Capacitance detecting circuit and method, and fingerprint sensor using the same
    1.
    发明授权
    Capacitance detecting circuit and method, and fingerprint sensor using the same 有权
    电容检测电路及方法,以及采用相同的指纹传感器

    公开(公告)号:US07084645B1

    公开(公告)日:2006-08-01

    申请号:US10986499

    申请日:2004-11-10

    IPC分类号: G01R27/26

    摘要: A capacitance detecting circuit includes a code generator for generating code having orthogonality in chronological order. A column-line driver drives the plurality of column lines based on the code by dividing the column lines into a first column line group and a second column line group. A capacitance detector, which is connected to the row line, converts the total of currents generated in capacitances at the intersections with the driven column lines into a voltage signal and outputs the converted voltage signal. A decoding computation unit determines the voltages corresponding to the capacitances at the intersections for each of the column line groups by performing product sum computation between the measured voltages and the code. The column-line driver drives the first column line group and the second column line group by complementary voltages according to the code or information indicating the inversion of the code.

    摘要翻译: 电容检测电路包括用于按时间顺序生成具有正交性的代码的代码发生器。 列线驱动器通过将列线划分成第一列线组和第二列线组,基于代码来驱动多条列线。 连接到行线的电容检测器将与驱动列线交叉处的电容中产生的电流的总和转换为电压信号,并输出转换的电压信号。 解码计算单元通过在测量的电压和代码之间进行乘积和计算来确定与每个列线组的交点处的电容相对应的电压。 列线驱动器根据指示代码反转的代码或信息通过互补电压驱动第一列线组和第二列线组。

    capacitance detector, method of detecting capacitance, and fingerprint sensor
    2.
    发明申请
    capacitance detector, method of detecting capacitance, and fingerprint sensor 审中-公开
    电容检测器,电容检测方法和指纹传感器

    公开(公告)号:US20050024065A1

    公开(公告)日:2005-02-03

    申请号:US10895796

    申请日:2004-07-20

    CPC分类号: G01D5/2417 G06K9/0002

    摘要: A capacitance detector, used in an area sensor having a matrix of detection lines, detects minute capacitances near intersections of a plurality of column lines and a plurality of row lines. The capacitance detector includes a column-line driver for outputting to the column lines a signal that rises in response to a first voltage and then falls in response to a second voltage; a row-voltage outputter for outputting a third voltage corresponding to a current for charging the capacitance at each of the intersections when the column lines are driven by the first voltage and for outputting a fourth voltage corresponding to a current for discharging the capacitance at each of the intersections when the column lines are driven by the second voltage; and a calculator for calculating the difference between the third voltage and the fourth voltage. The difference is calculated at each of the intersections.

    摘要翻译: 在具有检测线矩阵的区域传感器中使用的电容检测器检测多条列线和多条行线的交点附近的微小电容。 电容检测器包括列线驱动器,用于向列线输出响应于第一电压而上升然后响应于第二电压而下降的信号; 行电压输出器,用于当列线被第一电压驱动时,输出与用于对每个交点处的电容进行充电的电流相对应的第三电压,并输出对应于用于在每个交点处的电容放电的电流的第四电压 当列线被第二电压驱动时的交点; 以及用于计算第三电压和第四电压之间的差的计算器。 在每个交叉点计算差额。

    Remote coordinate designating device
    3.
    发明授权
    Remote coordinate designating device 失效
    遥控坐标指定装置

    公开(公告)号:US5949403A

    公开(公告)日:1999-09-07

    申请号:US565659

    申请日:1995-11-29

    摘要: A remote coordinate designating device has a remote control with a light emitting device for emitting light, and a controller for detecting a designated position by receiving light from the remote control at a distance from the remote control. One cycle of a light signal from the light emitting device is composed of switch data and a coordinate detection timing header at the head, and a coordinate detection carrier. The switch data and the coordinate detection timing header use the same frequency as the normal remote control frequency band, and the frequency of the coordinate detection carrier is lower than the frequency of the switch data and the coordinate detection timing header. The switch data contains on-off information about a switch for pointing, and coordinate detection is started when a predetermined time has passed from the rise of a burst portion in the switch data.

