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公开(公告)号：US6122502A
公开(公告)日：2000-09-19
申请号：US996582
申请日：1997-12-23
摘要： A cordless telephone base unit includes a registration unit adapted to selectively register with a handset according to at least one predefined criterion, a call handling unit adapted to handle an incoming call when the handset is registered with the registration unit, and a call forwarding unit adapted to forward an incoming call to a forwarding number when the handset is not registered with the registration unit.
摘要翻译： 无线电话基站单元包括：注册单元，适于根据至少一个预定准则选择性地向手机注册;呼叫处理单元，适于在手机向注册单元注册时处理来电;以及呼叫转移单元， 当手机未向注册单元注册时，将来电转接到转接号码。
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2.发明授权
公开(公告)号：US6061435A
公开(公告)日：2000-05-09
申请号：US943535
申请日：1997-10-03
CPC分类号： H04M1/575 , H04M1/72502
摘要： In a first embodiment according to the invention, a cordless telephone handset of a cordless telephone system includes a user input unit, a signal processor and an output driver. The signal processor is coupled to the user input unit. The signal processor processes user input received via the user input unit. The output driver receives processed information from the signal processor and selectively outputs the processed information to at least one of a plurality of output devices. For example, in one embodiment the user input unit is a keypad, and the signal processor selectively processes the user input as telephone control information and as television control information. In a second embodiment according to the invention, a method of receiving an incoming call in a cordless telephone includes the steps of receiving an incoming call telephone signal, and outputting a television control signal in response to the incoming call telephone signal.
摘要翻译： 在根据本发明的第一实施例中，无绳电话系统的无绳电话手机包括用户输入单元，信号处理器和输出驱动器。 信号处理器耦合到用户输入单元。 信号处理器处理经由用户输入单元接收的用户输入。 输出驱动器从信号处理器接收处理的信息，并且选择性地将经处理的信息输出到多个输出装置中的至少一个。 例如，在一个实施例中，用户输入单元是键盘，并且信号处理器选择性地处理用户输入作为电话控制信息和电视控制信息。 在根据本发明的第二实施例中，在无绳电话中接收呼入的方法包括以下步骤：接收来电电话信号，并响应于来电电话信号输出电视控制信号。
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公开(公告)号：US20120147493A1
公开(公告)日：2012-06-14
申请号：US12964431
申请日：2010-12-09
IPC分类号： G11B5/09
CPC分类号： G11B5/746 , G11B5/012 , G11B20/10222 , G11B2220/252
摘要： A method and disk drive for calibrating a phase of a clock in the disk drive. The phase of the clock in the disk drive is changed such that a rate of change for the phase is substantially constant. A pattern of data is written to a magnetic material in the disk drive after the rate of change for the phase becomes substantially constant and while changing the phase of the clock. A selected phase of the clock at which the pattern of data that is written on the magnetic material has a desired quality is identified using the rate of change for the phase, a first point in time at which a timing mark on the magnetic material is read, a second point in time at which the timing mark is read, and a third point in time at which the pattern of data has the desired quality.
摘要翻译： 一种用于校准磁盘驱动器中时钟相位的方法和磁盘驱动器。 磁盘驱动器中的时钟的相位被改变，使得相位的变化率基本上是恒定的。 在相位变化率变得基本恒定并且改变时钟的相位之后，将数据模式写入磁盘驱动器中的磁性材料。 写入磁性材料上的数据图形具有期望质量的选择的时钟相位使用相位变化率来识别，读取磁性材料上的定时标记的第一时间点 ，读取定时标记的第二时间点，以及数据模式具有期望质量的第三时间点。
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4.发明授权Received-signal-strength-based swap table for frequency hopping communication system 有权基于接收信号强度的跳频通信系统交换表公开(公告)号：US06751249B1
公开(公告)日：2004-06-15
申请号：US09405910
申请日：1999-09-24
申请人： Joseph M. Cannon , Paul Joseph Davis , Richard Lawrence McDowell , Jeffrey Paul Grundvig , Eric John Diethorn
发明人： Joseph M. Cannon , Paul Joseph Davis , Richard Lawrence McDowell , Jeffrey Paul Grundvig , Eric John Diethorn
IPC分类号： H04B169
CPC分类号： H04B1/715 , H04B2001/7154
摘要： A frequency hopping spread spectrum cordless telephone system which arranges a swap table. The method and apparatus scans the electromagnetic interference energy content of the frequencies listed in the swap table, for example, when the base unit and hand-held unit are not in use. A controller thereafter arranges the frequencies in the swap table according to their respective electromagnetic interference energy content. During normal operation, upon detection of a degraded active or hop frequency, the controller selects the swap frequency with the lowest electromagnetic interference energy content, which preferably is in the first position in the swap table, to replace the degraded hop frequency.
