ES8202440A1 - Un detector dinamico de umbral - Google Patents
Un detector dinamico de umbralInfo
- Publication number
- ES8202440A1 ES8202440A1 ES499032A ES499032A ES8202440A1 ES 8202440 A1 ES8202440 A1 ES 8202440A1 ES 499032 A ES499032 A ES 499032A ES 499032 A ES499032 A ES 499032A ES 8202440 A1 ES8202440 A1 ES 8202440A1
- Authority
- ES
- Spain
- Prior art keywords
- detector
- diodes
- signal
- potentiometer
- threshold detector
- 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
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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Manipulation Of Pulses (AREA)
Abstract
CIRCUITO DE SEGUIMIENTO DINAMICO DEL PUNTO MEDIO DE LAS OSCILACIONES DE UNA SEÑAL ANALOGICA, CON REPRODUCCION BINARIA DE DICHAS VARIACION. COMPRENDE UN CIRCUITO DETECTOR DE CRESTA Y PARTIDOR (52), AL QUE SE APLICA, A TRAVES DEL AMPLIFICADOR (44) Y LAS RESISTENCIAS (42, 46, 50) LA SEÑAL ANALOGICA (20). LA TENSION DE SALIDA (58) ES EL VALOR DE PUNTO MEDIO DE LOS IMPULSOS POSITIVOS Y NEGATIVOS DE LA SEÑAL (20). DICHA TENSION SE APLICA AL AMPLIFICADOR COMPENSADOR (72), DE FACTOR DE AMPLIFICACION IGUAL A LA UNIDAD. LA TENSION (74) SE LLEVA, A TRAVES DE LA RESISTENCIA (78), A UN ATENUADOR (80) QUE DIVIDE LA AMPLITUD DE LA SEÑAL POR EL FACTOR DE AMPLIFICACION DEL AMPLIFICADOR (44).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12767380A | 1980-03-06 | 1980-03-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
ES8202440A1 true ES8202440A1 (es) | 1982-01-16 |
ES499032A0 ES499032A0 (es) | 1982-01-16 |
Family
ID=22431321
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES499032A Granted ES499032A0 (es) | 1980-03-06 | 1981-02-02 | Un detector dinamico de umbral |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0036950A1 (es) |
JP (1) | JPS56140468A (es) |
AU (1) | AU6569380A (es) |
DK (1) | DK86581A (es) |
ES (1) | ES499032A0 (es) |
PT (1) | PT72612B (es) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5810270A (ja) * | 1981-07-13 | 1983-01-20 | Mekano Kk | バ−コ−ドリ−ダ−読取り信号変換回路 |
GB2143636A (en) * | 1983-07-22 | 1985-02-13 | Stephen Kenneth Buss | A circuit arrangement and method for detecting markers in a microfilm scanner |
US6082621A (en) * | 1992-04-02 | 2000-07-04 | Symbol Technologies, Inc. | Interface between threshold processing digitizer for bar code reader |
US6164540A (en) | 1996-05-22 | 2000-12-26 | Symbol Technologies, Inc. | Optical scanners |
US5734152A (en) * | 1995-05-31 | 1998-03-31 | Symbol Technologies, Inc. | Optical scanners and signal processors therefor |
US6170749B1 (en) | 1995-05-31 | 2001-01-09 | Symbol Technologies, Inc. | Method of scanning indicia using selective sampling |
WO1994018641A1 (en) * | 1993-02-02 | 1994-08-18 | Label Vision Systems, Inc. | Method and apparatus for decoding bar code data from a video signal and applications thereof |
US5317166A (en) * | 1993-02-23 | 1994-05-31 | Psc Inc. | A system for decoding bar coded labels upon different size containers |
EP0677227A4 (en) * | 1993-09-02 | 1996-06-26 | Kiwisoft Programs Ltd | VIDEO CAMERA FOR RECORDING LABELED ARTICLES. |
US6525531B2 (en) | 1996-01-17 | 2003-02-25 | Allegro, Microsystems, Inc. | Detection of passing magnetic articles while adapting the detection threshold |
US5917320A (en) * | 1996-01-17 | 1999-06-29 | Allegro Microsystems, Inc. | Detection of passing magnetic articles while periodically adapting detection threshold |
