发明名称 |
Magnetic reproduction apparatus for reproducing a video signal |
摘要 |
A magnetic reproduction apparatus which uses a magnetic recording medium on which frequency-modulated signals produced by frequency-modulating a carrier with video signals are recorded, and demodulates reproduced signals from the magnetic recording medium into the video signals. The apparatus includes a frequency convertor for causing the reproduced signals to shift to a higher frequency region and a pulse-count-type FM demodulator for demodulating the reproduced signals which have shifted to the higher frequency region into the video signals. This arrangement restrains the mixing of the reproduced signals in the video signals. Therefore the video signals are reproduced with lessened waveform distortion, achieving a high-quality image.
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申请公布号 |
US5377053(A) |
申请公布日期 |
1994.12.27 |
申请号 |
US19920910757 |
申请日期 |
1992.07.08 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
IWAMURA, SOICHI;AOKI, JUNICHI;NOGAMI, HIROAKI |
分类号 |
G11B20/02;G11B20/06;H04N5/922;H04N9/797;H04N9/80;H04N9/81;H04N9/87;H04N9/896;(IPC1-7):H04N5/78 |
主分类号 |
G11B20/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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