专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4146889A Method and apparatus for sidelobe reduction in radar 失效
标题翻译：雷达雷达减少的方法和装置
公开(公告)号：US4146889A
公开(公告)日：1979-03-27
申请号：US219227
申请日：1972-01-20
申请人： Lawrence E. Brennan , Irving S. Reed , Peter Swerling
发明人： Lawrence E. Brennan , Irving S. Reed , Peter Swerling
IPC分类号： G01S7/28 , H01Q3/26 , G01S3/38 , G01S1/02
CPC分类号： H01Q3/2629 , G01S7/2813
摘要： In a system for reducing sidelobes in adaptive receiving array antennas, an auxiliary signal is radiated through an omnidirectional antenna collocated with the phase center of an adaptive array antenna. The auxiliary signal is so transmited as to form a probe or pilot beam with a notch in the main-beam direction by transmitting through both the omnidirectional and the array antenna simultaneously. The relative phases of both antennas are controlled to obtain near-zero radiation in the main-beam direction. Adaptive control loops receive returns from the probe beam and adjust the weights of the receiving array antenna. The receiving array weights are used to form a low sidelobe antenna pattern for reception of the main radar signal, which is transmitted with a directional pattern. Either time or frequency separation may be used to distinguish the probe beam from the main beam.

2. 发明授权

US5600324A Keyless entry system using a rolling code 失效
标题翻译：无钥匙进入系统使用滚动码
公开(公告)号：US5600324A
公开(公告)日：1997-02-04
申请号：US609093
申请日：1996-02-29
申请人： Irving S. Reed , Xiaowei Yin , Xuemin Chen
发明人： Irving S. Reed , Xiaowei Yin , Xuemin Chen
IPC分类号： G07C9/00 , G08C19/12
CPC分类号： G07C9/00182 , G07C9/00817 , H04L9/0891 , H04L9/3228 , G07C2009/00253 , G07C2009/00769 , G07C2209/06 , H04L2209/84
摘要： A keyless entry system which employs an identification code for each transmitter, a key sequence number, and a rolling code generated by a polynomial equation ensure unauthorized access. The system provides for resynchronization in the event of battery replacement or power failure. The system accommodates activation of a transmitter and incrementation of the rolling code when it is out of range of the receiver. This system further accommodates replacement of lost or stolen keys with a higher priority key, which then prevents access by the lost or stolen transmitter.
摘要翻译：一个无钥匙进入系统，其采用每个发射机的识别码，密钥序列号和由多项式方程式生成的滚动码确保未经授权的访问。该系统在电池更换或电源故障的情况下提供重新同步。当系统超出接收机的范围时，该系统适应发射机的激活和滚动码的增加。该系统还可以用较高优先级的密钥替换丢失或被盗的密钥，然后阻止丢失或被盗的发射机的接入。

3. 发明授权

US4845728A VLSI binary updown counter 失效
标题翻译： VLSI二进制递减计数器
公开(公告)号：US4845728A
公开(公告)日：1989-07-04
申请号：US143434
申请日：1988-01-13
申请人： Trieu-Kie Truong , In-Shek Hsu , Irving S. Reed
发明人： Trieu-Kie Truong , In-Shek Hsu , Irving S. Reed
IPC分类号： H03K23/44
CPC分类号： H03K23/44
摘要： A pipeline binary updown counter is comprised of simple stages that may be readily replicated. Each stage is defined by the Boolean logic equationA.sub.n (t)=A.sub.n (t-1).sym.[(U.multidot.P.sub.n)+(D.multidot.Q.sub.n)]where A.sub.n (t) denotes the value of the nth bit at time t. The input to the counter has three values represented by two binary signals U and D such that if both are zero, the input is zero, if U=0 and D=1, the input is -1 and if U=1 and D=0, the input is +1. P.sub.n represents a product of A.sub.k 's for 1.ltoreq.k.ltoreq.-1, while Q.sub.n represents the product of A's for 1.ltoreq.k.ltoreq.n-1, where A.sub.k is the complement of A.sub.k and P.sub.n and Q.sub.n are expressed as the following two equationsP.sub.n =A.sub.n-1 A.sub.n-2 . . . A.sub.1Q.sub.n =A.sub.n-1 A.sub.n-2 . . . A.sub.1which can be written in recursion form asP.sub.n =P.sub.n-1 .multidot.A.sub.n-1Q.sub.n =Q.sub.n-1 .multidot.A.sub.n-1with the initial values P.sub.1 =1 and Q.sub.1 =1.
摘要翻译：管道二进制递减计数器由易于复制的简单阶段组成。每个阶段由布尔逻辑方程An（t）= An（t-1）（+）[（UxPn）+（DxQn）]定义，其中An（t）表示时间t的第n位的值。计数器的输入具有由两个二进制信号U和D表示的三个值，使得如果两者都为零，则输入为零，如果U = 0且D = 1，则输入为-1，如果U = 1且D = 0，输入为+1。 Pn表示1的k i = 1的乘积，而Q n表示1

