JPS5641568A - Display system for run time of cassette tape - Google Patents
Display system for run time of cassette tapeInfo
- Publication number
- JPS5641568A JPS5641568A JP11555079A JP11555079A JPS5641568A JP S5641568 A JPS5641568 A JP S5641568A JP 11555079 A JP11555079 A JP 11555079A JP 11555079 A JP11555079 A JP 11555079A JP S5641568 A JPS5641568 A JP S5641568A
- Authority
- JP
- Japan
- Prior art keywords
- tape
- reel
- run time
- take
- counter
- 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
Abstract
PURPOSE: To display the run time accurately without reference to the kind, thickness, etc., of a tape by using detection information on the rotational period of a take- up reel and on how much the tape is taken up and a previously stored constant.
CONSTITUTION: After counter part 11 is reset by counter reset key 12, feeding tape 3 by rotating take-up reel 2 rotates reel rotary shaft 6 to output a detection pulse, proportional to the rotational period from rotation detector 7 to rotation detection part 10 and counter part 11. Then, detection part 10 detects the rotational period of reel 2 while counter part 11 counts its rotational frequency and on the basis of their outputs, arithmetic part 13 calculates tape run time (t) from t=n(VR+B)/2, where (n) is the take-up number of the tape, VR is the rotational speed of the take- up reel and B is a constant, which can be obtained at detection part 10 by calculation in recording and reproduction. This time (t) is sent to display part 15 via key 14 to display the tape run time with accuracy.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11555079A JPS6053392B2 (en) | 1979-09-08 | 1979-09-08 | Cassette tape running time display method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11555079A JPS6053392B2 (en) | 1979-09-08 | 1979-09-08 | Cassette tape running time display method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5641568A true JPS5641568A (en) | 1981-04-18 |
JPS6053392B2 JPS6053392B2 (en) | 1985-11-25 |
Family
ID=14665308
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11555079A Expired JPS6053392B2 (en) | 1979-09-08 | 1979-09-08 | Cassette tape running time display method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6053392B2 (en) |
-
1979
- 1979-09-08 JP JP11555079A patent/JPS6053392B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6053392B2 (en) | 1985-11-25 |
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