Satellite cellular network resource management method and apparatus
    1.
    发明公开
    Satellite cellular network resource management method and apparatus 失效
    方法和资源管理设备与卫星蜂窝网络。

    公开(公告)号:EP0652649A3

    公开(公告)日:1999-09-15

    申请号:EP94117233.0

    申请日:1994-11-02

    申请人: MOTOROLA, INC.

    IPC分类号: H04B7/185

    CPC分类号: H04B7/18539

    摘要: A method for managing resource usage within a cellular communications system (10) having at least one satellite (12) and, capable of communicating with the satellite(s) (12), at least one controlling station (28) and multiple ground terminals (26). The controlling station (28) predicts (372, 380) system communication traffic and operating capabilities for a future period; generates (216) a system plan (250) and an individual operational plan (270-30n) for each satellite (12) based on the prediction; distributes (222) each individual operational plan (270-30n) to each corresponding satellite (12); monitors (226) execution of the system plan (250) during the future period to determine (228) whether the plan is operating acceptably and when the plan is not operating acceptably (228), generates (216) a new plan, or portion thereof, to alleviate the unacceptable operation; and repeats the foregoing steps for additional future periods. Each satellite (12) receives (502), stores (504), executes (224) and monitors execution (226) of its individual operational plan (270-30n) and transmits out-of-plan messages (338) to the controlling station (28) when it detects an out-of-plan condition (336).

    Feedback and shift unit
    3.
    发明公开
    Feedback and shift unit 失效
    反馈和移位

    公开(公告)号:EP0750316A3

    公开(公告)日:1998-04-08

    申请号:EP96109958.7

    申请日:1996-06-20

    申请人: MOTOROLA LTD

    IPC分类号: G11C19/00

    摘要: A feedback and shift unit is arranged to reduce to a minimum the number of processing steps required in a processor, such as a DSP, to achieve a particular operating function, such as a linear feedback shift or a stepping function used by encryption algorithms. The feedback and shift unit (50) comprises a linear feedback shift register (52) for storing a value of the feedback and shift unit. A tap register (56) stores a tap position indicator indicative of tap positions for the feedback and shift unit (50). An input provides data to the feedback and shift unit. A feedback matrix, coupled to receive the data from the input, provides data bits, generated in response to the data and the tap position indicator, that are shifted into the linear feedback shift register (52) to form the value stored therein.

    Protecting element and method for protecting a circuit
    4.
    发明公开
    Protecting element and method for protecting a circuit 失效
    用于保护电路保护元件和方法

    公开(公告)号:EP0766362A3

    公开(公告)日:1998-04-01

    申请号:EP96115213.9

    申请日:1996-09-23

    申请人: MOTOROLA, INC.

    发明人: Motter, Chang Su

    IPC分类号: H02H9/02 H02H5/04

    摘要: A protection element (10) protects a battery pack (36) from potential faulty conditions in a load (38). The protection element (10) includes a switch (12), a control FET (14), and three resistors (16, 18, and 22). Under normal operating conditions, the switch (12) is conductive and the control FET (14) is non-conductive. If a short circuit is detected, the controller(14) becomes conductive and turns off the switch (12). The switch (12) remains non-conductive until the load (38) is disconnected from the protection element (10). The protection element (10) further includes a temperature sensor (24) that turns off the switch (12) at high temperatures and a current limiting element (28) that imposes an upper limit on the current flowing through the protection element (10). Control signals can be applied to the gate electrodes of the switch (12) and the control FET (14) to modulate the current in the protection element (10).

    Method for reading and restoring data in a data storage element
    5.
    发明公开
    Method for reading and restoring data in a data storage element 失效
    数据读取和-wiederherstellungsverfahren数据存储元件

    公开(公告)号:EP0760515A3

    公开(公告)日:1998-01-07

    申请号:EP96113642.1

    申请日:1996-08-26

    申请人: MOTOROLA, INC.

    发明人: Tai, Jy-Der D.

    IPC分类号: G11C11/22

    CPC分类号: G11C11/22

    摘要: A method for reading and restoring data in a FERAM (10) is provided. The FERAM (10) comprises a FET (11) and a ferroelectric capacitor (12). The FET (11) has a gate connected to a word line (14), a source coupled to a plate line (15) via the ferroelectric capacitor (12), and a drain connected to a bit line (16). The reading process begins by placing a predetermined amount of charge in a bit line capacitor (17), which in turn charges the ferroelectric capacitor (12) after the FET (11) is switched on, resulting in a voltage drop determined by data stored in the FERAM (10) at the bit line (16). A sense amplifier (18) adjusts the voltage at the bit line (16) accordingly to read data from the FERAM (10). Applying a voltage at the plate line (15) and switching the FET (11) off restore the data to the FERAM (10).

    Method for implementing the add-compare-select operation in a Viterbi decoder
    6.
    发明公开
    Method for implementing the add-compare-select operation in a Viterbi decoder 失效
    一种用于实现维特比解码器的选择可比性add函数方法

    公开(公告)号:EP0788241A3

    公开(公告)日:1997-11-05

    申请号:EP96117651.8

    申请日:1996-11-04

    申请人: MOTOROLA, INC.

