公开(公告)号：JPH1028091A

公开(公告)日：1998-01-27

申请号：JP35759896

申请日：1996-12-26

Applicant: MOTOROLA INC

Inventor： SUNDSTROM RAY D ,  SCHWARTZ DANIEL B ,  CHUN CHRISTOPHER K Y ,  SHOOK STEPHEN G

IPC: H03M5/04 ,  H04B10/02 ,  H04B10/12 ,  H04B10/18 ,  H04L7/00 ,  H04L25/06 ,  H04L25/49

Abstract: PROBLEM TO BE SOLVED: To provide a data transmitting circuit which can prevent the occurrence of a data error when a logical state continues. SOLUTION: A data transmitter 12 transmits parallel data as an optical pulse through an optical channel 14. A data receiver 16 reconverts the optical pulse into a voltage level and compares the voltage level with a reference capacitor voltage. The capacitor voltage must be maintained within an intermediate range for keeping an appropriate noise margin at the time of detecting a logical value. When the same logical state continuous in a row, a data error occurs because the voltage of a capacitor is charged or discharged to a value nearly equal to that of the voltage of the data. In order to prevent the data error, the long continuous row of the same logical state is divided into sections by encoding the data through bit inversion. The encoded information is transmitted to the receiver 16 separately from the data as a transmission clock. An appropriate logical state is restored by fetching the decoded information and converting the encoded data.

公开(公告)号：GB2408398A

公开(公告)日：2005-05-25

申请号：GB0326861

申请日：2003-11-18

Applicant: MOTOROLA INC

Inventor： PRATT PATRICK J ,  MILYARD MICHAEL A ,  NIGRA LOUIS M ,  SCHWARTZ DANIEL B

IPC: H03C3/09 ,  H03L7/00 ,  H03L7/099 ,  H03L7/18

Abstract: A calibration device for a phase locked loop arranged to generate an output frequency based upon a first frequency range of an input signal applied to a first input and a second frequency range of the input signal applied to a second input, the calibration phase locked loop synthesizer device comprising an estimator arranged to use a two dimensional estimation algorithm with a signal value indicative of a mismatch between the first input path and the second input path to determine an estimate of the mismatch to allow matching of the first input path and the second input path.

公开(公告)号：AU2003295399A1

公开(公告)日：2004-06-07

申请号：AU2003295399

申请日：2003-10-31

Applicant: MOTOROLA INC

Inventor： TRAYLOR KEVIN ,  BLACK GREGORY ,  SCHWARTZ DANIEL B

IPC: H01Q3/26 ,  H01Q11/12 ,  H03C3/09 ,  H03L20060101 ,  H03L7/197 ,  H04B1/04 ,  H04B1/06 ,  H04B1/18 ,  H04B7/00

Abstract: Voltage controlled oscillator (VCO) gain tracking is used for programming modulation gain settings to minimize modulation distortion in a phase locked loop of a mobile station (10). A synthesizer (20) generates a tuning voltage (Vt) for controlling a frequency of a (VCO) modulated radio frequency signal. A controller (22) outputs a modulation data signal and includes an ADC (72) for receiving the tuning voltage from the synthesizer (20) on a VCO feedback loop (70), a gain control lookup table (LUT) (76) for storing gain setting calibration data for respective mobile station sub-bands, and a gain setting (DAC) (78) for outputting a modulation gain control signal to the synthesizer (20). The modulation gain setting calibration data is calibrated using a one-time or continuous calibration methodlogy during, respectively, a background or normal mode of operation.

