DE2643984C3 - - Google Patents
Info
- Publication number
- DE2643984C3 DE2643984C3 DE19762643984 DE2643984A DE2643984C3 DE 2643984 C3 DE2643984 C3 DE 2643984C3 DE 19762643984 DE19762643984 DE 19762643984 DE 2643984 A DE2643984 A DE 2643984A DE 2643984 C3 DE2643984 C3 DE 2643984C3
- Authority
- DE
- Germany
- Prior art keywords
- light
- output signal
- setpoint
- light receiver
- output
- 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
- 230000004888 barrier function Effects 0.000 claims description 14
- 230000005855 radiation Effects 0.000 claims description 11
- 230000032683 aging Effects 0.000 claims description 6
- 230000004044 response Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000011109 contamination Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere
- G01R31/2825—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere in household appliances or professional audio/video equipment
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/02—Control of operating function, e.g. switching from recording to reproducing
- G11B15/05—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container
- G11B15/06—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container by sensing auxiliary features on record carriers or containers, e.g. to stop machine near the end of a tape
- G11B15/08—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container by sensing auxiliary features on record carriers or containers, e.g. to stop machine near the end of a tape by photoelectric sensing
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/941—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated using an optical detector
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Geophysics And Detection Of Objects (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19762643984 DE2643984B2 (de) | 1976-09-29 | 1976-09-29 | Schaltungsanordnung zum Überwachen der Funktionsfähigkeit der Lichtschranken in einem Magnetbandgerät |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19762643984 DE2643984B2 (de) | 1976-09-29 | 1976-09-29 | Schaltungsanordnung zum Überwachen der Funktionsfähigkeit der Lichtschranken in einem Magnetbandgerät |
Publications (3)
Publication Number | Publication Date |
---|---|
DE2643984A1 DE2643984A1 (de) | 1978-03-30 |
DE2643984B2 DE2643984B2 (de) | 1978-10-19 |
DE2643984C3 true DE2643984C3 (enrdf_load_stackoverflow) | 1979-06-21 |
Family
ID=5989226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19762643984 Granted DE2643984B2 (de) | 1976-09-29 | 1976-09-29 | Schaltungsanordnung zum Überwachen der Funktionsfähigkeit der Lichtschranken in einem Magnetbandgerät |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2643984B2 (enrdf_load_stackoverflow) |
-
1976
- 1976-09-29 DE DE19762643984 patent/DE2643984B2/de active Granted
Also Published As
Publication number | Publication date |
---|---|
DE2643984B2 (de) | 1978-10-19 |
DE2643984A1 (de) | 1978-03-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OAP | Request for examination filed | ||
OD | Request for examination | ||
C3 | Grant after two publication steps (3rd publication) | ||
8339 | Ceased/non-payment of the annual fee |