公开(公告)号：US5666170A

公开(公告)日：1997-09-09

申请号：US501334

申请日：1995-07-12

Applicant: John S. Stewart

Inventor： John S. Stewart

IPC: H04N5/455 ,  H03M13/27 ,  H04B7/155 ,  H04L1/00 ,  H04L27/00 ,  H04N5/44 ,  H04N5/46 ,  H04N19/00 ,  H04N21/2383 ,  H04N21/438 ,  H04N7/26

CPC classification number: H04L1/0065 ,  H04L1/0046 ,  H04L1/0054 ,  H04L1/0068 ,  H04L1/0071 ,  H04L27/0008 ,  H04N21/2383 ,  H04N21/4382 ,  H04N5/4401 ,  H04N5/455

Abstract: An adaptive receiver includes an adaptive decoder for providing decoded output data from a video signal encoded for satellite, terrestrial or cable transmission. The apparatus includes an adaptive decoder for providing a first decoded output as a function of a code rate selected from a plurality of code rates. The apparatus also includes an adaptive deinterleaver for deinterleaving the first decoded output in accordance with a deinterleaving function selected from a plurality of deinterleaving functions. In addition, the apparatus includes an output signal processor for processing the deinterleaved output data to provide the decoded output data. The demodulator may also incorporate a an adaptive error decoder for detecting and correcting errors in the deinterleaved output. In addition, a signal quality detector may provide an estimate of the error in the decoded output data. The apparatus is automatically configured to be compatible with the encoded video signal format in response to the error estimate.

Abstract translation: 自适应接收机包括自适应解码器，用于从编码用于卫星，地面或电缆传输的视频信号提供解码的输出数据。 该装置包括一个自适应解码器，用于根据从多个码率选择的码率提供第一解码输出。 该装置还包括一个自适应解交织器，用于根据从多个解交织函数中选择的解交织功能对第一解码输出进行解交织。 此外，该装置包括用于处理去交织的输出数据以提供解码的输出数据的输出信号处理器。 解调器还可以包括用于检测和校正去交错输出中的错误的自适应误差解码器。 此外，信号质量检测器可以提供解码的输出数据中的误差的估计。 该装置被自动配置为与编码的视频信号格式兼容以响应误差估计。

公开(公告)号：US5603365A

公开(公告)日：1997-02-18

申请号：US559024

申请日：1995-11-16

Applicant: John S. Stewart

Inventor： John S. Stewart

IPC: B27C1/02 ,  B23C5/10 ,  B23C5/22 ,  B23Q11/00 ,  B27G13/04 ,  B27C1/00 ,  B26D1/00

CPC classification number: B23C5/04 ,  B23C5/109 ,  B23C5/2221 ,  B23Q11/0032 ,  B27G13/04 ,  B23C2200/0416 ,  B23C2200/367 ,  Y10T407/1934 ,  Y10T407/1936

Abstract: A removable cutterhead insert for use in a helical cutterhead for an industrial woodworking machine, the helical cutterhead including a generally cylindrical portion, a plurality of circumferential, spaced grooves extending into the cutterhead body from the periphery of the cylindrical portion and adapted to receive the removable cutterhead inserts, and fasteners for removably securing the cutterhead inserts in the grooves; the cutterhead insert includes a mild steel insert body and two blade units; the insert body having raised portions having triangular pockets formed therein so as to have two inwardly-facing flat portions, a hole to receive the fasteners for removably securing the cutterhead insert in the grooves between the inwardly-facing flat portions and two bolt holes to secure the two blade units to the insert body; and the blade units are triangular with cut-off corners each including a blade edge and configured so as not to occlude the countersunk hole and to have the blades edges disposed to align with the blade edges of other blade units in other insert bodies to form a substantially helical blade when the blade units are secured to the insert body in a cutterhead.

