公开(公告)号：US10075820B2

公开(公告)日：2018-09-11

申请号：US15826431

申请日：2017-11-29

Applicant: Derek D. Kumar

Inventor： Derek D. Kumar

IPC: H04L29/06 ,  H04W4/06 ,  H04W12/06 ,  H04W4/80 ,  H04W12/10

CPC classification number: H04W4/06 ,  H04L63/123 ,  H04W4/80 ,  H04W12/00502 ,  H04W12/06 ,  H04W12/10

Abstract: Using various embodiments, methods and systems for secure Bluetooth Low Energy communications, in an unconnected state, are described herein. In one embodiment, conventional BLE transmitting device data can be supplemented with authentication information, including a message authentication field which enables receivers to determine if the received beacon/transmitted BLE peripheral data is genuine. In another embodiment, the authentication data can also include a time varying value field in order to prevent unintentional acceptance of transmitting device data from unauthorized replicated BLE peripherals. In one embodiment, the transmitting device computes an authentication tag using at least a secret key known to the receiving device and transmits the authentication tag to the receiving device. The receiving device can compute an authentication value using the secret key and other transmitting device information and determine if the transmitting device data is genuine by comparing the computed authentication value and the received the authentication tag.

公开(公告)号：US20160100311A1

公开(公告)日：2016-04-07

申请号：US14875657

申请日：2015-10-05

Applicant: Derek D. Kumar

Inventor： Derek D. Kumar

IPC: H04W12/04 ,  H04L29/06 ,  H04W4/06 ,  H04W4/00 ,  H04W12/06

CPC classification number: H04W4/06 ,  H04L63/123 ,  H04W4/80 ,  H04W12/06 ,  H04W12/10

Abstract: Using various embodiments, methods and systems for secure Bluetooth Low Energy communications, in an unconnected state, are described herein. In one embodiment, conventional BLE transmitting device data can be supplemented with authentication information, including a message authentication field which enables receivers to determine if the received beacon/transmitted BLE peripheral data is genuine. In another embodiment, the authentication data can also include a time varying value field in order to prevent unintentional acceptance of transmitting device data from unauthorized replicated BLE peripherals. In one embodiment, the transmitting device computes an authentication tag using at least a secret key known to the receiving device and transmits the authentication tag to the receiving device. The receiving device can compute an authentication value using the secret key and other transmitting device information and determine if the transmitting device data is genuine by comparing the computed authentication value and the received the authentication tag.

Abstract translation: 使用各种实施例，这里描述处于未连接状态的安全蓝牙低能量通信的方法和系统。 在一个实施例中，传统的BLE发送设备数据可以补充认证信息，包括消息认证字段，其使得接收机能够确定接收到的信标/发送的BLE外设数据是否是真实的。 在另一个实施例中，认证数据还可以包括时变值字段，以便防止未经授权的复制BLE外设对发送设备数据的无意接受。 在一个实施例中，发送设备至少使用接收设备已知的秘密密钥来计算认证标签，并将认证标签发送到接收设备。 接收设备可以使用秘密密钥和其他发送设备信息来计算认证值，并通过比较计算出的认证值和接收到的认证标签来确定发送设备数据是否是真实的。

公开(公告)号：US20130254614A1

公开(公告)日：2013-09-26

申请号：US13789671

申请日：2013-03-07

Applicant: Derek D. Kumar ,  Gregg Brian Levin

Inventor： Derek D. Kumar ,  Gregg Brian Levin

IPC: H04L1/00

CPC classification number: H04L1/0078 ,  H04L1/1887 ,  H04L63/0428 ,  H04L2001/0093

Abstract: A system and method for error tolerant content delivery is provided. A data file for transmission including metadata and data is received. The metadata includes mandatory portions and optional portions. The file is parsed into packets and transmitted as a data stream to a plurality of receiver devices, which may look for transmission errors in the control data of the data stream. Data streams comprising errors are discarded; otherwise, the receiver device converts the data stream into the native file format and stores it. The system may bifurcate each data file into the common encrypted content and the uniquely encrypted portion. The commonly encrypted portion of the file may be transmitted to a plurality of receiver devices using a multicast transmission medium, and the relatively small uniquely encrypted portions may be transmitted using a unicast method to each receiver individually. The receiver device may then reconstitute the DRM data file.