    摘要翻译: 远程坐标指定装置具有带有用于发光的发光装置的遥控器,以及用于通过从遥控器远离遥控器的光接收来检测指定位置的控制器。 来自发光装置的光信号的一个周期由头部的开关数据和坐标检测定时头部以及坐标检测载体构成。 开关数据和坐标检测定时标头使用与正常遥控频带相同的频率,坐标检测载体的频率低于开关数据和坐标检测定时标头的频率。 开关数据包含关于用于指向的开关的开 - 关信息,并且当从开关数据中的突发部分的上升经过预定时间时开始坐标检测。

    Capacitance detecting circuit and method, and fingerprint sensor using the same
    4.
    发明申请
    Capacitance detecting circuit and method, and fingerprint sensor using the same 有权
    电容检测电路及方法,以及采用相同的指纹传感器

    公开(公告)号:US20050141263A1

    公开(公告)日:2005-06-30

    申请号:US10986505

    申请日:2004-11-10

    摘要: In a capacitance detecting circuit, changes in capacitances at intersections between a plurality of row lines and a column line are detected as voltages. The capacitance detecting circuit includes a column-line driver for driving the column line. A code generator generates code having orthogonality in chronological order. A selection synthesizer selects a certain number of row lines from the plurality of row lines by using the code and synthesizes measured voltages at the intersections between the selected row lines and the driven column line so as to output the synthesized measured voltage. A decoding computation unit separates the measured voltages corresponding to the capacitances at the intersections by performing product sum computation between the synthesized measured voltage and the code.

    摘要翻译: 在电容检测电路中,检测多条行线与列线之间的交叉点的电容变化为电压。 电容检测电路包括用于驱动列线的列线驱动器。 代码生成器按时间顺序生成具有正交性的代码。 选择合成器通过使用代码从多条行线中选择一定数量的行线,并且合成所选择的行线和被驱动列线之间的交点处的测量电压,以便输出合成的测量电压。 解码计算单元通过在合成测量电压和代码之间执行乘积和计算来分离对应于交点处的电容的测量电压。

    Light-emitting diode device with reduced scatter
    6.
    发明授权
    Light-emitting diode device with reduced scatter 失效
    具有降低散射的发光二极管器件

    公开(公告)号:US5841154A

    公开(公告)日:1998-11-24

    申请号:US731376

    申请日:1996-10-10

    IPC分类号: G02B5/02 H01L33/54 H01L33/00

    CPC分类号: H01L33/58 H01L33/44

    摘要: A light-emitting diode device includes a light-emitting diode, a lens cap made of synthetic resin, for covering the light-emitting surface of the light-emitting diode means, and a refractive layer formed between the light-emitting surface and the lens cap, the refractive layer having a composition, such as an air layer, with a refractive index different from the refractive index of said synthetic resin. In this arrangement the relationship between the light intensity and directional angles is shown by characteristics in which the light intensity is maximum in the center of the directional angles, and is relatively flat in the form of a sinusoid in the wide range of the directional angles. Therefore, even when the characteristics of each light-emitting diode is not verified, a predetermined light-signal transmission range is readily obtained without being affected by a scatter in the characteristics.

    摘要翻译: 发光二极管装置包括发光二极管,由合成树脂制成的透镜盖,用于覆盖发光二极管装置的发光表面,以及形成在发光表面和透镜之间的折射层 盖,具有折射率不同于所述合成树脂的折射率的组成的折射层,例如空气层。 在这种布置中,光强度和方向角之间的关系由方向角的中心处的光强度最大的特性表示,并且在方向角的宽范围内以正弦曲线的形式相对平坦。 因此,即使没有验证各发光二极管的特性,也容易得到预定的光信号传输范围,而不受特性的散射的影响。

    Capacitive sensor
    7.
    发明申请
    Capacitive sensor 审中-公开
    电容传感器

    公开(公告)号:US20050005703A1

    公开(公告)日:2005-01-13

    申请号:US10875251

    申请日:2004-06-23

    摘要: A pressure-sensitive capacitive sensor includes a sensing unit in which a plurality of column wires and a plurality of row wires are formed in a matrix, a detecting signal generator, and filters. Capacitances at intersections between the column wires and the row wires change in accordance with externally applied pressure. The detecting signal generator sequentially outputs pulse signals of a predetermined frequency to the column wires of the sensing unit. The filters are connected to the respective row wires of the sensing unit and extract amplitudes of signals of the predetermined frequency. The amplitude is proportional to the capacitance at the intersection.

    摘要翻译: 压敏电容式传感器包括一个感测单元,其中多个列线和多条行布线形成矩阵,检测信号发生器和滤波器。 列线和列线之间的交叉点的电容根据外部施加的压力而变化。 检测信号发生器顺序地将预定频率的脉冲信号输出到感测单元的列线。 滤波器连接到感测单元的相应行导线并提取预定频率信号的振幅。 振幅与交点处的电容成比例。

    Relative angle detecting device
    8.
    发明授权
    Relative angle detecting device 失效
    相对角度检测装置

    公开(公告)号:US6028592A

    公开(公告)日:2000-02-22

    申请号:US498862

    申请日:1995-07-06

    摘要: In a relative angle detecting device, plural received light outputs are subjected to time division. Received light detection voltage is shifted by a phase shifter and sampling pulse is formed, and peak detecting means holds peak value of received light output based on the sampling pulse. In a CPU, peak value of each voltage is stored in a memory, and the stored value is operated thereby information regarding relative position between a light source and a light reception element is operated. Utilizing the time division, each received light detection voltage can be processed in the same condition, and the peak value of each received light output can be detected with high precision.

