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1874 条记录 (耗时 0.02 秒)

    TEMPERATURE COMPENSATION ARRANGEMENT AND CURRENT REFERENCE CIRCUIT
    1.
    发明授权
    TEMPERATURE COMPENSATION ARRANGEMENT AND CURRENT REFERENCE CIRCUIT 有权
    安排温度补偿和恒电源电路

    公开(公告)号：EP1144034B1

    公开(公告)日：2004-04-28

    申请号：EP99931114.5

    申请日：1999-06-18

    申请人： MOTOROLA, INC.

    发明人： RUSZNYAK, Andreas

    IPC分类号： G05F3/24

    CPC分类号： G05F3/245

    摘要： A temperature compensation arrangement is provided for a current reference circuit. The current reference circuit has a voltage generator coupled to provide a voltage to a resistor, which generates a current in dependence upon the voltage. The arrangement includes a current source, arranged to be controlled by a control voltage from the voltage generator, and a diode arrangement coupled in series with the current source for deriving therefrom a control voltage. A compensating transitor is coupled to receive the control voltage for providing a temperature compensating supplemental current which is combined with the reference current to produce a combined current. The diode arrangement and the compensating transistor are arranged such that the combined current is substantially temperature independent.

    A CELLULAR TELEPHONE CAPABLE OF DISPLAYING A PICTURE FILE
    2.
    发明公开
    A CELLULAR TELEPHONE CAPABLE OF DISPLAYING A PICTURE FILE 审中-公开
    移动电话，图像文件被发现可以

    公开(公告)号：EP1410672A1

    公开(公告)日：2004-04-21

    申请号：EP01990860.7

    申请日：2001-11-08

    申请人： King, John J. ,  King, Christina J.

    发明人： King, John J. ,  King, Christina J.

    IPC分类号： H04Q7/38 ,  H04M3/42

    CPC分类号： H04M1/72544 ,  H04M1/72563

    摘要： A cellular telephone (102) capable of displaying a picture file (308) comprises a display (104) on the cellular telephone; a control circuit (302) coupled to the display, the control circuit enabling display of the picture file as a screen saver on the cellular telephone; and a user interface (303) coupled to the control circuit, the user interface enabling a user of the cellular telephone to access a screen saver program.

    Method for reducing transmission delays in a packet transmission system
    7.
    发明公开
    Method for reducing transmission delays in a packet transmission system 失效
    一种用于减少在分组传输系统中的传输延迟的方法

    公开(公告)号：EP0647045A3

    公开(公告)日：2003-09-17

    申请号：EP94115564.0

    申请日：1994-10-04

    申请人： MOTOROLA, INC.

    发明人： Buchholz, Dale R. ,  Robbins, Karen E. ,  Hamilton, R. Lee, Jr. ,  Doss, William K.

    IPC分类号： H04L12/56 ,  H04L12/28 ,  H04L1/18 ,  H04B7/212 ,  H04J3/16

    CPC分类号： H04L47/10 ,  H04L1/1614 ,  H04W28/14 ,  H04W72/042 ,  H04W72/044 ,  H04W74/004

    摘要： A packet transmission system (100) with reduced transmission delays includes a communications controller (110) and a plurality of remote requesting units (112) requesting packet transmission services. Each remote unit (112) sequentially stores transmitted access requests (302) in a memory queue (500) and awaits a resource grant (306) from the communications controller (110). Upon receipt of a granted resource the remote unit (112) will apply the granted resource to the oldest request (502) stored in the queue (500) in order to transmit data (310) to the communications controller (110). A separate and distinct aspect of the transmission system (100) resides within the communications controller (110). In response to the receipt of a data packet (310) from a remote unit (112), the communications controller (110) identifies missing data within the data packet transmission, determines whether communication resources are available to support retransmission of the missing data, and if so, transmits a response to the requesting remote unit identifying the missing data and simultaneously granting sufficient resources for retransmission of the missing data.

    Method and apparatus for producing a pulse width modulated signal
    8.
    发明公开
    Method and apparatus for producing a pulse width modulated signal 审中-公开
    用于产生脉冲宽度调制信号的方法和装置

    公开(公告)号：EP1050971A3

    公开(公告)日：2003-05-28

    申请号：EP00109473.9

    申请日：2000-05-04

    申请人： MOTOROLA, INC.

    发明人： Pascual, Cesar ,  Roeckner, William J.

    IPC分类号： H03M5/08

    CPC分类号： G11B20/10527 ,  H03M5/08

    摘要： A method and apparatus to produce a pulse width modulated (PWM) signal from pulse code modulated (PCM) data. In one embodiment, a crossing point of an analog signal with the ramp portion of a sawtooth waveform is approximated by first extrapolating, or projecting, a line between two adjacent sample points across other sample points to produce an estimate of the crossing point. A magnitude difference between a crossing point of the extrapolated line and a sample point magnitude on each side of the crossing point is determined. The magnitude difference, multiplied by an empirically determined constant, is added to the estimate. A PWM signal is then produced using the estimate for the crossing point.

    Fet with stable threshold voltage and method of manufacturing the same
    10.
    发明授权
    Fet with stable threshold voltage and method of manufacturing the same 失效
    具有稳定的阈值电压及其制造方法FET

    公开(公告)号：EP0752722B1

    公开(公告)日：2002-10-09

    申请号：EP96110587.1

    申请日：1996-07-01

    申请人： MOTOROLA, INC.

    发明人： Ilderem, Vida ,  Kaneshiro, Michael H. ,  Dow, Diann

    IPC分类号： H01L29/10 ,  H01L29/36 ,  H01L29/08 ,  H01L21/336

    CPC分类号： H01L29/0847 ,  H01L29/1045 ,  H01L29/665 ,  H01L29/6656 ,  H01L29/6659 ,  H01L29/66659

    摘要： A low voltage field effect transistor structure (20) is provided with a threshold voltage that is tolerant of process variations that alter the location of a source implant region (41). A first halo region (33) and a second halo region (36) are formed adjacent to source region (41) such that after subsequent thermal processing, a constant doping profile of opposite conductivity as source region (41) is formed in the channel region (23) adjacent the source region (41). The embodiments can be formed either adjacent to only the source region (41) to create a unilateral device, or the doping profile can be formed adjacent to both source region (41) and a drain region (40) to produce a bilateral device. An additional embodiment forms a second implant region in source region (41) to reduce junction leakage and capacitance.