JPS5629876A - Time counter for magnetic tape - Google Patents
Time counter for magnetic tapeInfo
- Publication number
- JPS5629876A JPS5629876A JP10273379A JP10273379A JPS5629876A JP S5629876 A JPS5629876 A JP S5629876A JP 10273379 A JP10273379 A JP 10273379A JP 10273379 A JP10273379 A JP 10273379A JP S5629876 A JPS5629876 A JP S5629876A
- Authority
- JP
- Japan
- Prior art keywords
- tape
- reel
- output
- unit
- signal
- 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.)
- Pending
Links
Abstract
PURPOSE: To make accurate the recording and reproduction with a simple operation, by providing the unit producing signal every unit revolution of reel and measuring the tape winding diameter wound on the reel with photoelectric type, and displaying the tape length and performance time via the operation circuit processing the output signal of the units.
CONSTITUTION: The unit revolution signal generator 11 consisting of the magnetic piece 11a sticked to the disc 4a of the winding reel 4 and the proximity switch 11b is provided. Further, the light source 12 and the photodetector 13 are provided between the tape winding section 8a, and the output of the photodetector 13 detects the tape winding diameter. The output signal is fed to the tape winding diameter calculation circuit, the tape length is calculated at the tape length sum calculation circuit via the output from the reel unit revolution signal and the reel revolution number output circuit, and the tape length is displayed on the display unit. Further, the tape playing time is displayed via the tape playing conversion circuit. Accordingly, the operation is simple, the production of noise is less, and accurate recording and playback can be made.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10273379A JPS5629876A (en) | 1979-08-14 | 1979-08-14 | Time counter for magnetic tape |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10273379A JPS5629876A (en) | 1979-08-14 | 1979-08-14 | Time counter for magnetic tape |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5629876A true JPS5629876A (en) | 1981-03-25 |
Family
ID=14335440
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10273379A Pending JPS5629876A (en) | 1979-08-14 | 1979-08-14 | Time counter for magnetic tape |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5629876A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5817578A (en) * | 1981-07-24 | 1983-02-01 | Akai Electric Co Ltd | Display device for running amount of tape |
JP2009298511A (en) * | 2008-06-11 | 2009-12-24 | Tokyo Automatic Machinery Works Ltd | Residual amount detection device of film reel |
-
1979
- 1979-08-14 JP JP10273379A patent/JPS5629876A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5817578A (en) * | 1981-07-24 | 1983-02-01 | Akai Electric Co Ltd | Display device for running amount of tape |
JP2009298511A (en) * | 2008-06-11 | 2009-12-24 | Tokyo Automatic Machinery Works Ltd | Residual amount detection device of film reel |
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