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    • 4. 发明授权
    • Optical sensor for distance measurement
    • 用于距离测量的光学传感器
    • US06876441B2
    • 2005-04-05
    • US10156126
    • 2002-05-29
    • Andrew J. Barker
    • Andrew J. Barker
    • G01C3/06G01S7/481G01S7/491G01S7/493G01S17/36G01C3/08
    • G01S7/4812G01S7/4915G01S7/493G01S17/36
    • Apparatus and method are provided for distance measurement to a remote surface using high frequency modulated transmitted and reflected laser beams and phase-shift calculations. To improve phase-shift resolution, the reflected bean is further modulated, before detection, at a high frequency similar yet different from that of the transmitted beam so as create a resulting detector signal having at least a lower frequency signal which is easily detected by a response limited detector. The lower frequency signal retains the phase-shift information and thus enables determination of the phase-shift information with stable, inexpensive low-frequency optical detectors. Three-dimensional mapping can performed wherein one or more apparatus employ a plurality of detectors or a scanner producing a plurality of sequential reflected beams, each of which results in a plurality of phase-shift information for an area on the surface.
    • 提供了使用高频调制的发射和反射激光束和相移计算对远程表面的距离测量的装置和方法。 为了提高相移分辨率,反射的豆在检测之前被进一步调制,其频率与发射波束的高频相似但不同,从而产生具有至少较低频率信号的结果检测器信号,该信号易于被 响应限制检测器。 低频信号保持相移信息,从而能够利用稳定,廉价的低频光检测器来确定相移信息。 可以执行三维映射,其中一个或多个装置采用多个检测器或产生多个顺序反射光束的扫描器,每个反射光束导致表面上的区域的多个相移信息。
    • 5. 发明授权
    • Tricyclic derivatives
    • 三环衍生物
    • US5569658A
    • 1996-10-29
    • US275754
    • 1994-07-19
    • Andrew J. Barker
    • Andrew J. Barker
    • A61K31/505A61P35/00A61P43/00C07D471/04C07D487/04C07D498/04C07D513/04C07D237/26A61K31/495C07D239/70
    • C07D487/04
    • The invention concerns tricyclic derivatives of the formula I ##STR1## wherein R.sup.1 and R.sup.2 together form an optionally substituted group of the formula --N.dbd.CH--NH--, --N.dbd.CH--O--, --N.dbd.CH--S--, --N.dbd.N--NH--, --NH--N.dbd.CH--, --NH--CH.dbd.CH--. --NH--CO--NH--, --NH--CO--O--, --NH--CO--S--, --NH--NH--CO--, --N.dbd.CH--CH.dbd.N--, --N.dbd.N--CH.dbd.CH--, --N.dbd.CH--N.dbd.CH--, --N.dbd.CH--CH.dbd.N--, --NH--CO--CH.dbd.CH-- or --N.dbd.CH--CO--NH--; m is 1, 2 or 3 and R.sup.3 includes hydrogen, halogeno and (1-4C)alkyl; or a pharmaceutically-acceptable salt thereof;processes for their preparation; pharmaceutical compositions containing them; and the use of the receptor tyrosine kinase inhibitory properties of the compounds. in the treatment of cancer.
    • 本发明涉及式I的三环衍生物,其中R 1和R 2一起形成式-N = CH-NH-,-N = CH-O-,-N = CH-S-, -N = N-NH-,-NH-N = CH-,-NH-CH = CH-。 -NH-CO-NH-,-NH-CO-O-,-NH-CO-S-,-NH-NH-CO-,-N = CH-CH = N-,-N = N-CH = CH - ,-N = CH-N = CH-,-N = CH-CH = N-,-NH-CO-CH = CH-或-N = CH-CO-NH-; m是1,2或3,R 3包括氢,卤素和(1-4C)烷基; 或其药学上可接受的盐; 其准备过程; 含有它们的药物组合物; 并使用受体酪氨酸激酶抑制化合物的性质。 在治疗癌症。
    • 8. 发明授权
    • Optical test apparatus for examining an object
    • 用于检查物体的光学测试装置
    • US4455086A
    • 1984-06-19
    • US347132
    • 1982-02-09
    • Robert N. WestAndrew J. Barker
    • Robert N. WestAndrew J. Barker
    • G01N21/89G01N21/00
    • G01N21/8901
    • Test apparatus and method for testing for faults in, for example, transparent sheet material in which two parallel beams of light separated by a distance "w" are passed through a grating having, for example, light transmitting and absorbing areas separated by a distance "w", so that as the two beams are scanned across the object and the grating the light output through the grating is generally constant. If, however, there are faults which displace one beam with respect to the other, then the spacing between the beams will change so the light output will vary from the norm. Furthermore, if there is a fault which would cause attenuation of the two beams, then the light output will again vary from the norm.
    • 用于测试例如透明片材的测试装置和方法,其中将两个平行光束分开一段距离“w”的光束通过光栅,该光栅具有例如隔开距离“ w“,使得当两个光束跨过物体和光栅扫描时,通过光栅输出的光通常是恒定的。 然而,如果存在相对于另一个移动一个光束的故障,则光束之间的间隔将改变,使得光输出将随规范变化。 此外,如果存在将导致两个光束衰减的故障,则光输出将再次从标准变化。
    • 9. 发明授权
    • Communications receiver arrangement
    • 通信接收机布置
    • US06513136B1
    • 2003-01-28
    • US09432317
    • 1999-11-02
    • Andrew J. Barker
    • Andrew J. Barker
    • G06F1100
    • H04L25/063H04L1/0045H04L1/0057
    • A receiver in a digital communications system, in which the digital data occupy a number of levels, equalises the erroneous-count rates for the various data levels by deriving the count rates for the levels, comparing these count rates with each other and using the comparison result to adjust the threshold level which is used to detect the received data train. The error-counts are preferably derived as a byproduct of a Forward Error Correction system already available for performing normal error correction on the received data. The receiver arrangement is envisaged to find predominant application in a two-level system involving logical “1”'s and “0”'s, though it is applicable also to systems with three or more levels.
    • 在数字通信系统中的数字数据占用多个级别的接收机,通过导出电平的计数率,将这些计数率相互比较并使用比较来均衡各种数据电平的错误计数率 结果调整用于检测接收到的数据序列的阈值水平。 错误计数优选地被导出为已经可用于对所接收的数据执行正常纠错的前向纠错系统的副产品。 接收机布置被设想在涉及逻辑“1”和“0”的两级系统中找到主要应用,尽管它也适用于具有三个或更多个级别的系统。