GB1417735A - Bivalent signalling processing methods and circuit arrangements - Google Patents

Bivalent signalling processing methods and circuit arrangements

Info

Publication number
GB1417735A
GB1417735A GB727773A GB727773A GB1417735A GB 1417735 A GB1417735 A GB 1417735A GB 727773 A GB727773 A GB 727773A GB 727773 A GB727773 A GB 727773A GB 1417735 A GB1417735 A GB 1417735A
Authority
GB
United Kingdom
Prior art keywords
level
peak
circuit
signal
mean
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.)
Expired
Application number
GB727773A
Other languages
English (en)
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.)
Nixdorf Computer AG
Original Assignee
Nixdorf Computer AG
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 Nixdorf Computer AG filed Critical Nixdorf Computer AG
Publication of GB1417735A publication Critical patent/GB1417735A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
    • G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
    • G06K7/10851—Circuits for pulse shaping, amplifying, eliminating noise signals, checking the function of the sensing device
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10037—A/D conversion, D/A conversion, sampling, slicing and digital quantisation or adjusting parameters thereof
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/01—Shaping pulses
    • H03K5/08—Shaping pulses by limiting; by thresholding; by slicing, i.e. combined limiting and thresholding
    • H03K5/082—Shaping pulses by limiting; by thresholding; by slicing, i.e. combined limiting and thresholding with an adaptive threshold
    • H03K5/084—Shaping pulses by limiting; by thresholding; by slicing, i.e. combined limiting and thresholding with an adaptive threshold modified by switching, e.g. by a periodic signal or by a signal in synchronism with the transitions of the output signal

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Signal Processing (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Nonlinear Science (AREA)
  • Toxicology (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Manipulation Of Pulses (AREA)
  • Dc Digital Transmission (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
GB727773A 1972-02-22 1973-02-14 Bivalent signalling processing methods and circuit arrangements Expired GB1417735A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722208310 DE2208310C3 (de) 1972-02-22 1972-02-22 Verfahren und Schaltungsanordnung zur Erzeugung einer Impulsfolge konstanter Impulsamplitude aus einer bivalenten Signalfolge veränderlicher Signalamplitude, der eine zeitlich veränderliche Gleichgröße überlagert ist

Publications (1)

Publication Number Publication Date
GB1417735A true GB1417735A (en) 1975-12-17

Family

ID=5836723

Family Applications (1)

Application Number Title Priority Date Filing Date
GB727773A Expired GB1417735A (en) 1972-02-22 1973-02-14 Bivalent signalling processing methods and circuit arrangements

Country Status (10)

Country Link
JP (1) JPS5340305B2 (enrdf_load_stackoverflow)
AT (1) AT329648B (enrdf_load_stackoverflow)
CA (1) CA991746A (enrdf_load_stackoverflow)
CH (1) CH568685A5 (enrdf_load_stackoverflow)
DE (1) DE2208310C3 (enrdf_load_stackoverflow)
FR (1) FR2182855B1 (enrdf_load_stackoverflow)
GB (1) GB1417735A (enrdf_load_stackoverflow)
IT (1) IT987015B (enrdf_load_stackoverflow)
NL (1) NL167062C (enrdf_load_stackoverflow)
SE (1) SE394779B (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2402987A1 (fr) * 1977-09-13 1979-04-06 United Kingdom Government Discriminateur d'image a seuil
GB2135856A (en) * 1982-12-24 1984-09-05 Victor Company Of Japan Digital signal reproducing apparatus
GB2251508A (en) * 1991-01-03 1992-07-08 Nat Res Dev Variable threshold apparatus

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3832577A (en) * 1973-06-22 1974-08-27 Ibm Threshold extraction circuitry for noisy electric waveforms
JPS51129131A (en) * 1975-05-01 1976-11-10 Omron Tateisi Electronics Co Analog-digital conversion circuit
JPS5818661B2 (ja) * 1975-05-20 1983-04-14 セイコーエプソン株式会社 タグヨミトリソウチ
JPS6013596B2 (ja) * 1977-08-19 1985-04-08 日本ビクター株式会社 テレビジヨン映像信号処理装置
US4222073A (en) * 1977-10-19 1980-09-09 Matsushita Electric Industrial Co., Ltd. Multiplexed information signal receiving system
JPS5585028A (en) * 1978-12-22 1980-06-26 Hitachi Ltd Mark detecting signal amplifier
EP0051343B1 (en) * 1980-11-03 1986-02-12 North American Philips Corporation Signal processing for digital optical disc players
JPS57171868A (en) * 1981-04-16 1982-10-22 Toshiba Corp Waveform shaping circuit
US4399474A (en) * 1981-08-10 1983-08-16 Ampex Corporation Automatic threshold tracking system
DE3203559C2 (de) * 1982-02-03 1984-04-19 Siemens AG, 1000 Berlin und 8000 München Verfahren und Schaltungsanordnung zum Umsetzen von analogen Abtastsignalen in binäre Rechtecksignale
JPS59257A (ja) * 1982-06-25 1984-01-05 Pioneer Electronic Corp デイジタル変調信号読取装置
JPS60157677A (ja) * 1984-01-27 1985-08-17 Usac Electronics Ind Co Ltd バ−コ−ドリ−ダ増幅回路方式
JPS6261176A (ja) * 1985-09-11 1987-03-17 Usac Electronics Ind Co Ltd バ−コ−ド読取装置の浮動スライス方式

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1537116B2 (de) * 1967-08-30 1973-08-09 Robert Bosch Fernsehanlagen Gmbh, 6100 Darmstadt Schaltungsanordnung zur pegelunabhaengigen regenerierung einer maeanderfoermigen impulsfolge
US3593334A (en) * 1968-11-29 1971-07-13 Burroughs Corp Pulse discrimination system
DE1958755C3 (de) * 1969-11-22 1984-07-19 ANT Nachrichtentechnik GmbH, 7150 Backnang Schwellwertschalter mit in Abhängigkeit von der Amplitude der Eingangssignale steuerbarer Ansprechschwelle
DE2037464A1 (de) * 1970-07-28 1972-02-10 Siemens Ag Schaltungsanordnung zur Bewertung von Impulsen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2402987A1 (fr) * 1977-09-13 1979-04-06 United Kingdom Government Discriminateur d'image a seuil
GB2135856A (en) * 1982-12-24 1984-09-05 Victor Company Of Japan Digital signal reproducing apparatus
US4528601A (en) * 1982-12-24 1985-07-09 Victor Company Of Japan, Ltd. Digital signal reproducing apparatus
GB2251508A (en) * 1991-01-03 1992-07-08 Nat Res Dev Variable threshold apparatus

Also Published As

Publication number Publication date
NL167062C (nl) 1981-10-15
NL167062B (nl) 1981-05-15
IT987015B (it) 1975-02-20
ATA154173A (de) 1975-08-15
FR2182855A1 (enrdf_load_stackoverflow) 1973-12-14
DE2208310A1 (de) 1973-09-13
DE2208310C3 (de) 1982-07-29
AT329648B (de) 1976-05-25
CA991746A (en) 1976-06-22
FR2182855B1 (enrdf_load_stackoverflow) 1976-04-30
CH568685A5 (enrdf_load_stackoverflow) 1975-10-31
SE394779B (sv) 1977-07-04
NL7302472A (enrdf_load_stackoverflow) 1973-08-24
DE2208310B2 (de) 1974-02-14
JPS4898724A (enrdf_load_stackoverflow) 1973-12-14
JPS5340305B2 (enrdf_load_stackoverflow) 1978-10-26

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee