPC分类号： H04N21/812 ,  H04N21/23424 ,  H04N21/23611 ,  H04N21/242 ,  H04N21/858

摘要： A data stream processing system receives a transport stream containing single/multiple program/s and receives alternate content. The system identifies portions of the transport stream to replace with the alternate content. An alternate content data stream is generated that includes the alternate content and at least one sync packet. The sync packet enables synchronous replacement of the alternate content into the transport stream. The system then distributes the alternate content data stream.

摘要翻译： 数据流处理系统接收包含单/多个节目的传输流并接收备用内容。 系统识别传输流的部分替换为替代内容。 生成包括备用内容和至少一个同步分组的备用内容数据流。 同步分组允许将替代内容同步替换到传输流中。 然后系统分配备用内容数据流。

公开(公告)号：WO2007021835A2

公开(公告)日：2007-02-22

申请号：PCT/US2006/031192

申请日：2006-08-10

申请人： HARMONIC INC. ,  BAR, Shahar

发明人： BAR, Shahar

IPC分类号： H04N7/173

CPC分类号： H04N21/6377 ,  H04N21/23439 ,  H04N21/6125 ,  H04N21/658

摘要： A method, apparatus and computer program product are provided for delivering television programming to a subscriber. In one aspect the method includes receiving one or more channels of program content, and encoding each channel a plurality of times, each time at a different rate producing multiple rate encoded signals for each channel. The method can further include transmitting the multiple rate encoded signals to a central office over a network, determining an available bandwidth of a downstream link to a subscriber and a current bit rate available for transmission to the subscriber. The method can further include selecting a best available bit rate from the multiple rate encoded signals for a requested channel and transmitting the selected rate encoded signal to the subscriber.

摘要翻译： 提供了一种用于向订户传送电视节目的方法，设备和计算机程序产品。 在一个方面，该方法包括接收节目内容的一个或多个频道，并且多次编码每个频道，每次以不同的速率为每个频道产生多个速率编码的信号。 该方法可以进一步包括通过网络将多速率编码信号传输到中心局，确定到用户的下行链路的可用带宽和可用于传输给用户的当前比特率。 该方法可以进一步包括从多个速率编码信号中为请求的信道选择最佳可用比特率，并将选择的速率编码信号发送给用户。

公开(公告)号：WO2006099128A3

公开(公告)日：2006-09-21

申请号：PCT/US2006/008583

申请日：2006-03-10

申请人： HARMONIC INC. ,  BONEN, Adi ,  NGUYEN, Hoa ,  CHEN, LiPing ,  HUANG, Wei

发明人： BONEN, Adi ,  NGUYEN, Hoa ,  CHEN, LiPing ,  HUANG, Wei

IPC分类号： H01S5/024

摘要： An optical transmitter for coarse wavelength division multiplexed (CWDM) optical communication systems uses a conventional laser (e.g. laser diode) and in addition a heater element is provided thermally coupled to the laser. A thermal sensor and associated control circuit drive the heater so as to control the power consumed by the heater to assure that the laser's temperature is not lower than a predetermined minimum working temperature. When the sensed laser temperature is above this predetermined minimum temperature, the control circuit turns off the heater. The total operating range of the transmitter in terms of ambient temperature is thus extended beyond its inherent operating range by the maximum laser temperature rise created by the heater. This allows a CWDM optical transmitter with the heater and control circuitry to be used in outdoor applications where a wide ambient temperature range is required.

公开(公告)号：WO2006026683A3

公开(公告)日：2006-03-09

申请号：PCT/US2005/031014

申请日：2005-08-29

申请人： HARMONIC INC. ,  PICCO, Martin, Raptis ,  KOREN, Noam

发明人： PICCO, Martin, Raptis ,  KOREN, Noam

IPC分类号： H03D3/18 ,  H03D3/24

摘要： Methods and apparatus to communicate between a local component (210) and a remote component (230), where the local component (210) is connected to the remote component (230) using a non-deterministic communication link (220). A local clock (216) is synchronized with a remote clock (236) to within a maximum offset. A rate message (226) from the remote component (230) is received at the local component (210), where the rate message (226) includes a first time stamp. A data rate is adjusted using the rate message (226) when the time of the local clock (216) substantially matches a time determined using the first time stamp. A data message (222) is sent to the remote component (230) using the adjusted data rate, where the data message (222) includes a second time stamp for use in processing data in the data message (222). In some implementations, the time determined using the first time stamp is also determined using information about a communication link delay and/or a clock offset.

