JPS55958A - Chatter absorption system - Google Patents

Chatter absorption system

Info

Publication number
JPS55958A
JPS55958A JP7440478A JP7440478A JPS55958A JP S55958 A JPS55958 A JP S55958A JP 7440478 A JP7440478 A JP 7440478A JP 7440478 A JP7440478 A JP 7440478A JP S55958 A JPS55958 A JP S55958A
Authority
JP
Japan
Prior art keywords
key
output
time
circuit
chatter
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
JP7440478A
Other languages
Japanese (ja)
Inventor
Hiroshi Funashige
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP7440478A priority Critical patent/JPS55958A/en
Publication of JPS55958A publication Critical patent/JPS55958A/en
Pending legal-status Critical Current

Links

Landscapes

  • Input From Keyboards Or The Like (AREA)

Abstract

PURPOSE: To reduce the cost by providing only one chatter absorption circuit in common, by making connections of several key contacts so that even when any one of several keys in operated, the contact output can be extracted in common besides that of each key.
CONSTITUTION: keys A1 to An in operation board 1, early break/make keys, are in the non-lock mode and one circuit has two contacts. Those contacts are made mutually via lines (a22) and (an1). With key A2 depressed at time T1, for instance, a changeover from level L to H occurs causing chattering on line (a11). Line (a22) changes from H to L at time T2 causing chattering. A signal appearing at output (b1) of AND B changes from H to L similarly and output C1 of chatter absorption circuit C changes from L to H at T2. Since chattering is stabilized, a pulse of width (t1) appears at output (d) of sample pulse generating circuit 23 actuated by C1 after time (t0) and an A2-key signal is inputted to key input circuit 22 by the contact output on line (a22). With key A2 OFF at time T3, C1 is held at level L at T4.
COPYRIGHT: (C)1980,JPO&Japio
JP7440478A 1978-06-19 1978-06-19 Chatter absorption system Pending JPS55958A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7440478A JPS55958A (en) 1978-06-19 1978-06-19 Chatter absorption system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7440478A JPS55958A (en) 1978-06-19 1978-06-19 Chatter absorption system

Publications (1)

Publication Number Publication Date
JPS55958A true JPS55958A (en) 1980-01-07

Family

ID=13546207

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7440478A Pending JPS55958A (en) 1978-06-19 1978-06-19 Chatter absorption system

Country Status (1)

Country Link
JP (1) JPS55958A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS596232U (en) * 1982-06-30 1984-01-14 株式会社島津製作所 switch input device
JPS6194497A (en) * 1984-10-17 1986-05-13 Pioneer Electronic Corp Diaphragm for speaker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS596232U (en) * 1982-06-30 1984-01-14 株式会社島津製作所 switch input device
JPS6194497A (en) * 1984-10-17 1986-05-13 Pioneer Electronic Corp Diaphragm for speaker

Similar Documents

Publication Publication Date Title
JPS55958A (en) Chatter absorption system
JPS5334243A (en) Device for diagnosing malfunction of elevator control unit
JPS55121517A (en) Sound announciator
JPS5698033A (en) Switching system of standby transmission line
JPS5537924A (en) Integrated circuit
JPS5347722A (en) Key input circuit
JPS535532A (en) Input mode switching system
JPS533122A (en) Input unit
JPS54107629A (en) Key input unit
JPS57209536A (en) Scroll controller
JPS57150221A (en) On and off detecting circuit of switch
JPS5285454A (en) Key input circuit
JPS5547739A (en) Input circuit
JPS5475222A (en) Book mat-system keyboard
JPS57100526A (en) Key input controlling system
JPS55123735A (en) Electronic desk calculator
JPS56110124A (en) Data terminal device
JPS5614332A (en) Multiitem input keyboard
JPS5762412A (en) Output unit of programmable logic controller
JPS533733A (en) Test unit of keyboard encoder
JPS5693434A (en) Counter
JPS52104909A (en) Electronic musical instrument
JPS5481019A (en) Delay signal pick up unit
JPS5468136A (en) Inspection unit for logic circuit
JPS56144327A (en) Burner automatic controlling device