公开(公告)号：US3879577A

公开(公告)日：1975-04-22

申请号：US39969573

申请日：1973-09-24

Applicant: LICENTIA GMBH

Inventor： PROGLER MAX

IPC: H04L1/16 ,  H04L1/18 ,  G08C25/00 ,  G06F11/00 ,  H04L1/10

CPC classification number: H04L1/1845 ,  H04L1/16 ,  H04L1/1809 ,  H04L1/1838 ,  H04L1/1874

Abstract: In a data transmission system in which blocks of binary data are transmitted over a transmission channel from a data source in a transmitter to a data user in a receiver, with each block being tested in the receiver and each incorrectly received block giving rise to an ''''error'''' receipt signal which is delivered to the transmitter over a return channel, retransmission of an incorrectly received block is effectuated by storing each transmitted block in the transmitter and delaying each received block in the receiver for a time equal to the period which elapses between transmission of a block and arrival at the transmitter of the receipt signal for that block, normally supplying each received block to the user after such delay, retransmitting each received block resulting in an error receipt signal upon arrival of such signal at the transmitter, and delivering each retransmitting block directly to the user without such delay if such retransmitted block does not give rise to another error receipt signal. Only those blocks which create an error receipt signal are retransmitted by the transmitter.

Abstract translation: 在其中二进制数据块通过传输信道从发射机中的数据源发送到接收机中的数据用户的数据传输系统中，其中每个块在接收机中被测试，并且每个错误接收的块产生“ 错误“接收信号，其通过返回信道传送到发射机，通过将发送的每个块存储在发射机中并将接收机中的每个接收的块延迟一段时间等于传输之间的时间来实现不正确接收的块的重传 并且到达该块的接收信号的发射机，通常在这样的延迟之后向用户提供每个接收到的块，重传每个接收到的块，从而在这种信号到达发射机时导致错误接收信号，并且传送每个 如果这样的重传块不会引起另一个错误r，则直接向用户重传块而没有这样的延迟 eceipt信号。 只有那些创建错误接收信号的块才被发送器重传。

公开(公告)号：US3638183A

公开(公告)日：1972-01-25

申请号：US3638183D

申请日：1970-03-09

Applicant: LICENTIA GMBH

Inventor： PROGLER MAX ,  WESSENBERG KLAUS ,  WAGNER WINFRIED ,  OHNSORGE HORST

IPC: H04L1/20 ,  H04L25/06 ,  G08C25/00

CPC classification number: H04L25/061 ,  H04L1/20

Abstract: A threshold value circuit for a data transmission system in which at the receiver site the transmitted demodulated binary signals are fed to the threshold value circuit to produce an indication regarding errors in the character bits of the received character. The threshold circuit includes a pair of parallelly connected circuit paths having one end thereof connected to the source of signals and the other ends thereof connected to a comparator. One circuit path has a transfer function whose value is less than 1 while the other circuit path contains circuitry for storing and delaying the peak value of the received signal to provide a threshold level signal for the comparator; the value of the threshold level changing in accordance with changes in the level of the received signal which persists for a given time period.

Abstract translation: 一种用于数据传输系统的阈值电路，其中在接收器站处将传输的解调的二进制信号馈送到阈值电路以产生关于接收到的字符的字符位中的错误的指示。 阈值电路包括一对并联的电路，其一端连接到信号源，其另一端连接到比较器。 一个电路路径具有值小于1的传递函数，而另一个电路路径包含用于存储和延迟接收信号的峰值以提供比较器的阈值电平信号的电路; 阈值电平的值根据持续给定时间段的接收信号电平的变化而变化。