公开(公告)号：US4943855A

公开(公告)日：1990-07-24

申请号：US222987

申请日：1988-07-22

申请人： Hemant Bheda ,  Adrianus Ligtenberg

发明人： Hemant Bheda ,  Adrianus Ligtenberg

IPC分类号： H04N7/26 ,  H04N7/32

CPC分类号： H04N19/36 ,  H04N19/50 ,  H04N19/30 ,  H04N19/61 ,  H04N19/63

摘要： A system for reducing image data redundancies through progressive sub-band coding. The image is separated into a selected plurality of sub-bands, and the sub-band with the largest non-redundant data content is chosen and used to predict the data in the other sub-bands. Only prediction error information of the predicted sub-bands encoded and transmitted together with the encoded chosen sub-band. An overall performance error signal can also be evaluated at the encoder's end and used to further improve performance. The sub-band encoding can be performed recursively to still further reduce the encoded data.

摘要翻译： 一种通过逐行子带编码减少图像数据冗余的系统。 将图像分离成所选择的多个子带，并且选择具有最大非冗余数据内容的子带并用于预测其他子带中的数据。 仅与编码的所选子带一起编码和发送的预测子带的预测误差信息。 整个性能误差信号也可以在编码器末端进行评估，并用于进一步提高性能。 可以递归地执行子带编码以进一步减少编码数据。

公开(公告)号：US6002441A

公开(公告)日：1999-12-14

申请号：US742583

申请日：1996-10-28

申请人： Hemant Bheda ,  Ygal Arbel ,  Partha Srinivasan

发明人： Hemant Bheda ,  Ygal Arbel ,  Partha Srinivasan

IPC分类号： H04N7/26 ,  H04N7/50 ,  H04N21/2368 ,  H04N21/4143 ,  H04N21/434 ,  H04N7/32

CPC分类号： H04N21/4143 ,  H04N19/42 ,  H04N19/61 ,  H04N21/4341 ,  H04N21/439 ,  H04N21/44

摘要： A novel method and apparatus for decoding a compressed audio/video signal to produce decoded audio and decoded video signals. The decoding tasks are partitioned into "pre-processing tasks" and "post-processing tasks." Pre-processing tasks involve one or more non-signal processing oriented operations which do not require extensive computing resources. Pre-processing tasks are assigned to be executed by the host processor, which can perform these tasks without straining it computational resources. Pre-processing tasks include demultiplexing the compressed audio/video stream into compressed audio and compressed video streams, performing audio pre-processing on the compressed audio stream and performing video pre-processing on the compressed video stream. Post-processing tasks involve one or more signal processing oriented operations which require extensive computing resources. Pre-processing tasks are assigned to be executed by a dedicated subprocessor. Post-processing tasks include audio post-processing and video post-processing. In an embodiment, video frame tasks are also performed as part of video post-processing. Post-processing performed by the dedicated subprocessor outputs a decoded audio signal and a decoded video signal.

摘要翻译： 一种用于解码压缩音频/视频信号以产生解码音频和解码视频信号的新颖方法和装置。 解码任务分为“预处理任务”和“后处理任务”。 预处理任务涉及不需要大量计算资源的一个或多个非信号处理导向操作。 分配预处理任务将由主机处理器执行，主处理器可以执行这些任务而不使其计算资源变紧。 预处理任务包括将压缩音频/视频流解复用为压缩音频和压缩视频流，对压缩音频流执行音频预处理，并在压缩视频流上执行视频预处理。 后处理任务涉及需要大量计算资源的一个或多个面向信号处理的操作。 分配预处理任务由专用子处理器执行。 后处理任务包括音频后处理和视频后处理。 在一个实施例中，视频帧任务也作为视频后处理的一部分执行。 由专用子处理器执行的后处理输出解码音频信号和解码视频信号。

公开(公告)号：US20140232035A1

公开(公告)日：2014-08-21

申请号：US14184010

申请日：2014-02-19

申请人： Hemant Bheda

发明人： Hemant Bheda

IPC分类号： B29C67/00

CPC分类号： B29C64/10 ,  B29C64/106 ,  B29C64/112 ,  B29C64/118 ,  B29C64/165 ,  B29C64/20 ,  B29C64/307 ,  B29C64/321 ,  B29C64/336 ,  B29C64/386 ,  B29C64/40 ,  B29K2105/06 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

摘要： An apparatus for manufacturing an object includes an extrusion head having an extrusion needle for extruding thermoplastic material associated with one or more fiber strands. The apparatus may further include a turn-table, a more robotic arm for moving the extrusion head and needle, thermoplastic filament and fiber strand spools and thermoplastic filament and fiber strands. A controller is provided for directing the robotic arm, extrusion head and the turn-table. Further, a method for manufacturing an object includes generating a design for the object that substantially satisfies desired structural properties of the object and generating a sequence for extruding one or more beads of thermoplastic material to manufacture the object according to the design, in which the one or more beads of thermoplastic material are associated with one or more fiber strands. The one or more beads of thermoplastic material and the associated one or more fiber strands are then extruded according to the sequence.