Abstract translation: 提供了一种用于容错内容传送的系统和方法。 接收包括元数据和数据在内的用于传输的数据文件。 元数据包括强制部分和可选部分。 该文件被解析成分组并作为数据流传输到多个接收机设备，其可以在数据流的控制数据中查找传输错误。 丢弃包含错误的数据流; 否则，接收机设备将数据流转换为本地文件格式并将其存储。 该系统可以将每个数据文件分成公共加密内容和唯一加密部分。 可以使用多播传输介质将文件的通常加密的部分发送到多个接收机设备，并且可以使用单播方法将相对较小的唯一加密部分单独发送到每个接收机。 然后，接收机设备可以重构DRM数据文件。

公开(公告)号：US06351500B2

公开(公告)日：2002-02-26

申请号：US09466885

申请日：1999-12-20

Applicant: Derek D. Kumar

Inventor： Derek D. Kumar

IPC: H04L2702

CPC classification number: H03D5/00 ,  H03C5/00 ,  H04H20/30 ,  H04H20/36 ,  H04H2201/186

Abstract: A method and system are provided for the transmission and reception of a composite radio-frequency (RF) signal including a supplemental signal, preferably representing encoded digital information, together with an analog signal which represents monophonic analog audio in the AM-band. The analog monophonic component of the composite signal may be received by conventional AM-band audio receivers. In certain embodiments, the analog signal is a single-sideband large-carrier or vestigial-sideband large-carrier signal, and the composite RF signal includes a digital signal whose spectrum is substantially confined in one inner sideband. In other embodiments, a baseband digital signal is combined with an analog monophonic audio signal and transmitted in upper inner and lower inner sidebands using nonlinear compatible quadrature amplitude modulation (NC-QAM). Additional digital signals' spectrum occupies the lower outer and upper outer sidebands. In certain embodiments, for each transmitted codeword, part of the codeword information is replicated by modulated signals in both the upper outer and lower outer sidebands, preferably with diversity delay between the outer sideband signals.

Abstract translation: 提供了一种方法和系统，用于发送和接收包括补充信号的复合射频（RF）信号，优选地表示编码的数字信息，以及在AM频带中表示单声道模拟音频的模拟信号。 复合信号的模拟单声道分量可以由传统的AM频带音频接收机接收。 在某些实施例中，模拟信号是单边带大载波或残留边带大载波信号，并且复合RF信号包括其频谱基本上限制在一个内边带中的数字信号。 在其他实施例中，基带数字信号与模拟单声道音频信号组合，并使用非线性兼容正交幅度调制（NC-QAM）在上内侧和下侧边带中传输。 附加的数字信号频谱占据了较低的外侧和外侧边带。 在某些实施例中，对于每个发送的码字，码字信息的一部分由上外外边带和下外边带中的调制信号复制，优选地在外边带信号之间具有分集延迟。

公开(公告)号：US6005894A

公开(公告)日：1999-12-21

申请号：US832813

申请日：1997-04-04

Applicant: Derek D. Kumar

Inventor： Derek D. Kumar

IPC: H03C5/00 ,  H03D5/00 ,  H04H20/30 ,  H04H20/36 ,  H04L27/02

CPC classification number: H03D5/00 ,  H03C5/00 ,  H04H20/36 ,  H04H20/30 ,  H04H2201/186

Abstract: A method and system are provided for the transmission and reception of a composite radio-frequency (RF) signal including a supplemental signal, preferably representing encoded digital information, together with an analog signal which represents monophonic analog audio in the AM-band. The analog monophonic component of the composite signal may be received by conventional AM-band audio receivers. In certain embodiments, the analog signal is a single-sideband large-carrier or vestigial-sideband large-carrier signal, and the composite RF signal includes a digital signal whose spectrum is substantially confined in one inner sideband. In other embodiments, a baseband digital signal is combined with an analog monophonic audio signal and transmitted in upper inner and lower inner sidebands using nonlinear compatible quadrature amplitude modulation (NC-QAM). Additional digital signals' spectrum occupies the lower outer and upper outer sidebands. In certain embodiments, for each transmitted codeword, part of the codeword information is replicated by modulated signals in both the upper outer and lower outer sidebands, preferably with diversity delay between the outer sideband signals.

