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1.发明授权Real-time slow drift correction of alignment of handset's local oscillator for cordless telephone 失效用于无绳电话的手机本地振荡器对准的实时慢漂移校正公开(公告)号：US06650874B1
公开(公告)日：2003-11-18
申请号：US09447286
申请日：1999-11-23
申请人： Somnath Banik , Joseph M. Cannon , Eric J. Diethorn , Jeffrey P. Grundvig , James A. Johanson , Richard L. McDowell , Philip D. Mooney , Jian Wu
发明人： Somnath Banik , Joseph M. Cannon , Eric J. Diethorn , Jeffrey P. Grundvig , James A. Johanson , Richard L. McDowell , Philip D. Mooney , Jian Wu
IPC分类号： H04B100
CPC分类号： H04M1/727 , H04L7/0083 , H04L7/0331 , H04M1/72505
摘要： A method and apparatus to perform a real-time drift correction of a remote handset's local oscillator in a digital cordless telephone. The remote handset begins in a standby (sniff) mode. The remote handset periodically wakes from a sleep mode and goes into a normal link verification mode. Once in the link verification mode, the remote handset enters a time division duplexing (TDD) mode and attempts to establish a link with a base unit based on the timing of the TDD data frame. After the remote handset establishes a link with the base unit, the remote handset requests a security word from the base unit. Upon receiving the requested security word, the remote handset determines if the requested security word matches a security word of the remote handset. The remote handset implements a software frequency adjustment of its local oscillator. Once per frame, the remote handset enters a timing recovery state where the current state of the frame is compared with a previous state. When the cumulative timing slip is greater than a designated threshold, a frequency adjustment is made. During this exchange of commands between the remote handset and base unit, the remote handset continuously adjusts its local oscillator to achieve frequency alignment within, e.g., 1 part per million (ppm). Alternatively, frequency alignment may be achieved to a specified value.
摘要翻译： 一种用于在数字无绳电话中执行远程手机的本地振荡器的实时漂移校正的方法和装置。 远程手机开始处于待机（嗅探）模式。 远程手机周期性地从休眠模式唤醒并进入正常的链路验证模式。 一旦处于链路验证模式，远程手机进入时分双工（TDD）模式，并尝试基于TDD数据帧的定时建立与基本单元的链路。 在远程手机与基本单元建立链接之后，远程手机从基本单元请求安全字。 在接收到所请求的安全字时，远程手机确定所请求的安全字是否与远程手机的安全字匹配。 远程手机实现其本地振荡器的软件频率调整。 每帧一次，远程手机进入定时恢复状态，其中帧的当前状态与先前状态进行比较。 当累积定时滑差大于指定的阈值时，进行频率调整。 在远程手机和基站单元之间的这种命令交换期间，远程手持机连续地调整其本地振荡器以实现例如百万分之一（ppm）内的频率对准。 或者，可以将频率对准实现为指定值。
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公开(公告)号：US06587694B1
公开(公告)日：2003-07-01
申请号：US09404807
申请日：1999-09-24
IPC分类号： H04L2730
CPC分类号： H04M1/72502
摘要： Clocks between at least two wireless devices are synchronized to reduce the need to transmit synchronization signals over a wireless communication channel therebetween. Two wireless devices synchronize their respective clocks with each other when each are electrically coupled, e.g., during a cradle time when brought into physical contact with each other through charge contacts, e.g., to recharge a remote portable unit. The charge signal appearing at the charge contacts is driven to create a time duration marked by a start transition and an end transition in the charge signal. The number of clock pulses of each of the two wireless devices during the time duration is counted, and compared to determine the difference in clock speeds of the wireless devices. The frequency of the clock of at least one of the wireless devices is adjusted to bring the difference in the clock speeds within a predetermined threshold tolerance level.
摘要翻译： 在至少两个无线设备之间的时钟被同步以减少通过它们之间的无线通信信道发送同步信号的需要。 两个无线设备在每个电耦合时使其各自的时钟彼此同步，例如在通过充电触点进行物理接触的支架时间期间，例如为远程便携式单元充电。 驱动出现在充电触点处的充电信号以产生由充电信号中的开始转换和结束转换所标记的持续时间。 对持续时间内的两个无线设备中的每一个的时钟脉冲数进行计数，并进行比较以确定无线设备的时钟速度的差异。 调整至少一个无线设备的时钟的频率以使时钟速度的差异在预定的阈值容差水平内。
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3.发明授权Methods and devices for controlling the connection of power supplies to circuitry within rechargeable devices 有权用于控制电源连接到可充电装置内的电路的方法和装置公开(公告)号：US06963763B1
公开(公告)日：2005-11-08
申请号：US09478883
申请日：2000-01-07
CPC分类号： H04W52/0277 , H02J9/005 , H04B1/3883 , H04M1/725 , Y02D70/40
摘要： The present invention provides a device for connecting a power supply to a rechargeable device, in which a detection unit is adapted to detect power levels of a battery to output a first signal when a low power level of the battery is detected, and a second signal when a sufficient power level of the battery is detected. A power control unit is adapted to receive the first and second signals, and to disconnect circuitry in the rechargeable device from the battery when the first signal is asserted, and to connect the circuitry in the rechargeable device to the battery when the second signal is asserted.