摘要翻译： 一种跳频扩频无线电话系统，安排一个互换表。 该方法和装置扫描交换表中列出的频率的电磁干扰能量含量，例如，当基本单元和手持单元不使用时。 然后，控制器根据其各自的电磁干扰能量内容将频率布置在交换表中。 在正常操作期间，控制器在检测到激活或跳频恶化时选择具有最低电磁干扰能量内容的交换频率，优选地在交换表中处于第一位置以替换降级跳频。
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公开(公告)号：US06867617B2
公开(公告)日：2005-03-15
申请号：US10623303
申请日：2003-07-18
IPC分类号： G06F9/38 , H03K19/00 , H03K19/173
CPC分类号： G06F9/3875 , G06F9/3869
摘要： A method and apparatus for converting a full-rate digital clock circuit to a fractional-rate clock circuit. The combinatorial and sequential functions of the full rate design are duplicated, with a first combinatorial function responsive to even input logic vectors and a second combinatorial function responsive to odd input logic vectors. Output vectors from the first and the second combinatorial function are provided as input vectors to the respective first and second sequential function, which operate at a fractional clock rate and provide the output block vectors.
摘要翻译： 一种用于将全速率数字时钟电路转换为分数速率时钟电路的方法和装置。 全速率设计的组合和顺序功能被复制，响应于偶数输入逻辑矢量的第一组合函数和响应奇数输入逻辑矢量的第二组合函数。 提供来自第一组合函数和第二组合函数的输出向量作为到第一和第二顺序函数的输入向量，其以小数时钟速率操作并提供输出块向量。
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6.发明授权
公开(公告)号：US5844435A
公开(公告)日：1998-12-01
申请号：US816014
申请日：1997-03-11
CPC分类号： G06F1/324 , G06F1/08 , G06F1/26 , Y02B60/1217
摘要： A clock circuit for providing an integrated circuit with a high accuracy, crystal oscillator clock which interfaces to an "off-chip" crystal to provide a high accuracy clock signal while an internal, low power oscillator provides a low power clock source. Either clock may be selected to drive a programmable processor under program control. When high accuracy and stability are required, the crystal oscillator may be chosen as the processor clock, and when lower power is desired, the low power oscillator may be chosen as the processor clock while the high accuracy clock is disabled. The high accuracy oscillator is used to clock a first timer circuit, while the low power oscillator is used to clock a second timer circuit. The second timer circuit output, in turn, is synchronized to the processor clock so that the programmable processor can utilize the second timer circuit even when the processor clock is asynchronous to the second timer circuit. When the high accuracy oscillator has been selected as the timing source to the programmable processor and to the first timer circuit, and the low power oscillator is clocking the second timer circuit, the programmable processor under program control can effectively measure the frequency of the "on-chip" low power oscillator in terms of the frequency of the high accuracy clock. Accordingly, when the high accuracy clock is disabled, the programmable processor can use the low power oscillator more accurately.
