JPS5698763A - Display system for remaining amount of tape - Google Patents
Display system for remaining amount of tapeInfo
- Publication number
- JPS5698763A JPS5698763A JP17224679A JP17224679A JPS5698763A JP S5698763 A JPS5698763 A JP S5698763A JP 17224679 A JP17224679 A JP 17224679A JP 17224679 A JP17224679 A JP 17224679A JP S5698763 A JPS5698763 A JP S5698763A
- Authority
- JP
- Japan
- Prior art keywords
- tape
- reel
- remaining amount
- supply
- value
- 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
Landscapes
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
Abstract
PURPOSE: To find the remaining amount of a tape by detecting the rotation period of a supply tape reel and by calculating it by using a value determined according to a hub diameter of the supply reel.
CONSTITUTION: Supply-reel rotation detector 1 and take-up-reel rotation detector 2 generate pulses according to the rotation of each reel and they are counted by counters 3 and 7, whose count values are multiplied by the constant, corresponding to a tape speed, by multipliers 5 and 8 to generate signals fS and fT which are substantially the periods of both the reels. Adder 9 adds fS and fT together and supplies the sum to comparator 10 which compares it with threshold values preset on the basis of the kinds of cassettes differing in hub diameter. Value (r) found by comparator 10 and value fS from multiplier 5 are inputted to operator 12 to calculate the time of the remaining amount of the tape, which is displayed on display 14.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17224679A JPS6051185B2 (en) | 1979-12-28 | 1979-12-28 | Tape remaining amount display method |
FR8027587A FR2472813A1 (en) | 1979-12-28 | 1980-12-26 | DEVICE FOR DISCRIMINATION OR DETECTION OF THE TYPES OF COILS WITH A BAND OF VIDEO CASSETTES AND THE LIKE |
DE19803049296 DE3049296C2 (en) | 1979-12-28 | 1980-12-29 | Method for identifying the type of tape roll and apparatus for carrying out the method |
GB8041368A GB2069742B (en) | 1979-12-28 | 1980-12-29 | Tape reel discrimination system |
MY8700573A MY8700573A (en) | 1979-12-28 | 1987-12-30 | Tape reel discrimination system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17224679A JPS6051185B2 (en) | 1979-12-28 | 1979-12-28 | Tape remaining amount display method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5698763A true JPS5698763A (en) | 1981-08-08 |
JPS6051185B2 JPS6051185B2 (en) | 1985-11-12 |
Family
ID=15938323
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17224679A Expired JPS6051185B2 (en) | 1979-12-28 | 1979-12-28 | Tape remaining amount display method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6051185B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60234255A (en) * | 1984-05-07 | 1985-11-20 | Hitachi Ltd | Magnetic recording picture reproducer |
US5018040A (en) * | 1987-03-20 | 1991-05-21 | Mitsubishi Denki Kabushiki Kaisha | Tape time display device for displaying a tape remainder time |
-
1979
- 1979-12-28 JP JP17224679A patent/JPS6051185B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60234255A (en) * | 1984-05-07 | 1985-11-20 | Hitachi Ltd | Magnetic recording picture reproducer |
US5018040A (en) * | 1987-03-20 | 1991-05-21 | Mitsubishi Denki Kabushiki Kaisha | Tape time display device for displaying a tape remainder time |
Also Published As
Publication number | Publication date |
---|---|
JPS6051185B2 (en) | 1985-11-12 |
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