公开(公告)号：US5526403A

公开(公告)日：1996-06-11

申请号：US394068

申请日：1995-02-24

申请人： Ambrose W.C. Tam

发明人： Ambrose W.C. Tam

IPC分类号： H04M1/725 ,  H04W4/16 ,  H04W88/02 ,  H04Q7/38

CPC分类号： H04W4/16 ,  H04M1/725 ,  H04W88/021

摘要： A wireline interface permitting a cellular telephone transceiver to originate and receive calls using both cellular and wireline services. The invention permits a subscriber unit to operate as a standard cellular telephone when it is disconnected from a land-based telephone line, and as both a full-featured telephone and a full-featured cellular telephone when it is connected to a wireline. A wireline interface circuit provides on/off hook, calling identification, and audio signal conversion functions on the wireline signals. A duplexed audio switch permits the audio signals provided to and from a cellular-type handset to be connected either to the cellular transceiver or to the wireline interface adapter, under control of the user. As a result, any handset-provided functions such as speed dialing or hands-free operation are available for use when operating on a wireline circuit as well as when operating on a cellular radio link. Call waiting is implemented between the cellular and wireline interfaces, so that the user may hold a wireline call when a cellular call is incoming, as vice versa. With automatic or semi-automatic call forwarding of the cellular line, permits the user to be accessed through a personal telephone number, regardless of whether the unit is in cellular or wireline mode. In addition, any calling identification information made available during a wireline call may be provided to a display on the handset.

摘要翻译： 有线接口允许蜂窝电话收发机使用蜂窝和有线服务发起和接收呼叫。 本发明允许用户单元在与陆基电话线路断开连接时作为标准蜂窝电话进行操作，并且当连接到有线线路时允许用户单元作为全功能电话和全功能蜂窝电话两者操作。 有线接口电路在有线信号上提供开/关挂机，呼叫识别和音频信号转换功能。 双工音频交换机允许在用户的控制下，提供给蜂窝型手机的蜂窝型手机的音频信号连接到蜂窝收发器或有线接口适配器。 因此，任何手机提供的功能，例如快速拨号或免提操作都可用于在有线电路上操作以及在蜂窝无线电链路上操作时使用。 在蜂窝电话和有线接口之间实现呼叫等待，从而当蜂窝呼叫进入时用户可以持有有线呼叫，反之亦然。 通过蜂窝线路的自动或半自动呼叫转移，允许通过个人电话号码访问用户，而不管该单元是处于蜂窝还是有线模式。 此外，在有线呼叫期间可用的任何呼叫识别信息可以被提供给手机上的显示器。

公开(公告)号：US5495499A

公开(公告)日：1996-02-27

申请号：US383725

申请日：1995-02-03

申请人： Patrick Fenton ,  Albert J. Van Dierendonck

发明人： Patrick Fenton ,  Albert J. Van Dierendonck

IPC分类号： G01S1/00 ,  H04B1/7085 ,  H04B1/709 ,  H04L9/00

CPC分类号： H04B1/7085 ,  G01S19/215 ,  G01S19/22 ,  G01S19/30 ,  G01S19/37 ,  G01S19/426 ,  H04B1/709 ,  G01S19/29

摘要： A receiver for pseudorandom noise (PRN) encoded signals consisting of a sampling circuit, multiple carrier and code synchronizing circuits, and multiple digital autocorrelators. The sampling circuit provides digital samples of a received composite signal to each of the several receiver channel circuits. The synchronizing circuits are preferably non-coherent, in the sense that they track any phase shifts in the received signal and adjust the frequency and phase of a locally generated carrier reference signal accordingly, even in the presence of Doppler or ionospheric distortion. The autocorrelators in each channel form a delay lock loop (DLL) which correlates the digital samples of the composite signal with locally generated PRN code values to produce a plurality of (early, late), or (punctual, early-minus-late) correlation signals. The time delay spacing between the (early, late), and (punctual, early-minus-late) correlation signals are dynamically adjusted, such that in an initial acquisition mode, the delay spacing is relatively wide, on the order of approximately one PRN code chip time; once PRN code lock is achieved, the code delay spacing is narrowed to a fraction of a PRN code chip time.

