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    • 6. 发明授权
    • Coordinate input apparatus
    • 坐标输入装置
    • US5362930A
    • 1994-11-08
    • US905523
    • 1992-06-29
    • Yuichiro YoshimuraAtsushi TanakaKiyoshi KanekoKatsuyuki KobayashiMasaki Tokioka
    • Yuichiro YoshimuraAtsushi TanakaKiyoshi KanekoKatsuyuki KobayashiMasaki Tokioka
    • G06F3/043G06F3/033G08C21/00
    • G06F3/0433
    • A coordinate input apparatus according to the present invention eliminates distortion caused by interference of a asymmetrical plate wave with an asymmetrical plate wave from the vibrations which are detected after they have been propagated in a vibration transmitting member and performs a highly accurate position coordinate detection. The vibrations of a pen which is brought into contact with the vibration transmitting member are detected by sensors provided on both the front and rear surfaces of the vibration transmitting member to determine a coordinate of a position where the vibrating pen has been brought into contact. At that time, the vibration sensors mounted on the front and rear of the vibration transmitting member in an opposed relation detect vibrations on the two surfaces of the transmitting member. The signals which are detected by each pair of front and rear sensors represent vibrations in which the asymmetrical plate waves having the same phase and the 180.degree. out-of-phase asymmetrical plate waves are superimposed on top of one another. The signals of the two sensors are input to a differential circuit. A resultant differential signal is input to a signal waveform detecting circuit. Since the differential signal is a signal in which the asymmetrical waves are cancelled with each other and in which the asymmetrical waves are amplified by twice, reduction in the vibration detection accuracy which is caused by distortion of waveforms can be prevented.
    • 根据本发明的坐标输入装置消除了由不对称板波与由振动传递构件传播后检测到的振动的不对称板波的干扰引起的失真,并执行高精度的位置坐标检测。 通过设置在振动传递构件的前表面和后表面上的传感器来检测与振动传递构件接触的笔的振动,以确定振动笔已经接触的位置的坐标。 此时,以相对的关系安装在振动传递部件的前后的振动传感器检测传递部件的两个表面上的振动。 由每对前后传感器检测到的信号表示振动,其中具有相同相位的不对称板波和180°异相不对称平板波叠加在彼此之上。 两个传感器的信号被输入到差分电路。 得到的差分信号被输入到信号波形检测电路。 由于差分信号是不对称波相互消除并且不对称波被放大两倍的信号,所以可以防止由波形失真引起的振动检测精度的降低。
    • 7. 发明授权
    • Coordinates input apparatus
    • 坐标输入装置
    • US5097415A
    • 1992-03-17
    • US609655
    • 1990-11-29
    • Yuichiro YoshimuraAtsushi TanakaKiyoshi Kaneko
    • Yuichiro YoshimuraAtsushi TanakaKiyoshi Kaneko
    • G06F3/033G06F3/043
    • G06F3/0433
    • A coordinates input apparatus for detecting coordinates of an instructed position from a vibration progagation time on a vibration propagation plate is provided. This apparatus comprises; a vibration pen to generate a vibration; a vibration propagation plate with which the vibration pen is come into contact and which transmits the vibration; a sensor which is arranged in contact relation with the vibration propagation plate and detects the vibration; a vibration-proof material attached to the periphery of the vibration propagation plate so as to have a width of 1/2 of a wavelength of the elastic wave of the vibration; and an operation controller to calculate the contact position of the vibration pen on the vibration propagation plate from the detection time when the vibration was detected by the sensor. The sensor detects the surface wave of the vibration-proof material. With this apparatus, the coordinates of the instructed point can be accurately detected using the vibration with being hardly influenced by the reflected waves from the periphery of the plate.
