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1. 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。

2. 发明授权

US4064561A CRT key station which is responsive to centralized control 失效
标题翻译： CRT关键站响应集中控制
公开(公告)号：US4064561A
公开(公告)日：1977-12-20
申请号：US745458
申请日：1976-11-26
申请人： Alan K. Jennings
发明人： Alan K. Jennings
IPC分类号： G06F3/023 , G06F3/048 , G06F3/153 , G09G5/08 , G09G5/22 , G06F3/14
CPC分类号： G09G5/222 , G06F3/0489 , G06F3/153 , G09G5/08
摘要： Hardware duplication at each of a plurality of CRT key stations is minimized and centralized control is maintained by performing many traditional CRT key station operations under software control by a central processing unit. Simplified CRT key stations include circuitry providing automatic key stroke repeat for continuously actuated keys only after receipt of a repeat enable signal from the central processing unit for each separate repeat and a tone generator responsive to commands from the central processing unit. The tone generator includes a key click circuit to audibly indicate each completion of a key activation. CRT key station circuitry inserts a configuration code with each key stroke data word which indicates one of a plurality of available key switch arrangements for the CRT key station. The configuration code permits a single key station hardware design to be included in a data entry system with different keyboard configurations such as typewriter, calculator, keypunch or even foreign language to be selected without need for a conversion system at each CRT key station to convert key stroke information to a common code. Instead, a central processing unit may utilize the configuration code to identify an appropriate conversion table stored in memory.
摘要翻译：通过在中央处理单元的软件控制下执行许多传统的CRT关键站操作，使多个CRT关键站中的每一个处的硬件复制被最小化并进行集中控制。简化的CRT关键站包括只有在接收到来自中央处理单元的每个单独重复的重复使能信号和响应于来自中央处理单元的命令的音调发生器时，才能为连续致动的键提供自动关键行程重复。乐音发生器包括一个按键电路，用于可听见地指示每次完成键激活。 CRT键台电路插入配置代码，每个键笔划数据字指示用于CRT键盘的多个可用键开关装置之一。配置代码允许将单个关键站硬件设计包括在具有不同键盘配置的数据输入系统中，例如打字机，计算器，密钥冲击甚至外来语言，而不需要在每个CRT关键站处的转换系统来转换密钥笔画信息到一个共同的代码。相反，中央处理单元可以使用配置代码来识别存储在存储器中的适当的转换表。

3. 发明授权

US4047158A Peripheral processing system 失效
公开(公告)号：US4047158A
公开(公告)日：1977-09-06
申请号：US532636
申请日：1974-12-13
申请人： Alan K. Jennings
发明人： Alan K. Jennings
IPC分类号： G06F3/153 , G06F13/12 , G06F13/22 , G06F13/34 , G09G5/08 , G09G5/22 , G06F3/00
CPC分类号： G06F13/22 , G06F13/12 , G06F13/34 , G06F3/153 , G09G5/08 , G09G5/222
摘要： A medium capacity peripheral processing system provides sophisticated interactive human communication without the extremely large, expensive memory systems that are normally associated with a main frame computer. The system includes a data bus interconnecting a 16 bit parallel processor, a random access memory having up to 64K words of memory storage, up to eight magnetic tape files, up to eight magnetic disk files, a key station multiplexer, and selector channels providing additional communication capabilities. The selector channels permit optional communication with a main frame computer system, a remote data entry system which may be a simple CRT key station or another peripheral processing system, a high speed optical character reader (OCR), a line printer, a computer output microfilm (COM) unit, or other data processing systems or subsystems. The key station multiplexer provides communication of serial address, data and control signals for up to 64 addressable, CRT key station terminals. The CRT key station terminals are dependent upon individual processor generated commands received over a single, bidirectional coaxial cable for each automatic repeat of a data key, each audible tone signal, each key click signal and each modification of the CRT display. Each key station stores a CRT character display of 12 lines of 40 characters each in a buffer which receives only processor initiated information, stores up to three key stroke characters in a key stroke buffer and provides a three bit configuration code indicating one of eight possible keyboard configurations. A single peripheral processing system may thus utilize a single hardware keyboard configuration with any one of up to eight different character configurations being assigned to a given keyboard. The central processor then utilizes the configuration code to select a conversion table stored in memory to convert the key station character code to a standardized character code.

