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

US5452473A Reverse link, transmit power correction and limitation in a radiotelephone system 失效
标题翻译：无线电话系统中的反向链路，发射功率校正和限制
公开(公告)号：US5452473A
公开(公告)日：1995-09-19
申请号：US203151
申请日：1994-02-28
申请人： Ana L. Weiland , Richard K. Kornfeld , Richard J. Kerr , John E. Maloney , Nathaniel B. Wilson
发明人： Ana L. Weiland , Richard K. Kornfeld , Richard J. Kerr , John E. Maloney , Nathaniel B. Wilson
IPC分类号： H04B1/40 , H04B1/04 , H04B7/005 , H04B7/26 , H04W52/06 , H04W52/52 , H04B1/06
CPC分类号： H04W52/06 , H04W52/36 , H04W52/52
摘要： The process and apparatus of the present invention limits the output power of a radiotelephone, operating in a cellular system in the preferred embodiment. This ensures the transmitted sidebands and synthesizer phase noise remains within a certain specification. This is accomplished by power detection and a correction accumulator that together generate a gain control signal by limiting the gain adjustment to a maximum value, even when the cell site communicating with the radiotelephone is sending power turn-up commands to the radiotelephone. This process includes dynamically correcting the output level of the transmitter due to gain variations in the transmitter stages or gain control elements.
摘要翻译：本发明的方法和装置限制在优选实施例中在蜂窝系统中操作的无线电话机的输出功率。这确保传输的边带和合成器相位噪声保持在一定的规格内。这通过功率检测和校正累加器来实现，即使当与无线电话机通信的小区站点向无线电话机发送功率开启命令时，通过将增益调整限制为最大值来一起生成增益控制信号。该过程包括由于发射机级或增益控制元件中的增益变化而动态校正发射机的输出电平。

2. 发明授权

US06977648B1 System and method for providing back-lighting to a keypad 有权
标题翻译：用于向小键盘提供背光的系统和方法
公开(公告)号：US06977648B1
公开(公告)日：2005-12-20
申请号：US09182626
申请日：1998-10-29
申请人： David E. Wang , Mahmoud Azartash , Larry D. Bradley , Richard J. Kerr
发明人： David E. Wang , Mahmoud Azartash , Larry D. Bradley , Richard J. Kerr
IPC分类号： G09G5/00 , H04M1/02 , H04M1/22
CPC分类号： H04M1/22 , H04M1/0214 , H04M1/23
摘要： A system for providing a first signal to a flip circuit and receiving a second signal from the flip circuit over an electrical path adapted for use with a keypad having a keypad lighting circuit. The system includes a first circuit for providing the first signal to the flip circuit via a first electrical path, the first signal having alternating first and second states. A second circuit generates a second signal. A third circuit receives the second signal via the first electrical path. The second signal is received during the second state of the first signal. In a more specific embodiment, the first and second states are continuously alternating states. The first signal provides power to the flip circuit when the first signal is in the first state. The first circuit further includes a signal generator for adjusting a duty cycle of the first signal. The signal generator includes a voltage source, a switching circuit connected to the voltage source, and a control circuit connected to the switching circuit. The control circuit causes the switching circuit to output the first signal having first and second states at the duty cycle. The switching circuit includes a transistor having a control terminal connected to the control circuit. One terminal is connected to the voltage source and another terminal is connected to the electrical path. The second circuit includes a keypad. The flip circuit includes at least one light source to illuminate the keypad. The light source is powered by the first signal during the first state thereof. The second signal is generated by the keypad during the second state of the first signal. The keypad includes a plurality of resistive elements connected in a resistive ladder network. Each resistive element corresponds to a respective key of the keypad. A computer processes the second signal to ascertain which key is depressed.
摘要翻译：一种用于向倒装电路提供第一信号并通过适于与具有键盘照明电路的键盘一起使用的电气路径从翻盖电路接收第二信号的系统。该系统包括用于经由第一电路向第一信号提供第一信号的第一电路，第一信号具有交替的第一和第二状态。第二电路产生第二信号。第三电路经由第一电路接收第二信号。在第一信号的第二状态期间接收第二信号。在更具体的实施例中，第一和第二状态是连续交替状态。当第一信号处于第一状态时，第一信号向翻盖电路供电。第一电路还包括用于调整第一信号的占空比的信号发生器。信号发生器包括电压源，连接到电压源的开关电路和连接到开关电路的控制电路。控制电路使开关电路以占空比输出具有第一和第二状态的第一信号。开关电路包括具有连接到控制电路的控制端子的晶体管。一个端子连接到电压源，另一个端子连接到电气路径。第二电路包括键盘。翻盖电路包括至少一个照明键盘的光源。光源在其第一状态期间由第一信号供电。在第一信号的第二状态期间，第二信号由键盘产生。键盘包括连接在电阻梯形网络中的多个电阻元件。每个电阻元件对应于键盘的相应键。计算机处理第二信号以确定哪个键被按下。

