发明名称 |
Apparatus and method for an enhanced PCS communication system |
摘要 |
The present application relates to the use of the vertical blanking interval ("VBI") to broadband communications including digital data transmission on the VBI or for a dual VBI/PCS System Capable of enhancing rapid deployment of wireless VBI communications or PCS services to a remote transceiver where no or marginally profitable infrastructure exists. Specifically, the present invention provides a wireless digital communication system having a broadcast interface for encoding message information on the vertical blanking interval (VBI) of a video signal, the message information is encoded to a VBI format so as to form a pre-formatted signal. A broadcast device for transmitting an out-going signal having the pre-formatted signal modulated or otherwise embedded in the VBI of the video signal. The pre-formatted signal is received from the broadcast interface and is transmitted on a carrier of the out-going signal. At least one transceiver exists for receiving the out-going signal and for transmitting a return signal on the carrier of the out-going signal, the transceiver detects clock information relating to the synchronization bits of the broadcast and further includes a decoder for identifying the pre-formatted signal from the out-going signal so as to allow for the decoding of the message information and for displaying such message information to a user of the transceiver; an input device for inputting return message information; an encoding device for encoding the return message information; and a VBI modulating device for modulation or otherwise inserting the return signal on the out-going signal of the broadcast. The present invention further includes an antenna means for detecting the return signal that is supplied to a return signal processor (RSP). The RSP detects the return signal from the carrier of the out-going signal of the broadcast and a message rocessor (MESP) decodes the message information from the return signal. The MESP is adapted to transmit the message information to public or private communications networks or public switches.
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申请公布号 |
US6219537(B1) |
申请公布日期 |
2001.04.17 |
申请号 |
US19980063279 |
申请日期 |
1998.04.20 |
申请人 |
VBI-2000, L.L.C. |
发明人 |
JAMES RANDY;NASH, II DALLAS L.;ROGERS JIMMY L. |
分类号 |
H04H20/30;H04N7/088;H04Q7/22;(IPC1-7):H04Q7/20;H04Q7/35 |
主分类号 |
H04H20/30 |
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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