Apparatus and method for reading two-dimensional symbols
    61.
    发明授权
    Apparatus and method for reading two-dimensional symbols 失效
    用于读取二维符号的装置和方法

    公开(公告)号:US5654533A

    公开(公告)日:1997-08-05

    申请号:US503230

    申请日:1995-07-17

    IPC分类号: G06K7/10

    摘要: An optical reading apparatus for reading a two-dimensional symbol includes a housing having an opening portion for confronting the symbol, a gripping portion, and a serial I/F for transmitting a two-dimensional code data corresponding to the two-dimensional symbol to an external apparatus. LEDs mounted near the opening portion generate light to illuminate the two-dimensional symbol. A mirror reflects light reflected from the two-dimensional symbol toward the gripping portion. An automatic diaphragm mechanism regulates the light from the mirror. A two-dimensional type CCD generates electrical signals corresponding to the regulated light. Image processing circuits convert the electrical signals to the two-dimensional code data.

    摘要翻译: 用于读取二维符号的光学读取装置包括具有用于面对符号的开口部分的外壳,夹持部分和用于将对应于二维符号的二维代码数据传送到的一个串行I / F 外部设备 安装在开口部分附近的LED产生光以照亮二维符号。 反射镜将从二维符号反射的光朝向夹持部分反射。 自动光圈机构调节镜子的光线。 二维型CCD产生对应于调节光的电信号。 图像处理电路将电信号转换为二维码数据。

    Data communication apparatus and method including means for and step of
adding dummy character as a new last character of data to be transmitted
    62.
    发明授权
    Data communication apparatus and method including means for and step of adding dummy character as a new last character of data to be transmitted 失效
    数据通信装置和方法包括将虚拟字符添加为要发送的数据的新的最后一个字符的步骤

    公开(公告)号:US5438576A

    公开(公告)日:1995-08-01

    申请号:US144294

    申请日:1993-10-27

    CPC分类号: H04L1/0061 G06F11/10

    摘要: A communication apparatus includes a control circuit for obtaining a transmission text formed of one of a single character and a series of characters, the last of which is one of specified control characters and a character of error check data, and a radio communication unit connected to the control circuit, for storing each character of the transmission text supplied from the control circuit and transmitting the transmission text stored therein. Particularly, the control circuit is arranged to add a dummy character after the character of error check data as a new last character except in the case where the character of error check data has a value identical to the code of the dummy character. The radio communication unit is arranged to transmit the transmission text upon detecting the code of any one of the dummy and specified control characters in the transmission text.

    摘要翻译: 通信装置包括:控制电路,用于获得由单个字符和一系列字符中的一个形成的传输文本,其中最后一个是指定的控制字符之一和错误检查数据的字符;以及无线电通信单元,连接到 控制电路,用于存储从控制电路提供的发送文本的每个字符并发送存储在其中的发送文本。 特别地,除了错误检查数据的字符具有与虚拟字符的代码相同的值的情况之外,控制电路被布置为在错误检查数据的字符之后添加伪字符作为新的最后字符。 无线电通信单元被布置为在检测到传输文本中的虚拟和指定控制字符中的任何一个的代码时发送传输文本。

    Dot-matrix printer with dot counter and temperature sensor for efficient
high-quality printing
    63.
    发明授权
    Dot-matrix printer with dot counter and temperature sensor for efficient high-quality printing 失效
    带数位计数器和温度传感器的DOT-MAT​​RIX打印机,实现高质量打印

    公开(公告)号:US5152619A

    公开(公告)日:1992-10-06

    申请号:US645484

    申请日:1991-01-24

    IPC分类号: B41J29/20 B41J2/30

    CPC分类号: B41J2/30

    摘要: A dot-matrix printer with a print head having plural print elements which are disposed in a row and selectively activated to form a dot or dots in a vertical row of a dot matrix pattern representing a character, having a device for adding to a content of a memory the numbers of dots which are formed by the elements; a device for measuring a time lapse; a temperature sensor for sensing a temperature of the print head; a device for substracting a predetermined value based upon the temperature sensed by the temperature sensor at predetermined time intervals; a device for checking whether the content of the memory has exceeded a reference value; and a control device for controlling the print head so as to cool the print head if the content of the memory has exceeded the predetermined value.

