JPS54160142A - Interface system - Google Patents

Interface system

Info

Publication number
JPS54160142A
JPS54160142A JP6882378A JP6882378A JPS54160142A JP S54160142 A JPS54160142 A JP S54160142A JP 6882378 A JP6882378 A JP 6882378A JP 6882378 A JP6882378 A JP 6882378A JP S54160142 A JPS54160142 A JP S54160142A
Authority
JP
Japan
Prior art keywords
unit
driver
units
signals
capacity
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
JP6882378A
Other languages
Japanese (ja)
Inventor
Tadayuki Ichiba
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 JP6882378A priority Critical patent/JPS54160142A/en
Publication of JPS54160142A publication Critical patent/JPS54160142A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To eliminate the limitation for the driver capacity in case the physical gap is increased between the units by actuating the receiver circuit as well as the driver of the interface part by the 2nd unit and via the power voltage supplied from the 1st unit.
CONSTITUTION: The 1st unit supplies power voltage 31 to the 2nd unit along with the signals, and the 2nd unit amplifies the signals given from the 1st unit to then transfer them to the lower-rank unit. At the same time, the 2nd unit repeats once the signals to be given to the 1st unit and then transfer them to the 1st unit. In this system, the 1st unit supports the power capacity of the circuits for driver 35, 43, 44, 37, 39 and 41 plus receiver 34, 42, 36 and 40 each at the interface part of the 2nd unit, and does not support the power capacity of the entire 2nd unit. Accordingly, a comparatively small amount of power capacity suffices for the 1st unit itself. This system is not applied to all 2nd units but applied in terms of the key, and thus the cable length can be increased between the units.
COPYRIGHT: (C)1979,JPO&Japio
JP6882378A 1978-06-09 1978-06-09 Interface system Pending JPS54160142A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6882378A JPS54160142A (en) 1978-06-09 1978-06-09 Interface system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6882378A JPS54160142A (en) 1978-06-09 1978-06-09 Interface system

Publications (1)

Publication Number Publication Date
JPS54160142A true JPS54160142A (en) 1979-12-18

Family

ID=13384808

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6882378A Pending JPS54160142A (en) 1978-06-09 1978-06-09 Interface system

Country Status (1)

Country Link
JP (1) JPS54160142A (en)

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