CA991746A - Signalling processing methods and circuit arrangements - Google Patents

Signalling processing methods and circuit arrangements

Info

Publication number
CA991746A
CA991746A CA164,020A CA164020A CA991746A CA 991746 A CA991746 A CA 991746A CA 164020 A CA164020 A CA 164020A CA 991746 A CA991746 A CA 991746A
Authority
CA
Canada
Prior art keywords
processing methods
circuit arrangements
signalling processing
signalling
arrangements
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
CA164,020A
Other languages
English (en)
Other versions
CA164020S (en
Inventor
Norbert Wefers
Uwe Unglaube
Uwe Militz
Joachim Schwarzkopf
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
Application granted granted Critical
Publication of CA991746A publication Critical patent/CA991746A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
CA164,020A 1972-02-22 1973-02-19 Signalling processing methods and circuit arrangements Expired CA991746A (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
CA991746A true CA991746A (en) 1976-06-22

Family

ID=5836723

Family Applications (1)

Application Number Title Priority Date Filing Date
CA164,020A Expired CA991746A (en) 1972-02-22 1973-02-19 Signalling processing methods and circuit arrangements

Country Status (10)

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

Families Citing this family (16)

* 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
CA1122697A (en) * 1977-09-13 1982-04-27 Tom W. Ridler Image discriminators
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
JPS59117718A (ja) * 1982-12-24 1984-07-07 Victor Co Of Japan Ltd デイジタル信号の再生装置
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
GB2251508A (en) * 1991-01-03 1992-07-08 Nat Res Dev Variable threshold apparatus

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

Also Published As

Publication number Publication date
FR2182855A1 (xx) 1973-12-14
NL167062C (nl) 1981-10-15
AT329648B (de) 1976-05-25
GB1417735A (en) 1975-12-17
NL7302472A (xx) 1973-08-24
FR2182855B1 (xx) 1976-04-30
DE2208310A1 (de) 1973-09-13
JPS4898724A (xx) 1973-12-14
JPS5340305B2 (xx) 1978-10-26
SE394779B (sv) 1977-07-04
NL167062B (nl) 1981-05-15
CH568685A5 (xx) 1975-10-31
IT987015B (it) 1975-02-20
DE2208310C3 (de) 1982-07-29
ATA154173A (de) 1975-08-15
DE2208310B2 (de) 1974-02-14

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