JPS5680862A - Remaining time display system of cassette tape - Google Patents
Remaining time display system of cassette tapeInfo
- Publication number
- JPS5680862A JPS5680862A JP15720879A JP15720879A JPS5680862A JP S5680862 A JPS5680862 A JP S5680862A JP 15720879 A JP15720879 A JP 15720879A JP 15720879 A JP15720879 A JP 15720879A JP S5680862 A JPS5680862 A JP S5680862A
- Authority
- JP
- Japan
- Prior art keywords
- reel
- tape
- remaining time
- rotating
- detecting
- 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 accurately display the remaining time of the tape without regarding to the kind of magnetic tape and the like by detecting the rotating cycle and a winding number of the tape of the feeding side reel and operating by using a predetermined prescribed constant.
CONSTITUTION: When the take-up reel 2 is rotated and the magnetic tape 3 is fed, a rotation detecting puls proportional to the rotating cycle is output from a rotation detector 7, through a rotation cycle detecting part 10, a rotating cycle of the feeding side reel 1 is detected, and through a counter part 11, the revolutional number of the reel 2 is counted. An operating part 13 obtains the first rotating speed of the reel 1, thereby prescribed constants A, B, C are obtained. The counter part 11 counts successively the revolutional number of the reel 1. The constants A, B, C and the rotating number (n) obtained in this manner are operated in an operating part 13 as shown in the formula I, the remaining time (t) is computed to be displayed on the display device 15 every moment. By such constitution, having no relation to kinds of the tape, the remaining time of the tape can be precisely displayed.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15720879A JPS6051184B2 (en) | 1979-12-03 | 1979-12-03 | Cassette tape remaining time display method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15720879A JPS6051184B2 (en) | 1979-12-03 | 1979-12-03 | Cassette tape remaining time display method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5680862A true JPS5680862A (en) | 1981-07-02 |
JPS6051184B2 JPS6051184B2 (en) | 1985-11-12 |
Family
ID=15644562
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15720879A Expired JPS6051184B2 (en) | 1979-12-03 | 1979-12-03 | Cassette tape remaining time display method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6051184B2 (en) |
-
1979
- 1979-12-03 JP JP15720879A patent/JPS6051184B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6051184B2 (en) | 1985-11-12 |
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