    • 提供了一种用于从振动传播板上的振动进行时间检测指示位置的坐标的坐标输入装置。 该装置包括: 振动笔产生振动; 与振动笔接触并传递振动的振动传播板; 传感器,其与振动传播板接触地设置并检测振动; 安装在振动传播板的周围的振动材料的宽度为振动弹性波的1/2的宽度; 以及操作控制器,用于当由传感器检测到振动时的检测时间,计算振动笔在振动传播板上的接触位置。 传感器检测防振材料的表面波。 利用该装置,可以使用几乎不受来自板的周边的反射波的影响的振动来精确地检测指示点的坐标。
    • 8. 发明授权
    • Coordinate input apparatus
    • 坐标输入装置
    • US5253187A
    • 1993-10-12
    • US837695
    • 1992-02-19
    • Kiyoshi KanekoKatsuyuki KobayashiTakeshi KamonoRyozo YanagisawaShinnosuke TaniishiYuichiro YoshimuraAtsushi Tanaka
    • Kiyoshi KanekoKatsuyuki KobayashiTakeshi KamonoRyozo YanagisawaShinnosuke TaniishiYuichiro YoshimuraAtsushi Tanaka
    • G06F3/033G06F3/043G06F15/20
    • G06F3/0433Y10S367/907
    • A coordinate input apparatus in which a vibration which was input by a vibration input pen is detected by vibration sensors attached to a vibration propagating plate such as a transparent glass plate or the like and the coordinates of the position of the pen on the plate are detected. The apparatus includes an envelope output circuit to output envelope signals of detection signals of the sensors; a filter circuit for filtering the envelope signals; a gate signal output circuit for detecting a portion, exceeding a predetermined threshold value, of the envelope signal output from the filter circuit and for outputting a gate signal; a first detector for detecting the peak of the envelope signal output from the envelope output circuit and for detecting the envelope signal by using the peak as a reference; a second detector for detecting a phase signal of the detection signal by using the leading edge of the phase signal as a reference in the period of time during which the gate signal output from the gate signal is output circuit; and a calculating circuit to calculate the position coordinates of the input pen on the basis of the propagation time of the envelope signal detected by the first detector and the propagation time of the phase signal detected by the second detector.
    • 检测由振动输入笔输入的振动的坐标输入装置,由安装在振动传播板(例如透明玻璃板等)上的振动传感器以及笔的位置坐标在板上被检测 。 该装置包括一个信封输出电路,用于输出传感器检测信号的包络信号; 用于对包络信号进行滤波的滤波电路; 门信号输出电路,用于检测从滤波器电路输出的包络信号的超过预定阈值的一部分,并输出门信号; 第一检测器,用于检测从包络输出电路输出的包络信号的峰值,并通过使用峰值作为参考来检测包络信号; 第二检测器,用于在从栅极信号输出的栅极信号输出电路的时间周期内通过使用相位信号的前沿作为参考来检测检测信号的相位信号; 以及计算电路,其基于由第一检测器检测到的包络信号的传播时间和由第二检测器检测的相位信号的传播时间来计算输入笔的位置坐标。
    • 10. 发明授权
    • Coordinates input apparatus
    • 坐标输入装置
    • US4886943A
    • 1989-12-12
    • US299440
    • 1989-01-23
    • Noriyuki SuzukiAtsushi TanakaKiyoshi KanekoYuichiro YoshimuraShinnosuke TaniishiKatsuyuki KobayashiShigeki Mori
    • Noriyuki SuzukiAtsushi TanakaKiyoshi KanekoYuichiro YoshimuraShinnosuke TaniishiKatsuyuki KobayashiShigeki Mori
    • G06F3/043G06F3/033G06F3/041G06F3/048
    • G06F3/0433G06F3/0418Y10S367/907
    • There is provided a coordinates input apparatus for detecting the coordinates of a point indicated by an instruction pen on a vibration transmitting plate made of a transparent tablet on the basis of the vibration transmission times on this plate. This apparatus comprises: a pen as vibration generating means for generating a vibration; a tablet as a vibration transmitting plate to transmit the vibration generated by the pen; vibration sensors which are arranged on the tablet and detect at a plurality of positions the vibrations transmitted by making the pen come into contact with the tablet; a microcomputer for obtaining the vibration transmission distances from the vibration transmission times of the vibrations detected by the sensors and for calculating the coordinate point on the tablet with which the pen is come into contact; an output device to output the coordinate point calculated by the microcomputer; an erroneous detection discriminating circuit to discriminate whether the coordinate point calculated is the erroneously detected coordinate point or not; and a controller for allowing a correction point calculating means to calculate and output a correction point in place of the erroneously detected coordinate point.
    • 提供了一种坐标输入装置,用于基于在该板上的振动传播时间来检测由透明片形成的振动传递板上的由指示笔指示的点的坐标。 该装置包括:用于产生振动的笔作为振动产生装置; 作为振动传递板的片剂,用于传递由钢笔产生的振动; 振动传感器布置在平板电脑上,并在多个位置检测通过使笔与片剂接触而传递的振动; 用于获得由传感器检测到的振动的振动传播时间的振动传播距离和用于计算与笔接触的片剂上的坐标点的微型计算机; 用于输出微机计算出的坐标点的输出装置; 一个错误检测鉴别电路,用于鉴别所计算的坐标点是否是错误检测的坐标点; 以及控制器,用于允许校正点计算装置计算并输出校正点以代替错误检测的坐标点。