专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4665282A Tablet type coordinate input apparatus using elastic wave 失效
标题翻译：平板式坐标输入装置使用弹性波
公开(公告)号：US4665282A
公开(公告)日：1987-05-12
申请号：US758463
申请日：1985-07-24
申请人： Ichiya Sato , Takao Yoneyama , Masanori Tanabe , Kanji Kawakami , Hisao Okada , Soji Sasaki , Shigeru Inose , Mareo Suto , Hideo Uzuhashi
发明人： Ichiya Sato , Takao Yoneyama , Masanori Tanabe , Kanji Kawakami , Hisao Okada , Soji Sasaki , Shigeru Inose , Mareo Suto , Hideo Uzuhashi
IPC分类号： G06F3/033 , G06F3/043 , G08C21/00
CPC分类号： G06F3/0433
摘要： A tablet type coordinate input apparatus comprises a flat medium for propagating a longitudinal elastic wave, longitudinal elastic wave detecting elements disposed on part of the end-adjacent side surfaces or of the front surface of the flat medium, a longitudinal elastic wave input member having an end portion terminating in a sharp-pointed end and brought into pressure engagement at that end with any desired position on the surface of the flat medium to radiate the longitudinal elastic wave from that end, an amplifier circuit amplifying electrical signals indicative of the elastic wave detected by the detecting elements, a comparator circuit comparing the signals amplified by the amplifier circuit with a predetermined threshold voltage thereby generating delay pulse signals corresponding to the propagation times of the longitudinal elastic wave, a counter circuit counting the lengths of time elapsed from the time of radiation of the longitudinal elastic wave toward the flat medium as a result of pressure engagement of the input member therewith to the time of generation of the delay pulse signals, and a computing circuit computing the coordinates on the basis of the time signals applied from the counter circuit.
摘要翻译：平板式坐标输入装置包括用于传播纵向弹性波的平坦介质，设置在平坦介质的端部相邻侧表面或前表面的一部分上的纵向弹性波检测元件，纵向弹性波输入构件，具有端部终止于尖锐的端部，并在该端部与平坦介质的表面上的任何期望位置进行压力接合，以从该端射出纵向弹性波，放大器电路放大指示检测到的弹性波的电信号通过检测元件，比较器电路将由放大器电路放大的信号与预定阈值电压进行比较，从而产生对应于纵向弹性波的传播时间的延迟脉冲信号;计数电路对从纵向弹性波向平坦介质辐射由此输入构件与其之间的压力接合产生延迟脉冲信号的时间，以及计算电路根据从计数器电路施加的时间信号计算坐标。

IPRDB

热门服务

关于我们

友情链接

联系方式