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1. 发明申请

US20190253135A1 COMMUNICATION METHOD AND COMMUNICATION DEVICE USING AMBIENT BACKSCATTER COMMUNICATION 审中-公开
公开(公告)号：US20190253135A1
公开(公告)日：2019-08-15
申请号：US16203394
申请日：2018-11-28
申请人： Electronics and Telecommunications Research Institute , FOUNDATION FOR RESEARCH AND BUSINESS, SEOUL NATIONAL UNIVERSITY OF SCIENCE AND TECHNOLOGY
发明人： Byung Jang JEONG , Woo Jin BYUN , Ji-Hoon YUN , Jae-Han LIM , Wisnu MURTI
IPC分类号： H04B7/22 , H04L1/00 , H04B7/0456 , H04B7/08
CPC分类号： H04B7/22 , H04B7/0473 , H04B7/0805 , H04L1/0003
摘要： Disclosed are a communication method and communication apparatus using an ambient backscatter communication. A transmission apparatus may include generating a plurality of bitsets by fragmenting data based on a predetermined bitset length, mapping the plurality of bitsets to a plurality of switching patterns based on a data size, and controlling a reflection of a background radio frequency (RF) signal based on a corresponding mapped switching pattern, a total number of the plurality of switching patterns may be determined based on the bitset length, and each of the plurality of switching patterns may have a different length.

2. 发明授权

US09792082B1 Streaming display data from a mobile device using backscatter communications 有权
公开(公告)号：US09792082B1
公开(公告)日：2017-10-17
申请号：US15423356
申请日：2017-02-02
申请人： X Development LLC
发明人： Travis Deyle
IPC分类号： H04B7/00 , G06F3/14 , H04B7/22
CPC分类号： G06F3/1454 , H04B7/22 , H04B7/26
摘要： A method of wirelessly communicating a screen image between a mobile device and a base station coupled to a display terminal includes receiving, at the mobile device, electromagnetic (“EM”) radiation emitted from a base station and incident upon an antenna of the mobile device. A screen image generated by the mobile device is encoded onto a backscatter channel of the EM radiation by modulating an impedance of the antenna. The screen image is transmitted from the mobile device to the base station for display on a display terminal coupled to the base station.

3. 发明授权

US09136938B1 Communication method and system that uses low latency/low data bandwidth and high latency/high data bandwidth pathways 有权
标题翻译：使用低延迟/低数据带宽和高延迟/高数据带宽路径的通信方法和系统
公开(公告)号：US09136938B1
公开(公告)日：2015-09-15
申请号：US14566851
申请日：2014-12-11
申请人： Tesla Wireless Company LLC
发明人： Kevin Babich
IPC分类号： H04J3/24 , H04B7/22 , H04B7/145 , H04W28/20 , H04L12/66 , H04B10/112 , H04L12/18 , H04L12/64 , H04B10/11 , H04B7/06 , H04W40/26 , H04B7/08
CPC分类号： H04B7/22 , G06Q40/06 , H04B7/0686 , H04B7/0868 , H04B7/2606 , H04B10/11 , H04B10/112 , H04B10/1121 , H04B10/1123 , H04B10/1125 , H04B10/1127 , H04B10/25 , H04L12/1804 , H04L12/1809 , H04L12/189 , H04L12/64 , H04L12/6418 , H04L12/66 , H04L45/24 , H04W40/26
摘要： A communication system uses multiple communications links, preferably links that use different communications media. The multiple communications links may include a high latency/high bandwidth link using a fiber-optic cable configured to carry large volumes of data but having a high latency. The communications links may also include a low latency/low bandwidth link implemented using skywave propagation of radio waves and configured to carry smaller volumes of data with a lower latency across a substantial portion of the earth's surface. The two communications links may be used together to coordinate various activities such as the buying and selling of financial instruments.
摘要翻译：通信系统使用多个通信链路，优选地使用不同通信媒体的链路。多个通信链路可以包括使用被配置为携带大量数据但具有高等待时间的光纤电缆的高延迟/高带宽链路。通信链路还可以包括使用无线电波的天波传播实现的低延迟/低带宽链路，并且被配置为在地球表面的大部分地区具有较低延迟的较小体积的数据。两个通信链接可以一起使用以协调诸如买卖金融工具的各种活动。