摘要翻译： 用于制造物体的装置包括具有用于挤出与一根或多根纤维束相关联的热塑性材料的挤压针的挤压头。 该装置还可以包括转台，用于移动挤出头和针的更机器人臂，热塑性长丝和纤维线卷轴以及热塑性长丝和纤维束。 提供一个控制器用于引导机器臂，挤压头和转台。 此外，制造物体的方法包括生成基本上满足物体的期望结构特性的物体的设计，并产生用于挤出一个或多个热塑性材料珠的顺序，以根据设计来制造物体，其中一个 或更多的热塑性材料珠与一根或多根纤维束相关联。 然后根据该顺序挤出一个或多个热塑性材料珠粒​​和相关联的一个或多个纤维束。

公开(公告)号：US5220325A

公开(公告)日：1993-06-15

申请号：US676633

申请日：1991-03-28

申请人： Bryan D. Ackland ,  Hemant Bheda ,  Joseph H. Othmer

发明人： Bryan D. Ackland ,  Hemant Bheda ,  Joseph H. Othmer

IPC分类号： H03M7/40 ,  G06T9/00 ,  H03M7/42 ,  H04N7/08 ,  H04N7/26 ,  H04N7/50 ,  H04N19/00 ,  H04N21/434 ,  H04N21/4788

CPC分类号： H04N21/4344 ,  H03M7/425 ,  H04N19/00 ,  H04N19/61 ,  H04N19/98 ,  H04N21/4348 ,  H04N7/08 ,  H04N19/70 ,  H04N21/4788

摘要： Efficient decoding of an hierarchical, variable length, encoded data sequence containing embedded uncoded data into a sequence of fixed length instructions for subsequent processing by a digital video processor or the like is realized in an apparatus including a decoder having a plurality of variable length code decoding elements and a control structure embedded within each decoding element for transferring the decoding operation to an appropriate one of the decoding elements in response to a prior output from the decoder element. As the encoded data sequence is processed by the apparatus, a predetermined length of the sequence is stored in a register. The control structure further responds to the encoded data sequence to initiate selection of either the predetermined length of the sequence stored in the register or a portion of the decoder output as the fixed length instruction to be output by the apparatus.

公开(公告)号：US5990958A

公开(公告)日：1999-11-23

申请号：US877136

申请日：1997-06-17

申请人： Hemant Bheda ,  Sanjay Gongalore ,  Partha Srinivasan

发明人： Hemant Bheda ,  Sanjay Gongalore ,  Partha Srinivasan

IPC分类号： G06T9/00 ,  H04N7/26 ,  H04N7/50 ,  H04N7/18

CPC分类号： H04N19/423 ,  H04N19/42 ,  H04N19/61

摘要： A novel apparatus and method is disclosed to decode an encoded MPEG video stream in an efficient manner making optimal use of available system memory and computational resources. The present invention partitions the MPEG video decode task into software tasks which are executed by a CPU and hardware tasks which are implemented in dedicated video hardware. Software tasks represent those tasks which do not require extensive memory or computational resources. On the other hand, tasks implemented in dedicated video hardware represent those tasks which involve computational and memory mintensive operations. Synchronization between software tasks executed by the CPU and hardware tasks implemented in dedicated video hardware is achieved by means of various data structures, control structures and device drivers.

摘要翻译： 公开了一种新颖的装置和方法，以有效的方式解码编码的MPEG视频流，从而最佳地利用可用的系统存储器和计算资源。 本发明将MPEG视频解码任务分解成由CPU执行的软件任务和在专用视频硬件中实现的硬件任务。 软件任务代表不需要大量内存或计算资源的任务。 另一方面，在专用视频硬件中实现的任务代表涉及计算和存储器复杂操作的那些任务。 通过各种数据结构，控制结构和设备驱动程序实现由CPU执行的软件任务和在专用视频硬件中实现的硬件任务之间的同步。

公开(公告)号：US5781664A

公开(公告)日：1998-07-14

申请号：US949019

申请日：1997-10-10

申请人： Hemant Bheda ,  Partha Srinivasan

发明人： Hemant Bheda ,  Partha Srinivasan

IPC分类号： H04N7/26 ,  H04N7/36 ,  G06K9/36

CPC分类号： H04N19/43 ,  H04N19/51

摘要： A novel method and structure for the implementation of Half Pixel Filtering and Block Averaging that are efficient for implementation on a general purpose CPU. The number of required operations are reduced by operating on multiple pixels simultaneously using sliced arithmetic, while maintaining full accuracy. In certain embodiments, the number of operations are further reduced by compromising full accuracy. This approximation is applicable to decoding of bi-directional frames.

摘要翻译： 用于实现半通道滤波和块平均的新方法和结构，对于在通用CPU上实现是有效的。 通过使用切片算术同时操作多个像素，同时保持完整的精度，减少了所需操作的数量。 在某些实施例中，通过损害完整的精度来进一步降低操作次数。 该近似可应用于双向帧的解码。