公开(公告)号：US5717885A

公开(公告)日：1998-02-10

申请号：US741749

申请日：1996-11-05

申请人： Rajendra Kumar ,  Paul G. Emerson

发明人： Rajendra Kumar ,  Paul G. Emerson

IPC分类号： G06F12/10

CPC分类号： G06F12/1027 ,  G06F2212/652

摘要： A translation look-aside buffer (TLB) for translating a variable page size virtual page number to a physical page number. The TLB partitions the virtual page number into an upper portion and a lower portion. The upper portion is always compared to an upper virtual page number entry in a first content addressable memory while only certain bits of lower portion are selectively compared to a corresponding number of bits in a lower virtual page number entry in a second content addressable memory. The number of bits compared in the second content addressable memory is determined by the specified size of the physical page. The TLB includes a page size memory having a plurality of page size entries wherein the certain number of bits for each of the lower virtual page entries is specified by a corresponding page size entry. Associated with each bit in the lower virtual page number entries is an enable transistor for selectively enabling the comparison of that bit in the lower virtual page number entry. The enable gate includes a control input coupled to a corresponding bit in a corresponding page size entry, the enable transistor selectively enabling the single bit comparison when the corresponding bit in the page size entry is set to an enable state and selectively disabling the comparison when the corresponding bit in the page size entry is set to a disable state.

摘要翻译： 用于将可变页大小的虚拟页号翻译成物理页号的翻译后备缓冲器（TLB）。 TLB将虚拟页码分成上部和下部。 上部部分总是与第一内容可寻址存储器中的上虚拟页号码条目进行比较，而仅将下部分的某些比特选择性地与第二内容可寻址存储器中的较低虚拟页号码条目中的相应位数比较。 在第二内容可寻址存储器中比较的比特数由物理页面的指定大小确定。 TLB包括具有多个页面大小条目的页面大小存储器，其中每个较低虚拟页面条目的特定数量的位由相应的页面大小条目指定。 与较低虚拟页号码条目中的每个位相关联的是使能晶体管，用于选择性地启用较低虚拟页码条目中该位的比较。 使能栅极包括耦合到相应页面大小条目中的对应位的控制输入，当页面大小条目中的相应位被设置为使能状态时，使能晶体管有选择地启用单个位比较，并且当 页面大小条目中的相应位被设置为禁用状态。

公开(公告)号：US5708560A

公开(公告)日：1998-01-13

申请号：US506095

申请日：1995-07-24

申请人： Rajendra Kumar ,  Steven E. Brooks

发明人： Rajendra Kumar ,  Steven E. Brooks

IPC分类号： G06F1/16 ,  E05D11/10 ,  H05K7/16

CPC分类号： G06F1/1632 ,  G06F1/1626 ,  Y10S248/918 ,  Y10T16/5409 ,  Y10T16/5472 ,  Y10T16/5474 ,  Y10T16/5478

摘要： A device (10) adding keyboard input to a handheld computer (12) lacking such input (such as pen computers and personal digital assistants) includes a bracket (30) having a plurality of clips (33) removably carrying the handheld computer (12), and a joint (40) secured to the keyboard (11) and the bracket (30) for positioning the keyboard (11) in a plurality of orientations relative to the handheld computer (12). These orientations include a first orientation in which the keyboard (11) is operable and at a preselected viewing angle from a display (14) that is pan of the handheld computer (12), a second orientation adjacent the display (14) in which the keyboard (11) substantially covers the display (14), and a third orientation proximate the handheld computer (12) in which the display (14) is unobstructed, thereby facilitating pen-based input through the display (14). A locking slide (51) carried in a recess (52) is selectively extended by the user to pass through a plurality of slots (53, 54 and 55) in joint (40) to secure the keyboard (11) and handheld computer (12) in the first and operational orientation.

