JPS5557972A - Detection circuit for skip read - Google Patents

Detection circuit for skip read

Info

Publication number
JPS5557972A
JPS5557972A JP13103778A JP13103778A JPS5557972A JP S5557972 A JPS5557972 A JP S5557972A JP 13103778 A JP13103778 A JP 13103778A JP 13103778 A JP13103778 A JP 13103778A JP S5557972 A JPS5557972 A JP S5557972A
Authority
JP
Japan
Prior art keywords
read
skip
becomes
information
signal
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
JP13103778A
Other languages
Japanese (ja)
Other versions
JPS6329305B2 (en
Inventor
Ichiro Urano
Yozo Yokomizo
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.)
NIPPON DENKI FIELD SERVICE
NIPPON DENKI FUIIRUDO SERVICE KK
NEC Corp
Original Assignee
NIPPON DENKI FIELD SERVICE
NIPPON DENKI FUIIRUDO SERVICE KK
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 NIPPON DENKI FIELD SERVICE, NIPPON DENKI FUIIRUDO SERVICE KK, NEC Corp, Nippon Electric Co Ltd filed Critical NIPPON DENKI FIELD SERVICE
Priority to JP13103778A priority Critical patent/JPS5557972A/en
Publication of JPS5557972A publication Critical patent/JPS5557972A/en
Publication of JPS6329305B2 publication Critical patent/JPS6329305B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Manipulation Of Pulses (AREA)

Abstract

PURPOSE: To make it possible to detect a skip read of information definitely by supervising that when information is detected, the logical product of an information signal and sampling signal becomes "1".
CONSTITUTION: Flip-flop FF5 functions to make sure of the existence of information detected by a reading element, FF6 functions to detect the existence of an information skip read, and FF7 functions to store a state detected by FF6. When the reading element detects data signal A1 in a read section and corresponding sampling signal B1 is generated, the logical product of signals A1 and B1 becomes "1" because a normal read and while FF7 is not set, skip-read detection signal (l) becomes "0". If a skip read is done, FF7 is set because the logical produce of the both does not becomes "1", and skip-read detection signal (l) becomes "1".
COPYRIGHT: (C)1980,JPO&Japio
JP13103778A 1978-10-26 1978-10-26 Detection circuit for skip read Granted JPS5557972A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13103778A JPS5557972A (en) 1978-10-26 1978-10-26 Detection circuit for skip read

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13103778A JPS5557972A (en) 1978-10-26 1978-10-26 Detection circuit for skip read

Publications (2)

Publication Number Publication Date
JPS5557972A true JPS5557972A (en) 1980-04-30
JPS6329305B2 JPS6329305B2 (en) 1988-06-13

Family

ID=15048539

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13103778A Granted JPS5557972A (en) 1978-10-26 1978-10-26 Detection circuit for skip read

Country Status (1)

Country Link
JP (1) JPS5557972A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57169875A (en) * 1981-04-10 1982-10-19 Tokyo Juki Ind Co Ltd Card reader

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4965809A (en) * 1972-10-24 1974-06-26

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4965809A (en) * 1972-10-24 1974-06-26

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57169875A (en) * 1981-04-10 1982-10-19 Tokyo Juki Ind Co Ltd Card reader
JPS6227432B2 (en) * 1981-04-10 1987-06-15 Tokyo Juki Industrial Co Ltd

Also Published As

Publication number Publication date
JPS6329305B2 (en) 1988-06-13

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