发明名称 |
Multiple audio and video signal providing apparatus |
摘要 |
A video signal provider multiplexes digital video signals for four channels and provides a signal the bandwidth of which is limited to 6 MHz by RF-modulation. An analog video signal provider provides another signal the bandwidth of which is limited to 6 MHz by RF-modulation. A digital audio signal provider multiplexes digital audio signals for 32 channels and provides another signal the bandwidth of which is limited to 6 MHz by RF-modulation. Such signals are combined and transmitted through a coaxial cable 14 to a controller. In this example, such signal providing apparatus can provide a maximum of 84 channels (=126 MHz (the bandwidth for video signal of the coaxial cable)/6 MHzx4 ch), which number is significantly larger than the 20 channels provided in the prior art.
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申请公布号 |
US5666151(A) |
申请公布日期 |
1997.09.09 |
申请号 |
US19960709881 |
申请日期 |
1996.09.09 |
申请人 |
SONY CORPORATION |
发明人 |
KONDO, YOSHIYUKI;TAGAWA, KOICHI;SHIGETOMI, TETSU |
分类号 |
H04N5/44;H04N5/46;H04N5/60;H04N7/10;H04N7/12;H04N7/58;(IPC1-7):H04N7/10 |
主分类号 |
H04N5/44 |
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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