公开(公告)号：WO2021091839A1

公开(公告)日：2021-05-14

申请号：PCT/US2020/058610

申请日：2020-11-02

申请人： HARMONIC, INC.

发明人： LEVENTER, Amir ,  GINSBURG, Daniel

IPC分类号： H04L12/24

摘要： Exchanging encrypted packet payloads between a cable headend and a Remote MACPHY device. A single device executes a cable modem termination system (CTMS) implemented in software and not hardware. The software-implemented CMTS (i.e., a virtual CMTS) instantiates a tunnel to the Remote MACPHY device. The virtual CMTS encrypts the payloads of one or more packets and transmits those packets over the tunnel to the Remote MACPHY device. In similar fashion, the Remote MACPHY device may send packets with encrypted payloads to the virtual CMTS over the tunnel. In this way, encryption is not performed on a hop by hop basis, thereby allowing the payloads of packets to remain encrypted at all times during transmit through the tunnel.

公开(公告)号：WO2021091603A1

公开(公告)日：2021-05-14

申请号：PCT/US2020/043323

申请日：2020-07-23

申请人： HARMONIC, INC.

发明人： ASSOULINE, Lior ,  MULLER, Alex ,  BEN-NATAN, Nimrod ,  LEVENTER, Amir

IPC分类号： G06F15/173 ,  H04L1/20 ,  H04L12/18 ,  H04L12/56 ,  H04L29/06 ,  H04Q11/04 ,  H04W28/20

摘要： Configurable levels of latency and jitter in data flows based on application type. An application type for a data flow is identified. The application type is one of a plurality of types that include a first type associated with applications that retransmit missing data packets not received by the intended recipient and a second type associated with applications that do not retransmit missing data packets not received by the intended recipient. Data packets of a data flow are enqueued onto a particular queue of two or more queues based on their identified application type. Each of the two or more queues store data packets of a different application type to be sent across a communication channel.

公开(公告)号：WO2020181115A1

公开(公告)日：2020-09-10

申请号：PCT/US2020/021235

申请日：2020-03-05

申请人： HARMONIC, INC

发明人： ZALTSMAN, Ariel ,  KASTANOVICH, Liav

IPC分类号： H04

摘要： Assigning an appropriate modulation profile for an orthogonal frequency-division multiplexing (OFDM) channel. The current modulation profile assigned to a specific cable modem for communicating over a specific OFDM channel is examined to determine whether to consider reassigning the specific cable modem to a different modulation profile. Only upon determining consideration should be given, an assessment is made as to which modulation profile, of a set of candidate modulation profiles available to that cable modem for communicating over the specific OFDM channel, should be assigned to the specific cable modem using linear domain averaging over the OFDM sub carriers of the ratios between a Mean Error Rate (MER) threshold per sub carrier for the specific cable modem and the MER reported by the specific cable modem per sub carrier. A new modulation profile is assigned to the specific modem based on the assessment.

公开(公告)号：WO2016134345A1

公开(公告)日：2016-08-25

申请号：PCT/US2016/018827

申请日：2016-02-20

申请人： HARMONIC, INC.

发明人： KOREN, Noam ,  ROSENBERG, Jeremy, Cole ,  MARTIN, Marcelo, San

IPC分类号： H04N21/2343 ,  H04N21/258 ,  H04N21/2662 ,  H04N21/658 ,  H04N19/40 ,  H04N19/154 ,  H04N19/162

CPC分类号： H04N19/40 ,  H04L67/306 ,  H04N19/115 ,  H04N19/147 ,  H04N19/172 ,  H04N19/184 ,  H04N19/46 ,  H04N19/593 ,  H04N21/2343 ,  H04N21/25891 ,  H04N21/2662 ,  H04N21/6582

摘要： Approaches for transcoding on-the-fly (TOTF). A digital video is encoded to produce a set of encoding decisions. A video quality profile is created that describes the set of encoding decisions. Upon determining that the video quality profile is associated with a compressed digital video bit stream, a final rate of compression is determined, frame by frame, for the compressed digital video bit stream using the video quality profile. The final rate of compression may be determined either internal or external to an encoder/transcoder. The video quality profile may be created by reviewing a plurality of encoding decisions to determine which encoding decisions merit inclusion based on a variety of criteria.

