公开(公告)号：US3742452A

公开(公告)日：1973-06-26

申请号：US3742452D

申请日：1971-10-29

Applicant: IBM

Inventor： DERVAN J ,  ELSNER M ,  AUDRETSCH L ,  BLISS B ,  GRIFFITH L ,  THORPE R

IPC: G06F13/00 ,  H04L12/403 ,  H04J3/02

CPC classification number: H04L12/403

Abstract: Multiple terminals linked to one broadband cable in a sequence are interrogated by directionally coupled configuring signals and service polling signals. Configuring signals are utilized to permit selectively participating terminals to order themselves into service polling groups. Service polling signals offer successive terminals in a polling group exclusive access to a facility shared by all terminals of the group (e.g. time or frequency channel on the cable) which has not been seized by a preceding terminal of the group. Isochronal feedback shifting techniques are employed in the configuring and polling selection processes. Participating terminals progressively attach supplementary signals to the configuring and service polling signal trains ''''on-the-fly'''', without otherwise modifying or delaying the trains, by isochronally matching the signals of the passing train, extrapolating the supplementary signals and transmitting the supplementary signals immediately behind the end of the passing train through appropriate directional transmission coupling to the cable.

Abstract translation: 通过定向耦合的配置信号和服务轮询信号来询问以一个序列连接到一个宽带电缆的多个终端。 利用配置信号来允许有选择地参与的终端自己进入服务轮询组。 服务轮询信号在轮询组中提供连续终端，独占访问组中所有终端共享的设施（例如，电缆上的时间或频率信道），该组织尚未被该组的先前终端占用。 在配置和轮询选择过程中采用等时反馈移位技术。 参与终端通过等速匹配通过列车的信号，外推补充信号并立即发送补充信号，逐渐将辅助信号附加到配置和服务轮询信号列表上，而不用其他方式修改或延迟列车 通过适当的方向传输耦合到电缆后通过列车的末端。

公开(公告)号：US3798610A

公开(公告)日：1974-03-19

申请号：US3798610D

申请日：1972-12-20

Applicant: IBM

Inventor： BLISS B ,  DERVAN J ,  GRIFFITH L ,  VOGEL N ,  PUNG B ,  THORPE R

IPC: G06F3/147 ,  G06F3/023 ,  G06F3/048 ,  G06F3/153 ,  G09G5/40 ,  G09G5/42 ,  G06F3/04 ,  G06F3/14 ,  H04L5/00

CPC classification number: G06F3/153 ,  G06F3/04892 ,  G09G5/40 ,  G09G5/42

Abstract: Time multiplexed signal communications between a host computer and subordinate data processing terminals include coded and noncoded information. Coded information originated by the host includes entry-separation marker signals. Individual marker signals are used at terminals to control access to associated particular time spaces of the multiplex frame. The host signals are serially stored by addressed terminals in the time sequence of transmission. The stored marker signals are protected from modification at terminals and control write-in access to storage spaced allocated to the associated time segments; thereby controlling terminal editing operations. Edited information in unprotected terminal storage spaces is easily segregated -- e.g., for compact transmission to the host -- by reference to the stored marker signals. When the non-coded signals comprise raster scanned picture information displayable at terminal display apparatus the markers are used to generate cursors indicating edit-accessible positions (e.g., character entry spaces). A distinct displaced cursor provides unique indication of the space next accessible for entry in a normal keying (i.e., typing) sequence.

Abstract translation: 主计算机与下属数据处理终端之间的时间复用信号通信包括编码和非编码信息。 由主机发起的编码信息包括入口分离标记信号。 在终端处使用单个标记信号来控制对多路复用帧的相关特定时间空间的访问。 主机信号按发送时间顺序由寻址终端串行存储。 存储的标记信号被保护以免在终端处的修改，并且控制对分配给相关联的时间段的间隔的写入访问; 从而控制终端编辑操作。 未保护的终端存储空间中的编辑信息容易地被分离 - 例如，通过参考所存储的标记信号来简单地传输到主机。 当非编码信号包括可在终端显示装置处显示的光栅扫描图像信息时，标记用于产生指示编辑可访问位置（例如，字符输入空格）的光标。 不同的移位光标提供了下一个可访问的空间的唯一指示，以便在正常密钥（即打字）序列中输入。

公开(公告)号：SE306375B

公开(公告)日：1968-11-25

申请号：SE934365

申请日：1965-07-15

Applicant: IBM

Inventor： LAZARCHICK N ,  THORPE R

IPC: G01R13/26 ,  G09G1/00 ,  G09G1/10 ,  H01J29/52

Abstract: 1,090,065. Cathode-ray tube circuits; transistor amplifying circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. June 17, 1965 [July 16, 1964], No. 25660/65. Headings H3T and H4T. The intensity of the trace on a cathode-ray tube screen is maintained in linear relationship to a control voltage proportional to the velocity of the beams across the screen. The invention is described in connection with a display arrangement, associated with a data processing system or computer, in which vectors are traced on the tube screen (by appropriate X and Y beam deflections) in constant intervals of time irrespective of their lengths so that the beam velocity may vary for different vectors (Figs. 3 to 5, not shown). The length of the vector is thus proportional to the beam velocity and in carrying out the present invention a control voltage proportional to such length is derived from the computer &c. and applied via a differential amplifier, termed a summing node, 25, Fig. 1, and amplifier 27 to the control grid 29 of the display tube the cathode circuit of which includes an impedance 33 supplying a negative feedback voltage to 25 via amplifier 37. This arrangement is stated to provide a linear relationship between the control voltage and the cathode current of the tube. As described in connection with Fig. 3 (not shown), the control voltage consists of a signal proportional to the larger plus one third of the smaller of the X and Y deflection changes required for the tracing of each vector (long vectors being considered as the sum of a number of smaller ones) and approximates to a signal proportional to the square root of the sum of the squared deflection changes. The amplifiers 27 and 37 comprise conventional transistor arrangements and the summing node 25 consists of a differential amplifier utilizing a "long-tailed" pair (45), (47), Fig. 2 (not shown), supplied from constant current sources (51), (55) and (93, (97). In operation, a brightness potentiometer (101) sets the upper limit to the positive voltage supplied to control grid (29) and this varies downwardly as the positive input control voltage at terminal (41) increases. The contrast of the display is adjusted by rheostat (78).