FR2299697B1 - - Google Patents
Info
- Publication number
- FR2299697B1 FR2299697B1 FR7425491A FR7425491A FR2299697B1 FR 2299697 B1 FR2299697 B1 FR 2299697B1 FR 7425491 A FR7425491 A FR 7425491A FR 7425491 A FR7425491 A FR 7425491A FR 2299697 B1 FR2299697 B1 FR 2299697B1
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/93—Regeneration of the television signal or of selected parts thereof
- H04N5/94—Signal drop-out compensation
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Television Signal Processing For Recording (AREA)
- Manipulation Of Pulses (AREA)
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7425491A FR2299697A1 (fr) | 1974-07-23 | 1974-07-23 | Procédé de détection d'altération de signaux de lecture, et appareil mettant oeuvre un tel procédé |
| US05/597,634 US4017895A (en) | 1974-07-23 | 1975-07-21 | Method of detecting defects in read out signals, and apparatus for implementing the same |
| DE2532729A DE2532729C2 (de) | 1974-07-23 | 1975-07-22 | Schaltungsanordnung zur Erfassung von Frequenzänderungen eines Signals, insbesondere eines Lesesignals bei dynamischen magnetischen Informationsspeichern |
| CA231989A CA1054707A (en) | 1974-07-23 | 1975-07-22 | Method of detecting alterations in read out signals, and apparatus for implementing the same |
| GB30696/75A GB1518116A (en) | 1974-07-23 | 1975-07-22 | Method of correcting alterations in read out signals and apparatus for implementing the same |
| IT25655/75A IT1039989B (it) | 1974-07-23 | 1975-07-23 | Procedimento di rivelazione d alterazione di segnali di lettura d informazione registrata su unsupporto ed apparecchhio per effettuarte tale procedimento |
| JP50090006A JPS5935239B2 (ja) | 1974-07-23 | 1975-07-23 | 読出し信号の変動を検出する方法および装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7425491A FR2299697A1 (fr) | 1974-07-23 | 1974-07-23 | Procédé de détection d'altération de signaux de lecture, et appareil mettant oeuvre un tel procédé |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2299697A1 FR2299697A1 (fr) | 1976-08-27 |
| FR2299697B1 true FR2299697B1 (US06229276-20010508-P00022.png) | 1980-04-18 |
Family
ID=9141582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7425491A Granted FR2299697A1 (fr) | 1974-07-23 | 1974-07-23 | Procédé de détection d'altération de signaux de lecture, et appareil mettant oeuvre un tel procédé |
Country Status (7)
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1536851A (en) * | 1975-03-10 | 1978-12-20 | Rca Corp | Video carrier wave defect detection and compensation |
| 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 |
| JPS54139506A (en) * | 1978-04-20 | 1979-10-30 | Universal Pioneer Corp | Device for detecting droppout |
| US4306255A (en) * | 1978-06-22 | 1981-12-15 | Matsushita Electric Industrial Co., Ltd. | Magnetic record/playback system of rotating head type |
| US4385374A (en) * | 1980-11-21 | 1983-05-24 | Rca Corporation | Video disc player with RFI reduction circuit including an AGC amplifier and dual function peak detector |
| JPS62180568A (ja) * | 1986-02-04 | 1987-08-07 | Sony Corp | デイスク状記録媒体の欠陥検出装置 |
| JPS63305686A (ja) * | 1987-06-08 | 1988-12-13 | Sony Corp | ドロップアウト検出回路 |
| US5430551A (en) * | 1990-11-07 | 1995-07-04 | Nokia Unterhaltungselektronik Gmbh | Video recorder with distortion corrector circuit |
| US6775344B1 (en) * | 1999-04-02 | 2004-08-10 | Storage Technology Corporation | Dropout resistant phase-locked loop |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3080487A (en) * | 1959-07-06 | 1963-03-05 | Thompson Ramo Wooldridge Inc | Timing signal generator |
| US3071723A (en) * | 1960-05-03 | 1963-01-01 | Potter Instrument Co Inc | Device for detecting defects in magnetic tape |
| DE1516930C3 (de) * | 1966-04-27 | 1975-12-18 | Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen | Anordnung zur Frequenzmessung einer Wechselspannung mit Hilfe von Zeilgliedern |
| US3474418A (en) * | 1967-06-19 | 1969-10-21 | Ibm | Data tracking system |
| DE2213479B1 (de) * | 1972-03-20 | 1973-05-10 | Siemens AG, 1000 Berlin u. 8000 München | Magnettongeraet fuer bandfoermige aufzeichnungstraeger |
| US3786358A (en) * | 1972-12-27 | 1974-01-15 | Ibm | Method and apparatus for detecting the beginning of data block |
| US3865981A (en) * | 1973-07-16 | 1975-02-11 | Odetics Inc | Clock signal assurance in digital data communication systems |
| NL7310869A (nl) * | 1973-08-07 | 1975-02-11 | Philips Nv | Inrichting voor het weergeven van een op een registratiedrager opgetekend videosignaal. |
| NL7402014A (nl) * | 1974-02-14 | 1975-08-18 | Philips Nv | Inrichting voor het detekteren van signaaluit- vallen. |
| US3909518A (en) * | 1974-06-06 | 1975-09-30 | Rca Corp | Signal switching apparatus for compensating record defects |
| US3925605A (en) * | 1974-06-28 | 1975-12-09 | Zenith Radio Corp | Dropout detector for video disc playback |
| US3947873A (en) * | 1974-09-19 | 1976-03-30 | Basf Aktiengesellschaft | Method and circuit for detecting and compensating for drop-out and distortion of frequency modulated video signals |
-
1974
- 1974-07-23 FR FR7425491A patent/FR2299697A1/fr active Granted
-
1975
- 1975-07-21 US US05/597,634 patent/US4017895A/en not_active Expired - Lifetime
- 1975-07-22 CA CA231989A patent/CA1054707A/en not_active Expired
- 1975-07-22 GB GB30696/75A patent/GB1518116A/en not_active Expired
- 1975-07-22 DE DE2532729A patent/DE2532729C2/de not_active Expired
- 1975-07-23 IT IT25655/75A patent/IT1039989B/it active
- 1975-07-23 JP JP50090006A patent/JPS5935239B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2532729C2 (de) | 1990-05-31 |
| JPS5935239B2 (ja) | 1984-08-27 |
| CA1054707A (en) | 1979-05-15 |
| US4017895A (en) | 1977-04-12 |
| FR2299697A1 (fr) | 1976-08-27 |
| JPS5163609A (en) | 1976-06-02 |
| DE2532729A1 (de) | 1976-02-12 |
| IT1039989B (it) | 1979-12-10 |
| GB1518116A (en) | 1978-07-19 |
