Contact-sensing device, mobile information terminal, and capacitance calibration program and method
    1.
    发明授权
    Contact-sensing device, mobile information terminal, and capacitance calibration program and method 有权
    接触感应装置,移动信息终端以及电容校准程序和方法

    公开(公告)号:US08130212B2

    公开(公告)日:2012-03-06

    申请号:US12407372

    申请日:2009-03-19

    申请人: Tetsuo Umeda

    发明人: Tetsuo Umeda

    IPC分类号: G06F3/044

    CPC分类号: H03K17/962 H03K2217/94026

    摘要: A contact-sensing device includes a capacitance contact-sensing unit including contact-sensing areas configured to at least detect contact with an external object; a calibration-value setting unit configured to set a calibration value to be used to calibrate capacitances of the contact-sensing areas based on capacitances of the contact-sensing areas excluding the contact-sensing area detected by the contact-sensing unit; a calibration determining unit configured to determine whether calibration of the capacitances of the contact-sensing areas is to be carried out based on capacitances of the contact-sensing areas excluding the contact-sensing area detected by the contact-sensing unit; and a capacitance calibrating unit configured to calibrate capacitances of all of the contact-sensing areas using the calibration value set by the calibration-value setting unit when the calibration determining unit determines that calibration is to be carried out.

    摘要翻译: 接触感测装置包括电容接触感测单元,其包括被配置为至少检测与外部物体的接触的接触感应区域; 校准值设定单元,被配置为基于除了由接触感测单元检测到的接触感测区域之外的接触感应区域的电容来设定用于校准接触感测区域的电容的校准值; 校准确定单元,被配置为基于除了由所述接触感测单元检测到的接触感测区域之外的接触感应区域的电容来确定接触感测区域的电容的校准是否被执行; 以及电容校准单元,被配置为当校准确定单元确定要执行校准时,使用由校准值设置单元设置的校准值来校准所有接触感测区域的电容。

    Word recognition processing time reduction system using word length and
hash technique involving head letters
    2.
    发明授权
    Word recognition processing time reduction system using word length and hash technique involving head letters 失效
    字识别处理时间缩短系统使用字长和哈希技术涉及头文字

    公开(公告)号:US4771385A

    公开(公告)日:1988-09-13

    申请号:US799831

    申请日:1985-11-20

    摘要: A word recognization system compares an input word with words stored in a dictionary memory. The comparison is made on a basis of the number of letters in the input word in combination with the first few letters in the word. The first level of selection is made on a basis of the number of letters in the input word. The memory locations of words are chain linked on a basis of the letters at the head of the word so that a reading of one memory location automatically leads to the reading of another memory location responsive to a comparison of the first few letters.

    摘要翻译: 字识别系统将输入字与存储在字典存储器中的字进行比较。 基于输入字中的字母数量与单词中的前几个字母的组合进行比较。 第一级选择是根据输入单词中的字母数量进行的。 单词的记忆位置是基于单词头部的字母链接的,这样一来,读取一个记忆位置就可以自动导致另一个记忆位置的读取,以响应前几个字母的比较。

    Overlapped-transfer detecting apparatus for mail article
    3.
    发明授权
    Overlapped-transfer detecting apparatus for mail article 失效
    用于邮件的重叠传送检测装置

    公开(公告)号:US4733226A

    公开(公告)日:1988-03-22

    申请号:US1163

    申请日:1987-01-07

    摘要: A detector for use in a mail sorter is positioned along a path over which articles (letters, postcards, etc.) travel while in an upright position. A problem with such paths is that sometimes articles are overlapped, and sometimes small articles are hidden behind large articles. The invention detects such overlaps by (1) detecting height changes of any single article which trips a detector only once, and (2) forcibly displacing one article relative to the other of two overlapped articles. The change of length resulting from the forced displacement is detected.

    摘要翻译: 在邮件分拣机中使用的检测器沿着文章(信件,明信片等)在直立位置行进的路径定位。 这种路径的问题是有时文章重叠,有时小物品隐藏在大型文章之后。 本发明通过(1)检测仅检测一次检测器的任何单个制品的高度变化来检测这种重叠,以及(2)相对于两个重叠制品中的另一个强制移位一个物品。 检测到由强迫位移引起的长度变化。

    Character segmenting apparatus for optical character recognition
    6.
    发明授权
    Character segmenting apparatus for optical character recognition 失效
    用于光学字符识别的字符分割装置

    公开(公告)号:US4528692A

    公开(公告)日:1985-07-09

    申请号:US352633

    申请日:1982-02-26

    IPC分类号: G06K9/34 G06K9/36

    CPC分类号: G06K9/36 G06K9/34 G06K2209/01

    摘要: A character segmenting apparatus has an optical scanner for scanning the surface of an article of mail. The scan is in a direction which is substantially perpendicular to the direction of the relative movement between the optical scanner and the mail article. The scan generates a pattern signal which is then recurrsively compressed and updated in the width of a black picture element contained in the pattern signal. A character segmenting signal is produced when no black picture element exists in a portion of the pattern signal, delivered from the optical scanner, which corresponds to the black picture element contained in the compressed pattern signal. Size and position information of a whole segmented character is developed in response to the character segmenting signal.