摘要翻译： 本发明提供了一种用于将电源连接到可再充电装置的装置，其中检测单元适于在检测到电池的低功率电平时检测电池的功率电平以输出第一信号，以及第二信号 当检测到电池的足够功率电平时。 电源控制单元适于接收第一和第二信号，并且当第一信号被断言时，断开可再充电装置中的电路与电池的连接，并且当第二信号被断言时，将可再充电装置中的电路连接到电池 。
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公开(公告)号：US06721372B1
公开(公告)日：2004-04-13
申请号：US09527289
申请日：2000-03-17
IPC分类号： H04L2706
CPC分类号： H04M1/73 , H03J1/0058 , H03J7/02 , H04L7/0331 , H04M1/72502
摘要： A method and apparatus to perform a real-time drift correction of a local oscillator in a wireless device such as a cordless telephone, and/or to perform software-based frequency tracking of the local oscillator. With respect to the real-time drift correction, the remote handset periodically wakes from a sleep mode and goes into a normal link verification mode. Once in the link verification mode, the remote handset enters a time division duplexing (TDD) mode and attempts to establish a link with a base unit based on the timing of the TDD data frame. After the remote handset establishes a link with the base unit, the remote handset requests a security word from the base unit. Upon receiving the requested security word, the remote handset determines if the requested security word matches a security word of the remote handset. The remote handset implements a software frequency adjustment of its local oscillator. Once per frame, the remote handset enters a timing recovery state where the current state of the frame is compared with a previous state. When the cumulative timing slip is greater than a designated threshold, a frequency adjustment is made. The remote handset continuously adjusts its local oscillator to achieve frequency alignment within, e.g., 1 part per million (ppm). Alternatively, frequency alignment may be achieved to a specified value. Frequency feedback control may be software based to allow frequency tracking between two remote points in a communication system. In this way, the desirability of any frequency correction at particular times may be based on the accuracy of the recovered timing and data, the sensitivity of the mode of the receiving device, etc. For instance, the frequency can be finely adjusted during system acquisition, can be coarsely adjusted during data transfer, and/or can be programmed to essentially ignore or disregard a frequency offset which would otherwise be determined based on erroneously received data and/or timing (e.g., based on frame error information).
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5.发明授权Channel selection and clarity improvement for digital cordless telephones operating in an overlapped range 有权在重叠范围内工作的数字无绳电话的频道选择和清晰度提升公开(公告)号：US06498935B1
公开(公告)日：2002-12-24
申请号：US09293850
申请日：1999-04-19
IPC分类号： H04Q720
CPC分类号： H04W16/16
摘要： When a plurality of cordless telephones (e.g., digital cordless telephones) are used within range of one another, base units of one or more of the digital cordless telephones may receive transmissions from others of the digital cordless telephones. Conventionally, the base unit would simply ignore information relating to that received from an unintended remote handset, i.e., a remote handset having a security code which fails to match that of the receiving base unit. However, in accordance with the principles of the present invention, information regarding the unique security code received with respect to other remote handsets (i.e., those having security codes which do not match that of the receiving base unit), are logged and used in a way which provides a unique best available channel list to each of the digital cordless telephones so that similar digital cordless telephones operating in a similar environment do not attempt selection of channels in a similar way (causing channel inclarity and/or interference). In a first embodiment, the list of best available channels is randomized based on the unique security code of the relevant digital cordless telephone. In a second embodiment, the list of best available channels is randomized only when another digital cordless telephone becomes within transmission range of the relevant digital cordless telephone. In a third embodiment, a list of best available channels is uniquely indexed for each digital cordless telephone based on a ranking of the digital cordless telephones within transmission range of one another. For instance, the highest ranking digital telephone in an environment with three digital cordless telephones attempts use of, preferably in order, the 1st, 4th, 7th, 10th, etc. channels.
