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1. 发明授权

US09780859B2 Multi-user MIMO via active scattering platforms 有权
公开(公告)号：US09780859B2
公开(公告)日：2017-10-03
申请号：US14193540
申请日：2014-02-28
申请人： Donald C. D. Chang , Juo-Yu Lee
发明人： Donald C. D. Chang , Juo-Yu Lee
IPC分类号： H04B7/06 , H04L5/00 , H04B7/0413 , H04B7/0456
CPC分类号： H04B7/0626 , H04B7/0413 , H04B7/0456 , H04L5/0048
摘要： Aircrafts flying near Earth or naval vessels are used as active scattering platforms in a multipath communications channel in MIMO communications systems. These man-made platforms in a communications channel, with techniques of beam forming and wavefront multiplexing in both transmitters at source and receivers at destinations enhance the ability to coherently combine the power of the communication signals, and improve the signal-to-noise ratio in addition to the MIMO advantage of multiple times of channel capacity over a finite bandwidth via frequency reuse. These platforms may be stationary, mobile ground based, or ocean surface based. They may also be airborne, or space borne. A swarm of 10's micro-UAV based mini-transponders is an example through active scattering of these micro-UAV to generate 10× more available bandwidth between a base station and ground mobile users over same bandwidth.

2. 发明授权

US11368195B2 Active scattering for bandwith enhanced MIMO 有权
公开(公告)号：US11368195B2
公开(公告)日：2022-06-21
申请号：US14288707
申请日：2014-05-28
申请人： Donald C. D. Chang , Juo-Yu Lee
发明人： Donald C. D. Chang , Juo-Yu Lee
IPC分类号： H04B7/0452 , H04B7/155 , H04W16/28
摘要： Embodiments of a communications system with multiple active scattering devices to service multiple users either indoor or outdoor over same spectrum in a communication network and a method for the system are generally described herein. Signals streams for transmission to users in spoke-and-hub configurations will utilize multiple active scattering devices. Three categories of operational concepts are presented: (1) multiple scattering devices arranged geometrically bundled together to function as active mirrors or retro-directive repeaters, (2) distributed man-made scattering devices placed to enhance channel bandwidth in between a hub and a common service area via frequency re-use, and (3) organizing distributed active scattering devices by remote beamforming for servicing a small common coverage area indoor or outdoor with enhanced bandwidth. All three techniques are for service with enhanced bandwidth and angular resolutions via frequency reuse, and extended service range via coherent operations of scattering devices.

3. 发明授权

US10333900B2 Enveloping for multilink communications 有权
公开(公告)号：US10333900B2
公开(公告)日：2019-06-25
申请号：US14993397
申请日：2016-01-12
申请人： Donald C. D. Chang , Juo-Yu Lee , Steve K. Chen
发明人： Donald C. D. Chang , Juo-Yu Lee , Steve K. Chen
IPC分类号： H04J3/02 , H04L29/06 , G06F21/62 , H04L27/00
摘要： Enveloping techniques using incoherent wavefront multiplexing (WF muxing or K-muxing) will enhance privacy protection on data communications. The disclosure relates to methods and architectures of packing or enveloping data using WF muxing, or K-muxing, for information transport via multiple communication links such as concurrently via multiple satellites, airborne platforms, wireless terrestrial links, and/or other wireless links. The multi-link communications may include the use of cloud transport of multiple WF-muxed data packages. It is focused to appearance of a digital envelop and reliability of enclosed data. The K-muxing on information digital streams before modulation in a transmitter shall provide enhanced data privacy and better availability. The WF multiplexed (WF muxed or K-muxed) information data streams will be individually and concurrently sent to the multiple links accordingly for data transport. The corresponding WF demuxing or K-demuxing will be performed on received K-muxed information digital stream after demodulation in a receiver. The terms of information data or digital information streams are used to differentiate them from those of data signals or digital signal streams. In a transmission, information data usually will be modulated by modulators and converted into data signals before being transmitted. Similarly in a receiver, a received digital signal stream is demodulated by a demodulator and become a digital information stream. The incoherent K-muxing and K-demuxing will be used for processing information data or digital information streams for the benefits of enhanced privacy and better availability. On the other hand, the coherent K-muxing and K-demuxing for processing data signals or digital signal streams will be used for power combining and/or dynamic resource allocations for communications channels.

