FR2186777A1 - - Google Patents
Info
- Publication number
- FR2186777A1 FR2186777A1 FR7319456A FR7319456A FR2186777A1 FR 2186777 A1 FR2186777 A1 FR 2186777A1 FR 7319456 A FR7319456 A FR 7319456A FR 7319456 A FR7319456 A FR 7319456A FR 2186777 A1 FR2186777 A1 FR 2186777A1
- Authority
- FR
- France
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3084—Automatic control in amplifiers having semiconductor devices in receivers or transmitters for electromagnetic waves other than radiowaves, e.g. lightwaves
-
- 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)
- General Physics & Mathematics (AREA)
- Toxicology (AREA)
- General Health & Medical Sciences (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Health & Medical Sciences (AREA)
- Theoretical Computer Science (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Control Of Amplification And Gain Control (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Facsimile Scanning Arrangements (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US25863272A | 1972-06-01 | 1972-06-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2186777A1 true FR2186777A1 (US20090182215A1-20090716-C00004.png) | 1974-01-11 |
| FR2186777B1 FR2186777B1 (US20090182215A1-20090716-C00004.png) | 1977-11-10 |
Family
ID=22981441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7319456A Expired FR2186777B1 (US20090182215A1-20090716-C00004.png) | 1972-06-01 | 1973-05-29 |
Country Status (8)
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3950640A (en) * | 1973-11-19 | 1976-04-13 | Xerox Corporation | Lamp control and lamp switch circuit for controlling light balance |
| US3944979A (en) * | 1974-12-23 | 1976-03-16 | Data Source Corporation | Method and apparatus for illuminating an object bearing indicia |
| US4133008A (en) * | 1977-03-14 | 1979-01-02 | Rapicom Inc. | Automatic illumination compensation circuit |
| US4266123A (en) * | 1978-11-20 | 1981-05-05 | Owen-Illinois, Inc. | Automatic scanner |
| DE2934560C2 (de) * | 1979-08-27 | 1982-03-25 | Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch | Schaltungsanordnung zur Regelung des Übertragungsfaktors eines fotoelektrischen Wandlers |
| US4516174A (en) * | 1980-03-10 | 1985-05-07 | Ricoh Company, Ltd. | Video signal regulating apparatus |
| US4965444A (en) * | 1988-08-17 | 1990-10-23 | Ransburg Corporation | Automatic gain control fiber optica-to-electrical transceiver |
| US7240250B2 (en) * | 2002-08-29 | 2007-07-03 | Seagate Technology Llc | Head degradation characterization for a data storage device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3437817A (en) * | 1966-04-25 | 1969-04-08 | Bausch & Lomb | Gain control circuit for photomultiplier tubes with a semi-conductor device connected across the last resistor of the divider |
| US3464022A (en) * | 1967-08-30 | 1969-08-26 | Mandrel Industries | Apparatus for controlling the gain of binary gain ranging amplifiers |
| US3525948A (en) * | 1966-03-25 | 1970-08-25 | Sds Data Systems Inc | Seismic amplifiers |
| US3568151A (en) * | 1966-03-23 | 1971-03-02 | Hitachi Ltd | Photoelectrical conversion system for pattern-recognizing apparatus and the like |
-
1972
- 1972-06-01 US US00258632A patent/US3796866A/en not_active Expired - Lifetime
-
1973
- 1973-05-11 CA CA171,005A patent/CA1018632A/en not_active Expired
- 1973-05-23 GB GB2453273A patent/GB1429267A/en not_active Expired
- 1973-05-29 FR FR7319456A patent/FR2186777B1/fr not_active Expired
- 1973-05-30 BE BE131779A patent/BE800335A/xx unknown
- 1973-06-01 CH CH795173A patent/CH578285A5/xx not_active IP Right Cessation
- 1973-06-01 DE DE2327802A patent/DE2327802C3/de not_active Expired
- 1973-06-01 JP JP48062454A patent/JPS4957752A/ja active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3568151A (en) * | 1966-03-23 | 1971-03-02 | Hitachi Ltd | Photoelectrical conversion system for pattern-recognizing apparatus and the like |
| US3525948A (en) * | 1966-03-25 | 1970-08-25 | Sds Data Systems Inc | Seismic amplifiers |
| US3437817A (en) * | 1966-04-25 | 1969-04-08 | Bausch & Lomb | Gain control circuit for photomultiplier tubes with a semi-conductor device connected across the last resistor of the divider |
| US3464022A (en) * | 1967-08-30 | 1969-08-26 | Mandrel Industries | Apparatus for controlling the gain of binary gain ranging amplifiers |
Non-Patent Citations (2)
| Title |
|---|
| ARTICLE : "DIGITAL APPROACH PROVIDES PRECISE, PROGRAMMABLE AGC" FARLEY * |
| REVUE US: "ELECTRONICS", VOLUME 44, NO 18, 30 AOUT 1971, PAGES 52 A 56 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2327802A1 (de) | 1973-12-13 |
| CH578285A5 (US20090182215A1-20090716-C00004.png) | 1976-07-30 |
| GB1429267A (en) | 1976-03-24 |
| US3796866A (en) | 1974-03-12 |
| DE2327802B2 (de) | 1977-10-13 |
| CA1018632A (en) | 1977-10-04 |
| BE800335A (fr) | 1973-09-17 |
| FR2186777B1 (US20090182215A1-20090716-C00004.png) | 1977-11-10 |
| JPS4957752A (US20090182215A1-20090716-C00004.png) | 1974-06-05 |
| DE2327802C3 (de) | 1978-06-01 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |