公开(公告)号：US5625884A

公开(公告)日：1997-04-29

申请号：US255684

申请日：1994-06-08

Applicant: Richard D. Gitlin ,  Chih-Lin I

Inventor： Richard D. Gitlin ,  Chih-Lin I

IPC: H04W68/00 ,  H04B7/00

CPC classification number: H04W68/00

Abstract: A method and apparatus providing communications between mobile units and other communications devices, is disclosed wherein, in response to a request to call a mobile unit from an originating communications device, a paging signal is sent via a global communications network and received by a mobile unit. The paging signal contains caller and callee identification codes, which are decoded by the mobile unit. A paging response signal, in the form of a reverse call setup signal, is then transmitted from the mobile unit to the originating communications device. Transmission of the paging signal is preferably stopped when a correspondence condition exists such that the caller and callee identification codes of the paging signal correspond to the caller and caller identification codes of the paging response signal.

Abstract translation: 公开了一种在移动单元和其他通信设备之间提供通信的方法和装置，其中响应于从始发通信设备呼叫移动单元的请求，经由全球通信网络发送寻呼信号并由移动单元接收 。 寻呼信号包含由移动单元解码的呼叫者和被叫者识别码。 然后，以反向呼叫建立信号的形式的寻呼响应信号从移动单元发送到始发通信设备。 当存在呼叫信号的呼叫者和被呼叫者识别码对应于呼叫者和寻呼响应信号的呼叫者识别码时，寻呼信号的发送最好停止。

公开(公告)号：US5119196A

公开(公告)日：1992-06-02

申请号：US542612

申请日：1990-06-25

Applicant: Ender Ayanoglu ,  Israel Bar-David ,  Richard D. Gitlin ,  Chih-Lin I ,  Jack H. Winters

Inventor： Ender Ayanoglu ,  Israel Bar-David ,  Richard D. Gitlin ,  Chih-Lin I ,  Jack H. Winters

IPC: H04N5/21

CPC classification number: H04N5/211

Abstract: Ghosts are canceled in received analog TV (for IDTV, EDTV, and HDTV) signals by utilizing the fact that there are short periods of time without the analog signals (the horizontal flyback interval between the lines) to process the received signal on a line-to-line basis using a finite impulse response (FIR) or an infinite impulse response (IIR) equalizer. This line-by-line processing (which can be implemented by periodic cleansing of the equalizer) overcomes the limitations of standard equalizers to allow for 40-50 dB of suppression of ghosts, even with nulls in the spectrum, as long as the ghost delay is less than the period of time without the analog signal. Furthermore, by using time inversion in combination with line-by-line processing, the stability problem of the conventional IIR equalizer is eliminated. The IIR equalizer may be implemented on a single digital integrated circuit. Alternatively, an FIR equalizer can be used which, although it may require multiple chips (i.e., more taps), can acquire and adapt to the ghosted channel more rapidly than an IIR equalizer. With line-by-line processing, FIR and IIR equalizers can eliminate any ghost with delays up to 11 .mu.sec in IDTV or EDTV. For larger delays, a standard IIR or FIR equalizer can be used as a preprocessor to eliminate small ghosts and an adaptive antenna can be used to eliminate large ghosts. Thus, with these techniques, the ghosting problem can be eliminated in all TV receivers.

公开(公告)号：US5107493A

公开(公告)日：1992-04-21

申请号：US389191

申请日：1989-08-02

Applicant: Kai Y. Eng ,  Richard D. Gitlin

Inventor： Kai Y. Eng ,  Richard D. Gitlin

IPC: H04L12/56

CPC classification number: H04L12/56

Abstract: A cross connect network is utilized in order to switch packets of information among a plurality of network nodes. Each of the plurality of network nodes generates a multiplexed data signal, where each multiplexed data signal includes several channels. The cross connect network routes the data packets based upon which channel each packet is in when it arrives from the network node, rather than based upon the address in each packet. Thus, the need to read the address and switch the packet at each switching stage in the cross connect network is eliminated.

公开(公告)号：US4924492A

公开(公告)日：1990-05-08

申请号：US171636

申请日：1988-03-22

Applicant: Richard D. Gitlin ,  Sailesh K. Rao ,  Jean-Jacques Werner ,  Nicholas Zervos

Inventor： Richard D. Gitlin ,  Sailesh K. Rao ,  Jean-Jacques Werner ,  Nicholas Zervos

IPC: H04L25/49 ,  H04L27/00 ,  H04L27/34 ,  H04M3/00 ,  H04M11/00

CPC classification number: H04L27/3438 ,  H04L25/4921

Abstract: In a telephone local loop transmission arrangement, data is communicated from the customer premises to the central office utilizing a multi-dimensional, passband signal illustratively at 480 kb/s and 1.544 Mb/s.

