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JPS5718067A - Indicator for tape residual amount - Google Patents

Indicator for tape residual amount

Info

Publication number
JPS5718067A
JPS5718067A JP4248580A JP4248580A JPS5718067A JP S5718067 A JPS5718067 A JP S5718067A JP 4248580 A JP4248580 A JP 4248580A JP 4248580 A JP4248580 A JP 4248580A JP S5718067 A JPS5718067 A JP S5718067A
Authority
JP
Japan
Prior art keywords
tape
photodetectors
circuits
light
indicator
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.)
Pending
Application number
JP4248580A
Other languages
Japanese (ja)
Inventor
Marehiko Wada
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.)
COLUMBIA MAGUNE PROD KK
KOROMUBIA MAGUNE PURODAKUTSU K
Original Assignee
COLUMBIA MAGUNE PROD KK
KOROMUBIA MAGUNE PURODAKUTSU K
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 COLUMBIA MAGUNE PROD KK, KOROMUBIA MAGUNE PURODAKUTSU K filed Critical COLUMBIA MAGUNE PROD KK
Priority to JP4248580A priority Critical patent/JPS5718067A/en
Publication of JPS5718067A publication Critical patent/JPS5718067A/en
Pending 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
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/34—Indicating arrangements 

Landscapes

  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)

Abstract

PURPOSE:To inform the amount of tape winding to a blind person, by converting a position signal in response to the photodetecting position of transmitted light from a tape window section into audible sense. CONSTITUTION:When a cassette 1 is loaded to a case 5 and the power supply is applied, a light from a light emitting element 6 is interrupted at the location where a tape 11 wound around the reel is projected to a transparent window 4, by photodetectors 7a, 7b, and the light of photodetectors 7a-7e is irradiated and a voltage is produced. The output of the photodetectors 7a, 7b is applied to AND circuits 13a-13e of a logical circuit 9. The output of oscillation circuits 14a-14e is applied to the AND circuits 13a-13e. The frequency of the oscillation circuits 14a-14d is selected in the same frequency emitted from a speaker 10.
JP4248580A 1980-04-01 1980-04-01 Indicator for tape residual amount Pending JPS5718067A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4248580A JPS5718067A (en) 1980-04-01 1980-04-01 Indicator for tape residual amount

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4248580A JPS5718067A (en) 1980-04-01 1980-04-01 Indicator for tape residual amount

Publications (1)

Publication Number Publication Date
JPS5718067A true JPS5718067A (en) 1982-01-29

Family

ID=12637359

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4248580A Pending JPS5718067A (en) 1980-04-01 1980-04-01 Indicator for tape residual amount

Country Status (1)

Country Link
JP (1) JPS5718067A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4999721A (en) * 1982-12-23 1991-03-12 Canon Kabushiki Kaisha Recording and/or reproducing apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS511818U (en) * 1974-06-19 1976-01-08

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS511818U (en) * 1974-06-19 1976-01-08

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4999721A (en) * 1982-12-23 1991-03-12 Canon Kabushiki Kaisha Recording and/or reproducing apparatus

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