US6297627B1 (en) | 1996-01-17 | 2001-10-02 | Allegro Microsystems, Inc. | Detection of passing magnetic articles with a peak-to-peak percentage threshold detector having a forcing circuit and automatic gain control |
US6242908B1 (en) | 1996-01-17 | 2001-06-05 | Allegro Microsystems, Inc. | Detection of passing magnetic articles while adapting the detection threshold |
AU6187998A (en) | 1997-03-07 | 1998-09-22 | Accu-Sort Systems, Inc. | Symbology scanning system for efficiently locating coded symbologies |
US6135354A (en) * | 1997-09-07 | 2000-10-24 | Label Vision Systems, Inc. | System and method for facilitating high speed processing of video signals containing images of barcode labels |
US6191576B1 (en) * | 1998-06-30 | 2001-02-20 | Honeywell Inc. | Method of operating or constructing a geartooth sensor |
DE19853084A1 (de) * | 1998-11-18 | 2000-05-25 | Schlafhorst & Co W | Verfahren und Vorrichtung zur berührungslosen Drehzahlmessung eines rotierenden Körpers |
US6373045B1 (en) | 1999-06-29 | 2002-04-16 | Infineon Technologies North America Corp. | High speed optocoupler detector |
US6914451B2 (en) | 2001-10-17 | 2005-07-05 | Optillion Operations Ab | Adaptive level binary logic |
US7506816B2 (en) * | 2004-10-04 | 2009-03-24 | Datalogic Scanning, Inc. | System and method for determining a threshold for edge detection based on an undifferentiated equalized scan line signal |
US7362094B2 (en) | 2006-01-17 | 2008-04-22 | Allegro Microsystems, Inc. | Methods and apparatus for magnetic article detection |
US8598867B2 (en) | 2010-06-04 | 2013-12-03 | Allegro Microsystems, Llc | Circuits and methods for generating a threshold signal used in a motion detector |
US9520871B2 (en) | 2012-01-05 | 2016-12-13 | Allegro Microsystems, Llc | Methods and apparatus for supply voltage transient protection for maintaining a state of a sensor output signal |
US8723512B1 (en) | 2012-11-26 | 2014-05-13 | Allegro Microsystems, Llc | Circuits and methods for generating a threshold signal used in a magnetic field sensor based on a peak signal associated with a prior cycle of a magnetic field signal |
JP6168762B2 (ja) * | 2012-12-14 | 2017-07-26 | キヤノン株式会社 | アブソリュートエンコーダ |
EP3611515B1 (en) | 2013-08-30 | 2022-06-01 | Allegro MicroSystems, LLC | Circuits and methods for generating a threshold signal used in a motion detector |
US9778326B2 (en) | 2014-03-11 | 2017-10-03 | Allegro Microsystems, Llc | Circuits and methods for limiting a smallest separation of thresholds in a magnetic field sensor |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3909594A (en) * | 1973-12-26 | 1975-09-30 | Interface Mechanisms Inc | Circuit for establishing a reference voltage in bar code readers |
-
1980
- 1980-12-23 AU AU65693/80A patent/AU6569380A/en not_active Abandoned
-
1981
- 1981-02-02 ES ES499032A patent/ES499032A0/es active Granted
- 1981-02-26 DK DK86581A patent/DK86581A/da unknown
- 1981-02-27 EP EP81101425A patent/EP0036950A1/en not_active Withdrawn
- 1981-03-04 JP JP3003381A patent/JPS56140468A/ja active Pending
- 1981-03-04 PT PT7261281A patent/PT72612B/pt unknown
Also Published As
Publication number | Publication date |
---|---|
JPS56140468A (en) | 1981-11-02 |
EP0036950A1 (en) | 1981-10-07 |
PT72612B (en) | 1982-03-18 |
AU6569380A (en) | 1981-09-10 |
DK86581A (da) | 1981-09-07 |
ES499032A0 (es) | 1982-01-16 |
PT72612A (en) | 1981-04-01 |
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