摘要翻译： 用于由抽样电路，多载波和码同步电路以及多个数字自相关器组成的伪随机噪声（PRN）编码信号的接收机。 采样电路将接收到的复合信号的数字样本提供给几个接收机通道电路中的每一个。 在同步电路优选地是非相干的，即在它们跟踪接收信号中的任何相移并相应地调整本地产生的载波参考信号的频率和相位的意义上，即使在存在多普勒或电离层失真的情况下也是如此。 每个通道中的自相关器形成延迟锁定环（DLL），其将复合信号的数字样本与本地生成的PRN码值相关联，以产生多个（早，晚）或（准时，早 - 减 - 晚）相关 信号。 （早，晚）和（准时，早 - 晚 - 晚）相关信号之间的时间延迟间隔被动态调整，使得在初始采集模式中，延迟间隔相对较宽，约为一个PRN 代码片时间; 一旦实现了PRN码锁定，码延迟间隔被缩小到PRN码片片时间的一小部分。

公开(公告)号：US5422917A

公开(公告)日：1995-06-06

申请号：US245

申请日：1993-01-04

申请人： Kenneth E. Scott

发明人： Kenneth E. Scott

IPC分类号： H03J7/02 ,  H04L7/02 ,  H04L7/04 ,  H04L27/00 ,  H04L7/00 ,  H04L25/36 ,  H04L25/40

CPC分类号： H03J7/02 ,  H04L2027/0065

摘要： A receiver (10) for extracting complex values by reference to a local frequency reference determines the frequency offset between a local oscillator (16) and the carrier by employing a circuit (40) for determining a "phase rotation." When a record of the input signal is determined to have resulted from a predetermined reference sequence of complex values, the phase-rotation circuit (40) compares the phases of complex values extracted from this record with corresponding symbols of the reference sequence. By comparing this difference for one part of the sequence with that for another, circuitry (38, 50, 52, 53, 54) in the receiver infers the frequency offset between the transmitter reference and the receiver reference, and a complex multiplier (34) compensates for this offset by multiplying the successive complex-valued samples by a complex exponential whose frequency is the negative of the frequency offset.

摘要翻译： 通过参考本地频率参考来提取复数值的接收器（10）通过采用用于确定“相位旋转”的电路（40）来确定本地振荡器（16）和载波之间的频率偏移。 当确定输入信号的记录是由预定的复数值的参考序列导致时，相位旋转电路（40）将从该记录提取的复数值的相位与参考序列的相应符号进行比较。 通过将该序列的一部分与另一部分的差异进行比较，接收机中的电路（38,50,52,53,54）推断发射机参考和接收机参考之间的频率偏移，以及复数乘法器（34） 通过将连续的复值样本乘以频率为频率偏移的负的复指数，来补偿该偏移。

公开(公告)号：US5390207A

公开(公告)日：1995-02-14

申请号：US217768

申请日：1994-03-24

申请人： Patrick Fenton ,  Albert J. Van Dierendonck

发明人： Patrick Fenton ,  Albert J. Van Dierendonck

IPC分类号： G01S1/00 ,  H04B1/7085 ,  H04B1/709 ,  G01S5/02 ,  H04B7/185

CPC分类号： H04B1/7085 ,  G01S19/215 ,  G01S19/22 ,  G01S19/30 ,  G01S19/37 ,  G01S19/426 ,  H04B1/709 ,  G01S19/29

摘要： A receiver for pseudorandom noise (PRN) encoded signals consisting of a sampling circuit, multiple carrier and code synchronizing circuits, and multiple digital autocorrelators. The sampling circuit provides digital samples of a received composite signal to each of the several receiver channel circuits. The synchronizing circuits are preferably non-coherent, in the sense that they track any phase shifts in the received signal and adjust the frequency and phase of a locally generated carrier reference signal accordingly, even in the presence of Doppler or ionospheric distortion. The autocorrelators in each channel form a delay lock loop (DLL) which correlates the digital samples of the composite signal with locally generated PRN code values to produce a plurality of (early, late), or (punctual, early-minus-late) correlation signals. Thus, during an initial acquisition mode, the delay spacing is relatively wide, on the order of approximately one PRN code chip time. However, once PRN code synchronism has been achieved, the code delay spacing is narrowed, to a fraction of a PRN code chip time. There are several advantages to this arrangement, especially in environments wherein multipath distortion in the received composite signal is of the same order of magnitude as a PRN code chip time.