    摘要翻译: 在相对角度检测装置中,对多个接收光输出进行时分。 接收光检测电压被移相器移位并形成采样脉冲,峰值检测装置根据取样脉冲保持接收光输出的峰值。 在CPU中,每个电压的峰值被存储在存储器中,并且由此操作存储的值,从而操作关于光源和光接收元件之间的相对位置的信息。 利用时分,可以在相同的条件下处理每个接收的光检测电压,并且可以高精度地检测每个接收的光输出的峰值。

    Apparatus for inclination detection and input apparatus using this
apparatus
    9.
    发明授权
    Apparatus for inclination detection and input apparatus using this apparatus 失效
    使用该装置的反转位和输入装置的倾斜检测装置

    公开(公告)号:US5963194A

    公开(公告)日:1999-10-05

    申请号:US717445

    申请日:1996-09-20

    摘要: An apparatus is disclosed for inclination detection wherein infrared transmitted signal, signal groups S1, S2, S3, . . . including a leader code, a parity bit and bits for data transfer are sequentially transmitted with an interval time t3. At each bit of the signal group S1, "1" and "0" of a binary signal expressing the data are not inverted, at the signal group S2, "1"and "0" expressing the data are inverted, and inversion and non-inversion are repeated every signal group. At bits of each signal group, since a time length expresses "1" and "0", a total time length of each signal group is different from that of other signal group. By repeating sets of inverted and non-inverted signal groups, the time length of each set is averaged, and hence, data processing can be made more efficient.

    摘要翻译: 公开了一种用于倾斜检测的装置,其中红外发射信号,信号组S1,S2,S3,...。 。 。 包括引导码,奇偶校验位和用于数据传送的位以间隔时间t3顺序发送。 在信号组S1的每一位,表示数据的二进制信号的“1”和“0”不反转,在信号组S2处,表示数据的“1”和“0”被反转,并且反相和非反相 每个信号组重复反转。 在每个信号组的位,由于时间长度表示“1”和“0”,每个信号组的总时间长度与其他信号组的总时间长度不同。 通过重复反相和非反相信号组的集合,对每组的时间长度进行平均,从而可以使数据处理更有效率。

    Relative-angle detection apparatus
    10.
    发明授权
    Relative-angle detection apparatus 失效
    相对角度检测装置

    公开(公告)号:US5835209A

    公开(公告)日:1998-11-10

    申请号:US720832

    申请日:1996-10-03

    CPC分类号: G01S3/782 G01S5/163

    摘要: A relative-angle detection apparatus which has an infrared-signal transmitting unit and an infrared-signal receiving unit. The transmitting unit includes a first light-emitting device array formed of a plurality of light-emitting devices disposed in a direction substantially coinciding with the fiducial axis for angle detection, and a second light-emitting device array formed of a plurality of light-emitting devices located to be slightly angled in the different directions with respect to the axis. The devices of the first light-emitting device array generate a continously-output first infrared signal in which an infrared signal is intermittently modulated by a first frequency and also modulated by a second frequency higher than the first frequency. The devices of the second light-emitting device array generate a second infrared signal in which an infrared signal is modulated by the first frequency and also divided into a plurality of signals so as to be output at different timings. The receiving unit detects and amplifies the first frequency contained in the first and second infrared signals and executes signal-processing on the amplified first frequency, thereby detecting the angle of the transmitting unit relative to the receiving unit.

    摘要翻译: 一种相对角度检测装置,其具有红外线信号发送部和红外线信号接收部。 发送单元包括:第一发光装置阵列,其由与基准重合的用于角度检测的基准线的多个发光装置构成;以及第二发光装置阵列,其由多个发光 位于相对于轴线在不同方向上稍微倾斜的装置。 第一发光装置阵列的装置产生连续输出的第一红外信号,其中红外信号被第一频率间歇地调制,并且还被比第一频率高的第二频率进行调制。 第二发光装置阵列的装置产生第二红外信号,其中红外信号被第一频率调制,并且还被分成多个信号,以便以不同的定时输出。 接收单元检测并放大第一和第二红外信号中包含的第一频率,并对放大的第一频率执行信号处理,从而检测发送单元相对于接收单元的角度。