公开(公告)号：DE69624211T2

公开(公告)日：2003-02-13

申请号：DE69624211

申请日：1996-12-12

Applicant: MOTOROLA INC

Inventor： SHOOK STEPHEN G ,  CHUN CHRISTOPHER ,  SCHWARTZ DANIEL B

IPC: H04B10/158 ,  H04L25/06 ,  H03K5/08 ,  H04B10/06 ,  H04B1/06

Abstract: A signal processing circuit (10) performs a sample and hold (16) of an input signal (14) and stores a maximum value of the input signal (18). A guardband signal (21) is developed that is less than the maximum value that is stored. The input signal is compared to the guardband signal to determine if the input signal is above or below the guardband signal. A threshold signal (25) is developed by taking a percentage of the maximum value that is stored. The input signal is compared to the threshold signal to regenerate the input waveform. If the input signal is below the guardband signal and above the threshold signal, the sample and hold circuit is reset to acquire a new maximum value of the input signal so that a new threshold can be used for regenerating the input signal.

公开(公告)号：GB2408398B

公开(公告)日：2005-11-23

申请号：GB0326861

申请日：2003-11-18

Applicant: MOTOROLA INC

Inventor： PRATT PATRICK J ,  MILYARD MICHAEL A ,  NIGRA LOUIS M ,  SCHWARTZ DANIEL B

IPC: H03C3/09 ,  H03L7/00 ,  H03L7/099 ,  H03L7/18

公开(公告)号：AU2003295399A8

公开(公告)日：2004-06-07

申请号：AU2003295399

申请日：2003-10-31

Applicant: MOTOROLA INC

Inventor： TRAYLOR KEVIN ,  SCHWARTZ DANIEL B ,  BLACK GREGORY

IPC: H01Q3/26 ,  H01Q11/12 ,  H03C3/09 ,  H03L20060101 ,  H03L7/197 ,  H04B1/04 ,  H04B1/06 ,  H04B1/18 ,  H04B7/00

Abstract: Voltage controlled oscillator (VCO) gain tracking is used for programming modulation gain settings to minimize modulation distortion in a phase locked loop of a mobile station (10). A synthesizer (20) generates a tuning voltage (Vt) for controlling a frequency of a (VCO) modulated radio frequency signal. A controller (22) outputs a modulation data signal and includes an ADC (72) for receiving the tuning voltage from the synthesizer (20) on a VCO feedback loop (70), a gain control lookup table (LUT) (76) for storing gain setting calibration data for respective mobile station sub-bands, and a gain setting (DAC) (78) for outputting a modulation gain control signal to the synthesizer (20). The modulation gain setting calibration data is calibrated using a one-time or continuous calibration methodlogy during, respectively, a background or normal mode of operation.

公开(公告)号：GB2407929A

公开(公告)日：2005-05-11

申请号：GB0325852

申请日：2003-11-05

Applicant: MOTOROLA INC ,  FREESCALE SEMICONDUCTOR INC

Inventor： O'SULLIVAN ROBERT ,  PRATT PATRICK J ,  SCHWARTZ DANIEL B ,  TRAUDT MATTHEW D ,  O'BRIEN MICHAEL W

IPC: H03F1/32

Abstract: An amplitude predistorter for an EDGE polar RF transmitter comprises a look-up table 205 containing a small set of input-output values defining a piecewise linear model of the amplitude response of the amplifier (105, figure 1). The two input-output value pairs defining the segment in which the input amplitude lies are fed from the LUT 205 to a linear interpolator 204. A phase correction look-up table may be provided also (figure 4). The precorrection unit 201 provides scaling and offset to match the input signal range to the available amplifier output range. The contents of the look-up tables may be determined relatively promptly and without iteration during a training mode, using a low-bandwidth Cartesian receiver (106, figure 1). The LUT 205 may contain a bitmap denoting whether each segment end point is above or below the input to the LUT. The priority encoder 203 operates on the bitmap output to select a segment.

