JPS54112604A - Magnetic picture recorder-reproducer - Google Patents
Magnetic picture recorder-reproducerInfo
- Publication number
- JPS54112604A JPS54112604A JP2006178A JP2006178A JPS54112604A JP S54112604 A JPS54112604 A JP S54112604A JP 2006178 A JP2006178 A JP 2006178A JP 2006178 A JP2006178 A JP 2006178A JP S54112604 A JPS54112604 A JP S54112604A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- control data
- audio
- modulator
- 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
Abstract
PURPOSE: To eliminate and need for new recording tracks for control data signals by recording control data signals in audio signal tracks with the non-recorded section of a magnetic tape for a specified period as a reference.
CONSTITUTION: When the reproduction video signal from a VTR 1 is applied to a video signal detecting circuit 2, the circuit 2 outputs a high level signal in the video signal section and a low level signal in the section absent of the video signal. At the time when the signal changes from high to low level, a recording control circuit 3 drives a shift register 4 with a delay of a specified time such as 0.7 second or other to send the specified control data signal to a modulator 5. The modulator 5 modulates the control data signal to the signal within the audio frequency band and records the same in the audio signal of the VTR through a changeoever circuit 6. The circuit 6 applies the output of the modulator 5 to an audio head in place of the audio input signal for about 1 second after the level of the detection signal has changed from low to high.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53020061A JPS6021412B2 (en) | 1978-02-22 | 1978-02-22 | magnetic recording and playback device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53020061A JPS6021412B2 (en) | 1978-02-22 | 1978-02-22 | magnetic recording and playback device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54112604A true JPS54112604A (en) | 1979-09-03 |
JPS6021412B2 JPS6021412B2 (en) | 1985-05-27 |
Family
ID=12016554
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53020061A Expired JPS6021412B2 (en) | 1978-02-22 | 1978-02-22 | magnetic recording and playback device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6021412B2 (en) |
-
1978
- 1978-02-22 JP JP53020061A patent/JPS6021412B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6021412B2 (en) | 1985-05-27 |
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