3. 发明授权

US4905177A High resolution phase to sine amplitude conversion 失效
标题翻译：高分辨率相位正弦振幅转换
公开(公告)号：US4905177A
公开(公告)日：1990-02-27
申请号：US145789
申请日：1988-01-19
申请人： Lindsay A. Weaver, Jr. , Richard J. Kerr
发明人： Lindsay A. Weaver, Jr. , Richard J. Kerr
IPC分类号： G06F1/02 , G06F1/035 , G06F17/10 , H03B28/00 , H03M1/66 , H04L27/18
CPC分类号： G06F1/0356 , G06F2101/04 , G06F2101/08
摘要： A method and apparatus for converting phase data into amplitude data. Input phase data is divided into upper and lower phase increments using an input splitter which can also fold in quadrant data. One or more storage elements, such as sine and cosine ROMs, are connected to the input splitter and generate an amplitude, which forms one of a plurality of series terms, and first and second derivatives of the amplitude in response to the upper phase increment. The first derivative and lower phase increment are multiplied together in a digital multiplier to produce a second series term. A third series term comprising a product of the amplitude and lower phase increment squared, is generated by a term generator connected to the splitter and to the storage element. The term generator can comprise elements such as a ROM addressable by the lower phase increment and the amplitude. The first, second and third series terms are subsequently added together by one or more digital adders connected to the multiplier, term generator, storage element and in series with each other to form an output amplitude. An output controller is used for transferring the output amplitude to other apparatus and for incorporating quadrant unfolding elements.
摘要翻译：一种用于将相位数据转换成振幅数据的方法和装置。使用输入分配器将输入相位数据分为上，下相位增量，也可以在象限数据中折叠。一个或多个存储元件，例如正弦和余弦ROM，连接到输入分配器，并产生一个振幅，其形成多个串联项中的一个，以及响应于上相位增量的振幅的第一和第二导数。第一导数和下相位增量在数字乘法器中相乘以产生第二串联项。包括幅度和相位递减平方的乘积的第三系列项由连接到分路器和存储元件的术语发生器产生。术语发生器可以包括诸如可通过较低相位增量和幅度寻址的ROM的元件。第一，第二和第三系列术语随后通过连接到乘法器，术语发生器，存储元件并且彼此串联的一个或多个数字加法器相加在一起以形成输出幅度。输出控制器用于将输出振幅转移到其他装置并用于结合象限展开元件。

4. 发明授权

US06847819B1 Adaptive transport TCP/IP phone management 有权
标题翻译：自适应传输TCP / IP电话管理
公开(公告)号：US06847819B1
公开(公告)日：2005-01-25
申请号：US09494786
申请日：2000-01-31
申请人： Stephen A. Sprigg , Marc S. Phillips , Richard J. Kerr , Daniel D. Claxton
发明人： Stephen A. Sprigg , Marc S. Phillips , Richard J. Kerr , Daniel D. Claxton
IPC分类号： H04L12/56 , H04Q7/38
CPC分类号： H04W40/02 , H04W80/00
摘要： A wireless communication device, comprising one or more intra-device modules, an internet protocol (IP) router for providing inter-device connectivity between a host and the intra-device modules, and one or more transport mechanisms, for coupling the IP router to the host. One or more intra-device modules are accessed via a standard internetwork protocol as if the intra-device modules were local servers.
摘要翻译：一种包括一个或多个设备内模块的无线通信设备，用于提供主机与设备间模块之间的设备间连接的互联网协议（IP）路由器，以及一个或多个传输机制，用于将IP路由器耦合到主人。一个或多个设备内模块通过标准互联网络协议进行访问，就像设备内模块是本地服务器一样。

