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1. 发明授权

US3678847A Hammer firing system for a high speed printer 失效
标题翻译：用于高速打印机的HAMMER FIRING系统
公开(公告)号：US3678847A
公开(公告)日：1972-07-25
申请号：US3678847D
申请日：1970-06-25
申请人： POTTER INSTRUMENT CO INC
发明人： PEAR CHARLES B JR , ROSS JOSEPH A
IPC分类号： B41J2/495 , B41J9/38 , B41J9/42 , H01F7/12
CPC分类号： B41J9/38 , B41J2/495 , B41J9/42
摘要： In a high speed printer the hammers are fired by first applying a firing pulse to the hammer and then applying a damping pulse to the hammer as the hammer is rebounding. The damping pulse cancels out the kinetic energy of the hammer and brings it more quickly to rest each time the hammer is fired. The firing circuit comprises a transistor having the hammer coil connected in the collector circuit thereof and a resistance in the emitter circuit thereof. When the hammer is fired the transistor is initially driven into saturation. When the transistor comes out of saturation, negative feedback provided by the resistance in the emitter circuit maintains the firing pulse current constant to the end of the firing pulse.
摘要翻译：在高速打印机中，通过首先向锤子施加击发脉冲，然后在锤子反弹时向锤子施加阻尼脉冲，来对锤进行点火。阻尼脉冲消除了锤子的动能，并且每次锤子被击发时，其更快地保持静止。点火电路包括具有连接在其集电极电路中的电感线圈和其发射极电路中的电阻的晶体管。当锤子被击发时，晶体管最初被驱动到饱和状态。当晶体管脱离饱和时，由发射极电路中的电阻提供的负反馈维持着火脉冲电流恒定到触发脉冲的结束。

2. 发明授权

US3656154A Apparatus for converting a cyclic analog signal to a digital signal 失效
标题翻译：将循环模拟信号转换为数字信号的装置
公开(公告)号：US3656154A
公开(公告)日：1972-04-11
申请号：US3656154D
申请日：1970-09-09
申请人： POTTER INSTRUMENT CO INC
发明人： ROSS JOSEPH A , HEMDAL HAKAN O
IPC分类号： G06K11/00 , H03M1/00 , H03K13/175
CPC分类号： G06K11/00 , H03M1/30
摘要： The specification and drawings disclose 10 photocells arranged to view a full cycle of a space distributed analog signal. Each photocell is coupled to the input of an amplifier whose output rests in one binary state if the input exceeds one level and rests in another binary state if its input falls below another level. Of the large number of combinations in which the binary outputs of the amplifiers can exist, logic circuitry responsive to certain combinations only produces one unique output for each incremental displacement of the periodically varying signal.
摘要翻译：本说明书和附图公开了10个光电管，用于查看空间分布式模拟信号的整个周期。每个光电池耦合到放大器的输入端，如果输入超过一个电平，则其输出处于一个二进制状态，如果其输入降低到另一个电平，则放置在另一个二进制状态。在可以存在放大器的二进制输出的大量组合中，响应于某些组合的逻辑电路仅为周期性变化信号的每个增量位移产生唯一的输出。

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