Abstract translation: 提供了一种方法和系统，用于发送和接收包括补充信号的复合射频（RF）信号，优选地表示编码的数字信息，以及在AM频带中表示单声道模拟音频的模拟信号。 复合信号的模拟单声道分量可以由传统的AM频带音频接收机接收。 在某些实施例中，模拟信号是单边带大载波或残留边带大载波信号，并且复合RF信号包括其频谱基本上限制在一个内边带中的数字信号。 在其他实施例中，基带数字信号与模拟单声道音频信号组合，并使用非线性兼容正交幅度调制（NC-QAM）在上内侧和下侧边带中传输。 附加的数字信号频谱占据了较低的外侧和外侧边带。 在某些实施例中，对于每个发送的码字，码字信息的一部分由上外外边带和下外边带中的调制信号复制，优选地在外边带信号之间具有分集延迟。

公开(公告)号：US5956624A

公开(公告)日：1999-09-21

申请号：US274140

申请日：1994-07-12

Applicant: Bill J. Hunsinger ,  Derek D. Kumar

Inventor： Bill J. Hunsinger ,  Derek D. Kumar

IPC: H04B1/40 ,  H04B1/707 ,  H04H20/30 ,  H04H20/33 ,  H04J9/00 ,  H04J11/00 ,  H04J13/00 ,  H04J13/12 ,  H04L5/02 ,  H04L27/26 ,  H04B7/26

CPC classification number: H04L27/2601 ,  H04B1/406 ,  H04B1/707 ,  H04H20/30 ,  H04H20/33 ,  H04J13/004 ,  H04J13/12 ,  H04J9/00 ,  H04L5/023 ,  H04H2201/17 ,  H04H2201/183 ,  H04J2013/0037

Abstract: Apparatus and method for transmitting a digitized wideband signal robust to multipath degradation and intersymbol interference within a predetermined broadcast band. A basis set of wideband mutually orthogonal pseudorandom basis signal waveforms of substantially equal length and having predetermined autocorrelation values and a predetermined spectral shape are generated. The length of the waveforms in the set represents a baud. The wideband waveforms of the basis set are data modulated so as to define digital data. The basis set substantially maintains the predetermined spectral shape during the modulation.

Abstract translation: 用于在预定广播频带内发送鲁棒的多径衰落和码间干扰的数字化宽带信号的装置和方法。 产生具有基本相等长度并具有预定自相关值和预定光谱形状的宽带相互正交的伪随机基准信号波形的基本集合。 集合中波形的长度表示波特率。 基准集合的宽带波形被数据调制以便定义数字数据。 该基组在调制期间基本保持预定的光谱形状。

公开(公告)号：US5825807A

公开(公告)日：1998-10-20

申请号：US554364

申请日：1995-11-06

Applicant: Derek D. Kumar

Inventor： Derek D. Kumar

IPC: H04B1/707 ,  H04J11/00 ,  H04L1/00 ,  H04L27/227 ,  H04B1/69

CPC classification number: H04L1/0071 ,  H04B1/707 ,  H04J11/0023 ,  H04L1/004 ,  H04L27/2278

Abstract: A method and system are provided for the synchronous transmission and reception of multiplexed digital signals such as spread spectrum. The system uses biorthogonal modulation of a plurality of orthogonal signals, preferably wideband, together with simultaneous orthogonal multiplexing. The method is found to significantly mitigate the crosscorrelation interference that is caused by the interaction between the multiplexed signals. The system transmits a lesser number of multiplexed orthogonal signals than would be required in the corresponding antipodal system, thereby reducing the crosscorrelation interference, while maintaining the same information throughput. The bit error rate of the system is reduced. The method combines aspects of unequal error protection (UEP) error correction coding (ECC) with a receiver architecture for biorthogonal signals. The system exhibits a signal-to-noise ratio (SNR) improvement in the detection of some fraction of the encoded digital data bits. This facilitates the use of additional error control redundancy in the remaining data bits, which results in an overall improvement in the decoded error rate performance.

Abstract translation: 提供了用于同步发送和接收诸如扩展频谱的复用数字信号的方法和系统。 该系统使用多个正交信号，优选宽带的双正交调制，以及同时正交复用。 发现该方法显着地减轻由多路复用信号之间的相互作用引起的互相关干扰。 系统发送比相应的对称系统中要求少的多路复用正交信号，从而在保持相同信息吞吐量的同时减少互相关干扰。 系统的误码率降低。 该方法将不平等误差保护（UEP）纠错编码（ECC）与用于双正交信号的接收机架构相结合。 该系统在检测编码的数字数据位的一部分中表现出信噪比（SNR）的改善。 这有助于在剩余数据位中使用额外的错误控制冗余，这导致解码错误率性能的总体改进。