4. 发明授权

US07061970B2 Self-synchronizing adaptive multistage receiver for wireless communication systems 失效
公开(公告)号：US07061970B2
公开(公告)日：2006-06-13
申请号：US09883835
申请日：2001-06-18
申请人： Irving S. Reed , Piyapong Thanyasrisung , J. Scott Goldstein , T. K. Truong
发明人： Irving S. Reed , Piyapong Thanyasrisung , J. Scott Goldstein , T. K. Truong
IPC分类号： H04B1/69
CPC分类号： H04B1/7105 , H04B1/70718
摘要： The present invention discloses an adaptive near-far resistant receiver for wireless communication systems, such as, asynchronous DS-CDMA systems, without the use of prior synchronization. The only requirement is knowledge of the spreading code of the desired user. Also there is no need of a training period or of data-free observations. In one aspect the present system describes a method and system for filtering of an asynchronous wireless signal comprising the steps of receiving a data vector; of using the received data vector to update the weight coefficients of an adaptive filter without a prior knowledge of synchronization and without a need for a separate training period or data free observations.In another aspect, the present system describes an adaptive near-far resistant receiver for an asynchronous wireless systems comprising means for receiving a data vector; means for; using the received data vector to update weight coefficients of an adaptive filter, and means for iterative multistage decomposition updating of the filter coefficients. In one embodiment the receiver uses an adaptive filter bank comprising a plurality of adaptive filters, wherein each filter corresponds to at least one different sampling time. An estimate of the timing is obtained from the maximum of a set of sequential outputs from the filter bank, The output that yields the maximum is preferably used to demodulate the information bit.

5. 发明授权

US5822456A Optimal spline interpolation for image compression 失效
标题翻译：图像压缩的最佳样条插值
公开(公告)号：US5822456A
公开(公告)日：1998-10-13
申请号：US275945
申请日：1994-07-14
申请人： Irving S. Reed , Alfred C. Yu
发明人： Irving S. Reed , Alfred C. Yu
IPC分类号： H04N7/26 , G06T9/00 , H03M7/30 , H04N1/41 , G06K9/36
CPC分类号： G06T9/001
摘要： A computationally fast, effective method for compressing digital images uses an optimized subsampling process. A set of spatially overlapping spline functions is used as a basis onto which the image data are projected by use of a least-mean-squares criterion. The specified processes can be implemented for compressing and interpolating digital data arrays of N dimensions. Linear, planar and hyperplanar spline functions allow convenient, fast and efficient closed-form optimal compression, which process is easily incorporated into existing digital processing systems. A key advantage of the disclosed method is the fast coding/reconstruction speed, because it involves only FFT or convolution types of processors.
摘要翻译：用于压缩数字图像的计算快速有效的方法使用优化的二次采样过程。使用一组空间重叠的样条函数作为使用最小均方准则投影图像数据的基础。可以实现指定的处理以压缩和内插N维数字数据。线性，平面和超平面样条函数允许方便，快速和高效的封闭形式的最佳压缩，该过程很容易并入现有的数字处理系统。所公开方法的一个关键优点是快速编码/重建速度，因为它仅涉及FFT或卷积类型的处理器。