Abstract translation: 一种用于工业木工机械的螺旋刀盘中的可拆卸的刀头刀片，所述螺旋刀具包括大致圆柱形的部分，多个周向间隔开的槽，从所述圆柱形部分的周边延伸到所述刀架主体中并且适于接收可移除 刀头插入件和用于可拆卸地将刀架插入件固定在凹槽中的紧固件; 刀头插入件包括软钢插入体和两个叶片单元; 插入体具有形成在其中的具有三角形凹穴的凸起部分，以具有两个向内的平坦部分，一个孔，用于容纳用于将切割刀片插入件可拆卸地固定在面向内的平坦部分之间的凹槽中的两个螺栓孔，以固定 两个刀片单元到刀片体; 并且刀片单元是三角形的，具有切割角，每个切角都包括刀刃，并且被构造成不堵塞埋头孔，并且使刀片边缘设置成与其他刀片体中的其它刀片单元的刀片边缘对准，以形成 当叶片单元在刀架中固定到插入体上时，基本上是螺旋状的叶片。

公开(公告)号：US4758919A

公开(公告)日：1988-07-19

申请号：US817069

申请日：1986-01-08

Applicant: John S. Stewart

Inventor： John S. Stewart

IPC: H01H33/62 ,  H01H3/30 ,  H02H3/06 ,  H02H7/26 ,  H02H3/05 ,  H02H3/08

CPC classification number: H02H7/26 ,  H02H3/06 ,  H01H3/3021 ,  H01H3/3026 ,  H01H3/3031

Abstract: Fault currents in the phases of a three-phase supply are detected by transformers 28 in respective phase links 14 and are counted by associated circuits 24 when any one of the circuits 24 reaches a predetermined count level, or when there is a fault condition, a low VA trip coil 42 is energized so as to release latches which hold the phase links 14 in their operative positions and thereby cause all three links 14 to drop out together.

Abstract translation: 在三相电源的相位中的故障电流由相应的相位链路14中的变压器28检测，并且当任何一个电路24达到预定的计数电平时由关联的电路24对其进行计数，或者当存在故障状况时 低VA跳闸线圈42通电以释放将相链节14保持在其操作位置的闩锁，从而使所有三个链节14一起掉出。

公开(公告)号：US4445017A

公开(公告)日：1984-04-24

申请号：US311922

申请日：1981-10-16

Applicant: John S. Stewart ,  George A. Hodkin

Inventor： John S. Stewart ,  George A. Hodkin

IPC: H01H33/18 ,  H02B13/075

CPC classification number: H02B13/075 ,  H01H33/187

Abstract: Electrical switchgear comprises a first contact set composed of a first contact which is pivotable about a pivot axis and a second contact, the contacts being relatively movable between a closed position wherein a load current can be passed therethrough and an open position. An arc is formed between the first contact and an arcing electrode during movement of the contacts from their closed to their open position, whereupon current flows through a field coil connected in series with the electrode to produce a magnetic field which causes the arc to rotate and become extinguished. The pivot axis of the first contact extends transversely to a major axis of the field coil such that, during opening of the contacts, an end portion of the first contact moves transversely to and inwardly of said major axis. A second contact set is operable to earth the first contact set when its contacts are in their open position. Both the first and second contact sets are disposed in a common housing which contains an electrically insulating fluid.

Abstract translation: 电气开关装置包括由第一接触件构成的第一触头组件，该第一触头可围绕枢转轴线和第二触点枢转，所述触头可在负载电流可以通过其中的闭合位置和打开位置之间相对移动。 在触头从其闭合位置移动到其打开位置期间，在第一触点和电弧电极之间形成电弧，由此电流流过与电极串联的励磁线圈，以产生导致电弧旋转的磁场， 熄灭了 第一触头的枢转轴线横向于励磁线圈的长轴线延伸，使得在触头打开期间，第一触头的端部横向于所述主轴线向内移动。 第二触点组可操作以在其触点处于其打开位置时接地第一触点组。 第一和第二接触组都布置在包含电绝缘流体的公共壳体中。

