FR2329047A1 - Video tape recorder with speed selector - has external pulse drive to permit power economy - Google Patents

Video tape recorder with speed selector - has external pulse drive to permit power economy

Info

Publication number
FR2329047A1
FR2329047A1 FR7631409A FR7631409A FR2329047A1 FR 2329047 A1 FR2329047 A1 FR 2329047A1 FR 7631409 A FR7631409 A FR 7631409A FR 7631409 A FR7631409 A FR 7631409A FR 2329047 A1 FR2329047 A1 FR 2329047A1
Authority
FR
France
Prior art keywords
rotor
external pulse
video tape
tape recorder
pulse drive
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.)
Granted
Application number
FR7631409A
Other languages
French (fr)
Other versions
FR2329047B1 (en
Inventor
Minoru Koda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of FR2329047A1 publication Critical patent/FR2329047A1/en
Application granted granted Critical
Publication of FR2329047B1 publication Critical patent/FR2329047B1/fr
Granted legal-status Critical Current

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
    • H04N5/78—Television signal recording using magnetic recording
    • H04N5/782—Television signal recording using magnetic recording on tape
    • H04N5/783—Adaptations for reproducing at a rate different from the recording rate
    • 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
    • G11B15/1808—Driving of both record carrier and head
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/005—Reproducing at a different information rate from the information rate of recording
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/90—Tape-like record carriers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Control Of Velocity Or Acceleration (AREA)
  • Control Of Stepping Motors (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

The magnetic recording/reproduction system for video signals, uses magnetic tape and a revolving head, in which the tape is driven at reproduction speed by a normal brushless motor, or alternately at a lower speed, in which the motor is driven by external pulses at a more uniform rate with lower power consumption. The drive motor has a rotor, a stator core carrying main windings of the side nearest the rotor, and a rotor position detector to detect the angular setting of the rotor, with a selector to feed the stator winding according to the rotor detection for fast speeds or from the external pulse source for lower speeds.
FR7631409A 1975-10-20 1976-10-19 Video tape recorder with speed selector - has external pulse drive to permit power economy Granted FR2329047A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50126643A JPS5810780B2 (en) 1975-10-20 1975-10-20 Jikiki Rokusai Seisouchi

Publications (2)

Publication Number Publication Date
FR2329047A1 true FR2329047A1 (en) 1977-05-20
FR2329047B1 FR2329047B1 (en) 1980-06-20

Family

ID=14940268

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7631409A Granted FR2329047A1 (en) 1975-10-20 1976-10-19 Video tape recorder with speed selector - has external pulse drive to permit power economy

Country Status (4)

Country Link
JP (1) JPS5810780B2 (en)
CA (1) CA1107394A (en)
DE (1) DE2644259B2 (en)
FR (1) FR2329047A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2437755A1 (en) * 1978-09-14 1980-04-25 Sony Corp APPARATUS FOR REPRODUCING A RECORDED VIDEO SIGNAL

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4330196A (en) * 1979-02-22 1982-05-18 Matsushita Electric Industrial Co., Ltd. Electrophotographic copying apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5036910A (en) * 1973-08-09 1975-04-07

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2437755A1 (en) * 1978-09-14 1980-04-25 Sony Corp APPARATUS FOR REPRODUCING A RECORDED VIDEO SIGNAL

Also Published As

Publication number Publication date
FR2329047B1 (en) 1980-06-20
JPS5810780B2 (en) 1983-02-28
JPS5250209A (en) 1977-04-22
AU1757276A (en) 1978-03-16
DE2644259B2 (en) 1979-09-20
DE2644259A1 (en) 1977-04-28
DE2644259C3 (en) 1980-06-26
CA1107394A (en) 1981-08-18

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Legal Events

Date Code Title Description
ST Notification of lapse