JPS6422138A - Data transmission equipment - Google Patents

Data transmission equipment

Info

Publication number
JPS6422138A
JPS6422138A JP62177266A JP17726687A JPS6422138A JP S6422138 A JPS6422138 A JP S6422138A JP 62177266 A JP62177266 A JP 62177266A JP 17726687 A JP17726687 A JP 17726687A JP S6422138 A JPS6422138 A JP S6422138A
Authority
JP
Japan
Prior art keywords
circuit
bus
inputted
detected
output
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.)
Granted
Application number
JP62177266A
Other languages
Japanese (ja)
Other versions
JPH0659054B2 (en
Inventor
Taiji Tajima
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 JP62177266A priority Critical patent/JPH0659054B2/en
Publication of JPS6422138A publication Critical patent/JPS6422138A/en
Publication of JPH0659054B2 publication Critical patent/JPH0659054B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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  • Selective Calling Equipment (AREA)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To easily detect the releasing condition of a bus by comparing the output of a means to detect the primary side voltage of a pulse transformer circuit with transmission data supplied to the pulse transformer circuit. CONSTITUTION:Transmission data outputted from a CPU 59 are converted to serial data with a P S converting circuit 31, and thereafter, they are converted to an AMI signal with an AMI converting circuit 32 and supplied through drivers 33 and 34 to the primary side of a pulse transformer circuit 35. On the other hand, signals PA and PB to occur at both terminals of the primary winding of the circuit 35 are inputted to comparators 46 and 47, the outputs are inputted to an AND circuit 49 and the voltage at the primary side of the circuit 35 is detected. The output of the circuit 49 is inputted to a bus releasing detecting means 53 and compared with the output of the circuit 31. Here, when the secondary side (bus 1) of the circuit 35 is released, a back-swing voltage occurs at the signals PA and PB, the occurrence is detected by the means 53 and thus, the releasing condition of the bus is detected.
JP62177266A 1987-07-17 1987-07-17 Data transmission device Expired - Lifetime JPH0659054B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62177266A JPH0659054B2 (en) 1987-07-17 1987-07-17 Data transmission device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62177266A JPH0659054B2 (en) 1987-07-17 1987-07-17 Data transmission device

Publications (2)

Publication Number Publication Date
JPS6422138A true JPS6422138A (en) 1989-01-25
JPH0659054B2 JPH0659054B2 (en) 1994-08-03

Family

ID=16028054

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62177266A Expired - Lifetime JPH0659054B2 (en) 1987-07-17 1987-07-17 Data transmission device

Country Status (1)

Country Link
JP (1) JPH0659054B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH039812U (en) * 1989-06-20 1991-01-30
CN116073809A (en) * 2023-03-23 2023-05-05 杭州飞仕得科技股份有限公司 Pulse transformer signal bidirectional transmission device and protection method thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5978738A (en) 1997-02-13 1999-11-02 Anthony Brown Severe weather detector and alarm

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5691676A (en) * 1979-12-26 1981-07-24 Toshiba Corp Gate circuit of gate turn-off thyristor
JPS60169218A (en) * 1984-02-13 1985-09-02 Mitsubishi Electric Corp Extinguishing circuit of gate turn-off thyristor
JPS60185449A (en) * 1984-03-02 1985-09-20 Matsushita Electric Works Ltd Information transmitter
JPS60204144A (en) * 1984-03-29 1985-10-15 Nec Corp Fault detecting system in bus type communication system
JPS62136144A (en) * 1985-12-10 1987-06-19 Matsushita Electric Ind Co Ltd Home bus line acquisition and supervising system
JPS62146040A (en) * 1985-12-20 1987-06-30 Matsushita Electric Ind Co Ltd Pair cable network system for home bus system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5691676A (en) * 1979-12-26 1981-07-24 Toshiba Corp Gate circuit of gate turn-off thyristor
JPS60169218A (en) * 1984-02-13 1985-09-02 Mitsubishi Electric Corp Extinguishing circuit of gate turn-off thyristor
JPS60185449A (en) * 1984-03-02 1985-09-20 Matsushita Electric Works Ltd Information transmitter
JPS60204144A (en) * 1984-03-29 1985-10-15 Nec Corp Fault detecting system in bus type communication system
JPS62136144A (en) * 1985-12-10 1987-06-19 Matsushita Electric Ind Co Ltd Home bus line acquisition and supervising system
JPS62146040A (en) * 1985-12-20 1987-06-30 Matsushita Electric Ind Co Ltd Pair cable network system for home bus system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH039812U (en) * 1989-06-20 1991-01-30
CN116073809A (en) * 2023-03-23 2023-05-05 杭州飞仕得科技股份有限公司 Pulse transformer signal bidirectional transmission device and protection method thereof
CN116073809B (en) * 2023-03-23 2023-06-16 杭州飞仕得科技股份有限公司 Pulse transformer signal bidirectional transmission device and protection method thereof

Also Published As

Publication number Publication date
JPH0659054B2 (en) 1994-08-03

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