摘要翻译： 一种时钟电路，用于为内部低功耗振荡器提供低功率时钟源的高精度晶体振荡器时钟提供与“片外”晶体接口以提供高精度时钟信号的集成电路。 在程序控制下，可以选择时钟来驱动可编程处理器。 当需要高精度和稳定性时，可以选择晶体振荡器作为处理器时钟，并且当需要较低功率时，低功率振荡器可以被选择为处理器时钟，而高精度时钟被禁用。 高精度振荡器用于对第一定时器电路进行时钟，而低功耗振荡器用于对第二定时器电路进行时钟。 第二定时器电路输出又与处理器时钟同步，使得即使当处理器时钟与第二定时器电路异步时，可编程处理器也可以利用第二定时器电路。 当选择高精度振荡器作为可编程处理器和第一定时器电路的定时源时，低功耗振荡器对第二定时器电路进行计时，程序控制下的可编程处理器可以有效地测量“on 芯片“低功率振荡器在高精度时钟频率方面。 因此，当高精度时钟被禁用时，可编程处理器可以更精确地使用低功率振荡器。
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公开(公告)号：US07076260B1
公开(公告)日：2006-07-11
申请号：US09532020
申请日：2000-03-21
IPC分类号： H04Q7/20
CPC分类号： H04M1/72502 , H04W88/181
摘要： In a digital cordless telephone system, a different speech coding scheme is used in the audio path from the base unit to its remote handset than that which is used in the audio path in the opposite direction from the remote handset to the base unit. It is found that this unbalanced coding scheme optimizes overall system cost and performance. In particular, two different types, quality and/or bit rates of speech encoders are implemented in opposite directions of the same full-duplex audio path, providing an unbalanced coding in a digital cordless telephone. Implementation of different types of speech encoders in a common full duplex path optimizes system cost and performance. It is recognized by the invention that the communications link in a first direction from a base unit to its remote handset in a digital cordless telephone system potentially requires better codec and audio performance than the communications link in the opposite direction from the remote handset to base unit. Accordingly, to provide maximum efficiency and cost utilization, a digital cordless telephone system architecture and method provides a better speech coder in terms of quality in the base unit to remote handset direction of the communications link.
摘要翻译： 在数字无绳电话系统中，在从基本单元到其远程手机的音频路径中使用不同于在从远程手机到基本单元的相反方向上在音频路径中使用的语音编码方案。 发现这种不平衡编码方案优化了整个系统的成本和性能。 特别地，语音编码器的两种不同类型，质量和/或比特率在相同全双工音频路径的相反方向上实现，在数字无绳电话中提供不平衡编码。 在通用全双工路径中实现不同类型的语音编码器优化了系统成本和性能。 本发明认识到，在数字无绳电话系统中从基本单元到其远程手持机的第一方向上的通信链路潜在地需要比从远程手机到基站单元的相反方向上的通信链路更好的编解码器和音频性能 。 因此，为了提供最大的效率和成本利用，数字无绳电话系统架构和方法在通信链路的基站到远程手机方向的质量方面提供了更好的语音编码器。
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公开(公告)号：US06600793B1
公开(公告)日：2003-07-29
申请号：US09163429
申请日：1998-09-30
IPC分类号： H04L700
摘要： A timing recovery circuit and method which determines whether a sample point in a generated bit sequence is early or late based on binary logic which is already available used in generating a bit sequence by comparing energy magnitudes of adjacent bits. The waveform of an input symbol is correlated against reference waveforms. When the incoming waveform does not perfectly match a reference waveform, symbol energy less than maximum is output indicating that the timing of the sampling points is either early or late. Symbol energy magnitudes between adjacent bits are then compared. Using the bit pattern of the generated bit sequence and the results of comparisons of energy magnitudes of adjacent bits, it is determined whether the timing of the sampling points is early or whether it is late.