摘要翻译： 将缺少这样的输入（例如笔式计算机和个人数字助理）的键盘输入添加到键盘输入的装置（10）包括具有可移除地携带手持计算机（12）的多个夹子（33）的托架（30） ，以及固定到键盘（11）和支架（30）的接头（40），用于将键盘（11）相对于手持式计算机（12）定位成多个取向。 这些方向包括第一方向，其中键盘11可操作并且以与手持式计算机（12）的平底锅的显示器（14）成预定的视角相邻的显示器（14）的第二定向，其中， 键盘（11）基本上覆盖显示器（14），以及靠近手持式计算机（12）的第三方向，其中显示器（14）不被阻挡，从而便于通过显示器（14）进行基于笔的输入。 携带在凹部（52）中的锁定滑块（51）由使用者选择性地延伸以穿过接头（40）中的多个狭槽（53,54和55），以固定键盘（11）和手持式计算机（12） ）在第一和操作方向。

公开(公告)号：US5648760A

公开(公告)日：1997-07-15

申请号：US223464

申请日：1994-04-04

申请人： Rajendra Kumar

发明人： Rajendra Kumar

IPC分类号： G04G11/00 ,  G04G19/00 ,  H04B1/40 ,  H04M1/65 ,  H04M1/656 ,  H04Q1/00

CPC分类号： G04G11/00 ,  G04G19/00 ,  H04M1/6505 ,  H04M1/656 ,  H04M1/72502

摘要： A portable device (10) for selective message recordation and playback and scheduling includes a portable unit (11) and an optional homebase station (12). Portable unit (11) includes a housing (15), unit controller (20), tactile input mechanism (40), audio processor (60) and video processor (80). Portable unit (11) allows textual, audible and visual message inputs and their selective playback based on time or other preselected textual, audible or visual stimulus. A selectively detachable stylus (51) may be removed to engage a touch panel (50) for making operational selections and entering information. Optional homebase station (12) may include a variety of features for supporting and supplementing those of handheld unit (11), such as a floppy drive (112) message memory, input keys (114), a battery charging circuit (115) and an external communication circuit (117).

摘要翻译： 用于选择性消息记录和回放和调度的便携式设备（10）包括便携式单元（11）和可选的本地基站（12）。 便携式单元（11）包括壳体（15），单元控制器（20），触觉输入机构（40），音频处理器（60）和视频处理器（80）。 便携式单元（11）允许基于时间或其他预选的文本，声音或视觉刺激的文本，声音和视觉信息输入及其选择性播放。 可以移除可选择性地拆卸的触笔（51）以接合用于进行操作选择和输入信息的触摸面板（50）。 可选的本地基站（12）可以包括用于支持和补充手持单元（11）的各种特征，诸如软盘驱动器（112）消息存储器，输入键（114），电池充电电路（115）和 外部通信电路（117）。

公开(公告)号：US5479001A

公开(公告)日：1995-12-26

申请号：US278922

申请日：1994-07-22

申请人： Rajendra Kumar

发明人： Rajendra Kumar

IPC分类号： G06K7/10

CPC分类号： G06K7/10881 ,  G06K7/1098

摘要： A portable hand-held device (10) for data collection by an operator includes a grip unit (12) having polarized connectors (31, 32) at the top and bottom thereof for removable engagement with mating polarized connectors (33, 34) in external modulus (14) furnishing operator selectable, application functions such as CCD or laser scanning, and radio frequency automatic identification. Device (10) is held and operable by one hand in either right- or left-handed configurations with the output from modules (14) directed away from the operator and toward the object from which data is to be obtained. The connectors (31, 32) are mounted in reversed orientation from each other, thereby insuring that external removable modules (14) are automatically connected in the proper orientation for the desired handed operation.

摘要翻译： 用于操作者进行数据采集的便携式手持式装置（10）包括：握持单元（12），其具有位于其顶部和底部的偏振连接器（31,32），用于与外部的配合偏振连接器（33,34）可拆卸地接合 模数（14）提供操作员可选择的应用功能，如CCD或激光扫描，以及射频自动识别。 装置（10）以一只手以右手或左手的形式被保持和操作，其中模块（14）的输出指向远离操作者并朝向要获取数据的对象。 连接器（31,32）彼此相反的方向安装，从而确保外部可移除模块（14）以正确的方向自动连接以进行所需的手动操作。

