公开(公告)号：US3906151A

公开(公告)日：1975-09-16

申请号：US35301273

申请日：1973-04-20

申请人： SIEMENS AG

发明人： GROSSMANN GUNTER ,  KERN PETER ,  KOTTER KARL-HEINZ ,  SCHAFFER BERNHARD ,  SCHMID LOTHAR ,  THILENIUS ARNULF ,  WEIDNER PETER

IPC分类号： H04L12/52 ,  H04L11/00

CPC分类号： H04L12/52

摘要： A method and apparatus for converting characters in a programcontrolled data exchange installation is described. The exchange installation includes at least one common storage unit storing data and programs and processing units inter-operating with the storage unit in a cyclic manner. At least one of the processing units is a program control unit, and at least one is a line termination unit. An additional character handling unit is provided for carrying out character translation. The latter apparatus includes a connecting device regulating the traffic with the common storage, a control section controlling the operations for the various tasks to be performed and a storage section. The latter storage section forms a channel storage, which is divided into separate channel storage areas, each containing a series of channel locations. At the start of a character handling operation initiated by the program control, the channel locations are selectively allocated for the duration of a character handling operation, by entering a corresponding line number of the access line determined by the line number. In order for the character handling unit to receive instructions and data in the channel storage and to transfer message and data from the channel storage it gains cyclic access to specified areas in the common storage which are provided for the reception of instructions, messages and data.

摘要翻译： 描述了用于在程序控制的数据交换装置中转换字符的方法和装置。 交换装置包括至少一个公共存储单元，其存储以循环方式与存储单元相互操作的数据和程序以及处理单元。 至少一个处理单元是程序控制单元，并且至少一个是线路终端单元。 提供了一个附加的字符处理单元来进行字符转换。 后一种装置包括用公共存储器调节流量的连接装置，控制要执行的各种任务的操作的控制部分和存储部分。 后一存储部分形成信道存储器，其被分成单独的信道存储区域，每个信道存储区域包含一系列信道位置。 在由程序控制开始的字符处理操作开始时，通过输入由行号确定的访问线的相应行号，在字符处理操作的持续时间内选择性地分配频道位置。 为了使字符处理单元在信道存储器中接收指令和数据，并且从信道存储器传送消息和数据，其获得循环访问公共存储器中为接收指令，消息和数据提供的指定区域。

公开(公告)号：US3920899A

公开(公告)日：1975-11-18

申请号：US44647474

申请日：1974-02-27

申请人： SIEMENS AG

发明人： RIEDEL EKKEHARD ,  SCHMID LOTHAR ,  GIEBLER FRITZ

IPC分类号： H04L12/26 ,  H04L25/02

CPC分类号： H04L43/50

摘要： A method and circuit arrangement are described by means of which a testing exchange station can determine whether a predetermined converter circuit and out-going trunk line are in an operative condition or a busy signal will be received therefrom. The method contemplates transmitting a test signal from a testing exchange station to the converter circuit in question and determining the conditions of the tested converter circuit by determining the condition of a reflected signal from said tested converter circuit to said testing exchange station. An apparatus is described whereby this reflecting procedure is facilitated by replacing the reflection-preventing contacts in the holding circuit for a transmission relay in the converter circuit with a continuous connection. Further, in those converter circuits which are permanently connected to a subscriber line contacts are added to the holding circuits for a transmission relay, and these contacts will connect a resistor in the holding circuit to a stop polarity. The aforementioned contacts are open when the converter circuit is in a dial condition.