摘要翻译： 用于由抽样电路，多载波和码同步电路以及多个数字自相关器组成的伪随机噪声（PRN）编码信号的接收机。 采样电路将接收到的复合信号的数字样本提供给几个接收机通道电路中的每一个。 同步电路优选地是非相干的，即在它们跟踪接收信号中的任何相移并相应地调整本地产生的载波参考信号的频率和相位的意义上，即使在存在多普勒或电离层失真的情况下也是如此。 每个通道中的自相关器形成延迟锁定环（DLL），其将复合信号的数字样本与本地生成的PRN码值相关联，以产生多个（早，晚）或（准时，早 - 减 - 晚）相关 信号。 因此，在初始采集模式期间，延迟间隔相对较宽，大约为一个PRN码片时间。 然而，一旦实现了PRN代码同步，则代码延迟间隔变窄，达到PRN码片片时间的一小部分。 这种布置有几个优点，特别是在接收到的复合信号中的多径失真与PRN码片时间具有相同数量级的环境中。

公开(公告)号：US5309482A

公开(公告)日：1994-05-03

申请号：US859981

申请日：1992-03-30

申请人： Andrew S. Wright ,  Theodorus J. Smit ,  Martin C. Alcock

发明人： Andrew S. Wright ,  Theodorus J. Smit ,  Martin C. Alcock

IPC分类号： H03H17/02 ,  H04B1/30 ,  H04L7/02 ,  H04L25/03 ,  H04B1/10

CPC分类号： H04L7/0029 ,  H03H17/0254 ,  H04B1/30 ,  H04L25/03853 ,  H04L2007/047

摘要： A radio receiver's digital matched filter (52') is intended to match a pulse-shaping filter (23) in the transmitter whose signals it receives. However, the clock signal on which the matched filter's timing is based is generated by a receiver clock (58') that is independent of the transmitter clock (56) and that is subjected to no timing adjustment to bring the two clock signals into synchronism. So as to ensure that the matched and pulse-shaping filters work together as a Nyquist filter, therefore, a timing-recovery circuit (60') senses the timing offset in the matched filter's output, and a coefficient generator (80) adjusts the matched filter's coefficients in such a manner that the filter itself imposes the delay needed for the required timing relationship between the filters.

摘要翻译： 无线电接收机的数字匹配滤波器（52'）旨在匹配其接收的信号的发射机中的脉冲整形滤波器（23）。 然而，匹配滤波器的定时所基于的时钟信号由独立于发射机时钟（56）的接收器时钟（58'）产生，并且经受无定时调整以使两个时钟信号同步。 因此，为了确保匹配的脉冲整形滤波器作为奈奎斯特滤波器一起工作，因此定时恢复电路（60'）感测匹配滤波器的输出中的定时偏移，系数发生器（80）调整匹配的 滤波器的系数使得滤波器本身对滤波器之间所需的定时关系施加所需的延迟。

公开(公告)号：USD328293S

公开(公告)日：1992-07-28

申请号：US521039

申请日：1990-05-08

申请人： William Mak ,  Fernd van Engelen ,  Bradley Clarkson

设计人： William Mak ,  Fernd van Engelen ,  Bradley Clarkson

公开(公告)号：US6061024A

公开(公告)日：2000-05-09

申请号：US983145

申请日：1992-11-30

申请人： Andrew E. McGirr ,  Paul L. Camwell ,  John G. McRory

发明人： Andrew E. McGirr ,  Paul L. Camwell ,  John G. McRory

IPC分类号： H01Q1/24 ,  H01Q1/52 ,  H01Q9/04 ,  H01Q1/38

CPC分类号： H01Q1/525 ,  H01Q1/243 ,  H01Q9/0442

摘要： An antenna for use with portable duplex radio transceivers, such as those found in hand-held cellular telephones, which includes a pair of co-planar radiating patch elements elevated above a conductive surface by a conductive bar. The surface and bar define a reference ground plane which inherently isolates the patches. The patches are shaped so that they operate in a desired frequency band as well as band-pass filters--one of the patches is tuned to the transmit band and serves a transmit structure, and the other patch is tuned to the receive band and serves as a receive structure. Switching devices such as positive-intrinsic negative (PIN) diodes can be disposed along the space between the patches and the ground plane to allow each structure to be tuned. The antenna is efficient, because of inherent isolation between the receive and transmit patches, and eases the front end filtering functions traditionally performed by a duplexer. It can be completely enclosed within the chassis of a hand-held telephone.

