公开(公告)号：US09172960B1

公开(公告)日：2015-10-27

申请号：US13237623

申请日：2011-09-20

申请人： Hilla Ben-Yaacov ,  Eran David Pinhasov

发明人： Hilla Ben-Yaacov ,  Eran David Pinhasov

IPC分类号： H04N19/124

CPC分类号： H04N19/124 ,  H04N19/126 ,  H04N19/137 ,  H04N19/14 ,  H04N19/176 ,  H04N19/186

摘要： Embodiments are directed towards modifying a quality of an image without affecting a bit rate associated with a video sequence of images. For each macro-block (MB) or sub-block within a MB for a target image to be encoded, various statistics are determined for a luminance component and chrominance components that provide at least average values for the chrominance components that may then be used to identify saturation thresholds. The saturation thresholds are used to determine a Qlevel. An average Qlevel from at least a previous frame is used to generate a Q modulation factor that may be combined with an activity based modulation factor and/or variance based modulation factor, or used singly. The final quantizer is calculated by bit-rate controller base quantizer multiplied by the Q modulation factor, and may be used to encode a MB or sub-block within a MB.

摘要翻译： 实施例旨在改变图像的质量而不影响与图像的视频序列相关联的比特率。 对于要编码的目标图像的MB内的每个宏块（MB）或子块，针对为色度分量提供至少平均值的亮度分量和色度分量确定各种统计量，然后可以将其用于 识别饱和阈值。 饱和阈值用于确定Qlevel。 使用来自至少先前帧的平均Qlevel来生成可以与基于活动的调制因子和/或基于方差的调制因子组合的Q调制因子，或者单独使用。 最后的量化器由比特率控制器基本量化器乘以Q调制因子计算，并且可以用于对MB内的MB或子块进行编码。

公开(公告)号：US20140233383A1

公开(公告)日：2014-08-21

申请号：US13768250

申请日：2013-02-15

申请人： Ifat NAAMAN ,  Hilla Ben Yaacov ,  Ariel Lior ,  Daniel Pasternak

发明人： Ifat NAAMAN ,  Hilla Ben Yaacov ,  Ariel Lior ,  Daniel Pasternak

IPC分类号： H04L12/56

CPC分类号： H04L47/10

摘要： Methods, systems, and computer program products for managing memory of a passive optical network (PON) are provided herein. The method includes the steps of receiving a plurality of data packets from a stream of packets. A plurality of packet descriptors associated with each data packet is stored in a configurable first queue. The first queue includes a plurality of cache slots and is managed in an internal memory. A state of the first queue is identified. In response to the state of the first queue meeting a predetermined threshold, packet descriptors from a tail cache slot of the first queue are transferred to a second queue. The second queue is managed in an external memory.

摘要翻译： 本文提供了用于管理无源光网络（PON）的存储器的方法，系统和计算机程序产品。 该方法包括从分组流接收多个数据分组的步骤。 与每个数据分组相关联的多个分组描述符被存储在可配置的第一队列中。 第一队列包括多个高速缓存时隙，并在内部存储器中进行管理。 识别出第一个队列的状态。 响应于第一队列的状态满足预定阈值，来自第一队列的尾部高速缓存时隙的分组描述符被传送到第二队列。 第二个队列在外部存储器中进行管理。