JPS6422138A - Data transmission equipment - Google Patents
Data transmission equipmentInfo
- 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
Links
Landscapes
- 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.
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)
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)
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)
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 |
-
1987
- 1987-07-17 JP JP62177266A patent/JPH0659054B2/en not_active Expired - Lifetime
Patent Citations (6)
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)
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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