Claims
- 1. A magnetic recording/reproducing apparatus comprising:
- a dc voltage source outputting a predetermined dc voltage;
- a switch for switching its output between said dc voltage and an information signal to be recorded on a recording medium;
- a frequency modulator for frequency-modulating said output of said switch to output one of (i) a frequency-modulated information signal in response to said information signal and (ii) a reference signal, consisting of a single-wavelength component, in response to said dc voltage;
- means for recording and reproducing said reference signal;
- means for detecting a level of said reference signal when it is reproduced;
- means for generating a control signal in response to the level of said reference signal detected by said means for detecting to control, during an information signal recording/reproducing mode, one of a recording and a reproducing characteristic of the information signal in accordance with said control signal, whereby the recording or reproducing characteristic is set so as to match a characteristic of said recording medium.
Priority Claims (5)
Number |
Date |
Country |
Kind |
2-175131 |
Jul 1990 |
JPX |
|
2-176593 |
Jul 1990 |
JPX |
|
2-183198 |
Jul 1990 |
JPX |
|
2-184918 |
Jul 1990 |
JPX |
|
2-194613 |
Jul 1990 |
JPX |
|
Parent Case Info
This is a division of application Ser. No. 07/721,349, filed Jun. 28, 1991, and now U.S. Pat. No. 5,257,109.
US Referenced Citations (17)
Foreign Referenced Citations (11)
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Country |
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Dec 1982 |
EPX |
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EPX |
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May 1988 |
EPX |
3917576A1 |
Dec 1989 |
DEX |
59-002210 |
Jan 1984 |
JPX |
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Oct 1984 |
JPX |
61-296887 |
Dec 1986 |
JPX |
63-059287 |
Mar 1988 |
JPX |
63-146674 |
Jun 1988 |
JPX |
64-14178 |
Jan 1989 |
JPX |
2179487 |
Mar 1987 |
GBX |
Non-Patent Literature Citations (1)
Entry |
T. Bannai, et al, "Wide Band Video Signal Recorder Having Level and Linearity Corrector," IEEE Transactions on Consumer Electronics, vol. CE-32, No. 3, pp. 268-273, Aug. 1986. |
Divisions (1)
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Number |
Date |
Country |
Parent |
721349 |
Jun 1991 |
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