JPS55113146A - Detecting method for fixed part on magnetic tape in magnetic recording and reproducing device - Google Patents
Detecting method for fixed part on magnetic tape in magnetic recording and reproducing deviceInfo
- Publication number
- JPS55113146A JPS55113146A JP1931079A JP1931079A JPS55113146A JP S55113146 A JPS55113146 A JP S55113146A JP 1931079 A JP1931079 A JP 1931079A JP 1931079 A JP1931079 A JP 1931079A JP S55113146 A JPS55113146 A JP S55113146A
- Authority
- JP
- Japan
- Prior art keywords
- tape
- speed
- erase head
- head
- output
- 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 reduce a load and to stabilize reproduction output while a tape is running at a high speed, by making an erase head in slide contact with the magnetic tape during the high-speed run of the tape, and then by detecting a fixed part on the tape by the output of this erase head.
CONSTITUTION: In high-speed take-up operation, tube-chassis 5 moves slightly in comparison wth a position for reproduction and recording/reproducing head 11 is positioned where it does not come in contact with tape pad 17 of cassette 16. However, erase head 12 is set where contact pressure to the tape is kept enough to generate sufficient playback output. As a result, there is a little influence of tape pad 17 and a load on the tape is reduced. Connections among recording/reproducing head 11, erase head 12 and reproducing amplifier 18 are switched by switch 19 interlocking with sub-chassis 5 and in high-speed take-up playback mode, sub- chassis 5 is moved backward slightly from its playback position to change over switch 19, so that erase head 12 will be connected to reproducing amplifier 18. Thus, reduction of the load in high-speed tape run mode and stabilization of playback output are both attained.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1931079A JPS55113146A (en) | 1979-02-20 | 1979-02-20 | Detecting method for fixed part on magnetic tape in magnetic recording and reproducing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1931079A JPS55113146A (en) | 1979-02-20 | 1979-02-20 | Detecting method for fixed part on magnetic tape in magnetic recording and reproducing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55113146A true JPS55113146A (en) | 1980-09-01 |
Family
ID=11995837
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1931079A Pending JPS55113146A (en) | 1979-02-20 | 1979-02-20 | Detecting method for fixed part on magnetic tape in magnetic recording and reproducing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55113146A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57114511U (en) * | 1981-01-07 | 1982-07-15 | ||
JPS6022754A (en) * | 1983-07-18 | 1985-02-05 | Olympus Optical Co Ltd | Pinch roller and magnetic head position controller of tape recorder |
EP0786764A1 (en) * | 1996-01-26 | 1997-07-30 | Philips Patentverwaltung GmbH | Magnetic tape cassette apparatus |
-
1979
- 1979-02-20 JP JP1931079A patent/JPS55113146A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57114511U (en) * | 1981-01-07 | 1982-07-15 | ||
JPS6022754A (en) * | 1983-07-18 | 1985-02-05 | Olympus Optical Co Ltd | Pinch roller and magnetic head position controller of tape recorder |
EP0786764A1 (en) * | 1996-01-26 | 1997-07-30 | Philips Patentverwaltung GmbH | Magnetic tape cassette apparatus |
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