6. 发明授权

US06768817B1 Fast and efficient computation of cubic-spline interpolation for data compression 失效
标题翻译：快速高效地计算用于数据压缩的三次样条插值
公开(公告)号：US06768817B1
公开(公告)日：2004-07-27
申请号：US09654383
申请日：2000-09-01
申请人： Tsen Chung Cheng , Truieu K. Truong , Irving S. Reed , Lung J. Wang , Wen S. Hsieh
发明人： Tsen Chung Cheng , Truieu K. Truong , Irving S. Reed , Lung J. Wang , Wen S. Hsieh
IPC分类号： G06K936
CPC分类号： H04N19/59 , G06F17/175 , H04N19/80
摘要： A fast and efficient method and system for computation of cubic-spline interpolation for data compression is described. In one aspect, the present invention is a method and system for defining a cubic-spline filter; correlating the filter with the signal to obtain a correlated signal; autocorrelating the filter to obtain autocorrelated filter coefficients; computing a transform of the correlated signal and the autocorrelated filter coefficients; dividing the transform of the correlated signal by the transform of the autocorrelated filter coefficients to obtain a transform of a compressed signal; and computing an inverse transform of the transform of the compressed signal to obtain the compressed signal. The signal, the filter, and the transforms may be one dimensional or two dimensional. Further, the transforms may be a fast Fourier transform (FFT) or a Winograd discrete Fourier transform (WDFT) with an overlap-save scheme. Also, a zonal filter may be defined to simplify the steps of correlating and autocorrelating.
摘要翻译：描述了用于计算数据压缩的三次样条插值的快速有效的方法和系统。一方面，本发明是用于定义三次样条滤波器的方法和系统; 将滤波器与信号相关以获得相关信号; 自相关滤波器获得自相关滤波器系数; 计算相关信号和自相关滤波器系数的变换; 通过自相关滤波器系数的变换来划分相关信号的变换，以获得压缩信号的变换; 并计算压缩信号的变换的逆变换以获得压缩信号。信号，滤波器和变换可以是一维或二维的。此外，变换可以是具有重叠保存方案的快速傅立叶变换（FFT）或Winograd离散傅里叶变换（WDFT）。此外，可以定义带状滤波器以简化相关和自相关的步骤。

7. 发明授权

US4907233A VLSI single-chip (255,223) Reed-Solomon encoder with interleaver 失效
标题翻译：具有交错器的VLSI单芯片（255,223）Reed-Solomon编码器
公开(公告)号：US4907233A
公开(公告)日：1990-03-06
申请号：US195226
申请日：1988-05-18
申请人： Leslie J. Deutsch , In-Shek Hsu , Trieu-Kie Truong , Irving S. Reed
发明人： Leslie J. Deutsch , In-Shek Hsu , Trieu-Kie Truong , Irving S. Reed
IPC分类号： H03M13/15 , H03M13/29
CPC分类号： H03M13/159 , H03M13/1515 , H03M13/27 , H03M13/2903 , H03M13/293 , H03M13/2936
摘要： A concatenated coding system consisting of a (255,223) Reed-Solomon outer code and a convolutional inner code is provided with either a block of preinterleaved frames or an interleaver of frames in a block of data symbols to be coded in the outer decoder. By interleaving, errors are constrained to occur in only one symbol in a frame, which can be corrected by the Reed-Solomon outer decoder. After transmission and inner decoding, the data symbols are deinterleaved for outer decoding. Instead of preinterleaving at the source, or interleaving before inner encoding, the frames of data symbols may be interleaved at the receiver after inner decoding and then combined with the inner decoded check symbols for outer decoding. The outer encoder is a bit-serial Reed-Solomon encoder with programmable interleaving, and the inner decoder is a Viterbi decoder.
摘要翻译：由（255,223）里德 - 所罗门外码和卷积内码组成的级联编码系统在外解码器中提供要编码的数据符号块中的预先剪切的帧或帧的交织器。通过交错，错误被限制在帧中仅一个符号中，这可以由里德 - 所罗门外部解码器校正。在传输和内部解码之后，数据符号被去交织用于外部解码。在内部编码之前，或者在内部编码之前进行交织，而不是在内部编码之前进行交织，数据符号的帧可以在内部解码之后在接收机处进行交织，然后与用于外部解码的内部解码的检查符号组合。外部编码器是具有可编程交织的位串行里德 - 所罗门编码器，内部解码器是维特比解码器。

8. 发明授权

US5771244A Universal Reed-Solomon coder/encoder 失效
标题翻译：通用里德 - 所罗门编码器/编码器
公开(公告)号：US5771244A
公开(公告)日：1998-06-23
申请号：US208269
申请日：1994-03-09
申请人： Irving S. Reed , Chin Chi Hsu , T. K. Truong
发明人： Irving S. Reed , Chin Chi Hsu , T. K. Truong
IPC分类号： H03M13/15 , H04L1/00 , G06F11/10
CPC分类号： H04L1/0057 , H03M13/151 , H04L1/0043 , H04L1/0052 , H04L1/0065
摘要： A Reed-Solomon encoding and decoding system is described which uses the decoder as an encoder. The input bit is formed into a codeword having all parity symbols marked as erasures. The decoder decodes this codeword by inputting the proper parity information. Various techniques of operating a preferred Reed-Solomon coder over the Galois Field GF(257) are also described. Special calculation load reduction techniques over GF(257) and GF(256) are also described.
摘要翻译：描述了使用解码器作为编码器的里德 - 所罗门编码和解码系统。输入位形成为具有标记为擦除的所有奇偶校验符号的码字。解码器通过输入适当的奇偶校验信息对该码字进行解码。还描述了在Galois Field GF（257）上操作优选的Reed-Solomon编码器的各种技术。还描述了GF（257）和GF（256）上的特殊计算负载削减技术。