公开(公告)号：US4924480A

公开(公告)日：1990-05-08

申请号：US166867

申请日：1988-03-11

Applicant: Steven L. Gay ,  Richard D. Gitlin ,  John Hartung

Inventor： Steven L. Gay ,  Richard D. Gitlin ,  John Hartung

IPC: H04B14/04 ,  H04Q3/42 ,  H04Q11/04 ,  H04W88/18

CPC classification number: H04W88/181 ,  H04B14/046 ,  H04Q11/04

Abstract: In a private telecommunications network, a plurality of digital PBXs are interconnected via pairs of codecs. The codecs of each pair, or "tandem", are each operative to encode 64 kilobit/second (kbps) mu-law speech so as to compress it to 16 kbps speech for transmission to the other codec in the tandem. The latter is operative to thereafter decompress the 16 kbps speech back to 64 kbps. Each codec has a second mode of operation in which, rather than decode the encoded speech, it preserves the bits thereof in its own output signal. The codec transitions to this mode whenever it recognizes the presence of another codec on its high-bit-rate side of the connection. As a result, only one encoding/decoding cycle is performed across the connection, thereby minimizing the speech-coding-induced distortion and delay therein. The mechanism enabling a codec to communicate its presence to another codec on its high-bit-rate side of the connection is based on the transmission of predetermined synchronization patterns inserted in the signals it outputs in that direction. In a second embodiment, codecs of the above-described type are used in a cellular mobile radio telecommunications system.

公开(公告)号：US4334313A

公开(公告)日：1982-06-08

申请号：US185016

申请日：1980-09-08

Applicant: Richard D. Gitlin ,  Howard C. Meadors, Jr.

Inventor： Richard D. Gitlin ,  Howard C. Meadors, Jr.

IPC: H04L7/02 ,  H04B3/04

CPC classification number: H04L7/0058

Abstract: In a first data receiver (10), sampling circuitry (20, 25, 35) forms samples of a received data signal representing a succession of data symbols. The samples are formed at twice the symbol rate. Transversal filter circuitry (251, 261) operates on the samples by multiplying them by respective ones of a queue of coefficients. Further circuitry (55, 60, 65, 70, 252, 262), operative in response to the resulting products, forms decisions as to the values of the transmitted symbols and updates the values of the coefficients. Timing recovery circuitry (40) periodically identifies the largest of the coefficients in magnitude and either advances or retards the operation of the sampling circuitry by a fixed step size depending on whether that coefficient is or is not within a predetermined portion of the queue. Timing recovery circuitry (830) within a second data receiver (100) operates in a similar manner, but employs a step size whose magnitude is determined by the position of the largest coefficient relative to the center of the coefficient queue.

Abstract translation: 在第一数据接收器（10）中，采样电路（20,25,35）形成表示一系列数据符号的接收数据信号的采样。 样品以符号率的两倍形成。 横向滤波器电路（251,261）通过将它们乘以系数队列中的相应的一个来对样本进行操作。 响应于所得到的产品可操作的进一步的电路（55,60,65,70,252,262）形成关于发送符号的值的决定并更新系数的值。 定时恢复电路（40）周期性地识别幅度中最大的系数，并且取决于系数是否在队列的预定部分内或者不在队列的预定部分内，使采样电路的操作前进或延迟固定的步长。 第二数据接收器（100）内的定时恢复电路（830）以类似的方式操作，但采用其幅度由相对于系数队列的中心的最大系数的位置确定的步长。

公开(公告)号：US4253184A

公开(公告)日：1981-02-24

申请号：US91832

申请日：1979-11-06

Applicant: Richard D. Gitlin ,  Stephen B. Weinstein

Inventor： Richard D. Gitlin ,  Stephen B. Weinstein

IPC: H04L27/22 ,  H04B3/06 ,  H04L27/01 ,  H04L27/38 ,  H03K5/159 ,  H04B3/14

CPC classification number: H04L27/01

Abstract: A quadrature amplitude-modulated (QAM) data signal receiver employs a phase compensation arrangement (16, 31, 33) before the equalizer (17). The arrangement utilizes the assumption that the frequency components typically present in the phase perturbance are power-line related. This enables an effective phase compensator to be of relatively low complexity compared to the equalizer (17). Since the compensator is "pretuned", only the phase and amplitude of the frequency components need be adaptively found. This makes for a relatively stable arrangement with a suitable convergence rate. In an alternative arrangement, a phase compensator (216, 233, 240) is provided for use after the equalizer (217).

