JPS55127633A - Data reception system - Google Patents

Data reception system

Info

Publication number
JPS55127633A
JPS55127633A JP3331379A JP3331379A JPS55127633A JP S55127633 A JPS55127633 A JP S55127633A JP 3331379 A JP3331379 A JP 3331379A JP 3331379 A JP3331379 A JP 3331379A JP S55127633 A JPS55127633 A JP S55127633A
Authority
JP
Japan
Prior art keywords
reception
error signal
data transmission
clock
time
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP3331379A
Other languages
Japanese (ja)
Inventor
Yoshiharu Kawabe
Shigeo Kobayashi
Seijiro Yamada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP3331379A priority Critical patent/JPS55127633A/en
Publication of JPS55127633A publication Critical patent/JPS55127633A/en
Pending legal-status Critical Current

Links

Landscapes

  • Debugging And Monitoring (AREA)
  • Communication Control (AREA)

Abstract

PURPOSE: To make it possible to relieve a load on a receptionn-side operator by allowing a reception-side unit to switch automatically a periodical clock corresponding to a data transmission rate when an error signal is generated for more than a certain time.
CONSTITUTION: To change the data reception states of a receiving circuit in an on- line data transmission system corresponding to a low data transmission rate, reception-side unit S ready to receive one clock generates an error signal on receiving the other data and time supervisory part 9 exercises a supervision over the generation time of the error signal. As a result, if the error signal has been generated for more than a certain time, supervisory part 9 sends a signal out to clock switching part 8 to switch one periodical clock that an alternation switch receives at that time to the other. Consequently, the reception side can attain automatic switching corresponding to the data transmission rate, relieving a load on a reception-side operator.
COPYRIGHT: (C)1980,JPO&Japio
JP3331379A 1979-03-23 1979-03-23 Data reception system Pending JPS55127633A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3331379A JPS55127633A (en) 1979-03-23 1979-03-23 Data reception system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3331379A JPS55127633A (en) 1979-03-23 1979-03-23 Data reception system

Publications (1)

Publication Number Publication Date
JPS55127633A true JPS55127633A (en) 1980-10-02

Family

ID=12383059

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3331379A Pending JPS55127633A (en) 1979-03-23 1979-03-23 Data reception system

Country Status (1)

Country Link
JP (1) JPS55127633A (en)

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