公开(公告)号：DE69624211D1

公开(公告)日：2002-11-14

申请号：DE69624211

申请日：1996-12-12

Applicant: MOTOROLA INC

Inventor： SHOOK STEPHEN G ,  CHUN CHRISTOPHER ,  SCHWARTZ DANIEL B

IPC: H04B10/158 ,  H04L25/06 ,  H03K5/08 ,  H04B10/06 ,  H04B1/06

Abstract: A signal processing circuit (10) performs a sample and hold (16) of an input signal (14) and stores a maximum value of the input signal (18). A guardband signal (21) is developed that is less than the maximum value that is stored. The input signal is compared to the guardband signal to determine if the input signal is above or below the guardband signal. A threshold signal (25) is developed by taking a percentage of the maximum value that is stored. The input signal is compared to the threshold signal to regenerate the input waveform. If the input signal is below the guardband signal and above the threshold signal, the sample and hold circuit is reset to acquire a new maximum value of the input signal so that a new threshold can be used for regenerating the input signal.

公开(公告)号：CA2192902A1

公开(公告)日：1997-09-29

申请号：CA2192902

申请日：1996-12-13

Applicant: MOTOROLA INC

Inventor： RASKIN GLENN D ,  SCHWARTZ DANIEL B

IPC: G02B6/42 ,  H01L27/15

Abstract: An optoelectric interconnect (70) includes an optical fiber (17) coupled to a ferrule (11) and an optoelectric board (20). A metal layer (14) is disposed over a surface (12) of the ferrule (11). An optoelectric device (61) is coupled to the optoelectric board (20) using tape automated bonding tapes (47, 51). The optoelectric board (20) and the ferrule (11) are positioned adjacent each other so that optical radiation is transmitted from the optoelectric device (61) to the optical fiber (17). The position of the optoelectric device (61) is adjusted to achieve an optimum position which is characterized by a maximum optical radiation transmitted to the optical fiber (17). Upon achieving the optimum position, two bonding strips (54, 56) are fused with the metal layer (14) on the surface (12) of the ferrule (11).

公开(公告)号：WO2004042924A2

公开(公告)日：2004-05-21

申请号：PCT/US0335172

申请日：2003-10-31

Applicant: MOTOROLA INC

Inventor： BLACK GREGORY ,  SCHWARTZ DANIEL B ,  TRAYLOR KEVIN

IPC: H01Q3/26 ,  H01Q11/12 ,  H03C3/09 ,  H03L20060101 ,  H03L7/197 ,  H04B1/04 ,  H04B1/06 ,  H04B1/18 ,  H04B7/00 ,  H03L

CPC classification number: H01Q3/267 ,  H03C3/0925 ,  H03C3/0941 ,  H03C3/0975 ,  H03L7/1974

Abstract: Voltage controlled oscillator (VCO) gain tracking is used for programming modulation gain settings to minimize modulation distortion in a low bandwidth phase locked loop of a mobile station (10). A synthesizer (20) generates a tuning voltage (Vt) for controlling a frequency of a voltage controlled oscillator (VCO) modulated radio frequency signal. A controller (22) outputs a modulation data signal and includes an analog to digital converter (72) for receiving the tuning voltage from the synthesizer (20) on a VCO feedback loop (70), a gain control lookup table (LUT) (76) for storing modulation gain setting calibration data for respective mobile station sub-bands, and a gain setting digital to analog converter (DAC) (78) for outputting a modulation gain control signal to the synthesizer (20). The modulation gain setting calibration data is calibrated using a one-time or continuous calibration methodology during, respectively, a background or normal mode of mobile station operation.

Abstract translation: 压控振荡器（VCO）增益跟踪用于编程调制增益设置，以最小化移动台（10）的低带宽锁相环中的调制失真。 合成器（20）产生用于控制压控振荡器（VCO）调制的射频信号的频率的调谐电压（Vt）。 控制器（22）输出调制数据信号，并且包括用于在VCO反馈环路（70）上接收来自合成器（20）的调谐电压的模数转换器（72），增益控制查找表（LUT） ），用于存储各个移动台子带的调制增益设置校准数据，以及增益设置数模转换器（DAC）（78），用于向合成器（20）输出调制增益控制信号。 调制增益设置校准数据分别在移动台操作的背景或正常模式期间使用一次或连续校准方法进行校准。