公开(公告)号：USD350335S

公开(公告)日：1994-09-06

申请号：US690

申请日：1992-10-21

申请人： Rajendra Kumar ,  John W. Morrison, II

设计人： Rajendra Kumar ,  John W. Morrison, II

公开(公告)号：USD349604S

公开(公告)日：1994-08-16

申请号：US8164

申请日：1993-05-07

申请人： Rajendra Kumar ,  John W. Morrison, II

设计人： Rajendra Kumar ,  John W. Morrison, II

公开(公告)号：USD348896S

公开(公告)日：1994-07-19

申请号：US767269

申请日：1991-09-27

申请人： Rajendra Kumar ,  John W. Morrison, II

设计人： Rajendra Kumar ,  John W. Morrison, II

公开(公告)号：US20180026823A1

公开(公告)日：2018-01-25

申请号：US15217919

申请日：2016-07-22

申请人： Rajendra Kumar

发明人： Rajendra Kumar

IPC分类号： H04L27/26 ,  H04L5/26 ,  H04L1/00

CPC分类号： H04L27/2646 ,  H04B1/38 ,  H04J11/0046 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0057 ,  H04L5/0037 ,  H04L27/26 ,  H04L27/2602 ,  H04L27/2628 ,  H04L27/2634 ,  H04L27/265 ,  H04W84/042

摘要： Various embodiments of the invention are directed to methods and systems for high capacity OFDM transmitters and receivers. For example, various embodiments of the transmitter may utilize an architecture comprised of a multiplicity of baseband processing subsystems for receiving and modulating user input data from the respective groups of users, a subsystem for the generation of an OFDM signal comprised of a multiplicity of OFDM signals with spectrum sharing, and a baseband to RF conversion subsystem. Various embodiments of the receiver may utilize an architecture comprised of a multicarrier demodulator, a vector splitter, an inverse transform unit, and an interference mitigating symbol detection subsystem.

公开(公告)号：US09640866B2

公开(公告)日：2017-05-02

申请号：US13761455

申请日：2013-02-07

申请人： Rajendra Kumar

发明人： Rajendra Kumar

IPC分类号： H01Q3/26 ,  H04B7/08

CPC分类号： H01Q3/2617 ,  H04B7/0842 ,  H04B7/086 ,  H04B7/088

摘要： Various embodiments described herein are directed to methods and systems for multibeam adaptive antenna architectures for recovering user signals in the coverage area of the antenna in the presence of interference sources. For example, various embodiments may utilize an architecture comprised of an array of antenna feeds, an RF to baseband conversion subsystem, a bank of digital beamformers, a channelization subsystem, a bank of weighted combiners, and a bank of demodulators for the demodulation and detection of user signals. The multiple beamformers introduce nulls in the direction of interference sources based on distinct adaptive algorithms for providing different antenna beam patterns after adaptation. Various other embodiments may utilize architecture for providing the directions of the interference sources or intentional jammers.

公开(公告)号：USRE45181E1

公开(公告)日：2014-10-07

申请号：US13855227

申请日：2013-04-02

申请人： Rajendra Kumar

发明人： Rajendra Kumar

IPC分类号： H04B1/38 ,  H04M1/00

CPC分类号： G06F3/0202 ,  G06F1/1626 ,  G06F1/1632

摘要： An apparatus and method are disclosed that can adapt off-the shelf PDA devices (90) to user input/output applications such as data entry applications and cellular phone applications. The resulting apparatus (10) may be sized and shaped to be durable and facilitate handheld operation when the user is mobile during use. The apparatus provides features required for portable data entry such as key entry, barcode scanning, radio frequency identification, and wireless local area network (LAN) as well as wide area network (WAN) communications. The apparatus may be operated (a) in a slave mode with inclusion of a PDA device (90) for use in certain input/output operations that are processor intensive as well as (b) in a stand-alone mode without inclusion of a PDA device (90) for use in certain other input/output operations that are not processor intensive.

摘要翻译： 公开了一种可以将现成的PDA设备（90）适应于诸如数据录入应用和蜂窝电话应用之类的用户输入/输出应用的装置和方法。 所得到的装置（10）的尺寸和形状可以是耐用的，并且当用户在使用期间是移动的时便于手持操作。 该设备提供便携式数据输入所需的功能，例如键入，条形码扫描，射频识别和无线局域网（LAN）以及广域网（WAN）通信。 该装置可以以从属模式操作（a），包括用于在处理器密集的某些输入/输出操作中使用的PDA设备（90），以及（b）以独立模式而不包括PDA 设备（90），用于不是处理器密集型的某些其他输入/输出操作。