4. 发明申请

US20150091700A1 Backscatter interrogators, communication systems and backscatter communication methods 审中-公开
公开(公告)号：US20150091700A1
公开(公告)日：2015-04-02
申请号：US14507699
申请日：2014-10-06
申请人： Round Rock Research, LLC
发明人： David K. Ovard , Roy B. Greeff
IPC分类号： G06K7/10
CPC分类号： G06K7/10366 , G06K7/0008 , G06K19/0723 , H01Q1/2208 , H04B1/707 , H04B7/22 , H04J13/0022
摘要： The present invention provides backscatter interrogators, communication systems and backscatter communication methods. According to one aspect of the present invention, a backscatter interrogator includes a data path configured to communicate a data signal; a signal generator configured to generate a carrier signal; and a modulator coupled with the data path and the signal generator, the modulator being configured to spread the data signal to define a spread data signal and amplitude modulate the carrier signal using the spread data signal, the modulator being further configured to phase modulate the carrier signal.

5. 发明申请

US20130069767A1 METHODS AND APPARATUS FOR RFID TAG COMMUNICATIONS 有权
标题翻译： RFID标签通信的方法和设备
公开(公告)号：US20130069767A1
公开(公告)日：2013-03-21
申请号：US13620243
申请日：2012-09-14
申请人： David K. Ovard , Roy Greeff
发明人： David K. Ovard , Roy Greeff
IPC分类号： G06K19/07
CPC分类号： G06K7/10366 , G06K7/0008 , G06K19/0723 , H01Q1/2208 , H04B1/707 , H04B7/22 , H04J13/0022
摘要： The present invention provides backscatter interrogators, communication systems and backscatter communication methods. According to one aspect of the present invention, a backscatter interrogator includes a data path configured to communicate a data signal; a signal generator configured to generate a carrier signal; and a modulator coupled with the data path and the signal generator, the modulator being configured to spread the data signal to define a spread data signal and amplitude modulate the carrier signal using the spread data signal, the modulator being further configured to phase modulate the carrier signal.
摘要翻译：本发明提供反向散射询问器，通信系统和后向散射通信方法。根据本发明的一个方面，反向散射询问器包括被配置为传送数据信号的数据路径; 信号发生器，被配置为产生载波信号; 以及与所述数据路径和所述信号发生器耦合的调制器，所述调制器被配置为扩展所述数据信号以限定扩展数据信号并且使用所述扩展数据信号对所述载波信号进行幅度调制，所述调制器还被配置为对所述载波进行相位调制信号。

6. 发明授权

US06459726B1 Backscatter interrogators, communication systems and backscatter communication methods 失效
标题翻译：反向散射询问器，通信系统和反向散射通信方法
公开(公告)号：US06459726B1
公开(公告)日：2002-10-01
申请号：US09066610
申请日：1998-04-24
申请人： David K. Ovard , Roy Greeff
发明人： David K. Ovard , Roy Greeff
IPC分类号： H04B138
CPC分类号： G06K7/10366 , G06K7/0008 , G06K19/0723 , H01Q1/2208 , H04B1/707 , H04B7/22 , H04J13/0022
摘要： The present invention provides backscatter interrogators, communication systems and backscatter communication methods. According to one aspect of the present invention, a backscatter interrogator includes a data path configured to communicate a data signal; a signal generator configured to generate a carrier signal; and a modulator coupled with the data path and the signal generator, the modulator being configured to spread the data signal to define a spread data signal and amplitude modulate the carrier signal using the spread data signal, the modulator being further configured to phase modulate the carrier signal.
摘要翻译：本发明提供反向散射询问器，通信系统和后向散射通信方法。根据本发明的一个方面，反向散射询问器包括被配置为传送数据信号的数据路径; 信号发生器，被配置为产生载波信号; 以及与所述数据路径和所述信号发生器耦合的调制器，所述调制器被配置为扩展所述数据信号以限定扩展数据信号并且使用所述扩展数据信号对所述载波信号进行幅度调制，所述调制器还被配置为对所述载波进行相位调制信号。

