JPS63304749A - Interface circuit - Google Patents

Interface circuit

Info

Publication number
JPS63304749A
JPS63304749A JP62140978A JP14097887A JPS63304749A JP S63304749 A JPS63304749 A JP S63304749A JP 62140978 A JP62140978 A JP 62140978A JP 14097887 A JP14097887 A JP 14097887A JP S63304749 A JPS63304749 A JP S63304749A
Authority
JP
Japan
Prior art keywords
signal
circuit
circuits
generates
terminal equipment
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
JP62140978A
Other languages
Japanese (ja)
Inventor
Ryuichi Shiobara
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.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
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 Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP62140978A priority Critical patent/JPS63304749A/en
Publication of JPS63304749A publication Critical patent/JPS63304749A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To make the tiled circuit usable for a terminal equipment by devising the circuit such that an ON signal is generated when circuits A and B are not connected and a signal according to a signal of the circuit B is generated when the circuits A and B are connected.
CONSTITUTION: The titled circuit generates an OFF signal when the output signal line of the circuit B is not active, generates an ON signal when the circuits A and B are not connected as to a signal line giving an ON signal at the active state and generates a signal according to the circuit B when the circuits A and B are connected. Thus, even if a specific control line has no output from an opposite equipment (MODEM), the corresponding signal line shows an open input to an interface circuit at the terminal equipment and the ON signal is to be received. As a result, in receiving the OFF signal, even when the processing sequence of the terminal equipment is designed to stop or interrupt the processing, since the control line receives no OFF signal, the processing is able to be initiated or continued.
COPYRIGHT: (C)1988,JPO&Japio
JP62140978A 1987-06-05 1987-06-05 Interface circuit Pending JPS63304749A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62140978A JPS63304749A (en) 1987-06-05 1987-06-05 Interface circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62140978A JPS63304749A (en) 1987-06-05 1987-06-05 Interface circuit

Publications (1)

Publication Number Publication Date
JPS63304749A true JPS63304749A (en) 1988-12-13

Family

ID=15281277

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62140978A Pending JPS63304749A (en) 1987-06-05 1987-06-05 Interface circuit

Country Status (1)

Country Link
JP (1) JPS63304749A (en)

Similar Documents

Publication Publication Date Title
JPS6310913A (en) Noise elimination circuit
JPS63304749A (en) Interface circuit
JPS63304748A (en) Interface circuit
JPH04317222A (en) Signal processor
JPH02122725A (en) Semiconductor device
JPH02121049A (en) Input/output device
JPH0391038A (en) Integrated circuit
JPS63190500A (en) Acoustic reproducer
JPS62180682A (en) Switching circuit
JPS62134714A (en) Interface circuit
JPH04163934A (en) Semiconductor device
JPH02222016A (en) Controller for plural control circuits
JPH01109406A (en) Method for increasing input point number of robot
JPS62251677A (en) Disconnection detecting circuit for operational amplifier feeder
JPH01205346A (en) Semiconductor integrated circuit
JPS62176321A (en) Input noise shutting off system
JPH03101308A (en) Pulse signal switching circuit
JPS61128624A (en) Reset circuit
JPH03197883A (en) Semiconductor integrated circuit
JPH04119414A (en) Input/output circuit
JPH0251963A (en) Communication terminal equipment
JPS63257352A (en) Signal circuit switching device
JPH01182995A (en) Cmos semiconductor integrated circuit
JPH0273446A (en) Interface switching circuit
JPH02177689A (en) Filter control circuit