JPS5478108A - Magnetic recorder-reproducer - Google Patents
Magnetic recorder-reproducerInfo
- Publication number
- JPS5478108A JPS5478108A JP14495177A JP14495177A JPS5478108A JP S5478108 A JPS5478108 A JP S5478108A JP 14495177 A JP14495177 A JP 14495177A JP 14495177 A JP14495177 A JP 14495177A JP S5478108 A JPS5478108 A JP S5478108A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic tape
- speed
- circuit
- recording
- switching control
- 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
Landscapes
- Television Signal Processing For Recording (AREA)
Abstract
PURPOSE: To prolong the recordable time of magnetic tape by providing a magnetic tape running speed decreasing means and carrier deviating means.
CONSTITUTION: A switching control system for 2 hours and 4 hours consisting of a 2-4 switching control circuit 15 and speed switching circuit 16 is provided. At the time of diagonally guiding and running a magnetic tape on a rotary head and forming oblique recording tracks on the magnetic tape, the speed switching circuit 16 is controlled by operating the 2-4 switching control circuit 15 to change the rotating speed of a capstan drive motor 8, by which the running speed of the magnetic tape 17 is made 1/2 that at the 4-hour recording and 2-hour recording. At the same time, the frequency of the carrier of an FM modulaton circuit 2 is made 1/2f H(2n+1) [n is integer, f H is horizontal synchronizing signal frequency] at every 1 track of the magnetic tape 17. Thereby, twice longer time recording is made possible with the magnetic tape 17 of the same length.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14495177A JPS5478108A (en) | 1977-12-05 | 1977-12-05 | Magnetic recorder-reproducer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14495177A JPS5478108A (en) | 1977-12-05 | 1977-12-05 | Magnetic recorder-reproducer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5478108A true JPS5478108A (en) | 1979-06-22 |
Family
ID=15373975
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14495177A Pending JPS5478108A (en) | 1977-12-05 | 1977-12-05 | Magnetic recorder-reproducer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5478108A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62154203A (en) * | 1985-12-26 | 1987-07-09 | Matsushita Electric Ind Co Ltd | Video signal recording device |
-
1977
- 1977-12-05 JP JP14495177A patent/JPS5478108A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62154203A (en) * | 1985-12-26 | 1987-07-09 | Matsushita Electric Ind Co Ltd | Video signal recording device |
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