Linearized three state phase detector
    11.
    发明授权
    Linearized three state phase detector 失效
    线性三态相位检测器

    公开(公告)号:US4970475A

    公开(公告)日:1990-11-13

    申请号:US500626

    申请日:1990-03-28

    申请人: Steven F. Gillig

    发明人: Steven F. Gillig

    IPC分类号: H03D13/00 H03L7/089

    CPC分类号: H03D13/004 H03L7/0891

    摘要: A linearized three state phase detector (300) that exhibits a linear transfer function of phase to current or charge at and around the zero phase error region. The inputs to the D flip-flops (301 and 302) are tied to a logic high. the first flip-flop (301) is clocked with reference signal F.sub.r while the other flip-flop (302) is clocked with a variable frequency feedback signal F.sub.v. F.sub.v is typically from a voltage controlled oscillator in a phase locked loop. The outputs of the flip-flops are ANDed together with the result of this operation going through a delay element (304) before reseting one of the flip-flops (301). The other flip-flop (302) is reset by the output of the AND gate (304) without the delay element (304). Each flip-flop output enables a charge pump--one negative polarity (306) and one positive polarity (305). The present invention will maintain a lock condition in a phase locked loop by extending the DOWN pulse enabling the negative polarity charge pump (306) to the same width as the UP pulse that enables the positive pump (305). This will create a net zero charge from the present invention.

    METHOD AND APPARATUS FOR ALLOCATING SPECTRUM
    12.
    发明申请
    METHOD AND APPARATUS FOR ALLOCATING SPECTRUM 有权
    分配光谱的方法和装置

    公开(公告)号:US20110205979A1

    公开(公告)日:2011-08-25

    申请号:US12710490

    申请日:2010-02-23

    IPC分类号: H04W72/04

    CPC分类号: H04W72/048

    摘要: A method and apparatus for allocating spectrum within a wireless communication system is provided herein. During operation, a first base station will determine a location of a UE wishing to transmit. A database will be accessed containing wireless coverage area information for base stations with overlapping coverage with the first base station. Based on this information the first base station will determine if the UE is within an overlapping coverage area of multiple base stations. Spectrum will be assigned to the wireless equipment in a guard band, based at least in part on the determination that the UE is not within the overlapping coverage area.

    摘要翻译: 本文提供了一种用于在无线通信系统内分配频谱的方法和装置。 在操作期间,第一基站将确定希望发送的UE的位置。 将访问包含与第一基站重叠覆盖的基站的无线覆盖区域信息的数据库。 基于该信息,第一基站将确定UE是否在多个基站的重叠覆盖区域内。 至少部分地基于UE不在重叠覆盖区域内的确定,频谱将被分配给保护频带中的无线设备。

    METHOD AND APPARATUS FOR DETERMINING APPROPRIATE CHANNELS FOR COMMUNICATION
    14.
    发明申请
    METHOD AND APPARATUS FOR DETERMINING APPROPRIATE CHANNELS FOR COMMUNICATION 有权
    用于确定通信的适当通道的方法和装置

    公开(公告)号:US20080101284A1

    公开(公告)日:2008-05-01

    申请号:US11626921

    申请日:2007-01-25

    IPC分类号: H04Q7/00

    摘要: During operation of a secondary communication system, nodes having different channel monitoring capabilities or requirements will cooperatively monitor possible frequencies for transmissions, each node using only a subset of all possible modulation sensing schemes. All nodes will share channel occupancy information to other nodes within the communication system. For example, a first group of nodes may monitor possible frequencies for television transmissions, while a second group of nodes may monitor the possible frequencies for APCO 25 transmissions. A group of nodes may also cooperatively monitor possible frequencies for more than one type of modulation transmission. Channel information will be shared among the nodes.

    摘要翻译: 在二次通信系统的操作期间,具有不同信道监测能力或需求的节点将协同地监测传输的可能频率,每个节点仅使用所有可能的调制感测方案的子集。 所有节点将共享信道占用信息到通信系统内的其他节点。 例如,第一组节点可以监视电视传输的可能频率,而第二组节点可监视APCO 25传输的可能频率。 一组节点还可以协作地监视多于一种类型的调制传输的可能频率。 频道信息将在节点之间共享。

    Method, device, phone and base station for providing envelope-following
for variable envelope radio frequency signals
    15.
    发明授权
    Method, device, phone and base station for providing envelope-following for variable envelope radio frequency signals 失效
    方法,设备,电话和基站,为可变包络射频信号提供包络跟踪

    公开(公告)号:US6141541A

    公开(公告)日:2000-10-31

    申请号:US1762

    申请日:1997-12-31

    摘要: A method (200) and device (100) provide an efficient linear power amplifier that generates a variable-envelope radio frequency RF signal. The method includes the steps of: A) using an efficient envelope-following unit to output a supply voltage in accordance with a variable envelope of an input baseband signal, wherein using the efficient envelope-following unit includes: 1) using a bandwidth-limiting mapping unit to determine a reference signal based on the baseband signal; and 2) using an envelope-tracking power converter to output a supply voltage, responsive to the reference signal, to the linear RF power amplifier; B) providing an RF input signal with amplitude and phase information to a linear RF power amplifier; and C) using the linear RF power amplifier to output a power-efficient amplified variable-envelope RF signal with substantially a same amplitude and phase information as the RF input signal.

