JPS54143124A - Tape position indicator - Google Patents
Tape position indicatorInfo
- 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
Links
- 238000010276 construction Methods 0.000 abstract 2
- 238000004804 winding Methods 0.000 abstract 1
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 arrangementsÂ
-
- 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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0448588Y2 (en) * | 1984-12-11 | 1992-11-16 |
-
1978
- 1978-04-28 JP JP53049836A patent/JPS5837632B2/en not_active Expired
-
1979
- 1979-04-26 GB GB7914560A patent/GB2025109B/en not_active Expired
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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