摘要翻译： 一种定时恢复电路和方法，其基于通过比较相邻比特的能量大小来生成比特序列已经可用的二进制逻辑来确定所生成的比特序列中的采样点是早还是晚。 输入符号的波形与参考波形相关。 当输入波形与参考波形不完全匹配时，输出小于最大值的符号能量，表示采样点的定时早或晚。 然后比较相邻位之间的符号能量大小。 使用生成的比特序列的比特模式和相邻比特的能量比较的结果，确定采样点的定时是否早，还是迟到。
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公开(公告)号：US07242696B2
公开(公告)日：2007-07-10
申请号：US09817054
申请日：2001-03-27
IPC分类号： H04J3/06
CPC分类号： H04J3/0605 , H04J3/06 , H04L7/0337 , H04L7/10
摘要： The portion of TDMA frames otherwise containing the sync word is eliminated for one or more data frames at the end of a TDMA data burst to provided added bandwidth for data payload or for a reduced bandwidth. Once a communication channel has been established and is in steady state mode (after receipt of one or more frames), the sync word is eliminated from the remaining frame structure. Drift of a local clock with respect to an incoming data stream is monitored using an oversampled or multiplied master clock to provide suitable resolution to determine an approximate position of an active edge of the master clock with respect to a bit or symbol being clocked. Any drift from center results in an adjustment of the local master clock. In a preferred embodiment, the drift is measured in a last bit or symbol of a received TDMA burst, and the master clock is adjusted to re-center the local master clock with respect to that last bit. Accordingly, the receiver is ‘tuned’ to the clock signal of the transmitting TDMA device such that the receiving TDMA device can predict where the next start of frame will occur. By doing so, the sync word is no longer necessary in the remaining frames of the TDMA burst to decode the start of next TDMA frame. The sync word may be included in more than one frames in the beginning of the TDMA burst, but is eliminated from one or more frames at the end of the TDMA burst.
摘要翻译： 在TDMA数据突发结束时，对于一个或多个数据帧，消除了否则包含同步字的TDMA帧的部分，以提供用于数据有效载荷或减小的带宽的附加带宽。 一旦通信信道已经建立并且处于稳态模式（在接收到一个或多个帧之后），则从剩余的帧结构中消除同步字。 使用过采样或倍增的主时钟监视本地时钟相对于输入数据流的漂移，以提供合适的分辨率来确定主时钟相对于被计时的位或符号的有效边沿的近似位置。 来自中心的漂移导致本地主时钟的调整。 在优选实施例中，在接收到的TDMA脉冲串的最后一位或符号中测量漂移，并调整主时钟以使本地主时钟相对于最后一位重新集中。 因此，接收机被“调谐”到发送TDMA设备的时钟信号，使得接收TDMA设备可以预测帧的下一个起始点将在哪里发生。 通过这样做，TDMA脉冲串的剩余帧中不再需要同步字来解码下一个TDMA帧的开始。 同步字可以包括在TDMA突发的开始的多于一帧中，但是在TDMA突发结束时从一个或多个帧中消除。
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公开(公告)号：US06608889B2
公开(公告)日：2003-08-19
申请号：US09768292
申请日：2001-01-25
申请人： Charles William Berthoud , Paul Joseph Davis , Jeffrey Paul Grundvig , Arupratan Gupta , Mohd Majed Hobbi , Lakshmi Narayana Jampanaboyana
发明人： Charles William Berthoud , Paul Joseph Davis , Jeffrey Paul Grundvig , Arupratan Gupta , Mohd Majed Hobbi , Lakshmi Narayana Jampanaboyana
IPC分类号： H04M1100
CPC分类号： H04M1/72502 , H04M1/274516 , H04M2250/02
摘要： A method and apparatus for transferring convenience feature data (e.g., speed dial numbers, etc.) from one telephone to another local telephone within the same home or small office. In particular, the telephone includes a memory located within a corded or cordless telephone configured for storing data, and a transfer module configured to transfer requested data between the memory and a target device in response to a transfer request. The corded telephone utilizes a DTMF generator/receiver, a demodulation/modulation module, or a Bluetooth module to establish a communication path between the corded telephone and the target device. The cordless telephone utilizes a DTMF generator/receiver, a demodulation/modulation module, a radio frequency (RF) transceiver, or a Bluetooth module to establish a communication path between the cordless telephone and the target device. A transfer request may be a download, upload, or synchronization request between the memory of the corded or cordless telephone and the target device. By providing means to transfer data between corded or cordless telephone and a transfer device, information may be automatically shared locally or remotely between multiple devices. Moreover, telephones with corrupted memories or erased memories may be automatically updated or restored.
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