公开(公告)号：US5610983A

公开(公告)日：1997-03-11

申请号：US315516

申请日：1994-09-30

Applicant: John S. Stewart

Inventor： John S. Stewart

IPC: H04N5/04 ,  H04B7/212 ,  H04J3/06 ,  H04L7/00 ,  H04L7/02 ,  H04L7/08 ,  H04N7/20 ,  H04L9/00 ,  H03M13/00 ,  H04N7/12

CPC classification number: H04B7/2125 ,  H04J3/0608

Abstract: A satellite transmission system receiver, for receiving a composite signal including a data component and a synchronization (sync) component is disclosed. The receiver includes a signal processor, responsive to the received data component, and requiring a periodic sync signal in synchronism, with the sync component. A sync signal generator periodically produces the sync signal. A sync component detector, responsive to the sync component, synchronizes the sync signal generator to the received sync component. The satellite transmission system receiver further includes a sync word predictor, responsive to the received data signal, for predicting the locations of sync words in the received data signal and a sync word inserter, coupled to the sync word predictor, for substituting a word having the value of the sync word into the received data signal at a predicted location.

Abstract translation: 公开了一种用于接收包括数据分量和同步（sync）分量的复合信号的卫星传输系统接收机。 接收机包括响应于所接收的数据分量并且同步要求与同步分量同步的周期性同步信号的信号处理器。 同步信号发生器周期性地产生同步信号。 响应于同步分量的同步分量检测器将同步信号发生器同步到所接收的同步分量。 卫星传输系统接收机还包括一个同步字预测器，响应于所接收的数据信号，用于预测接收到的数据信号中的同步字的位置和耦合到同步字预测器的同步字插入器，用于替换具有 同步字的值在预测位置处接收到的数据信号。

公开(公告)号：US5563915A

公开(公告)日：1996-10-08

申请号：US346950

申请日：1994-11-30

Applicant: John S. Stewart

Inventor： John S. Stewart

IPC: H04N5/46 ,  H04N5/00 ,  H04N5/44 ,  H04N7/015 ,  H04N7/24 ,  H04N7/26 ,  H03D1/00

CPC classification number: H03M13/2789 ,  H03M13/276 ,  H03M13/6508 ,  H04N19/85 ,  H04N21/2383 ,  H04N21/4382 ,  H04N21/4383 ,  H04N5/4401

Abstract: A television signal receiving system includes a deinterleaving network (18) containing first and second deinterleaving functions associated with respective memory address controllers (20, 25). One or the other of the deinterleaving functions is selected for use by a multiplexer (30) in response to a Deinterleaver Select control signal. Deinterleaving is accomplished by controlling the read/write addressing of a memory (35) by the selected deinterleaving function.

Abstract translation: 电视信号接收系统包括解交织网络（18），其包含与相应存储器地址控制器（20,25）相关联的第一和第二解交织功能。 响应于去交织器选择控制信号，选择多路复用器（30）中的一个或另一个解交织功能。 通过所选择的解交织功能控制存储器（35）的读/写寻址来实现去交织。

公开(公告)号：US5497401A

公开(公告)日：1996-03-05

申请号：US342280

申请日：1994-11-18

Applicant: Kumar Ramaswamy ,  John S. Stewart

Inventor： Kumar Ramaswamy ,  John S. Stewart

IPC: H03M13/23 ,  H03M13/41 ,  H04L27/00 ,  H04L27/38 ,  H04N5/44 ,  H04N5/455 ,  H04N5/46 ,  H04N21/2383 ,  H04N21/438 ,  H03M13/12

CPC classification number: H03M13/23 ,  H03M13/3961 ,  H03M13/41 ,  H03M13/6362 ,  H03M13/6502 ,  H03M13/6505 ,  H04L27/0008 ,  H04N5/4401

