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1. 发明授权

US4236835A Printer system with compressed print capability 失效
标题翻译：具有压缩打印功能的打印机系统
公开(公告)号：US4236835A
公开(公告)日：1980-12-02
申请号：US970622
申请日：1978-12-18
申请人： David W. Mayne , Raymond F. Melissa
发明人： David W. Mayne , Raymond F. Melissa
IPC分类号： B41J2/515 , G06K15/10 , B41J3/12
CPC分类号： B41J2/515
摘要： A dot matrix printer having a reciprocating hammer bank prints characters in either a standard or a compressed size using one of two different sets of modulation bits stored in a character generator for each character. A control code byte preceding each line of characters to be printed selects the sets of modulation bits in the character generator to be used and in addition selects the repetitive counts to be made by two different decoders in response to timing pulses designating the different dot column positions during each sweep of the hammer bank to control the application of the modulation bits from the character generator to actuating mechanisms for the hammers within the hammer bank. The compressed characters are the same height as but of reduced width compared to the standard characters, with the result that each hammer in the hammer bank prints a greater number of compressed characters than standard characters while bidirectionally reciprocating through a fixed distance relative to a paper or other printable medium.
摘要翻译：具有往复锤组的点阵式打印机使用存储在每个字符的字符发生器中的两组不同调制位之一来以标准或压缩尺寸打印字符。要打印的每行字符之前的控制代码字节选择要使用的字符发生器中的调制位集合，并且另外选择响应于指定不同点列位置的定时脉冲由两个不同解码器进行的重复计数在锤片组的每次扫描期间，控制将字符发生器的调制位应用到锤组内的锤的致动机构。与标准字符相比，压缩字符的高度与宽度减小相同，结果是锤子组中的每个锤子比标准字符打印更多数量的压缩字符，同时相对于纸张双向往复移动一定距离，其他可打印介质。

2. 发明授权

US4463300A Linear motor digital servo control 失效
标题翻译：线性电机数字伺服控制
公开(公告)号：US4463300A
公开(公告)日：1984-07-31
申请号：US303082
申请日：1981-09-17
申请人： David W. Mayne , Alan K. Jennings
发明人： David W. Mayne , Alan K. Jennings
IPC分类号： H02P25/06 , B41J19/30 , H02K33/00 , G05B11/00
CPC分类号： H02K33/00 , B41J19/305
摘要： A linear motor which mounts and drives a hammer bank shuttle assembly in reciprocating fashion within a dot matrix line printer is controlled by a digital servo. The digital servo includes an encoder for generating a pulse each time the shuttle assembly passes one of a succession of different positions along a linear path of movement therefor together with apparatus for measuring the time intervals between successive pulses, comparing the time intervals with a reference value, generating error signals in accordance with the difference and applying the error signals to vary the durations of driving pulses applied to the linear motor. Whenever the shuttle assembly reaches either of opposite end positions along the path of linear movement, the digital servo provides to the linear motor a turnaround signal of predetermined value which drives the linear motor through rebounding from an elastomeric stop member independent of the actual speed of the shuttle assembly and in a manner which is designed to compensate for friction losses during the rebounding. Following each rebounding of the linear motor from an elastomeric stop member the speed of the shuttle assembly is measured, stored and subsequently applied to adjust the value of the turnaround signal applied to the linear motor during the immediately following rebounding of the linear motor from the same elastomeric stop member.
摘要翻译：在点阵线打印机内以往复方式安装和驱动锤子组穿梭组件的线性电动机由数字伺服机构控制。数字伺服机构包括一个编码器，用于每当梭组件沿其一个线性运动路线通过一连串的不同位置之一时产生脉冲，以及用于测量连续脉冲之间的时间间隔的装置，将该时间间隔与参考值进行比较，根据该差异产生误差信号并施加误差信号以改变施加到线性电动机的驱动脉冲的持续时间。每当穿梭组件到达线性移动路径的相对端部位置时，数字伺服器向线性电动机提供预定值的转向信号，该线圈电动机通过弹性止动构件的弹回来驱动线性电动机，而与实际速度无关穿梭组件和以设计用于补偿弹回期间的摩擦损失的方式。在线性电动机从弹性止动构件的每个回弹之后，测量，存储和随后施加滑动组件的速度，以便在线性电动机的紧随其后的回弹期间调整施加到线性电动机的周转信号的值弹性止动件。

3. 发明授权

US3707705A Memory module 失效
标题翻译：记忆模块
公开(公告)号：US3707705A
公开(公告)日：1972-12-26
申请号：US3707705D
申请日：1967-12-20
申请人： JONES V HOWELL JR , DAVID W MAYNE
发明人： HOWELL JONES V JR , MAYNE DAVID W
IPC分类号： G11C11/06 , G11C5/04
CPC分类号： G11C11/06035
摘要： A core memory unit is disclosed using double card modules with each module having an X wire system common to both cards, and further having several Y wire systems, one per bit position (bit plane). The module holds decoders for X and Y wire systems, driven by a predecoder system common to all modules and external thereto. The Y wire systems operate with anticoincidence, the sense wire system is a double wire system, each wire being rectangularly looped as threaded through half of the cores of the bit locations of each bit position to suppress noise.
摘要翻译：公开了使用双卡模块的核心存储器单元，其中每个模块具有两个卡共同的X线系统，并且还具有几个Y线系统，每位位置（位平面）一个。该模块支持X和Y线系统的解码器，由所有模块和其外部共同的预解码器系统驱动。 Y线系统具有防伪作用，感测线系统是双线系统，每根导线通过每个位位置的位位置的半个核心线被方圆形地环绕以抑制噪声。

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