摘要翻译： 一种用于便携式双工无线电收发机的天线，例如在手持蜂窝电话中发现的天线，其包括通过导电棒在导电表面上方升高的一对共面辐射贴片元件。 表面和杆定义了固有地隔离贴片的参考接地平面。 贴片被成形为使得它们在期望的频带中工作，以及带通滤波器 - 其中一个贴片被调谐到发送频带并且用于发送结构，并且另一个音调被调谐到接收频带并且用作 接收结构。 诸如正本征负极（PIN）二极管的开关器件可以沿着贴片和接地平面之间的空间设置，以允许每个结构被调谐。 由于接收和发送补丁之间的固有隔离，天线是高效的，并且简化了传统上由双工器执行的前端过滤功能。 它可以完全封闭在手持电话机的底盘内。

公开(公告)号：US5471518A

公开(公告)日：1995-11-28

申请号：US104870

申请日：1993-08-10

申请人： Douglas K. Barber ,  Stephan W. Hortensius

发明人： Douglas K. Barber ,  Stephan W. Hortensius

IPC分类号： G11C16/10 ,  H04M1/725 ,  H04M11/00

CPC分类号： G11C16/10 ,  H04M1/72525

摘要： A cellular telephone (10) stores both the programming for its processor (18) and certain changing parameters in the same flash-memory device (36). The device is sectored so that the changeable parameters can be erased without erasing the program contents, and they are stored and fetched in an associative manner so that erasures are required only infrequently.

摘要翻译： 蜂窝电话（10）将用于其处理器（18）的编程和某些改变参数存储在同一闪存设备（36）中。 该设备被分区，以便可擦除可更改的参数而不擦除程序内容，并且以相关方式存储和取出该设备，使得不经常需要擦除。

公开(公告)号：US5432859A

公开(公告)日：1995-07-11

申请号：US47556

申请日：1993-02-23

申请人： Jin Yang ,  Andrew Sendyk

发明人： Jin Yang ,  Andrew Sendyk

IPC分类号： H04R3/00 ,  H04B15/00

CPC分类号： H04R3/00

摘要： A noise-suppression circuit (10) divides the signal from a microphone (12) into a plurality of frequency sub-bands by means of a noise-band divider (18) and a subtraction circuit (36). By means of gain circuits (32) and (34), it applies separate gains to the separate bands and then recombines them in a signal combiner (38) to generate an output signal in which the noise has been suppressed. Separate gains are applied only to the lower subbands in the voice spectrum. Accordingly, the noise-band divider (18) is required to compute spectral components for only those bands. By employing a sliding-discrete-Fourier-transform method, the noise-band divider (18) computes the spectral components on a sample-by-sample basis, and circuitry (50, 52) for determining the individual gains can therefore update them on a sample-by-sample basis, too.

摘要翻译： 噪声抑制电路（10）通过噪声带分频器（18）和减法电路（36）将来自麦克风（12）的信号分成多个频率子频带。 借助于增益电路（32）和（34），它向单独的频带施加单独的增益，然后将它们复合到信号组合器（38）中，以产生噪声被抑制的输出信号。 单独的增益仅应用于语音频谱中的较低子带。 因此，需要噪声带分频器（18）来计算仅这些频带的频谱分量。 通过采用滑动离散傅立叶变换方法，噪声带分频器（18）逐个采样地计算频谱分量，因此用于确定各个增益的电路（50,52）可以在 也是逐个样本的基础。

公开(公告)号：US5428666A

公开(公告)日：1995-06-27

申请号：US292300

申请日：1994-08-16

申请人： Kipling W. Fyfe ,  Susan McIntyre

发明人： Kipling W. Fyfe ,  Susan McIntyre

IPC分类号： H04B1/40 ,  H04W4/00 ,  H04W8/22 ,  H04W8/26 ,  H04W24/00 ,  H04W76/02 ,  H04W84/04 ,  H04W88/06 ,  H04M11/00

CPC分类号： H04W8/26 ,  H04W24/00 ,  H04W4/00 ,  H04W76/02 ,  H04W8/22 ,  H04W84/042 ,  H04W88/06

摘要： A mobile radio-telephones having a plurality of number assignment modules ("NAM's") selects automatically one of the NAM's for use for communication. In a preferred embodiment, the mobile radio-telephone attempts to match system identification data in received control signals with system identification data stored in the NAM's, and, on encountering a match, will use the NAM containing the matched system identification for telephone communication.

摘要翻译： 具有多个号码分配模块（“NAM”）的移动无线电话机自动选择用于通信的NAM之一。 在优选实施例中，移动无线电话机尝试将接收到的控制信号中的系统识别数据与存储在NAM中的系统识别数据相匹配，并且在遇到匹配时将使用包含用于电话通信的匹配系统标识的NAM。