ES438292A1 - Defect detection and compensation system - Google Patents
Defect detection and compensation systemInfo
- Publication number
- ES438292A1 ES438292A1 ES438292A ES438292A ES438292A1 ES 438292 A1 ES438292 A1 ES 438292A1 ES 438292 A ES438292 A ES 438292A ES 438292 A ES438292 A ES 438292A ES 438292 A1 ES438292 A1 ES 438292A1
- Authority
- ES
- Spain
- Prior art keywords
- deviations
- given
- frequency
- range
- signal
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/87—Regeneration of colour television signals
- H04N9/88—Signal drop-out compensation
- H04N9/882—Signal drop-out compensation the signal being a composite colour television signal
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Signal Processing For Recording (AREA)
- Optical Recording Or Reproduction (AREA)
- Picture Signal Circuits (AREA)
Abstract
Improvements in apparatus for detecting and compensating for image defects, of the type used in systems for the reproduction of successive image recording that comprise a capture device to recover from said recording, carrier waves that have an instantaneous frequency subject to variations in a range of deviations given according to the amplitude of a video signal representative of images of a given bandwidth, there are random occasions during playback when the instantaneous frequency of the wave output of said capture means deviates from the range of given deviations; means for detecting frequency modulation coupled to said pick-up means, said detecting means comprising a low-pass filter having a pass band limited substantially to the bandwidth of the given video signal to provide a demodulated signal having an amplitude that normally corresponds to the amplitude of said video signal but which is subject to parasitic amplitude variations during said occasions of deviation of the frequency of the output wave from the range of given deviations, means to develop the exit sign; and means for normally supplying the demodulated output signal of said low pass filter to the means developing the output signal; characterized in that a first device coupled to the frequency modulation detecting means is arranged to develop an impulse when the instantaneous frequency of the wave output of said pick-up means falls in a frequency band above the range of deviations Dadaist; a second device coupled to said frequency modulation detecting means to develop a pulse when the instantaneous frequency of the wave output of said pick-up means falls in a frequency band below the given range of deviations; means, comprising an aggregator responsive to the outputs of said first and second pulse developing devices, for developing a fault indication signal indicative of deviations from said instantaneous frequency from the given range of deviations; means responsive to said defect indication signal to deactivate the supply of said demodulated signal. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US47710274A | 1974-06-06 | 1974-06-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES438292A1 true ES438292A1 (en) | 1977-01-01 |
Family
ID=23894551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES438292A Expired ES438292A1 (en) | 1974-06-06 | 1975-06-06 | Defect detection and compensation system |
Country Status (23)
| Country | Link |
|---|---|
| JP (1) | JPS5649037B2 (en) |
| AR (1) | AR209304A1 (en) |
| AT (1) | AT340490B (en) |
| AU (1) | AU497019B2 (en) |
| BE (1) | BE829921A (en) |
| BR (1) | BR7503497A (en) |
| CA (1) | CA1063711A (en) |
| CH (1) | CH595739A5 (en) |
| DD (1) | DD120991A5 (en) |
| DE (1) | DE2525365A1 (en) |
