ES418040A1 - Recording and playback apparatus - Google Patents

Recording and playback apparatus

Info

Publication number
ES418040A1
ES418040A1 ES418040A ES418040A ES418040A1 ES 418040 A1 ES418040 A1 ES 418040A1 ES 418040 A ES418040 A ES 418040A ES 418040 A ES418040 A ES 418040A ES 418040 A1 ES418040 A1 ES 418040A1
Authority
ES
Spain
Prior art keywords
signal
pulses
recorded
mode
recording
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
Application number
ES418040A
Other languages
Spanish (es)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES418040A1 publication Critical patent/ES418040A1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G11B27/022—Electronic editing of analogue information signals, e.g. audio or video signals
    • G11B27/024—Electronic editing of analogue information signals, e.g. audio or video signals on tapes
    • 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
    • G11B15/54—Controlling, regulating, or indicating speed by stroboscope; by tachometer

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Control Of Electric Motors In General (AREA)
  • Management Or Editing Of Information On Record Carriers (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Control Of Velocity Or Acceleration (AREA)

Abstract

A recording and reproducing apparatus for video signals, including a drive shaft or motive power transmission to move a record carrier, a servo system to control the speed of the drive shaft, and a tachometric generator, or tachogenerator, connected thereto to supply a pulse train proportional to the instantaneous speed, field synchronism pulses of the signal to be recorded or recorded being applied to the servo-system as the desired signal, which are recorded simultaneously on a separate or independent synchronization track in the recording, and the pulses supplied by the tachogenerator are applied as a measurement signal, all in the "record" or record mode, while in the "play" mode the mode pulses derived from a signal source are applied as the desired signal reference, and as a measurement signal the pulses obtained by scanning the synchronization track; apparatus that in order to ensure that an existing recording in the record carrier is followed without interruption, at an arbitrary point in it, by a new recording, comprises a switching device for executing said new recording, applying to the system as desired signal, in the "play" mode, the synchronism pulses of the signal to be recorded or recorded, and pulses related to the synchronism pulses of the signal to be recorded on the synchronization track, when the switching device is put into the "new recording" mode, characterized by the fact that a memory and measuring device followed by a comparator is enabled, and that the memory and measuring device is intended to measure the phase difference between the pulses supplied by the tachogenerator and the pulses obtained by scanning the synchronization track, and is intended to store the last of said v measurement values, one of the pulse trains starting measurement processes each time and ending the other pulse train, while the comparator compares the stored measurement value, which is applied to its first input, with a reference signal that is applied to its other input from a planned transmission path or circuit to derive a reference signal by removing it from the pulse train used to start the measurement processes and, if the two signals are the same, each time supplies a signal output in the form of an impulse which, by means of the switching device, is brought to the servo system as a measurement signal in the "new recording" mode. (Machine-translation by Google Translate, not legally binding)
ES418040A 1972-08-23 1973-08-21 Recording and playback apparatus Expired ES418040A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT727772A AT317314B (en) 1972-08-23 1972-08-23 Recording and reproducing device

Publications (1)

Publication Number Publication Date
ES418040A1 true ES418040A1 (en) 1976-03-16

Family

ID=3594434

Family Applications (1)

Application Number Title Priority Date Filing Date
ES418040A Expired ES418040A1 (en) 1972-08-23 1973-08-21 Recording and playback apparatus

Country Status (11)

Country Link
JP (1) JPS5434487B2 (en)
AT (1) AT317314B (en)
CA (1) CA1020661A (en)
CH (1) CH562494A5 (en)
DE (1) DE2339406C3 (en)
ES (1) ES418040A1 (en)
FR (1) FR2197289B1 (en)
GB (1) GB1441169A (en)
IT (1) IT994624B (en)
NL (1) NL7311340A (en)
SE (1) SE392788B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1572346A (en) * 1976-03-19 1980-07-30 Rca Corp Velocity and phase control for a disc recording and reproducing apparatus
FR2450014B1 (en) * 1979-02-26 1985-12-27 Sony Corp SERVO CIRCUIT FOR MAGNETOSCOPE
JPS5875647U (en) * 1981-11-14 1983-05-21 株式会社大隈鐵工所 Tool gripping mechanism of automatic tool changer
JPS5897737U (en) * 1981-12-22 1983-07-02 日本ビクター株式会社 magnetic recording and reproducing device
JPS5930216A (en) * 1982-08-14 1984-02-17 Victor Co Of Japan Ltd Magnetic recording and reproducing device for digital signal
DE3528452A1 (en) * 1985-08-08 1987-02-19 Thomson Brandt Gmbh VIDEO RECORDER
DE3528453A1 (en) * 1985-08-08 1987-02-19 Thomson Brandt Gmbh VIDEO RECORDER

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3542949A (en) * 1967-10-07 1970-11-24 Victor Company Of Japan Electronic editing device for a magnetic recording and reproducing apparatus
US3636252A (en) * 1969-02-17 1972-01-18 Ampex Servo for video tape apparatus with editing capabilities

Also Published As

Publication number Publication date
FR2197289A1 (en) 1974-03-22
DE2339406C3 (en) 1981-09-10
NL7311340A (en) 1974-02-26
SE392788B (en) 1977-04-18
DE2339406B2 (en) 1981-01-22
JPS5434487B2 (en) 1979-10-27
CH562494A5 (en) 1975-05-30
FR2197289B1 (en) 1976-09-17
AU5934673A (en) 1975-02-20
DE2339406A1 (en) 1974-03-07
JPS4960618A (en) 1974-06-12
CA1020661A (en) 1977-11-08
IT994624B (en) 1975-10-20
GB1441169A (en) 1976-06-30
AT317314B (en) 1974-08-26

Similar Documents

Publication Publication Date Title
GB1028008A (en) Improved magnetic recording and reproducing system
ES418040A1 (en) Recording and playback apparatus
GB1511510A (en) Magnetic recording apparatus
US3123668A (en) Video
US3978521A (en) Recording and playback apparatus for video tape editing
ES316538A1 (en) Magnetic recording of television signals with pre-recorded sync signals
ATE11189T1 (en) MAGNETIC PLAYBACK DEVICE.
US4185305A (en) Video information recording and reproducing methods and apparatus
US4918743A (en) Circuit for generating a dual purpose control signal in a disk apparatus
GB1318104A (en) Rotary head-type video tape magnetic recording and reproducing system
KR100275058B1 (en) Recording/reproducing apparatus
GB1209734A (en) A method and device for providing a time delay in the reproduction of information stored on a circulating recording medium
JPS55108980A (en) Magnetic recording and reproducing device
JPS62183050A (en) Speed control method
JPS5542372A (en) Magnetic recording and reproducing device
SU805409A2 (en) Information reproducing method
SU678506A1 (en) Device for magnetic recording and reproducing of time signals
SU726572A2 (en) Method of magnetic recording of pulse trains
SU146995A1 (en) The method of recording the amplitudes of the pulses on a magnetic drum
SU1427600A1 (en) Device for synchronizing magnetic recorders
SU361467A1 (en) Uh ^ - =
SU746705A1 (en) Magnetic tape storage
SU491981A1 (en) Method of controlling the movement of magnetic media
SU710068A1 (en) Method of monitoring the process of iclined linewise recording
GB949212A (en) Improvements relating to phasing a moving record with a moving part of transducing means