JPS5564672A - Display system for tape remaining time - Google Patents
Display system for tape remaining timeInfo
- Publication number
- JPS5564672A JPS5564672A JP13585078A JP13585078A JPS5564672A JP S5564672 A JPS5564672 A JP S5564672A JP 13585078 A JP13585078 A JP 13585078A JP 13585078 A JP13585078 A JP 13585078A JP S5564672 A JPS5564672 A JP S5564672A
- Authority
- JP
- Japan
- Prior art keywords
- reel
- angular speed
- mode
- tape thickness
- remaining time
- 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 display the remaining time with high precision by removing an influence of dispersion in tape thickness even in any mode, recording, reproduction, rapid traverse, or rewind mode, by making error corrections by calculating tape thickness by detecting the angular speed of a tape reel.
CONSTITUTION: The angular speed of a supply reel is detected by detecting and amplifying light from light emitting diode 51 by photo detecting transistor 52. Similarly, the angular speed of a take-up reel is detected by photo detecting transistor 55. Mode switches 24 are buttons for recording, reproduction, etc., and operating respective buttons determines selectively arithmetic modes of microcomputer 21. From supply-reel angular speed (ω1) and take-up-reel angular speed (ω2), tape thickness D is calculated and then microcomputer 21 makes error correcting calculation, so that the remaining time or use time can be calculated and displayed with high precision without being influenced by the tape thickness in any mode such as recording and reproduction.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13585078A JPS5564672A (en) | 1978-11-06 | 1978-11-06 | Display system for tape remaining time |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13585078A JPS5564672A (en) | 1978-11-06 | 1978-11-06 | Display system for tape remaining time |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5564672A true JPS5564672A (en) | 1980-05-15 |
JPS6151352B2 JPS6151352B2 (en) | 1986-11-08 |
Family
ID=15161219
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13585078A Granted JPS5564672A (en) | 1978-11-06 | 1978-11-06 | Display system for tape remaining time |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5564672A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57105873A (en) * | 1980-12-19 | 1982-07-01 | Matsushita Electric Ind Co Ltd | Magnetic recording and playback device |
JPS61214192A (en) * | 1985-03-19 | 1986-09-24 | Fujitsu Ltd | Tape control system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS589502A (en) * | 1981-07-09 | 1983-01-19 | Mitsubishi Electric Corp | Control device in rolling stock |
JPS6030034A (en) * | 1983-07-29 | 1985-02-15 | Nec Corp | Device for exposing color picture tube |
-
1978
- 1978-11-06 JP JP13585078A patent/JPS5564672A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS589502A (en) * | 1981-07-09 | 1983-01-19 | Mitsubishi Electric Corp | Control device in rolling stock |
JPS6030034A (en) * | 1983-07-29 | 1985-02-15 | Nec Corp | Device for exposing color picture tube |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57105873A (en) * | 1980-12-19 | 1982-07-01 | Matsushita Electric Ind Co Ltd | Magnetic recording and playback device |
JPS6252389B2 (en) * | 1980-12-19 | 1987-11-05 | Matsushita Electric Ind Co Ltd | |
JPS61214192A (en) * | 1985-03-19 | 1986-09-24 | Fujitsu Ltd | Tape control system |
Also Published As
Publication number | Publication date |
---|---|
JPS6151352B2 (en) | 1986-11-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS54145513A (en) | Recorder-reproducer | |
JPS52134414A (en) | Magnetic tape device | |
JPS54133308A (en) | Video signal recorder-reproducer | |
JPS5564672A (en) | Display system for tape remaining time | |
JPS539104A (en) | Cassette tape running speed detector | |
JPS5451510A (en) | Tape recorder | |
JPS5564673A (en) | Display system for tape run time of tape recorder | |
JPS5548887A (en) | Display unit for tape recorder | |
JPS55146650A (en) | Tape cassette | |
JPS5570979A (en) | Display unit for tape running time | |
JPS5221813A (en) | Cassette tape recording reproduction equipment | |
JPS5545175A (en) | Tape run position detection system | |
JPS55146673A (en) | Run position display unit | |
JPS5564677A (en) | Display unit for tape run time | |
JPS5446016A (en) | Magnetic recorder-reproducer | |
JPS57138072A (en) | Tape recorder | |
JPS5564674A (en) | Measuring method for tape run time | |
JPS5338381A (en) | Tape speed detecting mechanism | |
JPS54137308A (en) | Tape running device for magnetic recording and reproducing apparatus | |
JPS5469408A (en) | Detecting method of tape winding radii | |
JPS5469415A (en) | Detecting method of tape winding radii | |
JPS5368207A (en) | Tape recorder with miniature electronic computer | |
JPS5690455A (en) | Magnetic tape device | |
JPS5286304A (en) | Tape speed change-over system | |
JPS5562570A (en) | Display system for tape running time of tape recorder |