公开(公告)号：US3673575A

公开(公告)日：1972-06-27

申请号：US3673575D

申请日：1970-06-29

Applicant: IBM

Inventor： BURTON PAUL T ,  COLE WALTER E ,  FRASSETTO HENRY E JR ,  GIBSON ROBERT G ,  GREENBERG ALLAN ,  HANDLOFF LOUIS E ,  RADLINSKY RAYMOND

IPC: G06F9/26 ,  G06F9/00

CPC classification number: G06F9/267

Abstract: A microprogrammed common control unit for effecting the transfer of data between I/O (input/output) devices and the main storage unit of a data processing system, uses both long format control words and short format control words, the short words having half as many bit positions as the long words in the preferred embodiment, thereby minimizing the size of control storage required. Addressing of the control storage unit effects readout of one long word or a pair of short words. Predetermined bits in each control word cause transfer of a first part (half) of the next accessed long word or either one of a next accessed pair of short words to a control register for execution. If a long word has been accessed, one of said bits is effective during execution of the first part of the long word to initiate the transfer of the second word to the control register for execution after the termination of the execution of the first part of the word. Consecutive decode of the first and second portions of a long word permits a smaller control register and substantial sharing of decode circuits by different long format control word fields entered into at least partially corresponding positions of the control register, thereby effecting substantial economies.

Abstract translation: 用于在I / O（输入/输出）设备和数据处理系统的主存储单元之间进行数据传输的微程序公共控制单元使用长格式控制字和短格式控制字，短字具有一半 许多比特位置作为优选实施例中的长字，由此最小化所需的控制存储器的大小。

公开(公告)号：US3864692A

公开(公告)日：1975-02-04

申请号：US40100673

申请日：1973-09-26

Applicant: IBM

Inventor： MCDONNELL JAMES A ,  MCGUIRE ROBERT E ,  RADLINSKY RAYMOND

IPC: B41J2/075 ,  B41J2/09 ,  B41J2/095 ,  G06K15/10 ,  H04N1/034 ,  G01D15/18

CPC classification number: B41J2/09

Abstract: An ink jet printer in which ink droplets issuing from a source serially pass through an electrically energizable deflection field which is activated at regularly recurring intervals. Deflection of the drops occurs along different trajectories toward a recording medium because of the variable time each droplet is subjected to the energized deflection field. The droplets which are deflected have the same physical or electrical characteristics and are not given differing charges, for example, before entry into the deflection field. Both electrically chargeable droplets and magnetic droplets may be used as the marking fluid when directed according to time dependent deflection. Generally, the deflection field is of sufficient length to include simultaneously all droplets which will comprise a full character stroke on the recording medium and the deflection signal is a square wave selectively applied. However, deflection fields may be shortened and the applied signal may either increase or decrease with time during the energizing interval. In addition, apparatus may be included to produce deflection along either of two coordinate axes and means are disclosed to select droplets required for printing while discarding others during issuance of the droplets from the source at a fixed generation rate.

Abstract translation: 一种喷墨打印机，其中从源发出的墨滴串联地通过可定时重复的间隔激活的电可激励的偏转场。 由于每个液滴经受能量偏转场的时间可变，所以液滴的偏转发生在朝向记录介质的不同轨迹上。 被偏转的液滴具有相同的物理或电学特性，并且不具有不同的电荷，例如在进入偏转场之前。 当根据时间依赖性偏转指示时，可电荷充液的液滴和磁滴都可用作标记液。 通常，偏转场具有足够的长度以同时包括将在记录介质上包括全字符行程的所有液滴，并且偏转信号是选择性地施加的方波。 然而，可以缩短偏转场，并且施加的信号可以在通电间隔期间随时间增加或减小。 此外，可以包括装置以产生沿着两个坐标轴中的任一个的偏转，并且公开了用于在以固定的发生速率从源发出液滴的同时丢弃打印所需的液滴的装置。