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1. 发明授权

US4465999A Matrix driving method for electro-optical display device 失效
公开(公告)号：US4465999A
公开(公告)日：1984-08-14
申请号：US99805
申请日：1979-12-03
申请人： Akira Tsuzuki , Hiro Fujita , Shigeru Morokawa
发明人： Akira Tsuzuki , Hiro Fujita , Shigeru Morokawa
IPC分类号： G02F1/1345 , G09F9/302 , G09G3/18 , G09G3/36
CPC分类号： G02F1/1345 , G09F9/302 , G09G3/18 , G09G3/3622 , G09G3/3681 , G09G3/3692
摘要： A method of cyclically driving an electro-optical display device having a matrix array of a plurality of row electrodes and a plurality of column electrodes, wherein said column electrodes intersect with said row electrodes to provide a plurality of display elements at intersections between said row and column electrodes, comprising the steps of: applying row drive signals to said row electrodes, respectively; and applying one of first, second and third column drive signals to each of said column electrodes, with said first column drive signal inducing a non-display state at all of the display elements along each column electrode, said second column drive signal inducing a non-display state at a single display element along said each column electrode and inducing a display state at the other two display elements along said each column electrode, and said third column drive signal inducing a display state at all of the display elements along said each column electrode; wherein each of said row drive signals takes a plurality of voltage potentials during a half cycle period divided into prescribed time intervals and one of said row drive signals takes one of said voltage potentials different from those of the other of said row drive signals during each of said prescribed time intervals; and wherein said first column drive signal takes a reference voltage potential equal to the mean value of said voltage potentials of said row drive signals during said prescribed time intervals of said half cycle period, said second column drive signal takes a first voltage potential different from those of said row drive signals during one of said prescribed time interval, said reference voltage potential during another one of said prescribed time intervals, and a second voltage potential different from those of said row drive signals during another one of said prescribed time intervals, and said third column drive signal takes the first and second voltage potentials during each of said prescribed time intervals.

2. 发明授权

US4024416A Method for controlling frequency of electrical oscillations and frequency standard for electronic timepiece 失效
标题翻译：控制电子振荡频率和电子时钟频率标准的方法
公开(公告)号：US4024416A
公开(公告)日：1977-05-17
申请号：US685192
申请日：1976-05-10
申请人： Hiro Fujita , Shigeru Morokawa , Akira Tsuzuki
发明人： Hiro Fujita , Shigeru Morokawa , Akira Tsuzuki
IPC分类号： G04G3/00 , G04G3/02 , G04G7/00 , H03B5/32 , H03K3/353 , H03K1/17
CPC分类号： G04G3/027 , G04G7/00
摘要： A frequency standard for an electronic timepiece comprising a low frequency oscillator and a high frequency oscillator of which the frequency is an integral multiple of a predetermined frequency of the lower frequency oscillator. A phase difference detector is coupled to the lower and higher frequency oscillators to produce a signal occurring at intervals depending on the phase difference between the two oscillators. A frequency divider is provided to divide down the frequency of the signal by the integral multiple to produce a phase difference signal. The phase difference signal is algebraically added to the lower frequency oscillator signal to generate an output signal of which frequency is equal to that of the high or frequency oscillation signal divided by the integral multiple.
摘要翻译：一种电子时钟的频率标准，包括低频振荡器和频率为低频振荡器的预定频率的整数倍的高频振荡器。相位差检测器耦合到低频和高频振荡器以产生取决于两个振荡器之间的相位差的间隔发生的信号。提供分频器以将信号的频率除以积分倍数以产生相位差信号。将相位差信号代数加到较低频率的振荡器信号上，以产生频率等于高频或频率振荡信号除以整数倍的频率的输出信号。

3. 发明授权

US4443062A Multi-layer display device with nonactive display element groups 失效
标题翻译：具有非活动显示元件组的多层显示设备
公开(公告)号：US4443062A
公开(公告)日：1984-04-17
申请号：US187671
申请日：1980-09-16
申请人： Seigo Togashi , Akira Tsuzuki , Hiro Fujita
发明人： Seigo Togashi , Akira Tsuzuki , Hiro Fujita
IPC分类号： G02F1/1347 , G02F1/155 , G04G9/00 , G09G3/16 , G02F1/133
CPC分类号： G09G3/16 , G02F1/1347 , G02F1/155 , G04G9/0029 , G04G9/0082
摘要： In a multi-layer display device such as a liquid crystal display, each of a plurality of sets of display elements is defined by a corresponding common electrode and a plurality of segment electrodes. Segment electrodes of sets of display elements which will not be activated simultaneously are connected together, with at least one of these sets being maintained in a deactivated state by means of a special drive signal applied to the corresponding common electrode. The level of time-sharing which must be utilized for driving the various common electrodes, for a given number of external connections to the segment electrodes, can thereby be reduced, or the overall number of connections made to the display device can be substantially reduced.
摘要翻译：在诸如液晶显示器的多层显示装置中，多组显示元件由相应的公共电极和多个分段电极限定。将不会同时激活的一组显示元件的段电极连接在一起，其中这些组中的至少一个通过施加到相应的公共电极的特殊驱动信号保持在去激活状态。因此，可以减少对于给定数量的对段电极的外部连接的用于驱动各种公共电极的分时电平，或者可以显着减少对显示装置的连接总数。