    摘要翻译: 字符分割装置具有用于扫描邮件物品的表面的光学扫描器。 扫描方向基本上垂直于光学扫描器和邮件之间的相对运动的方向。 该扫描产生一个图形信号,该图形信号然后以包含在图形信号中的黑色图像元素的宽度进行递归压缩和更新。 当从与光学扫描器传送的图形信号的一部分中不存在与包含在压缩图案信号中的黑色图像元素对应的黑色像素时,产生字符分割信号。 响应于字符分割信号来开发整个分段字符的大小和位置信息。

    Binary pattern signal producing apparatus for optical character
recognition
    7.
    发明授权
    Binary pattern signal producing apparatus for optical character recognition 失效
    用于光学字符识别的二进制码型信号产生装置

    公开(公告)号:US4475234A

    公开(公告)日:1984-10-02

    申请号:US345905

    申请日:1982-02-04

    IPC分类号: G06K9/60 G06K9/00

    CPC分类号: G06K9/60

    摘要: A binary pattern signal producing apparatus for optical character recognition comprises a pre-scanning section for determining an area containing the information to be scanned, a scanning apparatus for producing a signal in accordance with the luminance of the scanning area, an automatic gain control circuit for controlling the level of the information signal in accordance with the level of a portion of the same information signal representing less than the entire scanned area, and a comparison circuit responsive to the output of the automatic gain control circuit for generating the binary pattern signal. In addition to or in place of a gate circuit which is used to provide only a portion of the information signal to the gain control terminal of the automatic gain control device, the apparatus may include noise eliminating circuitry for removing pulsive noise from the gain control signal.

    摘要翻译: 用于光学字符识别的二进制图形信号产生装置包括用于确定包含要扫描的信息的区域的预扫描部分,用于根据扫描区域的亮度产生信号的扫描装置,用于产生扫描区域的亮度的自动增益控制电路 根据表示小于整个扫描区域的相同信息信号的一部分的电平控制信息信号的电平;以及响应于自动增益控制电路的输出产生二进制图形信号的比较电路。 除了用于仅向信号信号的一部分提供给自动增益控制装置的增益控制端的门电路之外,还可以包括用于从增益控制信号去除脉冲噪声的噪声消除电路 。

    Discriminator between handwritten and machine-printed characters
    8.
    发明授权
    Discriminator between handwritten and machine-printed characters 失效
    手写和机器打印字符之间的鉴别

    公开(公告)号:US4910787A

    公开(公告)日:1990-03-20

    申请号:US182518

    申请日:1988-04-18

    IPC分类号: G06K9/20 G06K9/68

    CPC分类号: G06K9/6835 G06K9/6807

    摘要: A video image of a region including characters recorded on a document is converted into electric signals. From the electric signals unit signals corresponding to subregions obtained by dividing the region is picked up. Horizontal, vertical and slanted stroke components included in each of the subregions are detected from the unit signals. The detected numbers of the horizontal, vertical and slanted stroke components are counted. The ratio of the counted numbers of the slanted stroke component to the total of the horizontal, vertical and slanted stroke components is calculated. The characters on the document is judged as handwritten ones and machine-printed ones if the ratio is above and not above a predetermined threshold, respectively. The threshold is preferably set at 0.2.

    Binary signal producing apparatus for optical character recognition
    9.
    发明授权
    Binary signal producing apparatus for optical character recognition 失效
    用于光学字符识别的二进制信号产生装置

    公开(公告)号:US4831658A

    公开(公告)日:1989-05-16

    申请号:US119663

    申请日:1987-11-12

    IPC分类号: G06K9/36 G06K9/38

    CPC分类号: G06K9/38 G06K2209/01

    摘要: An optical character reader distinguishes between black and white image signals by comparing a center reader with readings from surrounding areas. Variations on the surface of a paper bearing the image can add or subtract values so that the comparison may be in error. The invention overcomes the problem by using logic circuits to add, subtract and compare signals out of a mask in order to improve the accuracy of the comparison between the center reading and the readings from the surrounding areas.

    摘要翻译: 光学字符读取器通过将中心读取器与周围区域的读数进行比较来区分黑白图像信号。 承载图像的纸张的表面上的变化可以增加或减少值,使得比较可能是错误的。 本发明通过使用逻辑电路来增加,减去和比较掩模中的信号来克服该问题,以便提高中心读数与周围区域的读数之间的比较的准确性。

    Binary character signal producing apparatus
    10.
    发明授权
    Binary character signal producing apparatus 失效
    二进制字符信号产生装置

    公开(公告)号:US4675909A

    公开(公告)日:1987-06-23

    申请号:US699811

    申请日:1985-02-08

    IPC分类号: G06K9/38 H04N1/403

    CPC分类号: G06K9/38 G06K2209/01

    摘要: A character recognition circuit slices the character signal received from an optical scanner and counts a number of black bits at multiple levels. The number of black bits are normalized in accordance with the character row length. A pair of level judging circuits responds to the normalized black bits at the respective multiple levels to derive slicing levels for both the character and the background. Responsive thereto a binary signal is produced in accordance with the slice level. Thus, the differences in the background signals do not have an effect upon the recognization of the character signals.

    摘要翻译: 字符识别电路对从光学扫描仪接收到的字符信号进行切片,并对多个黑色位进行计数。 根据字符行长度对黑色位数进行归一化。 一对电平判断电路在相应的多个电平上对归一化的黑色位进行响应,以获得字符和背景的限幅电平。 根据切片级别产生对二进制信号的响应。 因此,背景信号的差异对字符信号的识别没有影响。