7. 发明授权

US4032884A Adaptive trunk data transmission system 失效
标题翻译：自适应传输数据传输系统
公开(公告)号：US4032884A
公开(公告)日：1977-06-28
申请号：US660967
申请日：1976-02-24
申请人： Frank S. Gutleber
发明人： Frank S. Gutleber
IPC分类号： H04B7/22 , G08C25/00
CPC分类号： H04B7/22
摘要： An adaptive trunk data transmission system in which data bits to be communicated are not transmitted during certain fade durations of a multi-channel propagation characteristic, but are delayed instead, until the fade interval is over, when they are then transmitted.

8. 发明授权

US4030033A Method and apparatus for transmitting messages to and from remote locations 失效
标题翻译：用于向远程位置发送消息的方法和装置
公开(公告)号：US4030033A
公开(公告)日：1977-06-14
申请号：US586538
申请日：1975-06-13
申请人： Klaus Bibl , Bodo W. Reinisch
发明人： Klaus Bibl , Bodo W. Reinisch
IPC分类号： H04B7/22 , H04L23/02 , H04B7/02
CPC分类号： H04B7/22 , H04L23/02
摘要： A method and apparatus for transmitting a message, in digital form, to or from a remote location. In a transmitter, a sequence of predetermined multiple-bit phase codes corresponding to the individual characters in the message phase modulate a carrier wave which also shifts frequency. At a receiving station, the various modulated carrier waves propagated through a dispersive medium constitute incoming signals with both frequency and range diversity. The receiver transforms the incoming signals into a sequence of quadrature component signals which it correlates with the multiple-bit phase code sequences to yield the digital representation of a transmitted message character at the receiving station.
摘要翻译：一种用于以数字形式向或远离位置发送消息的方法和装置。在发射机中，与消息相位中的各个字符对应的预定的多位相位码序列调制也移动频率的载波。在接收站，通过分散介质传播的各种调制载波构成了具有频率和范围分集的输入信号。接收机将输入信号变换为正交分量信号序列，其与多位相位码序列相关，以产生在接收站处发送的消息字符的数字表示。

9. 发明授权

US3766478A Backscatter reduction apparatus 失效
标题翻译：后排减压装置
公开(公告)号：US3766478A
公开(公告)日：1973-10-16
申请号：US3766478D
申请日：1972-09-08
申请人： US NAVY
发明人： LOWRY R
IPC分类号： H04B7/185 , H04B7/22 , H04B7/14
CPC分类号： H04B7/18543 , H04B7/22
摘要： Apparatus for reducing F1/F1 repeater backscatter without significantly changing the desired received signal. A replica signal of the desired transmitted signal on center frequency F1 is transmitted on center frequency F2 to produce a received signal on frequency F2 which is predominantly due to backscatter from the transmission on F2 and which has a very high correlation with the backscatter from the desired transmitted signal on F1. The characteristics of the backscatter on F2 are accurately measured and then correlated to the backscatter on F1 whereby it can be reduced or minimized with relatively minor change of the desired received signal.
摘要翻译：用于减少F1 / F1中继器反向散射而不显着改变所需接收信号的装置。中心频率F1上期望的发送信号的复制信号在中心频率F2上发送，以产生频率为F2的接收信号，主要是由于F2上的传输反向散射，并且与来自期望的反向散射具有非常高的相关性 F1发射信号。 F2上的反向散射的特性被精确测量，然后与F1上的反向散射相关，由此可以通过期望的接收信号的相对小的改变来减小或最小化反向散射。

10. 发明授权

US3537008A Communications system incorporating means for combatting multipath interference 失效
标题翻译：用于组合多路干扰的通信系统
公开(公告)号：US3537008A
公开(公告)日：1970-10-27
申请号：US3537008D
申请日：1967-05-09
申请人： TRW INC
发明人： LAKATOS EMORY
IPC分类号： H04B7/22 , H04B7/02
CPC分类号： H04B7/22

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