4. 发明授权

US4264967A Unit time producing system 失效
标题翻译：单位时间生产系统
公开(公告)号：US4264967A
公开(公告)日：1981-04-28
申请号：US85457
申请日：1979-10-16
申请人： Hiro Fujita , Akira Tsuzuki
发明人： Hiro Fujita , Akira Tsuzuki
IPC分类号： G04G3/00 , G04F5/06 , G04G3/02 , G04G7/00 , H03B5/32 , H03K23/66 , G04F5/00 , G04B17/12
CPC分类号： G04F5/06 , G04G3/027 , G04G7/00
摘要： In an electronic timepiece, a system for producing a unit time signal with a high degree of frequency stability, composed of a low frequency oscillator, a high frequency oscillator of a high degree of frequency stability which is activated only during periodic short intervals, and means for producing a timebase signal which is an exact integral submultiple in frequency of the high frequency oscillator signal, by modifying the output signal from the low frequency oscillator on the basis of periodically recurring phase coincidence between the high and low frequency oscillator signals. Information on this phase variation is stored in digital form, and is utilized to correct the low frequency signal during periods when the high frequency oscillator is inactivated.
摘要翻译：在电子钟表中，具有频率稳定性高的单位时间信号的系统，由低频振荡器，频率稳定度高的高频振荡器构成，该高频振荡器仅在周期性短的时间间隔内被激活，用于通过基于高频和低频振荡器信号之间的周期性循环相位一致来修改来自低频振荡器的输出信号来产生作为高频振荡器信号的频率中的精确积分微分的时基信号。关于该相位变化的信息以数字形式存储，并且用于在高频振荡器未激活的时段期间校正低频信号。

5. 发明授权

US4244043A Frequency division system 失效
标题翻译：分频系统
公开(公告)号：US4244043A
公开(公告)日：1981-01-06
申请号：US25048
申请日：1979-03-29
申请人： Hiro Fujita , Akira Tsuzuki , Heihachiro Ebiha , Fukuo Sekiya
发明人： Hiro Fujita , Akira Tsuzuki , Heihachiro Ebiha , Fukuo Sekiya
IPC分类号： G04G3/02 , H03L7/191 , H03L7/00
CPC分类号： G04G3/02 , H03L7/191 , Y10S331/03
摘要： A system for performing frequency division of a high frequency signal by intermittent operation of a frequency dividing counter circuit and by a phase lock loop circuit, in which phase lock is periodically achieved with an output of the counter circuit. Phase lock loop circuit is of novel design which provides exact phase lock without cyclic variations from the reference phase.
摘要翻译：一种用于通过分频计数器电路和锁相环电路的间歇操作来执行高频信号分频的系统，其中通过计数器电路的输出周期性地实现锁相。锁相环电路具有新颖的设计，可提供精确的相位锁定，无参考相位的循环变化。

6. 发明授权

US4241435A Electronic timepiece oscillator circuit 失效
标题翻译：电子钟表振荡电路
公开(公告)号：US4241435A
公开(公告)日：1980-12-23
申请号：US81588
申请日：1979-10-03
申请人： Hiro Fujita , Akira Tsuzuki
发明人： Hiro Fujita , Akira Tsuzuki
IPC分类号： G04G3/00 , G04G3/02 , H03L7/00 , H03L7/06 , G04C19/00 , G04B17/12 , H03B27/00
CPC分类号： G04G3/02 , H03L7/00
摘要： An electronic timepiece having a high frequency oscillator with a high level of frequency stability and an electronically controlled low frequency oscillator. The phase of a high frequency signal from the high frequency oscillator is compared with a signal from the low frequency oscillator, and a digital signal is produced in accordance with the phase difference. The digital signal alternately controls the frequency of the low frequency signal to be slightly greater than an exact submultiple of that of the high frequency signal and slightly less that an exact submultiple of the high frequency signal, so that with respect to a relatively long time interval the frequency of the low frequency signal is an exact submultiple of that of the high frequency signal, the low frequency signal being thereby utilizable as a timebase signal for the timepiece.
摘要翻译：一种具有高频率稳定度的高频振荡器和电子控制的低频振荡器的电子钟表。将来自高频振荡器的高频信号的相位与来自低频振荡器的信号进行比较，并根据相位差产生数字信号。数字信号交替地控制低频信号的频率略高于高频信号的精确微分，并且略高于高频信号的确切的多个，使得相对于较长的时间间隔低频信号的频率与高频信号的频率精确地相同，因此低频信号可用作钟表的时基信号。

7. 发明授权

US4110967A Method and system for driving liquid crystal display device 失效
标题翻译：用于驱动液晶显示装置的方法和系统
公开(公告)号：US4110967A
公开(公告)日：1978-09-05
申请号：US719110
申请日：1976-08-31
申请人： Hiro Fujita
发明人： Hiro Fujita
IPC分类号： G04B47/06 , G04G9/00 , G04B19/30
CPC分类号： G04B47/06 , G04G9/0029 , G04G9/007 , G04G9/0094
摘要： A method and system for driving a liquid crystal display device including a first display section arranged in a first predetermined manner and a second display section arranged in a second predetermined manner, in which the first display section is driven in a static display mode whereas the second display section is driven in a matrix display mode.

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