JPS5634117A - Detection system of error position - Google Patents

Detection system of error position

Info

Publication number
JPS5634117A
JPS5634117A JP10948179A JP10948179A JPS5634117A JP S5634117 A JPS5634117 A JP S5634117A JP 10948179 A JP10948179 A JP 10948179A JP 10948179 A JP10948179 A JP 10948179A JP S5634117 A JPS5634117 A JP S5634117A
Authority
JP
Japan
Prior art keywords
polarity
output
information
reset
error
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
JP10948179A
Other languages
Japanese (ja)
Inventor
Tadashi Hirono
Kazutoshi Nishimura
Takashi Oka
Hisashi Kimura
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.)
Fujitsu Ltd
Hitachi Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Fujitsu Ltd
Hitachi Ltd
Nippon Telegraph and Telephone 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 Fujitsu Ltd, Hitachi Ltd, Nippon Telegraph and Telephone Corp filed Critical Fujitsu Ltd
Priority to JP10948179A priority Critical patent/JPS5634117A/en
Publication of JPS5634117A publication Critical patent/JPS5634117A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To enable to increase the precision of pointer through accurate detection of data position in error, by using the information relating to the polarity of reproduction signal or combining it with the information relating to the level.
CONSTITUTION: In the digital magnetic recorder such as magnetic tape, when the input signal is of positive or negative polarity, the comparators 9, 10 output the signal waveforms 3, 4 by the width of period corresponded respectively. The output is latched to the flip-flops (FF)11, 13 in synchronizing with the respective clock to set the information of the polarity, and this information is set to FF12, 14 at the next clock and simultaneously FF11, 13 are reset. Thus, when the polarity of waveform is alternately appeared, FF11, 13 and FF12, 14 are alternately set or reset, and when both are all in set state, the error output 22 is picked up from the OR gate 17.
COPYRIGHT: (C)1981,JPO&Japio
JP10948179A 1979-08-28 1979-08-28 Detection system of error position Pending JPS5634117A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10948179A JPS5634117A (en) 1979-08-28 1979-08-28 Detection system of error position

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10948179A JPS5634117A (en) 1979-08-28 1979-08-28 Detection system of error position

Publications (1)

Publication Number Publication Date
JPS5634117A true JPS5634117A (en) 1981-04-06

Family

ID=14511329

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10948179A Pending JPS5634117A (en) 1979-08-28 1979-08-28 Detection system of error position

Country Status (1)

Country Link
JP (1) JPS5634117A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57208613A (en) * 1981-06-15 1982-12-21 Nippon Denso Co Ltd Magnetic recorder and reproducer
JPS6113478A (en) * 1984-06-29 1986-01-21 Nippon Hoso Kyokai <Nhk> Discrimination system for digital signal level

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49202A (en) * 1972-04-18 1974-01-05

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49202A (en) * 1972-04-18 1974-01-05

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57208613A (en) * 1981-06-15 1982-12-21 Nippon Denso Co Ltd Magnetic recorder and reproducer
JPH0458671B2 (en) * 1981-06-15 1992-09-18 Nippon Denso Co
JPS6113478A (en) * 1984-06-29 1986-01-21 Nippon Hoso Kyokai <Nhk> Discrimination system for digital signal level

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