发明名称 |
COMMON PORCH GOING AND COMING CONTROLLING SYSTEM BASED ON THE BINARY CDMA MODE |
摘要 |
A binary CDMA-based common porch entrance controlling system is provided to transmit/receive an image signal and a voice signal between a lobby phone and a home video phone according to the binary CDMA scheme. A lobby phone(100) for controlling the entrance of a common porch has a built-in binary CDMA modem(150) to modulate an image signal and a voice signal which are generated from an external visitor into the time-division multiplexing signal waveform and transmit the modulated result. A home video phone(200) has a built-in binary CDMA modem(230) to receive the image signal and voice signal from the lobby phone. |
申请公布号 |
KR20090072032(A) |
申请公布日期 |
2009.07.02 |
申请号 |
KR20070140003 |
申请日期 |
2007.12.28 |
申请人 |
UMB COMMUNICATIONS CO., LTD. |
发明人 |
AN, JONG KYUN |
分类号 |
H04M11/00 |
主分类号 |
H04M11/00 |
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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