    摘要翻译: 一种点阵式打印机,其具有打印头,所述打印头具有多个打印元素,所述打印头被布置成行并选择性地激活以在表示字符的点阵图案的垂直行中形成点或点,具有用于添加到 记忆由元素形成的点数; 用于测量时间流逝的装置; 用于感测打印头的温度的温度传感器; 基于温度传感器以预定时间间隔感测的温度来减去预定值的装置; 用于检查存储器的内容是否超过参考值的装置; 以及控制装置,用于如果存储器的内容已经超过预定值,则控制打印头以冷却打印头。

    Image writing device, image forming apparatus, and image writing method
    67.
    发明授权
    Image writing device, image forming apparatus, and image writing method 有权
    图像写入装置,图像形成装置和图像写入方法

    公开(公告)号:US09310710B2

    公开(公告)日:2016-04-12

    申请号:US14632188

    申请日:2015-02-26

    IPC分类号: G03G15/043

    CPC分类号: G03G15/043

    摘要: An image writing device includes an exposure device to repeatedly expose a surface of an image bearer along a main-scanning direction during an image forming period to write an image on the image bearer, a speed change detector to detect a change in moving speed in a sub-scanning direction of the surface of the image bearer, a first signal generation circuit to generate a first signal, an image forming period signal generation circuit to generate an image forming period signal synchronously with the first signal, a second signal generation circuit to generate a second signal, the second signal initially appearing in the image forming period being in synchronization with the first signal, and a line synchronization signal generation circuit to generate a line synchronization signal synchronously with the second signal and transmit the line synchronization signal to the exposure device during the image forming period.

    摘要翻译: 一种图像写入装置,包括:曝光装置,用于在图像形成期间沿图像载体的主扫描方向反复曝光以在图像载体上写入图像;速度变化检测器,用于检测图像载体中的移动速度的变化; 图像载体表面的副扫描方向,产生第一信号的第一信号产生电路,与第一信号同步产生图像形成周期信号的图像形成周期信号产生电路,产生第二信号产生电路 第二信号,最初出现在图像形成周期中的第二信号与第一信号同步;线同步信号产生电路,用于与第二信号同步产生线路同步信号,并将线路同步信号发送到曝光装置 在图像形成期间。

    Image forming apparatus, image forming method, and computer program product that performs skew correction
    70.
    发明授权
    Image forming apparatus, image forming method, and computer program product that performs skew correction 有权
    图像形成装置,图像形成方法以及执行偏斜校正的计算机程序产品

    公开(公告)号:US08488203B2

    公开(公告)日:2013-07-16

    申请号:US12725760

    申请日:2010-03-17

    IPC分类号: H04N1/00 H04N1/40 G06K9/32

    CPC分类号: H04N1/506 H04N1/3878

    摘要: An image forming apparatus includes a skew correcting unit that performs skew correction by dividing an input image that has undergone a halftone process into image data in a predetermined skew correction area in a main scanning direction and by shifting the image data in the skew correction area in a sub-scanning direction; an edge detecting unit that detects whether a pixel at a division position is an edge pixel based on concentrations of a set of pixels including the pixel at the division position; a correction area determining unit that, if detected that the pixel at the division position is the edge pixel, determines a correction area that is an area of pixels including the edge pixel to be subjected to concentration correction within the skew correction area; and an edge correcting unit that corrects concentrations of the pixels within the correction area.

    摘要翻译: 图像形成装置包括:偏斜校正单元,其通过将经过半色调处理的输入图像划分为主扫描方向上的预定歪斜校正区域中的图像数据,并且通过将倾斜校正区域中的图像数据移位 副扫描方向; 边缘检测单元,其基于包括分割位置处的像素的像素的集合的浓度来检测分割位置处的像素是否为边缘像素; 校正区域确定单元,如果检测到分割位置处的像素是边缘像素,则确定作为在倾斜校正区域内要进行浓度校正的边缘像素的像素区域的校正区域; 以及校正校正区域内的像素的浓度的边缘校正单元。