JPS54143124A - Tape position indicator - Google Patents

Tape position indicator

Info

Publication number
JPS54143124A
JPS54143124A JP4983678A JP4983678A JPS54143124A JP S54143124 A JPS54143124 A JP S54143124A JP 4983678 A JP4983678 A JP 4983678A JP 4983678 A JP4983678 A JP 4983678A JP S54143124 A JPS54143124 A JP S54143124A
Authority
JP
Japan
Prior art keywords
reel
pattern
patterns
lit
revolutions
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
JP4983678A
Other languages
Japanese (ja)
Other versions
JPS5837632B2 (en
Inventor
Satoru Kobayashi
Katsuya Sato
Kiyoshi Hasegawa
Koichi Iegi
Kazuhiko Koike
Takashi Watanabe
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP53049836A priority Critical patent/JPS5837632B2/en
Priority to GB7914560A priority patent/GB2025109B/en
Publication of JPS54143124A publication Critical patent/JPS54143124A/en
Publication of JPS5837632B2 publication Critical patent/JPS5837632B2/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
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/34—Indicating arrangements 
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B1/00—Film strip handling
    • G03B1/60—Measuring or indicating length of the used or unused film; Counting number of exposures
    • 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
    • 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
    • G11B27/11—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier
    • G11B27/13—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier the information being derived from movement of the record carrier, e.g. using tachometer

Landscapes

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

Abstract

PURPOSE: To effect the visible display with the use of a simple construction by controlling the lighting number of light emitting elements with the voltage according to the reel rotational angle and by controlling the lighting operations of the elements according to the revolutions of the reel.
CONSTITUTION: A disk, which performs one rotation at most in response to the let-off reel at the beginning and end of the tape winding operation, is arranged with sector patterns P1 to P5 in the form of a concentric circle in accordance with the angle of rotations. On the other hand, the disk of the same revolutions as the lef-off reel is formed with a pattern P6, which extends all over the circumference, and a partial pattern P7 such that the resistance between the patterns P1, P2 and so on and the pattern P6 are set at different levels. As a result, by the patterns P1 to P5 and the pattern P6, the light emitting diodes L1 to L5 of display means 15 are consecutively lit through a control circuit 14 to increase the lit number in accordance with the reel rotation angle so that the tape position can be visibly displayed with the use of a simple construction. The diodes L1 to L5 thus lit are flashed through a time control switching circuit 13 by the connection according to the revolutions of the reel between the patterns P1 to P5 and the pattern P7 thereby to display the tape run.
COPYRIGHT: (C)1979,JPO&Japio
JP53049836A 1978-04-28 1978-04-28 Tape position display device Expired JPS5837632B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP53049836A JPS5837632B2 (en) 1978-04-28 1978-04-28 Tape position display device
GB7914560A GB2025109B (en) 1978-04-28 1979-04-26 Apparatus forindicating the quantity of tape on a reel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53049836A JPS5837632B2 (en) 1978-04-28 1978-04-28 Tape position display device

Publications (2)

Publication Number Publication Date
JPS54143124A true JPS54143124A (en) 1979-11-08
JPS5837632B2 JPS5837632B2 (en) 1983-08-17

Family

ID=12842159

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53049836A Expired JPS5837632B2 (en) 1978-04-28 1978-04-28 Tape position display device

Country Status (2)

Country Link
JP (1) JPS5837632B2 (en)
GB (1) GB2025109B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0448588Y2 (en) * 1984-12-11 1992-11-16

Also Published As

Publication number Publication date
JPS5837632B2 (en) 1983-08-17
GB2025109B (en) 1982-07-28
GB2025109A (en) 1980-01-16

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