GB1201477A - Rotation control device - Google Patents
Rotation control deviceInfo
- Publication number
- GB1201477A GB1201477A GB50394/67A GB5039467A GB1201477A GB 1201477 A GB1201477 A GB 1201477A GB 50394/67 A GB50394/67 A GB 50394/67A GB 5039467 A GB5039467 A GB 5039467A GB 1201477 A GB1201477 A GB 1201477A
- Authority
- GB
- United Kingdom
- Prior art keywords
- signal
- rotary
- phase
- fed
- head
- 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
- 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
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/0016—Control of angular speed of one shaft without controlling the prime mover
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S474/00—Endless belt power transmission systems or components
- Y10S474/90—Phase variator
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electric Motors In General (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Abstract
1,201,477. Automatic speed control. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. Nov.6, 1967 [Nov.17, 1966], No.50394/67. Heading G3R. [Also in Divisions F2 and G5] In an apparatus for magnetically recording and reproducing a video signal, a rotary recording and reproducing head drum 53 is driven by a constant speed A.C. synchronous motor 70 through a continuously variable ratio friction gear comprising an elastic belt 75 embracing driving and driven pulleys, such as 76, 78 at least one of which is a conical pulley; the ratio of the gear is varied by braking the driven pulley at 79 so as to effect belt shift; and the brake 79, of the eddy-current type, is responsive to an error signal representing the phase difference between the phase of rotation of the head drum 53 (detected, e.g. photo-electrically or magnetically) and the phase of a reference signal. Magnetic tape 57 is taken from a supply reel 58, past an idler 59 and a guide post 60, over a semi-cylindrical guide 52, past a guide post 61, a stationary control signal recording-reproducing head 62, a capstan 63 and an idler 64, and taken up on a take-up reel 65. The rotary head drum 53 has two magnetic heads 54, 55 which protrude through a slit in the guide 52. The arrangement is such that the tape runs helically over the guide 52 with the result that magnetized tracks 67, 68 of the form shown in Fig.1 are formed on the tape by the rotary heads 54, 55 whereas a continuous control signal track 69 is formed by the stationary head 62. In addition to the driving pulley 76, the motor 70 drives a capstan flywheel 72 through an elastic belt 73. Operation: In the recording mode, on one hand a composite video signal from a television receiver or camera is fed into a separator 91 where a vertical synchronizing pulse signal of 60 c.p.s. is solely separated and fed into a divider 92 a 30 c.p.s. pulse signal from which is then delayed and phase shifted at 93. On the other hand, a signal is derived from a pick-up head 102 adjacent a permanent magnet 101 on the rotary head drum 53. The signal at 93, taken through a switch S 1 , and the signal from the rotary head 53 are fed to a phase comparator 94, the error signal from which is smoothed by a low-pass filter 95 and amplified at 96 to provide an amplified D.C. output for supply to the brake 79. Meanwhile, the composite video signal is modulated (e.g. by an FM modulator) and passed through a recording amplifier to the rotary heads 54, 55, and, at the same time, the 30 c.p.s. pulse signal from 92 is fed through a switch S 2 and an amplifier 97 to the control head 62 to record a control signal track 69. The delay time of the phase shifter 93 is selected so that the periods of engage - ment and disengagement of the rotary heads 54, 55 lie in the television signal vertical blanking period. In the playback mode, the signal from the rotary head drum is compared at 94 with the control signal 69, recorded on the tape and fed through the amplifier 97, the switch S 2 , a phase shifter 99 and the switch S 1 . The delay time of the phase shifter 99 is so adjusted that the heads 54, 55 exactly trace the recorded tracks 67, 68.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7600066 | 1966-11-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1201477A true GB1201477A (en) | 1970-08-05 |