    IPC分类号: H03M13/00

    摘要: A parallel data structure and a dedicated Viterbi shift left instruction minimize the number of clock cycles required for decoding a convolutionally encoded signal in a data processing system (20) in software. Specifically, the data structure and Viterbi shift left instruction reduce the number of clock cycles required for performing an add-compare-select butterfly operation. The add-compare-select butterfly operation is included in a DO loop in a plurality of instructions for executing a Viterbi decoding algorithm, and is repeated a predetermined number of times, for choosing the best path through a trellis diagram.

    Handoff in a cellular commuinication system
    7.
    发明公开
    Handoff in a cellular commuinication system 无效
    越区切换在一个蜂窝通信系统

    公开(公告)号:EP0746172A3

    公开(公告)日:1997-09-03

    申请号:EP96110155.7

    申请日:1989-01-23

    申请人: MOTOROLA, INC.

    发明人: Felix, Kenneth A.

    IPC分类号: H04Q7/22 H04Q7/38

    摘要: A method of handoff for use at base sites (110) of a cellular telephone system for handing off from one of the base sites to another one of the base sites at least one of a plurality of cellular telephones (102) each transceiving data packets and sharing a cellular radio channel of the cellular telephone system, which channel may be packet-switched or digital. A handoff message is sent to one of the active ones of the plurality of cellular telephones in response to determined system loading or signal characteristic, as exemplified in FIG. 7.

    High frequency amplifier and control
    8.
    发明公开
    High frequency amplifier and control 失效
    Hochfrequenzverstärkerund Steuerung

    公开(公告)号:EP0789451A1

    公开(公告)日:1997-08-13

    申请号:EP97101439.4

    申请日:1997-01-30

    IPC分类号: H03F1/30 H03F1/52

    CPC分类号: H03F1/523 H03F1/305

    摘要: A monolithic RF amplifier circuit (10) suitable for use in the 0.8-2 GHz frequency range comprises, on-chip (12'), a gateable oscillator (24) running at about 2-5 times the amplifier input frequency or higher, coupled to a rectifier (30) and a low pass filter (34) for producing a DC signal which is fed via a bias/gain control circuit (46) to a bias / gain inputs (56, 58) of one or more amplification stages (60, 62) (e.g. GaAs FET) to provide bias therefore to ensure safe operation, and a priority control circuit (42) responsive to the bias. The priority control circuit (42) operates a power switch (18) that couples the amplification stages (60, 62) to a power supply, only when bias is present on their bias/gain inputs (56, 58) This protects the amplification stages (60, 62) against overcurrent operation. A separate external port (68) to the bias / gain control circuit (46) adjusts the magnitude of the bias to permit amplifier gain and power output to be adjusted. By gating the oscillator ON and OFF, high speed burst mode operation of the amplifier is achieved.

    摘要翻译: 适用于0.8-2GHz频率范围的单片RF放大器电路(10)包括片上(12'),以大约2-5倍放大器输入频率或更高频率运行的可选择振荡器(24),耦合 用于产生经由偏置/增益控制电路(46)馈送到一个或多个放大级的偏置/增益输入(56,58)的DC信号的整流器(30)和低通滤波器(34) (例如GaAs FET),以提供偏置以确保安全操作,以及响应偏压的优先控制电路(42)。 优先级控制电路(42)只有在偏置/偏置存在于它们的偏置/增益输入(56,58)上时才将功率开关18连接到电源上。这保护了放大级 (60,62)防过电流操作。 与偏置/增益控制电路(46)的单独的外部端口(68)调整偏置的大小以允许调整放大器增益和功率输出。 通过选通振荡器的ON和OFF,实现了放大器的高速脉冲串模式操作。

    Apparatus and method for determining a time that a system's main power was inactive
    9.
    发明公开
    Apparatus and method for determining a time that a system's main power was inactive 失效
    装置和用于确定在此期间,系统的主电源是无活性的时间段的方法。

    公开(公告)号:EP0681272A3

    公开(公告)日:1997-07-09

    申请号:EP95106321.3

    申请日:1995-04-27

    申请人: MOTOROLA, INC.

    IPC分类号: G07C5/04

    CPC分类号: G07C5/04 G01R31/007 G07C3/04

    摘要: An apparatus and method for determining a time that a system's main power was inactive includes a counter circuit (171) for accumulating transitions of a clock signal (149) while the system's main power (117) is inactive. Preferably, another circuit (159, 125) determines a periodicity of the clock signal (149) after the system's main power (117) transitions active. Then a computational circuit, preferably a microcontroller (129), determines the time (183) that the system's main power (117) was inactive dependent on a number of transitions of the clock signal (149) accumulated by the counter circuit (171) when the system's main power (119) was inactive and the determined periodicity of the clock signal (149) after the system's main power (117) transitions active. Preferably, this apparatus and method are used in a vehicle to determine how long a time that an engine is turned off and to modify an engine control strategy dependent on that determined time.