摘要翻译： 实时转码方法（TOTF）。 数字视频被编码以产生一组编码决定。 创建了描述编码决策集的视频质量配置文件。 在确定视频质量配置文件与压缩数字视频比特流相关联时，使用视频质量配置文件，对于压缩数字视频比特流，逐帧确定最终压缩率。 最终的压缩率可以由编码器/代码转换器内部或外部确定。 可以通过查看多个编码决定来创建视频质量简档，以基于各种标准来确定哪些编码决定值得包含。

公开(公告)号：WO2013058750A1

公开(公告)日：2013-04-25

申请号：PCT/US2011/056925

申请日：2011-10-19

申请人： HARMONIC INC. ,  KAYE, James E.

发明人： KAYE, James E.

IPC分类号： H04N21/2662 ,  H04N21/234

CPC分类号： H04N21/23655 ,  H04N19/46 ,  H04N21/234

摘要： Systems, method, and computer program products for providing multi-channel variable bit-rate video compression are described. In some implementations, video channels can be allocated with bit rates that are set based on a predefined video compression quality. More specifically, each channel can generate a table describing the set of video compression quality values each corresponding to a bit rate value that can be used to achieve that video compression quality value. To generate the table or pre-compression coding information, encoders of the system described herein can pre-encode each input signal at multiple, different bit rates, and record the video compression quality value achievable at each of the bit rates. The system also can use lesser number of encoders for pre-encoding, supplemented by data interpolation, to generate the pre-compression coding information, requiring less processing algorithm but at an expense of lower accuracy.

摘要翻译： 描述了用于提供多通道可变比特率视频压缩的系统，方法和计算机程序产品。 在一些实施方式中，视频信道可以被分配为基于预定视频压缩质量设置的比特率。 更具体地，每个通道可以生成描述视频压缩质量值集合的表，每个视频压缩质量值对应于可用于实现该视频压缩质量值的比特率值。 为了生成表或预压缩编码信息，本文描述的系统的编码器可以以多个不同的比特速率对每个输入信号进行预编码，并且记录在每个比特率下可实现的视频压缩质量值。 该系统还可以使用较少数量的编码器进行预编码，由数据插值补充，以产生预压缩编码信息，需要较少的处理算法，但是牺牲了较低的精度。

公开(公告)号：WO2010138913A1

公开(公告)日：2010-12-02

申请号：PCT/US2010/036727

申请日：2010-05-28

申请人： HARMONIC, INC. ,  MILNE, Mike ,  HAMIDI-RAD, Shahab ,  LEVIN, Dror

发明人： MILNE, Mike ,  HAMIDI-RAD, Shahab ,  LEVIN, Dror

IPC分类号： H04J3/16

CPC分类号： H04N21/64761 ,  H04L65/607 ,  H04L65/80 ,  H04N19/102 ,  H04N19/172 ,  H04N19/46 ,  H04N19/61 ,  H04N21/23655 ,  H04N21/6338 ,  H04N21/643

摘要： The present invention discloses methods and systems of statistical video multiplexing to improve the performance of video encoding by minimizing delay while achieving high video quality. The video encoders used in the system are capable of calculating the complexity of underlying video sources and communicating the complexity to the multiplexer. Furthermore, the video encoders are capable of estimating the look-ahead complexity, i.e. the future complexity and communicating the future complexity values to the multiplexer. A processor associated with the multiplexer allocates bit rates for the video encoders according to the received complexity values and future complexity values. The bit rate information is then communicated to the video encoders. Each video encoder will then exercise its coding control parameters to regulate the resulting bit rate to be within or close to the allocated bit rate.

摘要翻译： 本发明公开了统计视频复用的方法和系统，以通过最小化延迟同时实现高视频质量来提高视频编码的性能。 系统中使用的视频编码器能够计算底层视频源的复杂度，并将复杂度传达给多路复用器。 此外，视频编码器能够估计先行复杂度，即未来的复杂度，并将未来的复杂度值传送给多路复用器。 与复用器相关联的处理器根据接收到的复杂度值和未来的复杂度值为视频编码器分配比特率。 然后将比特率信息传送到视频编码器。 然后，每个视频编码器将执行其编码控制参数以将得到的比特率调节在分配的比特率内或接近于分配的比特率。