JPS567273A - Magnetic recording and reproducing device - Google Patents
Magnetic recording and reproducing deviceInfo
- Publication number
- JPS567273A JPS567273A JP8135579A JP8135579A JPS567273A JP S567273 A JPS567273 A JP S567273A JP 8135579 A JP8135579 A JP 8135579A JP 8135579 A JP8135579 A JP 8135579A JP S567273 A JPS567273 A JP S567273A
- Authority
- JP
- Japan
- Prior art keywords
- microcomputer
- reel
- time corresponding
- tape
- input
- 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 perform operations such as mode switching easily and accurately, by displaying the time corresponding to the tape residual quantity or the time corresponding to the tape use quantity and by holding the value just before the state.
CONSTITUTION: The light of LED21 is received through the slit of supply reel 9 by phototransistor 23, and the input voltage to microcomputer 15 is made high-level, and the input voltage to microcomputer 15 is made low-level except light receiving. Since microcomputer 15 has reference clocks due to oscillator 17, the input interval of the high level is calculated to obtain angle speed W1 of reel 9. The light of LED29 is received through the slit of take-up reel 11 by phototransistor 31, and angle speed W2 of reel 11 is obtained similarly. Next, microcomputer 15 calculates the time corresponding to the tape residual quantity or the tape use quantity according to prescribed program and calculation expression, and this value is input to digital number display tube 36 through resistance 38W44, and display tube 36 is driven by driver 37. As a result, operations such as mode switching can be performed easily and accurately.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8135579A JPS567273A (en) | 1979-06-29 | 1979-06-29 | Magnetic recording and reproducing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8135579A JPS567273A (en) | 1979-06-29 | 1979-06-29 | Magnetic recording and reproducing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS567273A true JPS567273A (en) | 1981-01-24 |
JPS6259393B2 JPS6259393B2 (en) | 1987-12-10 |
Family
ID=13744039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8135579A Granted JPS567273A (en) | 1979-06-29 | 1979-06-29 | Magnetic recording and reproducing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS567273A (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS538123A (en) * | 1976-07-10 | 1978-01-25 | Sankyo Kougaku Kougiyou Kk | Long web such as film used length memory |
JPS5434521A (en) * | 1976-10-22 | 1979-03-14 | Kimura Kiso Koji Kk | Enclosed shielding excavator |
JPS5813991A (en) * | 1981-07-18 | 1983-01-26 | Takasago Thermal Eng Co Lts | Latent heat accumulator |
-
1979
- 1979-06-29 JP JP8135579A patent/JPS567273A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS538123A (en) * | 1976-07-10 | 1978-01-25 | Sankyo Kougaku Kougiyou Kk | Long web such as film used length memory |
JPS5434521A (en) * | 1976-10-22 | 1979-03-14 | Kimura Kiso Koji Kk | Enclosed shielding excavator |
JPS5813991A (en) * | 1981-07-18 | 1983-01-26 | Takasago Thermal Eng Co Lts | Latent heat accumulator |
Also Published As
Publication number | Publication date |
---|---|
JPS6259393B2 (en) | 1987-12-10 |
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