Abstract translation: 正交幅度调制（QAM）数据信号接收机在均衡器（17）之前采用相位补偿装置（16,33,33）。 该布置利用了通常存在于相位扰动中的频率分量与电力线相关的假设。 与均衡器（17）相比，这使得有效的相位补偿器具有相对低的复杂度。 由于补偿器是“预调”，所以只能自适应地发现频率分量的相位和幅度。 这使得具有适当收敛速度的相对稳定的布置。 在替代布置中，提供相位补偿器（216,233,240）以在均衡器（217）之后使用。

公开(公告)号：US10587999B2

公开(公告)日：2020-03-10

申请号：US16222497

申请日：2018-12-17

Applicant: Richard D. Gitlin ,  Mohamed H. Elkourdi ,  Asim M. Mazin

Inventor： Richard D. Gitlin ,  Mohamed H. Elkourdi ,  Asim M. Mazin

IPC: H04W4/70 ,  H04L12/66 ,  H04B7/0413 ,  H04L29/08 ,  H04J99/00 ,  H04W52/02 ,  H04W74/08 ,  H04W52/00

Abstract: Slotted Aloha-NOMA (SAN) protocol is an uncoordinated, non-orthogonal, random access protocol that exploits the simplicity of SA (Slotted Aloha) and the superior throughput of non-orthogonal multiple access (NOMA) and its ability to resolve collisions via use of successive interference cancellation (SIC) receiver. In SAN protocol, the SIC receiver at the IoT gateway adaptively learns the number of active devices (which is not known a priori) using multiple hypothesis testing in order to successfully distinguish between signals transmitted from different IoT devices.

公开(公告)号：US09402530B1

公开(公告)日：2016-08-02

申请号：US14919974

申请日：2015-10-22

Applicant: Richard D. Gitlin ,  Gabriel E. Arrobo ,  Thomas P. Ketterl

Inventor： Richard D. Gitlin ,  Gabriel E. Arrobo ,  Thomas P. Ketterl

IPC: H04B7/00 ,  A61B1/00 ,  H04W8/22 ,  A61B17/00 ,  H04W84/12

CPC classification number: A61B1/00016 ,  A61B1/00006 ,  A61B5/0022 ,  A61B5/0024 ,  A61B5/07 ,  A61B17/00234 ,  A61B17/32 ,  A61B2017/00212 ,  H04L67/125 ,  H04W8/22 ,  H04W40/00 ,  H04W76/10 ,  H04W84/12

Abstract: A system for performing non-invasive networked medical procedures including a number of in vivo medical devices, a communication path between at least two of the devices, an ex vivo control unit to control the behavior of the devices, and a wireless communication path between the control unit and at least one of the devices. An associated method for performing non-invasive networked medical procedures is also provided. Further included is a simulation method that utilizes accurate electromagnetic field simulations, using a software based test bench, to determine the maximum allowable transmitted power levels from in vivo devices to achieve a required bit error rates (BER) at an in vivo or ex vivo node (receiver) while maintaining the specific absorption rate (SAR) under a required threshold.

Abstract translation: 一种用于执行非侵入式联网医疗程序的系统，包括多个体内医疗设备，至少两个设备之间的通信路径，用于控制设备的行为的离体控制单元以及控制设备的行为之间的无线通信路径 控制单元和至少一个设备。 还提供了用于执行非侵入式联网医疗程序的相关方法。 还包括一种仿真方法，利用精确的电磁场模拟，使用基于软件的测试台来确定体内器件的最大允许发射功率电平，以在体内或离体节点处实现所需的误码率（BER） （接收器），同时将比吸收率（SAR）保持在所需阈值以下。

公开(公告)号：US20080247406A1

公开(公告)日：2008-10-09

申请号：US12079413

申请日：2008-03-25

Applicant: Norival R. Figueira ,  Richard D. Gitlin

Inventor： Norival R. Figueira ,  Richard D. Gitlin

IPC: H04L12/66

CPC classification number: H04L12/4662 ,  H04L12/4604 ,  H04L45/50

Abstract: A Layer 2 Virtual Private Network (L2VPN) system is provided. A Provider Backbone Bridge (PBB) network is provided which comprises a plurality of sites to be connected via a L2VPN. The plurality of sites in the PBB network is connected using a plurality of provider backbone trunks that includes a Provider Backbone Transport (PBT) trunk or a Provider Backbone Bridge Traffic Engineering (PBB-TE) trunk, such that the L2VPN includes the plurality of sites.

Abstract translation: 提供二层虚拟专用网（L2VPN）系统。 提供了一种提供商骨干桥（PBB）网络，其包括要通过L2VPN连接的多个站点。 PBB网络中的多个站点使用包括提供商骨干传输（PBT）中继线或提供商骨干网桥流量工程（PBB-TE）中继线）的多个提供商骨干干线连接，使得L2VPN包括多个站点 。