JPS52113617A - Signal variation point detection - Google Patents

Signal variation point detection

Info

Publication number
JPS52113617A
JPS52113617A JP2930276A JP2930276A JPS52113617A JP S52113617 A JPS52113617 A JP S52113617A JP 2930276 A JP2930276 A JP 2930276A JP 2930276 A JP2930276 A JP 2930276A JP S52113617 A JPS52113617 A JP S52113617A
Authority
JP
Japan
Prior art keywords
signal
point detection
signal variation
variation point
half tone
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
JP2930276A
Other languages
Japanese (ja)
Inventor
Yoshio Horiuchi
Yutaka Suzuki
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 Telegraph and Telephone Corp
Original Assignee
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP2930276A priority Critical patent/JPS52113617A/en
Publication of JPS52113617A publication Critical patent/JPS52113617A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To convert a monopolarity signal having a half tone such as a facsimile signal to a multipolarity signal and so arrange that while a minor level signal is detected, a differential responese of a half tone signal may diminish proportional to its lessening density gradient, thus avoiding unnecessary detection.
COPYRIGHT: (C)1977,JPO&Japio
JP2930276A 1976-03-19 1976-03-19 Signal variation point detection Pending JPS52113617A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2930276A JPS52113617A (en) 1976-03-19 1976-03-19 Signal variation point detection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2930276A JPS52113617A (en) 1976-03-19 1976-03-19 Signal variation point detection

Publications (1)

Publication Number Publication Date
JPS52113617A true JPS52113617A (en) 1977-09-22

Family

ID=12272418

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2930276A Pending JPS52113617A (en) 1976-03-19 1976-03-19 Signal variation point detection

Country Status (1)

Country Link
JP (1) JPS52113617A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5411624A (en) * 1977-06-27 1979-01-27 Ricoh Co Ltd Processing system for video signal
JPS554152A (en) * 1978-06-27 1980-01-12 Nec Corp Detection system for signal change point
JPS56129479A (en) * 1980-03-14 1981-10-09 Matsushita Electric Ind Co Ltd Detector for changing point

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5411624A (en) * 1977-06-27 1979-01-27 Ricoh Co Ltd Processing system for video signal
JPS5829911B2 (en) * 1977-06-27 1983-06-25 株式会社リコー Video signal processing method
JPS554152A (en) * 1978-06-27 1980-01-12 Nec Corp Detection system for signal change point
JPS56129479A (en) * 1980-03-14 1981-10-09 Matsushita Electric Ind Co Ltd Detector for changing point
JPS6258588B2 (en) * 1980-03-14 1987-12-07 Matsushita Electric Ind Co Ltd

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