Family
ID=13592514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB50394/67A Expired GB1201477A (en) | 1966-11-17 | 1967-11-06 | Rotation control device |
Country Status (3)
Country | Link |
---|---|
US (1) | US3562427A (en) |
DE (1) | DE1537245C3 (en) |
GB (1) | GB1201477A (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2332770A1 (en) * | 1972-08-29 | 1974-03-07 | Rca Corp | DRIVE SYSTEM FOR A DISC PLAYBACK DEVICE |
DE2306197B1 (en) * | 1973-02-08 | 1974-04-25 | Grundig E.M.V. Elektro-Mechanischeversuchsanstalt Inh. Max Grundig, 8510 Fuerth | Arrangement for automatic track search when playing magnetic helical track recordings |
JPS551724A (en) * | 1978-06-19 | 1980-01-08 | Sony Corp | Video signal reproducing unit |
US4355266A (en) * | 1980-07-31 | 1982-10-19 | Ampex Corporation | Eddy current servo system for controlling the rotation of disk packs |
US4567824A (en) * | 1980-09-12 | 1986-02-04 | Dahlgren Manufacturing Company, Inc. | Planetary conveyor system |
WO1982000976A1 (en) * | 1980-09-12 | 1982-04-01 | H Dahlgren | Planetary synchronizing device |
CA1238102A (en) * | 1985-07-22 | 1988-06-14 | Joseph T. Woyton | Variable speed drive |
JP2826556B2 (en) * | 1990-11-28 | 1998-11-18 | キヤノン株式会社 | Industrial robot |
US20050021123A1 (en) * | 2001-04-30 | 2005-01-27 | Jurgen Dorn | Variable speed self-expanding stent delivery system and luer locking connector |
US20050273151A1 (en) * | 2004-06-04 | 2005-12-08 | John Fulkerson | Stent delivery system |
JP2009504345A (en) * | 2005-08-17 | 2009-02-05 | シー・アール・バード・インコーポレーテッド | Variable speed stent delivery system |
EP1971299B1 (en) | 2006-01-13 | 2014-07-16 | C.R. Bard, Inc. | Stent delivery system |
US11026822B2 (en) | 2006-01-13 | 2021-06-08 | C. R. Bard, Inc. | Stent delivery system |
GB0615658D0 (en) * | 2006-08-07 | 2006-09-13 | Angiomed Ag | Hand-held actuator device |
GB0713497D0 (en) | 2007-07-11 | 2007-08-22 | Angiomed Ag | Device for catheter sheath retraction |
GB201017834D0 (en) | 2010-10-21 | 2010-12-01 | Angiomed Ag | System to deliver a bodily implant |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6868A (en) * | 1849-11-13 | Regulator for water-wheels | ||
US3168618A (en) * | 1961-08-28 | 1965-02-02 | Fernseh G M B H Darmstadt | Apparatus for recording signals and for reproducing signals recorded on a magnetizable tape |
FR548675A (en) * | 1922-03-10 | 1923-01-20 | Gear shifting for light motor vehicles | |
US2941409A (en) * | 1955-10-21 | 1960-06-21 | Richard P Witt | Variable speed power transmission device |
US2898772A (en) * | 1957-06-18 | 1959-08-11 | Rufus M Campbell | Variable speed cone pulley drive |
DE1286107B (en) * | 1964-06-06 | 1969-01-02 | Fernseh Gmbh | Device for recording or picking up electrical signals |
US3431353A (en) * | 1964-08-28 | 1969-03-04 | Sony Corp | Single motor magnetic tape recording and/or reproducing system |
-
1967
- 1967-11-06 GB GB50394/67A patent/GB1201477A/en not_active Expired
- 1967-11-10 DE DE1537245A patent/DE1537245C3/en not_active Expired
- 1967-11-13 US US682083A patent/US3562427A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE1537245C3 (en) | 1973-01-04 |
US3562427A (en) | 1971-02-09 |
DE1537245B2 (en) | 1972-06-22 |
DE1537245A1 (en) | 1969-12-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |