Claims
- 1. An apparatus for reproducing an information signal modulating a carrier signal recorded on a magnetic tape, a first portion of said signal being boosted in level in accordance with a characteristic of said information signal, said apparatus comprising:
- playback means for reproducing said information signal from said magnetic tape;
- level detector means receiving said information signal for detecting a level of said reproduced signal and producing a level detected signal;
- first and second gating means for respectively gating said level detected signal during a first time period corresponding to said first portion of said signal being boosted and during a second time period corresponding to a second portion of said signal in which a level of said signal is not boosted and producing first and second gated signals, respectively;
- comparing means for making a comparison of levels of said first and second gated signals with each other, and producing an output signal based on said comparison; and
- judging means for judging said characteristic of said information signal in accordance with the output signal of said comparing means and producing a control output signal in accordance with said characteristic of said information signal.
- 2. An apparatus according to claim 1 wherein said information signal comprises an audio signal.
- 3. An apparatus according to claim 2 wherein said characteristic of said audio signal is that said audio signal is a bilingual signal.
- 4. An apparatus according to claim 3 wherein said first portion is a vertical blanking period.
- 5. An apparatus according to claim 1 further comprising processor means for processing said reproduced signal.
- 6. An apparatus according to claim 5 wherein said processor means comprises switching means controlled by the control output signal of said judging means and an adder and a subtracter selectively connectable to said switching means in accordance with said control output signal.
- 7. An apparatus according to claim 2 wherein said carrier signal is frequency-modulated by said audio signal.
- 8. An apparatus according to claim 7 wherein said audio signal comprises a first audio signal and a second audio signal.
- 9. An apparatus according to claim 8 wherein said first and second audio signals are recorded with a luminance signal and chrominance signal.
- 10. An apparatus according to claim 9 wherein said first and second audio signals are further recorded with a tracking signal.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2-162297 |
Jun 1990 |
JPX |
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Parent Case Info
This is a continuation of application Ser. No. 07/715,646, filed Jun. 14, 1991 and now abandoned.
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Continuations (1)
|
Number |
Date |
Country |
Parent |
715646 |
Jun 1991 |
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