4. 发明授权

US09848094B2 Mobile scanner via private data on cloud 有权
公开(公告)号：US09848094B2
公开(公告)日：2017-12-19
申请号：US14935319
申请日：2015-11-06
申请人： Donald C. D. Chang , Juo-Yu Lee , Steve K. Chen
发明人： Donald C. D. Chang , Juo-Yu Lee , Steve K. Chen
IPC分类号： H04N1/00 , H04L29/08 , G06F3/12
CPC分类号： H04N1/00307 , G06F3/1222 , G06F3/1248 , G06F3/1292 , H04L67/10 , H04N1/00108
摘要： Presented are cloud storage architectures for private data of scanned documents uploaded from smart phone among terminals with enhanced capability of data privacy and survivability. Pre-processing for storing data in IP cloud comprises: transforming multiple first data sets into multiple second data sets at an uploading site, wherein one of said second data sets comprises a weighted sum of said first data sets; storing said second data sets in an IP cloud via IP connectivity; and storing data in multiple data storages linking to said second data sets at said uploading site. In accordance with an embodiment of present invention post processing may comprise recovering said second data sets at a downloading site via IP network.

5. 发明授权

US10289856B2 Digital enveloping for digital right management and re-broadcasting 有权
公开(公告)号：US10289856B2
公开(公告)日：2019-05-14
申请号：US14517717
申请日：2014-10-17
申请人： Donald C. D. Chang , Juo-Yu Lee , Jeffrey C. Chang , Steve K Chen
发明人： Donald C. D. Chang , Juo-Yu Lee , Jeffrey C. Chang , Steve K Chen
IPC分类号： G06F21/62 , H04L29/06
摘要： Multiple data sets are preprocessed by WF muxing before stored/transported. WF muxed data is aggregated data from multiple data sets. The original data is reassembled via WF demuxing after retrieving a lesser but scalable number of WF muxed data sets. A customized set of WF muxing on multiple digital files as inputs including at least a data message file and a selected digital envelop file, is configured to guarantee at least one of the multiple outputs comprising a weighted sum of all inputs with an appearance to human natural sensors substantially identical to the appearance of the selected digital envelop in a same image, video or audio format. The output file is the file with enveloped or embedded messages. The embedded message may be reconstituted by a corresponding WF demuxing processor at destination with the known a priori information of the original digital envelope.

6. 发明授权

US09866300B2 Wavefront multiplexing in passive optical network with remote digital beam forming 有权
公开(公告)号：US09866300B2
公开(公告)日：2018-01-09
申请号：US14993442
申请日：2016-01-12
申请人： Donald C. D. Chang , Juo-Yu Lee , Steve K. Chen
发明人： Donald C. D. Chang , Juo-Yu Lee , Steve K. Chen
IPC分类号： H04J14/00 , H04B7/06 , H04B10/2575 , H04B7/0413
CPC分类号： H04B7/0617 , H04B7/0413 , H04B10/2575
摘要： Four independent technologies are incorporated in this invention to efficiently and cost effectively implement dynamic last mile connectivity. The four technologies are passive optical networks (PON), Small cell, wavefront multiplexing (or K-muxing), and digital beam forming (DBF). We have filed US patents for communications architectures featuring K-muxing overlaid over low cost of PON. Those inventions relate particularly to resource allocation in passive optical networks (PON) via wavefront multiplexing (WF-muxing or K-muxing) and wavefront demultiplexing (WF-demuxing or K-demuxing). The “WF-muxing in PON” can be configured for performing remote digital beam forming (RDBF) over a service area covered by multiple small cells. The RDBF may generate multiple shaped beams with enhanced connectivity and better isolations over a same frequency slot concurrently to serve multiple users over the coverage area.