Abstract: A branch metric computer for the Viterbi decoder of a convolutional decoder primarily intended for use in a multi-channel compressed-digital television receiver capable of receiving FEC data transmitted over satellite, terrestrial and transmission channels. The branch metric computer employs a RAM, having an effective depth of 2.sup.x storage locations and an effective storage-location width of 16 m, which is preloaded with two selectively programmed I and two selectively programmed Q lookup tables, wherein each table entry is made up of four m-bit values,. The RAM is designed to operate with either QPSK punctured-coded I and Q signal inputs or any one of a plurality of different PAM or QAM higher alphabet or an 8-PSK pragmatic trellis-coded 2.sup.x -bit I and 2.sup.x -bit Q signal inputs to the convolutional decoder that are forwarded as signal inputs to the RAM for controlling the particular I and Q lookup-table entries read out from the RAM. The branch metric computer further comprises (1) a group of eight Manhattan-distance metric computing summers organized into first and second sets of four summers for adding certain combinations of the four m-bit I and Q lookup-table entries read out from the RAM and (2) a network including four comparators with each of them forwarding to the Viterbi decoder the lesser sum output from corresponding ones of the summers of the first and second sets.

Abstract translation: 主要用于能够接收通过卫星，地面和传输信道发送的FEC数据的多声道压缩数字电视接收机的卷积解码器的维特比解码器的分支度量计算机。 分支度量计算机采用RAM，其具有2x存储位置的有效深度和16m的有效存储位置宽度，其预加载有两个选择性编程的I和两个选择性编程的Q查找表，其中每个表条目被组成 的四个m位值。 RAM被设计为使用QPSK穿孔编码的I和Q信号输入或多个不同的PAM或QAM较高字母表或8-PSK实际格式编码的2x位I和2x位Q信号输入中的任何一个来操作 到作为信号输入转发到RAM的卷积解码器，用于控制从RAM读出的特定I和Q查找表条目。 分支度量计算机还包括（1）组合成第一和第四组四个加法器的八个曼哈顿距离度量计算加法器，用于添加从RAM读出的四个m位I和Q查找表条目的某些组合 和（2）包括四个比较器的网络，其中每个比较器转发到维特比解码器，从第一和第二组的相应的相应的一个加法器输出较小的和。

公开(公告)号：US4393291A

公开(公告)日：1983-07-12

申请号：US180340

申请日：1980-08-22

Applicant: John S. Stewart ,  Stanislaw M. Gonek

Inventor： John S. Stewart ,  Stanislaw M. Gonek

IPC: H01H33/70 ,  H01H33/915

CPC classification number: H01H33/7023

Abstract: A gas-blast type interrupter comprises first and second electrodes relatively movable between a closed position in which they are in mutual electrical engagement and an open position in which they are mutually separated, movement of the electrodes towards their open position causing an arc to be drawn therebetween. A tubular housing encloses the first electrode and has therein a first insulating orifice through which the second electrode substantially sealingly passes when the electrodes are in their closed position. A guide surrounds the tubular member and has therein a second insulating orifice through which the second electrode also substantially sealingly passes when the electrodes are in their closed position, the first and second orifices being co-axial and of essentially the same size. The tubular housing and the guide define therebetween an annular chamber to which pressurized gas is supplied upon movement of the electrodes towards their open position, so that when the second electrode passes out of the first insulating orifice pressurized gas is permitted to flow therethrough into the interior of the tubular member in a direction essentially along said arc, and when the second electrode subsequently passes out of the second insulating orifice the pressurized gas is permitted to flow therethrough from the annular chamber in the opposite direction to the gas flowing through the first orifice.

