GB1424865A - Tape recording and/or reproducing apapratus - Google Patents

Tape recording and/or reproducing apapratus

Info

Publication number
GB1424865A
GB1424865A GB395673A GB395673A GB1424865A GB 1424865 A GB1424865 A GB 1424865A GB 395673 A GB395673 A GB 395673A GB 395673 A GB395673 A GB 395673A GB 1424865 A GB1424865 A GB 1424865A
Authority
GB
United Kingdom
Prior art keywords
switch
tape
capacitor
transistor
turned
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
GB395673A
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic Corp
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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Publication of GB1424865A publication Critical patent/GB1424865A/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
    • 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
    • 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
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/34—Indicating arrangements 
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B31/00—Arrangements for the associated working of recording or reproducing apparatus with related apparatus

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

Abstract

1424865 Tape recorders; detecting imminent end of tape. PIONEER ELECTRONIC CORP 25 Jan 1973 [26 Jan 1972] 3956/73 Heading G5R [Also in Division H3] An electrical device for detecting the imminent end of a tape in a tape recorder senses the increasing rotational speed of the tape supply reel and produces an output when it exceeds a predetermined value. As shown, a switch S is provided on the supply reel shaft 4 and is switched at a rate proportional to the rotational speed. The switch S may include a brush, or may be a magnetically-operated reed switch. When the switch S opens, a capacitor C3 charges towards the Zener voltage of Zener diode ZD2, but is normally prevented from reaching it by a capacitor C2, which, when switch S is next closed and transistor Tr1 is turned off, charges and reaches the Zener voltage of Zener diode ZD1 first, thus turning on transistor Tr2 and discharging capacitor C3. When the switch S is next opened, Tr1 is turned on, C2 is thus discharged and Tr2 turned off, permitting C3 to charge again. At sufficiently high switching rates, capacitor C2 never reaches Zener voltage ZD1, so that Tr2 is always off and C3 is allowed to reach Zeher voltage ZD2, thus turning on transistor Tr3. The load L may be a lamp, or a relay which actuates another tape recorder.
GB395673A 1972-01-26 1973-01-25 Tape recording and/or reproducing apapratus Expired GB1424865A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1111072 1972-01-26

Publications (1)

Publication Number Publication Date
GB1424865A true GB1424865A (en) 1976-02-11

Family

ID=11768855

Family Applications (1)

Application Number Title Priority Date Filing Date
GB395673A Expired GB1424865A (en) 1972-01-26 1973-01-25 Tape recording and/or reproducing apapratus

Country Status (2)

Country Link
DE (1) DE2303622C3 (en)
GB (1) GB1424865A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2150375A (en) * 1983-11-18 1985-06-26 Brian Montandon Distributing device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6019574B2 (en) * 1978-02-24 1985-05-16 カシオ計算機株式会社 Tape running stop detection device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2150375A (en) * 1983-11-18 1985-06-26 Brian Montandon Distributing device

Also Published As

Publication number Publication date
DE2303622C3 (en) 1980-01-03
DE2303622A1 (en) 1973-08-02
DE2303622B2 (en) 1979-05-03

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Legal Events

Date Code Title Description
PS Patent sealed
48R Reference inserted (sect. 8/1949)
PCNP Patent ceased through non-payment of renewal fee