| DK (1) | DK252475A (en) |
| ES (1) | ES438292A1 (en) |
| FI (1) | FI751586A (en) |
| FR (1) | FR2274185A1 (en) |
| GB (1) | GB1503806A (en) |
| IN (1) | IN144074B (en) |
| IT (1) | IT1038311B (en) |
| NL (1) | NL7505813A (en) |
| NO (1) | NO751971L (en) |
| PL (1) | PL105599B1 (en) |
| SE (1) | SE402041B (en) |
| SU (1) | SU631093A3 (en) |
| ZA (1) | ZA753521B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51100522U (en) * | 1975-02-10 | 1976-08-12 | ||
| JPS5310856A (en) * | 1976-07-16 | 1978-01-31 | Sansei Denki Seisakushiyo Gous | Winding device |
| JPS5648169Y2 (en) * | 1977-03-10 | 1981-11-11 | ||
| JPS53114608A (en) * | 1977-03-16 | 1978-10-06 | Matsushita Electric Ind Co Ltd | Defect detector |
| US4119812A (en) * | 1977-04-20 | 1978-10-10 | Rca Corporation | Signal defect detection and compensation with signal de-emphasis |
| US4158855A (en) * | 1977-11-29 | 1979-06-19 | Rca Corporation | Dropout compensator with proportional duration dropout detector |
| US4481616A (en) * | 1981-09-30 | 1984-11-06 | Rca Corporation | Scanning capacitance microscope |
| JPS5940326A (en) * | 1982-08-30 | 1984-03-06 | Hitachi Ltd | Disk reproducer |
-
1975
- 1975-05-03 IN IN893/CAL/1975A patent/IN144074B/en unknown
- 1975-05-07 GB GB19162/75A patent/GB1503806A/en not_active Expired
- 1975-05-14 CA CA226,957A patent/CA1063711A/en not_active Expired
- 1975-05-16 NL NL7505813A patent/NL7505813A/en not_active Application Discontinuation
- 1975-05-20 IT IT23557/75A patent/IT1038311B/en active
- 1975-05-29 AU AU81675/75A patent/AU497019B2/en not_active Expired
- 1975-05-30 JP JP6597375A patent/JPS5649037B2/ja not_active Expired
- 1975-05-30 SE SE7506216A patent/SE402041B/en unknown
- 1975-05-30 ZA ZA3521A patent/ZA753521B/en unknown
- 1975-05-30 FI FI751586A patent/FI751586A/fi not_active Application Discontinuation
- 1975-06-02 AR AR259045A patent/AR209304A1/en active
- 1975-06-02 CH CH710075A patent/CH595739A5/xx not_active IP Right Cessation
- 1975-06-04 BR BR4474/75D patent/BR7503497A/en unknown
- 1975-06-04 NO NO751971A patent/NO751971L/no unknown
- 1975-06-04 DK DK252475A patent/DK252475A/en unknown
- 1975-06-05 SU SU752141751A patent/SU631093A3/en active
- 1975-06-05 AT AT429675A patent/AT340490B/en not_active IP Right Cessation
- 1975-06-05 BE BE157069A patent/BE829921A/en unknown
- 1975-06-05 FR FR7517622A patent/FR2274185A1/en active Granted
- 1975-06-06 DE DE19752525365 patent/DE2525365A1/en not_active Ceased
- 1975-06-06 ES ES438292A patent/ES438292A1/en not_active Expired
- 1975-06-06 PL PL1975181025A patent/PL105599B1/en unknown
- 1975-06-06 DD DD186489A patent/DD120991A5/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IN144074B (en) | 1978-03-18 |
| DK252475A (en) | 1975-12-07 |
| BE829921A (en) | 1975-10-01 |
| IT1038311B (en) | 1979-11-20 |
| NL7505813A (en) | 1975-12-09 |
| AU497019B2 (en) | 1978-11-23 |
| CA1063711A (en) | 1979-10-02 |
| AR209304A1 (en) | 1977-04-15 |
| FI751586A (en) | 1975-12-07 |
| ZA753521B (en) | 1977-01-26 |
| CH595739A5 (en) | 1978-02-28 |
| DE2525365A1 (en) | 1975-12-18 |
| SU631093A3 (en) | 1978-10-30 |
| AT340490B (en) | 1977-12-12 |
| SE402041B (en) | 1978-06-12 |
| BR7503497A (en) | 1976-05-25 |
| AU8167575A (en) | 1976-12-02 |
| JPS5649037B2 (en) | 1981-11-19 |
| FR2274185A1 (en) | 1976-01-02 |
| SE7506216L (en) | 1975-12-08 |
| ATA429675A (en) | 1977-04-15 |
| FR2274185B1 (en) | 1982-04-09 |
| GB1503806A (en) | 1978-03-15 |
| DD120991A5 (en) | 1976-07-05 |
| JPS517815A (en) | 1976-01-22 |
| NO751971L (en) | 1975-12-09 |
| PL105599B1 (en) | 1979-10-31 |
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