公开(公告)号：US5748677A

公开(公告)日：1998-05-05

申请号：US586214

申请日：1996-01-16

Applicant: Derek D. Kumar

Inventor： Derek D. Kumar

IPC: H04J1/12 ,  H04L1/00 ,  H04L7/04 ,  H04B15/00

CPC classification number: H04J1/12 ,  H04L1/004 ,  H04L7/041

Abstract: A method and system are provided for the transmission and reception of a varying reference signal together with a data-modulated signal in a communication system. The reference signal is modulated by multiplying it by a predetermined reference value sequence and is summed together with the data-modulated signal in the transmitter system. The reference signal and reference value sequence generators are identically embodied in both the transmitter and receiver systems. The receiver system determines an estimate of the transmitted reference signal by canceling the effect of the reference signal modulation. The estimated reference signal may be removed from the received signal prior to demodulation of the data-modulated signal by subtracting the unmodulated reference signal estimate, which is multiplied in the receiver system with the known reference value sequence.

Abstract translation: 提供了一种用于在通信系统中发送和接收变化的参考信号以及数据调制信号的方法和系统。 通过将参考信号乘以预定的参考值序列来调制参考信号，并将其与发射机系统中的数据调制信号相加。 参考信号和参考值序列发生器同样体现在发射机和接收机系统中。 接收机系统通过消除参考信号调制的影响来确定所传输的参考信号的估计。 在解调数据调制信号之前，可以通过减去在接收机系统中以已知的参考值序列相乘的未调制的参考信号估计，来将所估计的参考信号从接收信号中去除。

公开(公告)号：US5745525A

公开(公告)日：1998-04-28

申请号：US485599

申请日：1995-06-07

Applicant: Bill J. Hunsinger ,  Derek D. Kumar

Inventor： Bill J. Hunsinger ,  Derek D. Kumar

IPC: H04B1/40 ,  H04B1/707 ,  H04H20/30 ,  H04H20/33 ,  H04J9/00 ,  H04J11/00 ,  H04J13/00 ,  H04J13/12 ,  H04L5/02 ,  H04L27/26 ,  H04B15/00

CPC classification number: H04L27/2601 ,  H04B1/406 ,  H04B1/707 ,  H04H20/30 ,  H04H20/33 ,  H04J13/004 ,  H04J13/12 ,  H04J9/00 ,  H04L5/023 ,  H04H2201/17 ,  H04H2201/183 ,  H04J2013/0037

Abstract: A system and method for transmitting digital information through a medium such as atmospheric free-space includes a transmitter which generates a signal based on a basis set of mutually orthogonal, spectrally-shaped, sequences of substantially equal length and having predetermined autocorrelation values. The sequences may resemble noise in at least some of their characteristics. The orthogonality or cross-correlation characteristics, the autocorrelation characteristics and the resemblance to noise are due to features derived from sequences of pseudo-random numbers which themselves resemble noise in at least some of their characteristics. The waveform set based on the sequences is modulated digitally. The modulated set may be summed together along with a wideband reference signal of reduced amplitude and optionally an FM analog signal to form a composite signal which is broadcast typically through free space to at least one receiver. The receiver separates the analog FM signal from the digital signal and thereafter demodulates the digital data-carrying waveforms and outputs a stream of digital data. It has been determined to be resistant to multipath degradation.

公开(公告)号：US20170347245A1

公开(公告)日：2017-11-30

申请号：US15633622

申请日：2017-06-26

Applicant: Derek D. Kumar

Inventor： Derek D. Kumar

IPC: H04W4/06 ,  H04W12/06 ,  H04W4/00 ,  H04W12/10 ,  H04L29/06

CPC classification number: H04W4/06 ,  H04L63/123 ,  H04W4/80 ,  H04W12/06 ,  H04W12/10

Abstract: Using various embodiments, methods and systems for secure Bluetooth Low Energy communications, in an unconnected state, are described herein. In one embodiment, conventional BLE transmitting device data can be supplemented with authentication information, including a message authentication field which enables receivers to determine if the received beacon/transmitted BLE peripheral data is genuine. In another embodiment, the authentication data can also include a time varying value field in order to prevent unintentional acceptance of transmitting device data from unauthorized replicated BLE peripherals. In one embodiment, the transmitting device computes an authentication tag using at least a secret key known to the receiving device and transmits the authentication tag to the receiving device. The receiving device can compute an authentication value using the secret key and other transmitting device information and determine if the transmitting device data is genuine by comparing the computed authentication value and the received the authentication tag.