FR1540848A - Amplificateur à seuil variable - Google Patents

Amplificateur à seuil variable

Info

Publication number
FR1540848A
FR1540848A FR8747A FR06008747A FR1540848A FR 1540848 A FR1540848 A FR 1540848A FR 8747 A FR8747 A FR 8747A FR 06008747 A FR06008747 A FR 06008747A FR 1540848 A FR1540848 A FR 1540848A
Authority
FR
France
Prior art keywords
variable threshold
threshold amplifier
amplifier
variable
threshold
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
FR8747A
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of FR1540848A publication Critical patent/FR1540848A/fr
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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
    • 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
    • H03K5/02—Shaping pulses by amplifying
    • 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
    • H03K5/12—Shaping pulses by steepening leading or trailing edges

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • General Health & Medical Sciences (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Facsimile Heads (AREA)
  • Credit Cards Or The Like (AREA)
  • Amplifiers (AREA)
FR8747A 1966-12-14 1967-10-12 Amplificateur à seuil variable Expired FR1540848A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US60157866A 1966-12-14 1966-12-14

Publications (1)

Publication Number Publication Date
FR1540848A true FR1540848A (fr) 1968-09-27

Family

ID=24408030

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8747A Expired FR1540848A (fr) 1966-12-14 1967-10-12 Amplificateur à seuil variable

Country Status (8)

Country Link
US (1) US3461303A (fr)
BE (1) BE705436A (fr)
CH (1) CH467489A (fr)
ES (1) ES348150A1 (fr)
FR (1) FR1540848A (fr)
GB (1) GB1152287A (fr)
NL (1) NL6716277A (fr)
SE (1) SE354533B (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3628031A (en) * 1969-02-06 1971-12-14 Automata Corp Closed loop control system for automatic sensitivity control of transducer
US3560751A (en) * 1969-02-07 1971-02-02 Ibm Optical mark sensing device
US3655945A (en) * 1969-03-24 1972-04-11 Harwald C Inc Item scheduling system and apparatus therefor
DE2054961C3 (de) * 1970-11-09 1982-08-12 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Anordnung zur Abtastung von optisch feststellbaren Markierungen
US3660670A (en) * 1970-12-21 1972-05-02 Eastman Kodak Co Document detecting and counting apparatus
US3736410A (en) * 1971-12-06 1973-05-29 American Regitel Corp Hand held apparatus for sensing data bits carried on a sheet
US3761725A (en) * 1971-12-30 1973-09-25 Texas Instruments Inc Automatic tire identifier with threshold setting proportional to the received signals
US3761688A (en) * 1972-03-30 1973-09-25 Ncr High-speed card reader
US3899687A (en) * 1972-07-10 1975-08-12 Identicon Corp Optical label scanning
US3793471A (en) * 1972-12-08 1974-02-19 G Jones Reading aid for handicapped persons
DE2636906C3 (de) * 1976-08-17 1983-12-29 Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch Verfahren zur Erzeugung eines Schaltsignals beim Durchgang eines Kontrastsprunges und Schaltungsanordnung zur Ausführung des Verfahrens

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3039009A (en) * 1958-01-27 1962-06-12 Sperry Rand Corp Transistor amplifiers for pulse signals
US3189745A (en) * 1961-10-27 1965-06-15 Philco Corp Photo-electric sensing circuit
BE638814A (fr) * 1962-10-29
US3241082A (en) * 1963-02-25 1966-03-15 Transitron Electronic Corp Direct coupled amplifier with stabilized operating point
US3302034A (en) * 1963-04-24 1967-01-31 Gen Electric Pulse processing circuits having automatic threshold level control
US3375450A (en) * 1964-04-29 1968-03-26 Honeywell Regulator Co Peak detector with automatic noise level adjusting means

Also Published As

Publication number Publication date
SE354533B (fr) 1973-03-12
CH467489A (de) 1969-01-15
ES348150A1 (es) 1969-03-16
NL6716277A (fr) 1968-06-17
GB1152287A (en) 1969-05-14
BE705436A (fr) 1968-03-01
DE1549784B2 (de) 1972-12-21
DE1549784A1 (de) 1971-05-06
US3461303A (en) 1969-08-12

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