BR7905873A - Leitora optica de limiar adaptativo e leitora de cartoes optica adaptativa - Google Patents
Leitora optica de limiar adaptativo e leitora de cartoes optica adaptativaInfo
- Publication number
- BR7905873A BR7905873A BR7905873A BR7905873A BR7905873A BR 7905873 A BR7905873 A BR 7905873A BR 7905873 A BR7905873 A BR 7905873A BR 7905873 A BR7905873 A BR 7905873A BR 7905873 A BR7905873 A BR 7905873A
- Authority
- BR
- Brazil
- Prior art keywords
- adaptive
- reader
- optical card
- optional threshold
- card reader
- Prior art date
Links
- 230000003044 adaptive effect Effects 0.000 title 2
- 230000003287 optical effect Effects 0.000 title 1
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
- 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
- G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (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)
- Optical Recording Or Reproduction (AREA)
- Credit Cards Or The Like (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US94320178A | 1978-09-18 | 1978-09-18 | |
US06/036,686 US4230265A (en) | 1979-05-07 | 1979-05-07 | Adaptive threshold optical reader |
Publications (1)
Publication Number | Publication Date |
---|---|
BR7905873A true BR7905873A (pt) | 1980-05-27 |
Family
ID=26713392
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR7905873A BR7905873A (pt) | 1978-09-18 | 1979-09-14 | Leitora optica de limiar adaptativo e leitora de cartoes optica adaptativa |
Country Status (11)
Country | Link |
---|---|
AU (1) | AU528801B2 (pt) |
BR (1) | BR7905873A (pt) |
CA (1) | CA1129549A (pt) |
CH (1) | CH632098A5 (pt) |
DE (1) | DE2937315A1 (pt) |
FR (1) | FR2436448B1 (pt) |
GB (1) | GB2031630B (pt) |
HK (1) | HK6783A (pt) |
IT (1) | IT1120575B (pt) |
NL (1) | NL7906448A (pt) |
PH (1) | PH19179A (pt) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU592930B2 (en) * | 1987-02-12 | 1990-01-25 | Dai Nippon Insatsu Kabushiki Kaisha | Method for recording and reproducing data for an optical card |
FR2650416B1 (fr) * | 1989-07-28 | 1995-04-21 | Adventure | Systeme de transmission d'informations, objet portatif et lecteur utilisables dans un tel systeme |
EP1026619A3 (en) * | 1999-02-04 | 2001-09-19 | Matsushita Electronics Corporation | Optical information reader and optical information reading system |
JP2005072924A (ja) | 2003-08-25 | 2005-03-17 | Nec Kansai Ltd | 光電流・電圧変換回路 |
JP2005072925A (ja) | 2003-08-25 | 2005-03-17 | Nec Kansai Ltd | 光電流・電圧変換回路 |
DE102004024038A1 (de) * | 2004-05-10 | 2005-12-01 | Gardena Manufacturing Gmbh | Programmiereinrichtung und Lesegerät für Bewässerungseinrichtungen |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2100346A5 (pt) * | 1970-07-14 | 1972-03-17 | Honeywell Inf Systems Italia | |
DE2153910C3 (de) * | 1971-10-29 | 1974-10-17 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Anordnung zum Auswerten des Ausgangssignals einer optischen Meßeinrichtung |
US3789215A (en) * | 1972-09-08 | 1974-01-29 | Ibm | Photosensitive document detector with automatic compensation |
US3872434A (en) * | 1973-12-05 | 1975-03-18 | Recognition Equipment Inc | Dynamic sample-by-sample automatic gain control |
-
1979
- 1979-08-22 CA CA334,234A patent/CA1129549A/en not_active Expired
- 1979-08-24 AU AU50270/79A patent/AU528801B2/en not_active Ceased
- 1979-08-27 PH PH22962A patent/PH19179A/en unknown
- 1979-08-28 NL NL7906448A patent/NL7906448A/nl unknown
- 1979-08-30 GB GB7930069A patent/GB2031630B/en not_active Expired
- 1979-09-13 CH CH830279A patent/CH632098A5/fr not_active IP Right Cessation
- 1979-09-14 BR BR7905873A patent/BR7905873A/pt unknown
- 1979-09-14 IT IT50262/79A patent/IT1120575B/it active
- 1979-09-14 DE DE19792937315 patent/DE2937315A1/de not_active Ceased
- 1979-09-17 FR FR7923108A patent/FR2436448B1/fr not_active Expired
-
1983
- 1983-02-24 HK HK67/83A patent/HK6783A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
AU5027079A (en) | 1980-03-27 |
IT1120575B (it) | 1986-03-26 |
DE2937315A1 (de) | 1980-03-27 |
AU528801B2 (en) | 1983-05-12 |
GB2031630B (en) | 1982-06-23 |
FR2436448B1 (fr) | 1986-10-17 |
IT7950262A0 (it) | 1979-09-14 |
CH632098A5 (fr) | 1982-09-15 |
PH19179A (en) | 1986-01-23 |
NL7906448A (nl) | 1980-03-20 |
CA1129549A (en) | 1982-08-10 |
HK6783A (en) | 1983-02-24 |
FR2436448A1 (fr) | 1980-04-11 |
GB2031630A (en) | 1980-04-23 |
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