5. 发明授权

US5509015A Method and apparatus for scheduling communication between transceivers 失效
标题翻译：用于调度收发器之间通信的方法和装置
公开(公告)号：US5509015A
公开(公告)日：1996-04-16
申请号：US206701
申请日：1994-03-07
申请人： Edward G. Tiedemann, Jr. , Lindsay A. Weaver, Jr. , Richard J. Kerr , Kenneth M. Geib
发明人： Edward G. Tiedemann, Jr. , Lindsay A. Weaver, Jr. , Richard J. Kerr , Kenneth M. Geib
IPC分类号： H04J3/16 , H04B1/16 , H04B7/26 , H04W24/00 , H04W48/08 , H04W52/02 , H04W56/00 , H04W72/04 , H04W72/12 , H04W74/04
CPC分类号： H04B1/1615 , H04W52/0216 , H04W52/0219 , H04B2201/70709 , H04W24/00 , H04W56/00 , H04W68/02 , H04W72/04 , H04W72/0413 , H04W72/12 , H04W74/04 , Y02B60/50
摘要： A system for reducing receiver power consumption in communication system having a transmitter and one or more receivers schedules periodic messages in "slots." Each receiver is assigned a slot during which it monitors the transmissions. The transmitter transmits messages to the receiver only during the assigned slots. The receiver is in an "active state" during its assigned slot. It may remain in the active state after its assigned slot if the message requires the receiver to perform additional actions. During the "inactive state," which is the time period between successive occurrences of its assigned slot, the receiver may perform any action not requiring coordination with the transmitter. It may conserve power during this time by removing power from one or more components such as those used for monitoring the transmissions. At a time during the inactive state shortly before the assigned slot, the receiver applies power to these components and performs initializations. Such initializations may include reacquiring a pilot channel signal to which the receiver may synchronize itself if its timing signals have drifted out of synchronization with those of the transmitter during the preceding inactive state.
摘要翻译：具有发射机和一个或多个接收机的通信系统中的接收机功率消耗的系统在“时隙”中调度周期性消息。每个接收机被分配一个时隙，在该时隙中它监视传输。发射机仅在分配的时隙期间向接收机发送消息。接收机在其分配的时隙中处于“活动状态”。如果消息要求接收方执行其他操作，则可能在其分配的时隙之后保持活动状态。在“不活动状态”期间，其是其分配时隙的连续出现之间的时间段，接收机可以执行不需要与发射机协调的任何动作。它可以在此期间通过从一个或多个组件（例如用于监视传输的组件）中的电力来节省电力。在分配时隙之前的非活动状态期间，接收机对这些组件施加功率并执行初始化。这样的初始化可以包括重新获取导频信道信号，如果接收机的定时信号在前一个非活动状态期间已经与发射机的定时信号漂移不同步，则其可以同步其自身。

