GB756972A - Information recording and reproduction apparatus - Google Patents

Information recording and reproduction apparatus

Info

Publication number
GB756972A
GB756972A GB189654A GB189654A GB756972A GB 756972 A GB756972 A GB 756972A GB 189654 A GB189654 A GB 189654A GB 189654 A GB189654 A GB 189654A GB 756972 A GB756972 A GB 756972A
Authority
GB
United Kingdom
Prior art keywords
transducer
reproduction
tape
recording
drum
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
GB189654A
Inventor
Gerhart Lothar Hamburger
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.)
HARTLEY ELECTROMOTIVES Ltd
Original Assignee
HARTLEY ELECTROMOTIVES 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 HARTLEY ELECTROMOTIVES Ltd filed Critical HARTLEY ELECTROMOTIVES Ltd
Priority to GB189654A priority Critical patent/GB756972A/en
Publication of GB756972A publication Critical patent/GB756972A/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
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • 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
    • 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
    • G11B15/20—Moving record carrier backwards or forwards by finite amounts, i.e. backspacing, forward spacing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/008—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires
    • G11B5/00813—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes
    • G11B5/00817—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes on longitudinal tracks only, e.g. for serpentine format recording
    • G11B5/00839—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes on longitudinal tracks only, e.g. for serpentine format recording using cyclically driven heads providing segmented tracks
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/52—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with simultaneous movement of head and record carrier, e.g. rotation of head
    • G11B5/53—Disposition or mounting of heads on rotating support
    • G11B5/531—Disposition of more than one recording or reproducing head on support rotating cyclically around an axis
    • G11B5/535—Disposition of more than one recording or reproducing head on support rotating cyclically around an axis perpendicular to the direction of movement of the tape, e.g. for longitudinal scanning

Landscapes

  • Control Of Position Or Direction (AREA)

Abstract

756,972. Magnetic recording and reproducing apparatus. HARTLEY ELECTROMOTIVES, Ltd. Jan. 21, 1955 [Jan. 21, 1954], No. 1896/54. Class 40(2) In a recording and reproducing having means for stopping reproduction and the movement of the record, means are operable in conjunction with the stop means to record on the medium a recording representative of the point at which reproduction stopped, and means are also operable by start means to scan the said recording and cause the reproduction to begin again at the point where reproduction was stopped. The high enertias normally required to ensure constant speed in a record apparatus cause the record to overshoot the transducer when stopping and thereby lose that part of the recording, and when re-starting to fail to reproduce properly a further portion of the recording while the record medium is attaining the correct velocity. The present invention is designed to avoid these deficiencies by coupling the drive capstan 18 through a differential gear with a drum 16 two sets of four magnetic transducers 20A, 20B, 20C, 20D and 21A, 21B, 21C, 21D, respectively, one set of which is superposed over the other and correspond to two different tracks on the tape 13. The cage 24 of the differential gear is driven by a motor 23, and during reproduction a brake 28 holds drum 16 stationary while capstan 18 draws the tape 13 over the drum 16. The signals on the tape are reproduced by the leading transducer, corresponding to transducer 20A in Fig. 2. When the reproduction is stopped by means not shown the circuit of the transducer 20A is broken, the brake 28 released, a brake 29 applied, and a constant frequency control signal applied to transducer 21A. The position on the tape at which reproduction ceased overshoots the position of the transducers 20A, 21A before coming to a standstill, but as the drum started to rotate counterclockwise at the instant reproduction ceased, the correct relative speed between tape and drum is maintained. Furthermore, at the same position on the tape that reproduction ceased the control signal recording was commenced on the tape corresponding to that position. When the apparatus is again switched for reproduction, the brake 29 is released, the brake 28 applied, and the transducer 21 corresponding to transducer 21B in Fig. 2 is switched in and when it reaches the position in which the control signal starts, the transducer 20 corresponding to transducer 20B is switched, by means not shown, to reproduce. By the time the drum 16 becomes stationary, the transducer 20B has come to rest in the position of transducer 20A in Fig. 2. The apparatus has been designed largely for purposes in which frequent interruptions of short duration take place, and a particular application described is that in which an automatic typewriter receives data and pauses are required and automatically initiated at the end of each line for sufficient time to enable the carriage of the typewriter to be returned to initial position.
GB189654A 1954-01-21 1954-01-21 Information recording and reproduction apparatus Expired GB756972A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB189654A GB756972A (en) 1954-01-21 1954-01-21 Information recording and reproduction apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB189654A GB756972A (en) 1954-01-21 1954-01-21 Information recording and reproduction apparatus

Publications (1)

Publication Number Publication Date
GB756972A true GB756972A (en) 1956-09-12

Family

ID=9729944

Family Applications (1)

Application Number Title Priority Date Filing Date
GB189654A Expired GB756972A (en) 1954-01-21 1954-01-21 Information recording and reproduction apparatus

Country Status (1)

Country Link
GB (1) GB756972A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1104738B (en) * 1956-11-05 1961-04-13 Gen Electric Method and apparatus for reading data from a magnetic tape memory
DE1106994B (en) * 1959-09-12 1961-05-18 Standard Elektrik Lorenz Ag Arrangement for stopping punched tape in the stop character in fast reading processes
US3169720A (en) * 1959-07-27 1965-02-16 Albert C Nolte Recording medium drive

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1104738B (en) * 1956-11-05 1961-04-13 Gen Electric Method and apparatus for reading data from a magnetic tape memory
US3169720A (en) * 1959-07-27 1965-02-16 Albert C Nolte Recording medium drive
DE1106994B (en) * 1959-09-12 1961-05-18 Standard Elektrik Lorenz Ag Arrangement for stopping punched tape in the stop character in fast reading processes

Similar Documents

Publication Publication Date Title
US2560234A (en) Mass production method of and apparatus for, making reelable magnetic phonograph records
JPS55114084A (en) Magnetic recording and reproducing device
JPH03290863A (en) Double face continuous reproducing type video disk device
JPH0115002Y2 (en)
KR840000933A (en) Magnetic recording and playback equipment
GB756972A (en) Information recording and reproduction apparatus
GB929364A (en) Improved drive control apparatus
GB1318104A (en) Rotary head-type video tape magnetic recording and reproducing system
KR850004142A (en) Magnetic recording and reproducing apparatus
ES422358A1 (en) Tape transport with fast forward speed
US2880279A (en) Sound recording and reproducing apparatus
GB1322651A (en) Method and apparatus for controlling combined optical and sound reproduction system
GB1165366A (en) Tape Recorders
US3839730A (en) Magnetic recording and/or reproducing apparatus with co-operative linking of two motors
US3524026A (en) Remote dictation apparatus with automatic control tone elimination
JPS6235175B2 (en)
US3893637A (en) Recording and/or play back apparatus
JPH0430234B2 (en)
GB1174417A (en) Improvements in or relating to Magnetic Tape Recording Apparatus.
SU493802A1 (en) Method of reproducing magnetic soundtracks with control signal
JPS5794816A (en) Rotary driving device
JPS57185779A (en) Video tape duplicator
JPS6215887Y2 (en)
JPS6313155A (en) Program researching mechanism for magnetic recording and reproducing device
GB917172A (en) Improvements in or relating to magnetic recording and/or reproducing apparatus