BE903139A - Circuit de production de signal d'horloge pour dispositif d'enregistrement de signaux numeriques - Google Patents
Circuit de production de signal d'horloge pour dispositif d'enregistrement de signaux numeriquesInfo
- Publication number
- BE903139A BE903139A BE0/215514A BE215514A BE903139A BE 903139 A BE903139 A BE 903139A BE 0/215514 A BE0/215514 A BE 0/215514A BE 215514 A BE215514 A BE 215514A BE 903139 A BE903139 A BE 903139A
- Authority
- BE
- Belgium
- Prior art keywords
- recording device
- clock signal
- production circuit
- digital signal
- signal recording
- Prior art date
Links
- 238000001514 detection method Methods 0.000 abstract 1
- 230000010355 oscillation Effects 0.000 abstract 1
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
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/802—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving processing of the sound signal
-
- 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
- H04N5/932—Regeneration of analogue synchronisation signals
-
- 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
Abstract
Le circuit de production de signal d'horloge conforme à la présente invention est conçu de manière à ce que, en réponse à des signaux de détection d'affaiblissement, la fréquence d'oscillation d'un oscillateur d'un circuit PLL soit maintenue stable, de façon à fournir des signaux d'horloge stables, pour la démodulation, meme si le support d'enregistrement présente des griffes, salissures, et analogues.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59181153A JPH0634309B2 (ja) | 1984-08-29 | 1984-08-29 | クロツク生成回路 |
Publications (1)
Publication Number | Publication Date |
---|---|
BE903139A true BE903139A (fr) | 1985-12-16 |
Family
ID=16095811
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE0/215514A BE903139A (fr) | 1984-08-29 | 1985-08-28 | Circuit de production de signal d'horloge pour dispositif d'enregistrement de signaux numeriques |
Country Status (5)
Country | Link |
---|---|
US (1) | US4729042A (fr) |
JP (1) | JPH0634309B2 (fr) |
BE (1) | BE903139A (fr) |
DE (1) | DE3530203A1 (fr) |
GB (1) | GB2167596B (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4864427A (en) * | 1986-12-22 | 1989-09-05 | Pioneer Electronic Corporation | Disk reproducing method and apparatus for disks with different video bandwidths |
DE277000T1 (de) * | 1987-01-27 | 1988-11-24 | Victor Company Of Japan, Ltd., Yokohama, Kanagawa, Jp | Geraet zur magnetischen aufzeichnung und/oder wiedergabe. |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5746306A (en) * | 1980-09-03 | 1982-03-16 | Hitachi Ltd | Aural signal muting circuit of magnetic recorder and reproducer |
JPS5835703A (ja) * | 1981-08-24 | 1983-03-02 | Asahi Optical Co Ltd | 記録情報の再生装置 |
US4535366A (en) * | 1982-02-22 | 1985-08-13 | Discovision Associates | Universal video data playback |
DE3381815D1 (de) * | 1982-08-30 | 1990-09-20 | Pioneer Electronic Corp | Videoplatten-aufzeichnungs- und wiedergabesystem. |
JPS59104314U (ja) * | 1982-12-25 | 1984-07-13 | パイオニア株式会社 | ドロップアウト補償装置 |
JPS6087469A (ja) * | 1983-10-19 | 1985-05-17 | Hitachi Ltd | ドロップアウト補償装置 |
-
1984
- 1984-08-29 JP JP59181153A patent/JPH0634309B2/ja not_active Expired - Lifetime
-
1985
- 1985-08-16 GB GB08520575A patent/GB2167596B/en not_active Expired
- 1985-08-23 DE DE19853530203 patent/DE3530203A1/de active Granted
- 1985-08-27 US US06/769,646 patent/US4729042A/en not_active Expired - Fee Related
- 1985-08-28 BE BE0/215514A patent/BE903139A/fr not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JPS6159667A (ja) | 1986-03-27 |
US4729042A (en) | 1988-03-01 |
JPH0634309B2 (ja) | 1994-05-02 |
GB2167596A (en) | 1986-05-29 |
GB2167596B (en) | 1988-06-15 |
GB8520575D0 (en) | 1985-09-25 |
DE3530203A1 (de) | 1986-03-20 |
DE3530203C2 (fr) | 1987-03-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RE | Patent lapsed |
Owner name: PIONEER ELECTRIC CORP. Effective date: 19880831 |