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公开(公告)号：US11301086B2
公开(公告)日：2022-04-12
申请号：US16449654
申请日：2019-06-24
Applicant: FUTABA CORPORATION
Inventor： Takashi Muguruma , Terukazu Sugimoto , Katsumi Takayama , Hiroyuki Tanaka
Abstract: A touch panel driving device is provided for sequentially performing a scanning of selecting a pair of transmission signal lines from N number of transmission signal lines and a pair of reception signal lines from M number of reception signal lines. The touch panel driving device includes a reception circuit for respectively receiving, from the pair of reception signal lines, reception signals whose waveforms are changed due to a capacitance change caused by a touch operation and for generating a detection value for detecting the touch operation by comparing the received reception signals, and a plurality of noise filters provided in signal paths from the M number of reception signal lines to the reception circuit for performing a filtering operation of the same filtering characteristics on each of the reception signals supplied to the reception circuit from the pair of reception signal lines.
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公开(公告)号：US09324263B2
公开(公告)日：2016-04-26
申请号：US14313321
申请日：2014-06-24
Applicant: Futaba Corporation
Inventor： Terukazu Sugimoto , Hiroyuki Tanaka
CPC classification number: G09G3/3216 , G09G3/2014 , G09G2310/0272 , G09G2320/0233 , G09G2320/0285
Abstract: A display driver for driving data lines according to gradation values of pixels in a display unit is provided. The display driver includes a correction value generating unit configured to count the number of display data for each of the gradation values in display data corresponding to pixels on each of scanning lines on a scanning line basis, and generate correction values of the display data based on the counting result, and a driving signal generating unit configured to perform a correction process to the display data by using the correction values generated by the correction value generating unit, and generate a data line driving signal for driving each of the data lines based on the corrected display data.
Abstract translation: 提供了用于根据显示单元中的像素的灰度值驱动数据线的显示驱动器。 显示驱动器包括：校正值生成单元，被配置为对与扫描线上的每个扫描线上的像素相对应的显示数据中的每个灰度值的数量进行计数，并且基于扫描线生成校正值 所述计数结果以及驱动信号生成单元，被配置为通过使用由所述校正值生成单元生成的校正值对所述显示数据进行校正处理，并且生成用于基于所述校正值生成单元驱动每个所述数据线的数据线驱动信号 校正显示数据。
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公开(公告)号：US10592058B2
公开(公告)日：2020-03-17
申请号：US16254689
申请日：2019-01-23
Applicant: Futaba Corporation
Inventor： Terukazu Sugimoto , Takashi Muguruma , Hiroyuki Tanaka , Katsumi Takayama , Cheng-Che Ho , Fumikazu Omoto
Abstract: A touch panel driving device, for sequentially performing scanning for selecting a pair of adjacent transmission signal lines and a pair of adjacent reception signal lines on a touch panel, includes a reception circuit configured to receive reception signals whose waveforms are changed by a capacitance change caused by an operation from the pair of reception signal lines of the touch panel and generate a detection value for monitoring a touch panel operation. The reception circuit generates the detection value by comparing levels of the reception signals from the reception signal lines while sequentially switching capacitance values of a measurement capacitance unit connected to one of the reception signal lines. The measurement capacitance unit includes capacitance units each forming a certain capacitance value by parallel connection or series connection of capacitors as a capacitance unit forming one capacitance value used for switching the capacitance value of the measurement capacitance unit.
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