9. 发明授权

US5349459A Secure remote control system 失效
标题翻译：安全遥控系统
公开(公告)号：US5349459A
公开(公告)日：1994-09-20
申请号：US884971
申请日：1992-05-18
申请人： Irving S. Reed
发明人： Irving S. Reed
IPC分类号： G08C19/24 , H04B10/02
CPC分类号： H04B10/00 , G08C19/24
摘要： A vehicle access transmitter and receiver pair which cooperate to implement a code transmission strategy which requires a minimum amount of energy thereby accomplishing maximum battery life while achieving operations secure from unauthorized access. The transmitter produces a string of start-and-stop pulse pairs which are each spaced in a timed interval so as to represent unique values. In operation the transmitter generates a sequence of four start-and-stop pulses with the duration of start-and-stop pulse pair proportional to the respective key code. The receiver detects the pulses and supplies them to a code comparison circuit. A lock code is stored and supplied to the code comparison circuit. During the reception time between each start-and-stop pulse in a pair, the demodulator counts up sequentially producing a vector sum of the lock code and the received code value. If the vector sum of all code valves stored and received equals zero, then a VALID signal is generated by the code comparison circuit permitting access to the vehicle via the selected path, i.e., Door, Trunk, etc.
摘要翻译：一种车辆接入发射机和接收机对，其协作以实现代码传输策略，其需要最小量的能量，从而实现最大电池寿命，同时实现安全的未经授权的访问的操作。发射机产生一串起始和停止脉冲对，它们以定时间隔隔开，以便表示唯一的值。在操作中，发射机产生四个起始和停止脉冲的序列，其中起始和停止脉冲对的持续时间与相应的键码成比例。接收机检测脉冲并将其提供给代码比较电路。锁码被存储并提供给代码比较电路。在成对的每个起始和停止脉冲之间的接收时间期间，解调器顺序计数，产生锁定码和接收的码值的矢量和。如果存储和接收的所有代码阀的向量和等于零，则通过代码比较电路产生允许经由所选路径访问车辆的VALID信号，即门，中继线等。

10. 发明授权

US5014131A Vector filter for optical moving target detection 失效
标题翻译：用于光学移动目标检测的矢量滤波器
公开(公告)号：US5014131A
公开(公告)日：1991-05-07
申请号：US296658
申请日：1981-08-27
申请人： Irving S. Reed , Irving Sperling , William A. Bundy
发明人： Irving S. Reed , Irving Sperling , William A. Bundy
IPC分类号： G01S11/12 , H04N5/217 , H04N5/30 , H04N5/33
CPC分类号： G01S11/12 , H04N5/2173 , H04N5/33
摘要： A clutter rejection filter for use in detecting moving targets which may be employed in a passive optical acquisition system. The filter comprises a plurality of detector elements which view an image scene. A plurality of transversal filters are individually coupled to the plurality of detector elements. Each of the transversal filters amplitude weight signals provided by the respective detector elements as a function of time, with each of the transversal filters having a predetermined impulse response. Summing circuitry is coupled to each of the transversal filters for combining the output signals provided thereby into a single output signal for the filter. The filter provides output signals which are maximized for objects traveling at a first velocity and minimized for objects traveling at a second velocity.
摘要翻译：一种用于检测可在无源光学采集系统中使用的移动目标的杂波抑制滤波器。滤波器包括多个检测图像场景的检测器元件。多个横向滤波器分别耦合到多个检测器元件。每个横向滤波器由各个检测器元件提供的幅度权重信号作为时间的函数，其中每个横向滤波器具有预定的脉冲响应。加法电路耦合到每个横向滤波器，用于将由此提供的输出信号组合成用于滤波器的单个输出信号。滤波器提供对于以第一速度行进的物体最大化的输出信号，并且对于以第二速度行进的物体最小化。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式