    摘要翻译: 一种方法(200)和装置(100)提供一种生成可变包络射频RF信号的有效线性功率放大器。 该方法包括以下步骤:A)使用有效的包络跟随单元根据输入基带信号的可变包络输出电源电压,其中使用有效包络跟随单元包括:1)使用带宽限制 映射单元,以基于所述基带信号确定参考信号; 以及2)使用包络跟踪功率转换器将响应于所述参考信号的电源电压输出到所述线性RF功率放大器; B)向线性RF功率放大器提供具有幅度和相位信息的RF输入信号; 和C)使用线性RF功率放大器输出具有与RF输入信号基本相同的幅度和相位信息的功率有效的放大的可变包络RF信号。

    Frequency synthesizer with temperature compensation and frequency
multiplication and method of providing the same
    16.
    发明授权
    Frequency synthesizer with temperature compensation and frequency multiplication and method of providing the same 失效
    频率合成器具有温度补偿和倍频和提供相同的方法

    公开(公告)号:US5604468A

    公开(公告)日:1997-02-18

    申请号:US635487

    申请日:1996-04-22

    申请人: Steven F. Gillig

    发明人: Steven F. Gillig

    摘要: A frequency synthesizer (200) with temperature compensation and frequently multiplication. The synthesizer (200) having a temperature uncompensated frequency oscillator (202) coupled to a phase locked loop (206) including at least one temperature compensating and frequency multiplication element (208). The element (208) preferably being a multi-modulus divider. The element (208) is programmed by a control circuit (210) to vary as a function of temperature and to vary as a function of a fractional frequency multiplication factor. The element (208) also may provide adjustment of the nominal frequency of the frequency oscillator (202). The frequency oscillator (202) and preferably all the elements of the synthesizer (200) are temperature compensated by the element (208) to produce a temperature stable multiplied output frequency (238).

    摘要翻译: 频率合成器(200),具有温度补偿和频繁乘法。 合成器(200)具有耦合到包括至少一个温度补偿和倍频元件(208)的锁相环(206)的温度未补偿的频率振荡器(202)。 元件(208)优选地是多模式分配器。 元件(208)由控制电路(210)编程,以作为温度的函数而变化,并且作为分数倍增因子的函数而变化。 元件(208)还可以提供频率振荡器(202)的标称频率的调节。 频率振荡器(202),优选地,合成器(200)的所有元件由元件(208)进行温度补偿,以产生温度稳定的乘法输出频率(238)。

    Filtering device for use in a phase locked loop controller
    17.
    发明授权
    Filtering device for use in a phase locked loop controller 失效
    用于锁相环控制器的滤波装置

    公开(公告)号:US5424689A

    公开(公告)日:1995-06-13

    申请号:US172000

    申请日:1993-12-22

    IPC分类号: H03L7/089 H03L7/107 H03L7/093

    CPC分类号: H03L7/107 H03L7/0893

    摘要: A phase lock loop (PLL) frequency synthesizer is used in a radiotelephone to provide a reference frequency to a transmitter or a receiver. This particular PLL frequency synthesizer has a wide bandwidth control loop having a high current charge pump (417) and a narrow bandwidth control loop having a low current charge pump (411). A deadzone circuit (413) is used at an output of a phase detector (405) to control the application of an error signal to the high current charge pump (417). Additionally, the PLL frequency synthesizer utilizes a loop filter (419). The loop filter (419) receives two correction signals (409', 415') and provides a single control signal for the VCO (voltage controlled oscillator) (423). The loop filter contains two time constants formed from resistive and capacitive elements. The two time constants control the bandwidth of the two control loops.