7. 发明授权

US09692549B2 Accessing CP channels with LP terminals via wavefront multiplexing 有权
公开(公告)号：US09692549B2
公开(公告)日：2017-06-27
申请号：US14728980
申请日：2015-06-02
申请人： Juo-Yu Lee , Donald C. D. Chang , Tzer-Hso Lin
发明人： Juo-Yu Lee , Donald C. D. Chang , Tzer-Hso Lin
IPC分类号： H04J14/06 , H01Q21/24 , H04B7/185
CPC分类号： H04J14/06 , H01Q21/245 , H04B7/18504 , H04B7/18513
摘要： Presented are methods that utilize wavefront multiplexing for enabling linearly-polarized terminals to access circularly-polarized satellite transponders. The methods disclosed herein feature (1) polarization formation capability that renders transmitted signal conditioned on circularly-polarized channels through multiple linearly-polarized feeds, and (2) polarization-conversion capability that compensate path differentials introduced by electromagnetic wave propagation channels. Data streams to be transmitted are pre-processed by a wavefront multiplexer into multiple wavefront components in linear polarization formats, where signals from respective data streams are replicated into linearly-polarized sub-channels. These replicated data streams are linked via a unique complex weighting vector (amplitude and phase or their equivalents), or “wavefront”, which are also linked by various spatially independent wavefronts. Additionally, a probing signal is sent on the transmitting side and linked via some of the independent wavefronts. Aggregated signals in linearly-polarized sub-channels are unique linear combinations of all input data streams. Aggregated signals in turn appear in circularly-polarized formats and propagate through circularly-polarized channels including circularly-polarized satellite transponders and a circularly-polarized teleport on the receiving side. Correlation between the circularly-polarized signal and the probing signal is sent back to the transmitting side that drives the polarization-conversion function toward the optimal state such that this correlation is lower than a pre-defined level. Accordingly, an optimally configured satellite communication system either (1) enables the linearly-polarized terminal on the transmitting side to access right-hand circularly-polarized satellite transponder without interfering the left-hand circularly-polarized satellite transponder, or (2) enables the linearly-polarized terminal on the transmitting side to access left-hand circularly-polarized satellite transponder without interfering the right-hand circularly-polarized satellite transponder.

8. 发明申请

US20150009892A1 Active Scattering for Bandwidth Enhanced MIMO 审中-公开
标题翻译：带宽增强MIMO的主动散射
公开(公告)号：US20150009892A1
公开(公告)日：2015-01-08
申请号：US14288707
申请日：2014-05-28
申请人： Donald C.D. Chang , Juo-Yu Lee
发明人： Donald C.D. Chang , Juo-Yu Lee
IPC分类号： H04B7/04 , H04W16/28
CPC分类号： H04B7/0452 , H04B7/15535 , H04W16/28
摘要： Embodiments of a communications system with multiple active scattering devices to service multiple users either indoor or outdoor over same spectrum in a communication network and a method for the system are generally described herein. Signals streams for transmission to users in spoke-and-hub configurations will utilize multiple active scattering devices. Three categories of operational concepts are presented: (1) multiple scattering devices arranged geometrically bundled together to function as active mirrors or retro-directive repeaters, (2) distributed man-made scattering devices placed to enhance channel bandwidth in between a hub and a common service area via frequency re-use, and (3) organizing distributed active scattering devices by remote beamforming for servicing a small common coverage area indoor or outdoor with enhanced bandwidth. All three techniques are for service with enhanced bandwidth and angular resolutions via frequency reuse, and extended service range via coherent operations of scattering devices.
摘要翻译：在此通常描述具有多个主动散射装置的通信系统的实施例，其用于在通信网络中的同一频谱上的室内或室外服务多个用户以及该系统的方法。用于传输到辐射和轮毂配置中的用户的信号流将使用多个主动散射设备。提出了三类操作概念：（1）多个散射装置，几何组合在一起，用作主动反射镜或反向指示中继器，（2）分布式人造散射装置，用于增强集线器与公共端之间的通道带宽服务区域，以及（3）通过远程波束成形组织分布式主动散射设备，为室内或室外小型公共覆盖区域提供增强带宽。所有这三种技术都是通过频率重用提供增强带宽和角度分辨率的服务，以及通过散射设备的相干操作实现的扩展服务范围。