摘要翻译： 当在彼此的范围内使用多个无绳电话（例如，数字无绳电话）时，一个或多个数字无绳电话的基本单元可以接收来自数字无绳电话中的其他人的传输。 通常，基本单元将简单地忽略与从非预期的远程手机（即，具有不匹配接收基站单元的安全码的远程手机）接收到的信息有关的信息。 然而，根据本发明的原理，关于与其他远程手机（即，具有与接收基站单元不匹配的安全代码的那些）相关的唯一安全密码的信息被记录并使用在 为每个数字无绳电话提供独特的最佳可用频道列表，使得在类似环境中操作的类似数字无绳电话不以类似的方式尝试选择频道（导致频道内容和/或干扰）。 在第一实施例中，基于相关数字无绳电话的唯一安全码，将最佳可用频道的列表随机化。 在第二实施例中，只有当另一数字无绳电话变成相关数字无绳电话的传输范围内时，最佳可用频道的列表是随机化的。 在第三实施例中，基于数字无绳电话在彼此的传输范围内的等级，为每个数字无绳电话唯一索引最佳可用信道的列表。 例如，在具有三个数字无绳电话的环境中的最高等级的数字电话尝试优选地使用第一，第四，第七，第十等等频道。
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6.发明授权Portable cell phone and a proximity regulation system for use with a portable cell phone 有权便携式手机和便携式手机使用的接近调节系统公开(公告)号：US08140128B2
公开(公告)日：2012-03-20
申请号：US12367078
申请日：2009-02-06
CPC分类号： H04W52/288 , H04B1/3838 , H04W52/36
摘要： Proximity regulation systems for use with a portable cell phone and portable cell phones are disclosed. In one embodiment, a portable cell phone includes a proximity regulation system having a location sensing subsystem configured to determine a location of a portable cell phone proximate a user by determining a mode of operation of the portable cell phone. A power governing subsystem is coupled to the location sensing subsystem and configured to determine a proximity transmit power level of the portable cell phone based on the location.
摘要翻译： 公开了用于便携式手机和便携式手机的接近调节系统。 在一个实施例中，便携式蜂窝电话包括接近调节系统，其具有位置感测子系统，其被配置为通过确定便携式蜂窝电话的操作模式来确定靠近用户的便携式蜂窝电话的位置。 功率控制子系统耦合到所述位置感测子系统并且被配置为基于所述位置来确定所述便携式蜂窝电话的接近发射功率电平。
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7.发明授权公开(公告)号：US07039435B2
公开(公告)日：2006-05-02
申请号：US09967140
申请日：2001-09-28
IPC分类号： H04B7/00
CPC分类号： H04W52/288 , H04B1/3838 , H04W52/36
摘要： A proximity regulation system for use with a portable cell phone and a method of operating the same. In one embodiment, the proximity regulation system includes a location sensing subsystem that is configured to determine a location of the portable cell phone proximate a user. A power governing subsystem is coupled to the location sensing subsystem and configured to determine a proximity transmit power level of the portable cell phone based on the location.
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8.发明申请PORTABLE CELL PHONE AND A PROIMITY REGULATION SYSTEM FOR USE WITH A PORTABLE CELL PHONE 有权便携式电话和使用便携式电话的程序调节系统公开(公告)号：US20120149440A1
公开(公告)日：2012-06-14
申请号：US13398656
申请日：2012-02-16
CPC分类号： H04W52/288 , H04B1/3838 , H04W52/36
摘要： Proximity regulation systems for use with a portable cell phone and portable cell phones are disclosed. In one embodiment, the portable cell phone includes: (1) an operation mode input or circuit and (2) means for determining a transmit power level of the portable cell phone based on the operation mode input or circuit.
摘要翻译： 公开了用于便携式手机和便携式手机的接近调节系统。 在一个实施例中，便携式蜂窝电话包括：（1）操作模式输入或电路;以及（2）用于基于操作模式输入或电路确定便携式蜂窝电话的发射功率电平的装置。
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9.发明授权Proximity regulation system for use with a portable cell phone and a method of operation thereof 有权用于便携式手机的接近调节系统及其操作方法公开(公告)号：US07499722B2
公开(公告)日：2009-03-03
申请号：US11369363
申请日：2006-03-07
CPC分类号： H04W52/288 , H04B1/3838 , H04W52/36
摘要： Proximity regulation systems for use with a portable cell phone, a portable cell phone and a method of operating the same. In one embodiment, the proximity regulation system includes a location sensing subsystem configured to determine a location of a portable cell phone proximate a user by determining a mode of operation of the portable cell phone. A power governing subsystem is coupled to the location sensing subsystem and configured to determine a proximity transmit power level of the portable cell phone based on the location.
摘要翻译： 与便携式手机一起使用的接近调节系统，便携式手机及其操作方法。 在一个实施例中，接近调节系统包括位置感测子系统，其被配置为通过确定便携式蜂窝电话的操作模式来确定靠近用户的便携式蜂窝电话的位置。 功率控制子系统耦合到所述位置感测子系统并且被配置为基于所述位置来确定所述便携式蜂窝电话的接近发射功率电平。
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10.发明授权Portable cell phone and a proximity regulation system for use with a portable cell phone 有权便携式手机和便携式手机使用的接近调节系统公开(公告)号：US08532594B2
公开(公告)日：2013-09-10
申请号：US13398656
申请日：2012-02-16
CPC分类号： H04W52/288 , H04B1/3838 , H04W52/36
摘要： Proximity regulation systems for use with a portable cell phone and portable cell phones are disclosed. In one embodiment, the portable cell phone includes: (1) an operation mode input or circuit and (2) means for determining a transmit power level of the portable cell phone based on the operation mode input or circuit.
摘要翻译： 公开了用于便携式手机和便携式手机的接近调节系统。 在一个实施例中，便携式蜂窝电话包括：（1）操作模式输入或电路;以及（2）用于基于操作模式输入或电路确定便携式蜂窝电话的发射功率电平的装置。
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