发明名称 |
Automatic tuning apparatus for a video tape recorder |
摘要 |
An automatic tuning apparatus is capable of automatically switching a tuning mode of a tuner circuit, automatically arranging various signal data in or after completion of tuning and arbitrarily and automatically arranging various signal data by a user. The apparatus comprises a SYNC discrimination circuit (11) for discriminating whether or not a video signal system is a NTSC system or another system, a tuning mode switching circuit (12) for switching a tuning mode, and a color discrimination circuit (13) for receiving a color burst signal (identic signal) for discriminating whether the video signal system is a PAL system or a SECAM system. As to the NTSC system, the PAL system, the SECAM system and a SECAM-L system, the user may not set the tuning mode of tuning means, whereby an automatic tuning apparatus imposing no burden on the user can be provided.
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申请公布号 |
US6002451(A) |
申请公布日期 |
1999.12.14 |
申请号 |
US19980215168 |
申请日期 |
1998.12.18 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
ARIKANE, NOBORU;SUGANO, TETSUO;HONGOH, KIMITOSHI;OKUGAWA, ISAMU;SHIMAMOTO, KATSUSHI;HAMADA, JUNICHI;SHIRAKASHI, KEIICHIRO |
分类号 |
H04N5/46;H04N5/50;H04N5/782;H04N7/088;H04N9/64;(IPC1-7):H04N5/50 |
主分类号 |
H04N5/46 |
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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