    摘要翻译: 在无线电话机中使用锁相环(PLL)频率合成器来向发射机或接收机提供参考频率。 该特定PLL频率合成器具有宽带控制环路,具有高电流电荷泵(417)和具有低电流电荷泵(411)的窄带宽控制回路。 在相位检测器(405)的输出处使用死区电路(413)来控制向高电流电荷泵(417)施加误差信号。 此外,PLL频率合成器利用环路滤波器(419)。 环路滤波器(419)接收两个校正信号(409',415'),并为VCO(压控振荡器)(423)提供单个控制信号。 环路滤波器包含由电阻和电容元件形成的两个时间常数。 两个时间常数控制两个控制回路的带宽。

    Cellular cordless telephone
    18.
    发明授权
    Cellular cordless telephone 失效
    手机无绳电话

    公开(公告)号:US4989230A

    公开(公告)日:1991-01-29

    申请号:US249041

    申请日:1988-09-23

    摘要: A cellular cordless telephone (10) operates with both a cordless base station (180) and a cellular base station (190) and cellular control terminal (196). In one embodiment (FIG. 2), a cellular cordless telephone (100) includes a cellular transceiver (120), antenna (128), keyboard (140), a display (180), handset (160), and microcomputer (130) together with a cordless transceiver (110) and antenna (118), all of which may be in a single housing. In another embodiment (FIG. 3), a cellular cordless telephone (200) includes a cellular telephone (220) and a cordless telephone transceiver (210) which may be a plugable module. Whenever cellular cordless telephone (10) is within range of cordless base station (180), telephone calls may be made over the cordless radio channel or transferred from the cellular radio channels to the cordless radio channel. If the cellular cordless telephone (10) thereafter moves out of range of the cordless base station (180), telephone calls may be made over the cellular radio channels or transferred from the cordless radio channel to one of the cellular telephone channels.

    摘要翻译: 蜂窝无绳电话(10)与无绳基站(180)和蜂窝基站(190)和蜂窝控制终端(196)一起工作。 在一个实施例(图2)中,蜂窝无绳电话(100)包括蜂窝收发器(120),天线(128),键盘(140),显示器(180),手机(160)和微计算机(130) 以及无绳收发器(110)和天线(118),所有这些都可以在单个外壳中。 在另一实施例(图3)中,蜂窝无绳电话(200)包括蜂窝电话(220)和无绳电话收发机(210),其可以是可插拔模块。 无线电话机(10)每当无线基站(180)的范围内时,可以通过无线无线电信道进行电话呼叫,或从蜂窝无线电信道传送到无绳无线电信道。 如果蜂窝无绳电话(10)此后移动到无绳基站(180)的范围之外,则可以通过蜂窝无线电信道进行电话呼叫或从无绳无线电信道传送到蜂窝电话信道之一。

    Collaborative searching
    19.
    发明授权
    Collaborative searching 有权
    协同搜索

    公开(公告)号:US08090732B2

    公开(公告)日:2012-01-03

    申请号:US12335885

    申请日:2008-12-16

    IPC分类号: G06F7/00 G06F17/30

    摘要: Each user can contribute to an original search and to refining the results of the search. Preferences of all of the users are considered in the search even while those preferences can be kept private. In some embodiments of the present invention, at least two users each submit a search query. The multiple search queries are logically combined to produce one set of search results. The results can be reviewed by the users and refined if necessary. In some embodiments, a search query can be specified by a single user, but the search engine takes into consideration the stored preferences of multiple users (in addition to the search query itself, of course).

    摘要翻译: 每个用户可以对原始搜索做出贡献,并提炼搜索结果。 即使这些偏好可以保持私密,所有用户的偏好都在搜索中被考虑。 在本发明的一些实施例中,至少两个用户每个提交搜索查询。 多个搜索查询被逻辑组合以产生一组搜索结果。 结果可以由用户审查,如有必要,进行细化。 在一些实施例中,搜索查询可以由单个用户指定,但是搜索引擎考虑到存储的多个用户的偏好(当然,除了搜索查询本身之外)。

    Method and apparatus for determining appropriate channels for communication
    20.
    发明授权
    Method and apparatus for determining appropriate channels for communication 有权
    用于确定通信的适当信道的方法和装置

    公开(公告)号:US07860500B2

    公开(公告)日:2010-12-28

    申请号:US11626921

    申请日:2007-01-25

    IPC分类号: H04B1/38

    摘要: During operation of a secondary communication system, nodes having different channel monitoring capabilities or requirements will cooperatively monitor possible frequencies for transmissions, each node using only a subset of all possible modulation sensing schemes. All nodes will share channel occupancy information to other nodes within the communication system. For example, a first group of nodes may monitor possible frequencies for television transmissions, while a second group of nodes may monitor the possible frequencies for APCO 25 transmissions. A group of nodes may also cooperatively monitor possible frequencies for more than one type of modulation transmission. Channel information will be shared among the nodes.

    摘要翻译: 在二次通信系统的操作期间,具有不同信道监测能力或需求的节点将协同地监测传输的可能频率,每个节点仅使用所有可能的调制感测方案的子集。 所有节点将共享信道占用信息到通信系统内的其他节点。 例如,第一组节点可以监视电视传输的可能频率,而第二组节点可监视APCO 25传输的可能频率。 一组节点还可以协作地监视多于一种类型的调制传输的可能频率。 频道信息将在节点之间共享。