9. 发明申请

US20170078501A1 Mobile Scanner via Private Data on Cloud 有权
标题翻译：移动扫描器通过云端的私有数据
公开(公告)号：US20170078501A1
公开(公告)日：2017-03-16
申请号：US14935319
申请日：2015-11-06
申请人： Donald C.D. Chang , Juo-Yu Lee , Steve K. Chen
发明人： Donald C.D. Chang , Juo-Yu Lee , Steve K. Chen
IPC分类号： H04N1/00 , G06F3/12 , H04L29/08
CPC分类号： H04N1/00307 , G06F3/1222 , G06F3/1248 , G06F3/1292 , H04L67/10 , H04N1/00108
摘要： Presented are cloud storage architectures for private data of scanned documents uploaded from smart phone among terminals with enhanced capability of data privacy and survivability. Pre-processing for storing data in IP cloud comprises: transforming multiple first data sets into multiple second data sets at an uploading site, wherein one of said second data sets comprises a weighted sum of said first data sets; storing said second data sets in an IP cloud via IP connectivity; and storing data in multiple data storages linking to said second data sets at said uploading site. In accordance with an embodiment of present invention post processing may comprise recovering said second data sets at a downloading site via IP network.
摘要翻译：提供云端存储架构，用于从具有增强的数据隐私和生存能力的终端之间从智能手机上传的扫描文档的私人数据。在IP云中存储数据的预处理包括：在上载站点将多个第一数据集合变换成多个第二数据集，其中所述第二数据集之一包括所述第一数据集的加权和; 通过IP连接将所述第二数据集存储在IP云中; 以及将数据存储在与所述上载站点处的所述第二数据集相关联的多个数据存储器中。根据本发明的实施例，后处理可以包括经由IP网络在下载站点处恢复所述第二数据集。

10. 发明申请

US20150040184A1 Digital Enveloping for Digital Right Management and Re-broadcasting 审中-公开
公开(公告)号：US20150040184A1
公开(公告)日：2015-02-05
申请号：US14517717
申请日：2014-10-17
申请人： Donald C.D. Chang , Juo-Yu Lee , Jeffrey C. Chang , Steve K. Chen
发明人： Donald C.D. Chang , Juo-Yu Lee , Jeffrey C. Chang , Steve K. Chen
IPC分类号： G06F21/62 , H04L29/06
CPC分类号： G06F21/6209 , G06F21/6245 , H04L65/4084 , H04L65/602 , H04L65/604 , H04L65/607
摘要： Data files with digital envelops are used (1) for embedded identifiers for digital right management (DRM), and (2) as means delivering additional data or new information via repeated re-broadcasting process by many broadcasting service providers. The new DRM applications offer additional privacy and survivability while data is in storage and/or transported on cloud. Wavefront multiplexing/demultiplexing process (WF muxing/demuxing) embodying an architecture that utilizes multi-dimensional waveforms has found applications in data storage and transport on cloud. Multiple data sets are preprocessed by WF muxing before stored/transported. WF muxed data is aggregated data from multiple data sets that have been “customized processed” and disassembled into any scalable number of sets of processed data, with each set being stored on a storage site. The original data is reassembled via WF demuxing after retrieving a lesser but scalable number of WF muxed data sets. A customized set of WF muxing on multiple digital files as inputs including at least a data message file and a selected digital envelop file, is configured to guarantee at least one of the multiple outputs comprising a weighted sum of all inputs with an appearance to human natural sensors substantially identical to the appearance of the selected digital envelop in a same image, video or audio format. The output file is the file with enveloped or embedded messages. The embedded message may be reconstituted by a corresponding WF demuxing processor at destination with the known a priori information of the original digital envelope. In short, digital enveloping/de-enveloping can be implemented via WF muxing and demuxing formulations. WF muxed data featured enhanced privacy and redundancy in data transport and storage on cloud. On the other hand, data enveloping is in a different application domain from most of WF muxing applications as far as redundancy is concerned. Enveloped data is intended only for limited receivers who has access to associated digital enveloped data files with enhanced privacy for no or minimized redundancy.

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