6. 发明授权

US5392287A Apparatus and method for reducing power consumption in a mobile communications receiver 失效
标题翻译：用于降低移动通信接收机中的功耗的设备和方法
公开(公告)号：US5392287A
公开(公告)日：1995-02-21
申请号：US847149
申请日：1992-03-05
申请人： Edward G. Tiedemann, Jr. , Lindsay A. Weaver, Jr. , Richard J. Kerr , Kenneth M. Geib
发明人： Edward G. Tiedemann, Jr. , Lindsay A. Weaver, Jr. , Richard J. Kerr , Kenneth M. Geib
IPC分类号： H04J3/16 , H04B1/16 , H04B7/26 , H04W24/00 , H04W48/08 , H04W52/02 , H04W56/00 , H04W72/04 , H04W72/12 , H04W74/04 , H04J3/04
CPC分类号： H04B1/1615 , H04W52/0216 , H04W52/0219 , H04B2201/70709 , H04W24/00 , H04W56/00 , H04W68/02 , H04W72/04 , H04W72/0413 , H04W72/12 , H04W74/04 , Y02B60/50
摘要： A system for reducing receiver power consumption in communication system having a transmitter and one or more receivers schedules periodic messages in "slots." Each receiver is assigned a slot during which it monitors the transmissions. The transmitter transmits messages to the receiver only during the assigned slots. The receiver is in an "active state" during its assigned slot. It may remain in the active state after its assigned slot if the message requires the receiver to perform additional actions. During the "inactive state," which is the time period between successive occurrences of its assigned slot, the receiver may perform any action not requiring coordination with the transmitter. It may conserve power during this time by removing power from one or more components such as those used for monitoring the transmissions. At a time during the inactive state shortly before the assigned slot, the receiver applies power to these components and performs initializations. Such initializations may include requiring a pilot channel signal to which the receiver may synchronize itself if its timing signals have drifted out of synchronization with those of the transmitter during the preceding inactive state.
摘要翻译：具有发射机和一个或多个接收机的通信系统中的接收机功率消耗的系统在“时隙”中调度周期性消息。每个接收机被分配一个时隙，在该时隙中它监视传输。发射机仅在分配的时隙期间向接收机发送消息。接收机在其分配的时隙中处于“活动状态”。如果消息要求接收方执行其他操作，则可能在其分配的时隙之后保持活动状态。在“不活动状态”期间，其是其分配时隙的连续出现之间的时间段，接收机可以执行不需要与发射机协调的任何动作。它可以在此期间通过从一个或多个组件（例如用于监视传输的组件）中的电力来节省电力。在分配时隙之前的非活动状态期间，接收机对这些组件施加功率并执行初始化。这样的初始化可以包括要求导频信道信号，如果接收机的定时信号在先前的非活动状态期间已经偏移与发射机的定时信号不同步，则其可以同步其自身。

7. 发明授权

US4901265A Pseudorandom dither for frequency synthesis noise 失效
标题翻译：用于频率合成噪声的伪随机抖动
公开(公告)号：US4901265A
公开(公告)日：1990-02-13
申请号：US132348
申请日：1987-12-14
申请人： Richard J. Kerr , Lindsay A. Weaver
发明人： Richard J. Kerr , Lindsay A. Weaver
IPC分类号： H03M1/04 , G06F1/03 , G06F3/05 , G06J1/00 , H03B28/00 , H03M1/08 , H03M1/10 , H03M1/66
CPC分类号： G06J1/00 , G06F1/0328 , G06F2101/04 , G06F2211/902
摘要： A method and apparatus for reducing spurious output noise in digital frequency synthesizers employing sine amplitude converters connected to Digital-to-Analog converters to generate analog waveforms from sine amplitude data. Random or pseudorandom numbers having a value equal to or less than plus or minus one-half of a minimum quantization step or value change for the sine amplitude data are generated and added to the sine amplitude data with the resulting sum being transferred to the Digital-to-Analog converter. In one embodiment, a summation circuit is connected between an output of the sine function converter and an input of the Digital-to-Analog converter and also has a second input connected to a pseudorandom number generator which provides Pseudorandom numbers varying in value over a range of .+-.1/2.sup.n+1 times a least significant step value, or bit for base 2, of a corresponding Digital-to-Analog input data value where n is greater than or equal to 1.
摘要翻译：一种减少数字频率合成器中杂散输出噪声的方法和装置，其采用连接到数模转换器的正弦幅度转换器，以从正弦振幅数据产生模拟波形。生成具有等于或小于最小量化步长的正负两倍的正数振幅数据的随机或伪随机数，并将其相加到正弦幅度数据，并将所得到的和传送到数字 - 模拟转换器。在一个实施例中，求和电路连接在正弦函数转换器的输出端和数模转换器的输入端之间，并且还具有连接到伪随机数发生器的第二输入端，该伪随机数发生器提供在范围内变化的伪随机数对于n大于或等于1的对应的数模转换输入数据值的+/- 1 / 2n + 1倍的最低有效步长值或基数2的位。

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