Abstract translation: 气体喷射式中断器包括第一和第二电极，它们在它们处于相互电接合的关闭位置和它们相互分离的打开位置之间可相对移动，并且电极朝着它们的打开位置移动，从而导致弧被拉伸 之间。 管状壳体包围第一电极并且具有第一绝缘孔，当电极处于其闭合位置时，第二电极基本上密封地穿过该第一绝缘孔。 引导件围绕管状构件并且在其中具有第二绝缘孔，当电极处于其闭合位置时，第二电极还通过该第二绝缘孔基本上密封地通过，第一和第二孔同轴并且具有基本相同的尺寸。 管状壳体和引导件在其间限定环形室，当电极移向其打开位置时，加压气体被供应到该环形室，当第二电极从第一绝缘孔流出时，加压气体允许其流过内部 在第二电极随后从第二绝缘孔流出的同时，允许加压气体从环形室流过与流经第一孔的气体相反的方向流过。

公开(公告)号：US07708038B1

公开(公告)日：2010-05-04

申请号：US11604420

申请日：2006-11-27

Applicant: John S. Stewart

Inventor： John S. Stewart

IPC: B27C1/00

CPC classification number: B27G13/04 ,  B23C5/04 ,  B23C5/2213 ,  B27G13/005

Abstract: A cutterhead for a peripheral milling machine including a cutterhead body including a generally cylindrical portion and a plurality of circumferential, spaced and offset blade unit mounting cavities extending into the cutterhead body from the periphery of the cylindrical portion for receiving a blade unit. The cutterhead further includes a plurality of blade units each having at least one cutting edge and means for removably securing each of the removable blade units in the corresponding blade unit mounting cavity. The cutting edge of each of the blade units is disposed to align with the cutting edge of each of the other blade units in adjacent mounting cavities to form a substantially helical, stepped blade row when the blade units are secured to the cutterhead body.

Abstract translation: 一种用于外围铣床的刀架，其包括刀头本体，该刀架主体包括大致圆柱形的部分和多个周向间隔开的和偏移的刀片单元安装空腔，该安装空腔从圆柱形部分的周边延伸到刀架本体中，用于接收刀片单元。 刀架还包括多个刀片单元，每个刀片单元各自具有至少一个切削刃，以及用于将每个可移除刀片单元可移除地固定在相应的刀片单元安装腔中的装置。 每个叶片单元的切割边缘设置成在相邻的安装空腔中与每个其它叶片单元的切割边缘对齐，以在叶片单元固定到切割刀体时形成基本螺旋状的阶梯式叶片排。

公开(公告)号：US20090074228A1

公开(公告)日：2009-03-19

申请号：US12209482

申请日：2008-09-12

Applicant: Louis A. Mango, III ,  Ryszard A. Pilatowski ,  John F. Steere ,  John S. Stewart

Inventor： Louis A. Mango, III ,  Ryszard A. Pilatowski ,  John F. Steere ,  John S. Stewart

IPC: H04R9/02 ,  H04R31/00 ,  H04R9/00

CPC classification number: H04R31/003 ,  Y10T29/49005

Abstract: A loudspeaker cone body made of paper may include a chemically-bound nanomaterial, such as a carbon nanotube. The carbon nanotube may be chemically bound to a functionalizing agent having a chemical group chemically bound to one or more papermaking additives, such as a sizing agent or a wet strength agent, a dry strength agent, a resin or cellulose-containing papermaking stock material typically present in a paper loudspeaker cone body, such as pulp. Acoustic-related loudspeaker performance characteristics such as stiffness to weight ratio and an acoustic damping of the loudspeaker cone body may be altered by incorporation of the nanomaterials chemically bound to the loudspeaker cone body.

Abstract translation: 由纸制成的扬声器锥体可以包括化学结合的纳米材料，例如碳纳米管。 碳纳米管可以化学键合到具有与一种或多种造纸添加剂化学键合的官能化剂，例如上浆剂或湿强度剂，干强度剂，含树脂或纤维素的造纸原料通常 存在于纸扬声器锥体中，如纸浆。 声学相关的扬声器性能特征如刚度与重量比以及扬声器锥体的声阻尼可以通过结合化学地结合到扬声器锥体的纳米材料来改变。