发明名称 |
Picture reproducing apparatus in a helical scanning video tape recorder |
摘要 |
A picture reproducing apparatus for a helical scanning video tape recorder including an impedance transformer; a video head connected to the input of the impedance transformer; a resonance circuit connected to the output of the impedance transformer; a pre-amplifier connected to the output of the resonance circuit; a feedback resistor connected between the junction of the pre-amplifier and resonance circuit and the output of the pre-amplifier; and an output terminal connected to the output of the pre-amplifier. The impedance transformer has the output impedance four times as high as the input impedance thereof.
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申请公布号 |
US4497004(A) |
申请公布日期 |
1985.01.29 |
申请号 |
US19820384742 |
申请日期 |
1982.06.02 |
申请人 |
HITACHI, LTD. |
发明人 |
SHIBATA, AKIRA;KONOSU, MAKOTO;TAMURA, TEIZO;HIROSE, KOICHI;MIURA, KUNIAKI;KOJIMA, NOBORU;KOMATSU, KEIICHI |
分类号 |
G11B20/02;H04N5/931;(IPC1-7):G11B5/52 |
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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