4. 发明授权

US4041469A CRT key station which is responsive to centralized control 失效
标题翻译： CRT关键站响应集中控制
公开(公告)号：US4041469A
公开(公告)日：1977-08-09
申请号：US532714
申请日：1974-12-13
申请人： Alan K. Jennings
发明人： Alan K. Jennings
IPC分类号： G06F3/023 , G06F3/048 , G06F3/153 , G09G5/08 , G09G5/22 , G06F3/02 , G06F3/04
CPC分类号： G09G5/222 , G06F3/0489 , G06F3/153 , G09G5/08
摘要： Hardware duplication at each of a plurality of CRT key stations is minimized and centralized control is maintained by performing many traditional CRT key station operations under software control by a central processing unit. Simplified CRT key stations include circuitry providing automatic key stroke repeat for continuously actuated keys only after receipt of a repeat enable signal from the central processing unit for each separate repeat and a tone generator responsive to commands from the central processing unit. The tone generator includes a key click circuit to audibly indicate each completion of key activation. CRT key station circuitry inserts a configuration code with each key stroke data word which indicates one of a plurality of available key switch arrangements for the CRT key station. The configuration code permits a single key station hardware design to be included in a data entry system with different keyboard configurations such as typewriter, calculator, keypunch or even foreign language to be selected without need for a conversion system at each CRT key station to convert key stroke information to a common code. Instead, a central processing unit may utilize the configuration code to identify an appropriate conversion table stored in memory.
摘要翻译：通过在中央处理单元的软件控制下执行许多传统的CRT关键站操作，使多个CRT关键站中的每一个处的硬件复制被最小化并进行集中控制。简化的CRT关键站包括只有在接收到来自中央处理单元的每个单独重复的重复使能信号和响应于来自中央处理单元的命令的音调发生器时，才能为连续致动的键提供自动关键行程重复。音调发生器包括一个按键电路，用于可听见地指示每次完成键激活。 CRT键台电路插入配置代码，每个键笔划数据字指示用于CRT键盘的多个可用键开关装置之一。配置代码允许将单个关键站硬件设计包括在具有不同键盘配置的数据输入系统中，例如打字机，计算器，密钥冲击甚至外国语言，而不需要在每个CRT密钥站处的转换系统来转换密钥笔画信息到一个共同的代码。相反，中央处理单元可以使用配置代码来识别存储在存储器中的适当的转换表。

5. 发明授权

US4415286A Variable print density encoder system 失效
标题翻译：可变打印浓度编码器系统
公开(公告)号：US4415286A
公开(公告)日：1983-11-15
申请号：US303081
申请日：1981-09-17
申请人： Alan K. Jennings
发明人： Alan K. Jennings
IPC分类号： B41J2/515 , B41J25/00 , G06K15/00 , G06K15/10 , B41J19/32
CPC分类号： B41J25/006 , G06K15/10
摘要： In a printer system in which hammers mounted along a shuttle assembly which reciprocates relative to a print paper are selectively energized to impact the paper and print dots thereon, the dot density is made variable by an encoder system responsive to the position of the shuttle assembly as it traverses a linear path of motion. The encoder system includes a decoder for generating a succession of fence post pulses as the shuttle assembly reaches each of a succession of different positions along the linear path of motion and circuitry for generating a succession of hammer firing pulses in response to and having a desired phase relationship with the fence post pulses. The hammer firing pulses may occur at a frequency the same as or different from the frequency of the fence post pulses to provide a desired print density. A stored initial offset value is used to initially establish the desired phase relationship between the hammer firing pulses and the fence post pulses. Thereafter, a stored pulse interval value is used to generate the hammer firing pulses at the desired frequency. The desired phase relationship is maintained by measuring the time distance between selected ones of the hammer firing pulses and the preceding fence post pulses, comparing the measured time interval with a stored value representing the desired offset and applying any difference as an error signal to alter the time interval between the immediately following pair of hammer firing pulses.
摘要翻译：在打印机系统中，沿着相对于打印纸往复运动的梭组件安装的锤被选择性地激励以冲击纸张并在其上打印点，通过编码器系统使得点密度可变地响应于梭组件的位置变为它穿过线性运动路径。编码器系统包括一个解码器，用于随着穿梭组件达到沿着线性运动路线的一系列不同位置和用于响应并具有所需相位的电路产生一连串的击发脉冲的电路，产生一连串的栅栏脉冲脉冲与栅栏后脉冲的关系。锤击发射脉冲可以以与栅栏脉冲脉冲的频率相同或不同的频率发生，以提供期望的打印密度。存储的初始偏移值用于初始建立锤击发射脉冲和栅栏脉冲之间的所需相位关系。此后，使用存储的脉冲间隔值来产生所需频率的击发脉冲。通过测量选定的击发脉冲和先前的栅栏脉冲之间的时间距离来维持期望的相位关系，将测量的时间间隔与表示期望偏移的存储值进行比较，并将任何差值作为误差信号来改变紧随其后的一对击打脉冲之间的时间间隔。

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