HK39796A - Video recorder with variable image searching speed - Google Patents
Video recorder with variable image searching speedInfo
- Publication number
- HK39796A HK39796A HK39796A HK39796A HK39796A HK 39796 A HK39796 A HK 39796A HK 39796 A HK39796 A HK 39796A HK 39796 A HK39796 A HK 39796A HK 39796 A HK39796 A HK 39796A
- Authority
- HK
- Hong Kong
- Prior art keywords
- image searching
- video recorder
- speed
- searching speed
- variable image
- Prior art date
Links
Classifications
-
- 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
- G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
- G11B15/46—Controlling, regulating, or indicating speed
- G11B15/467—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven
-
- 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
- G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
- G11B15/46—Controlling, regulating, or indicating speed
- G11B15/467—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven
- G11B15/4673—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven by controlling the speed of the tape while the head is rotating
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/18—Controlling the angular speed together with angular position or phase
- H02P23/186—Controlling the angular speed together with angular position or phase of one shaft by controlling the prime mover
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
- Television Signal Processing For Recording (AREA)
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
Abstract
In a video recorder with changeable image searching speed, it is possible to invert the drive direction of the tape by passing on a tape still position. A track centering value is affected to each image searching speed in order to obtain an optimum image reproduction. Furthermore, speed variations during the reproduction of tapes having different characteristics are recognized as phase offsets, integrated and used as fixed follow up for resetting the speed regulation circuit.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19853522935 DE3522935A1 (en) | 1985-06-27 | 1985-06-27 | VIDEO RECORDER |
Publications (1)
Publication Number | Publication Date |
---|---|
HK39796A true HK39796A (en) | 1996-03-15 |
Family
ID=6274299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK39796A HK39796A (en) | 1985-06-27 | 1996-03-07 | Video recorder with variable image searching speed |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0235168B1 (en) |
JP (1) | JP2523507B2 (en) |
KR (1) | KR950003828B1 (en) |
AT (1) | ATE67334T1 (en) |
DE (2) | DE3522935A1 (en) |
HK (1) | HK39796A (en) |
WO (1) | WO1987000335A1 (en) |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3569808A (en) * | 1967-07-25 | 1971-03-09 | Victor Company Of Japan | Servo system for magnetic recording and reproducing apparatus |
US3686469A (en) * | 1970-04-02 | 1972-08-22 | Ampex | Steady state phase error correction circuit |
JPS515569B1 (en) * | 1970-05-23 | 1976-02-20 | ||
JPS5441114A (en) * | 1977-09-08 | 1979-04-02 | Sony Corp | Automatic tracking system |
JPS56166678A (en) * | 1980-05-28 | 1981-12-21 | Matsushita Electric Ind Co Ltd | Magnetic video recording and reproducing device |
JPS5780881A (en) * | 1980-11-07 | 1982-05-20 | Matsushita Electric Ind Co Ltd | Rotary head type magnetic recording and reproducing device |
JPS5827483A (en) * | 1981-08-12 | 1983-02-18 | Hitachi Ltd | Running speed controlling system for recording medium in magnetic recorder and reproducer |
US4536806A (en) * | 1982-04-02 | 1985-08-20 | Ampex Corporation | Microprocessor controlled multiple servo system for a recording and/or reproducing apparatus |
WO1984001252A1 (en) * | 1982-09-17 | 1984-03-29 | Ampex | A vtr servo system having high speed control track lock capability |
JPS5998342A (en) * | 1982-11-26 | 1984-06-06 | Victor Co Of Japan Ltd | Servo-circuit of magnetic reproducing device |
JPS5986055U (en) * | 1982-12-01 | 1984-06-11 | 三菱電機株式会社 | magnetic recording and reproducing device |
JPS59151583A (en) * | 1983-02-09 | 1984-08-30 | Matsushita Electric Ind Co Ltd | Video tape recorder |
-
1985
- 1985-06-27 DE DE19853522935 patent/DE3522935A1/en not_active Withdrawn
-
1986
- 1986-06-06 WO PCT/EP1986/000341 patent/WO1987000335A1/en active IP Right Grant
- 1986-06-06 EP EP86904126A patent/EP0235168B1/en not_active Expired - Lifetime
- 1986-06-06 KR KR1019870700165A patent/KR950003828B1/en not_active IP Right Cessation
- 1986-06-06 AT AT86904126T patent/ATE67334T1/en not_active IP Right Cessation
- 1986-06-06 DE DE8686904126T patent/DE3681438D1/en not_active Expired - Lifetime
- 1986-06-27 JP JP61149885A patent/JP2523507B2/en not_active Expired - Lifetime
-
1996
- 1996-03-07 HK HK39796A patent/HK39796A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE3681438D1 (en) | 1991-10-17 |
KR880700403A (en) | 1988-03-15 |
JPS6224782A (en) | 1987-02-02 |
KR950003828B1 (en) | 1995-04-20 |
ATE67334T1 (en) | 1991-09-15 |
DE3522935A1 (en) | 1987-01-08 |
EP0235168B1 (en) | 1991-09-11 |
JP2523507B2 (en) | 1996-08-14 |
WO1987000335A1 (en) | 1987-01-15 |
EP0235168A1 (en) | 1987-09-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PF | Patent in force | ||
PE | Patent expired |
Effective date: 20060605 |