专利汇可以提供Two-way community antenna television system专利检索,专利查询,专利分析的服务。并且A two-way community antenna or closed circuit television system or community cable television system which permits two-way communication (including voice communication) through a transmission center from and between various terminals, such as schools, homes, hospitals, doctor''s offices, community centers, industrial sites and the like. A control center including a properly programmed digital computer continuously interrogates the system over a forward control channel and receives responses from the terminals over a return control channel. The computer also controls transmissions between the transmission center and the terminals and between the terminals via the transmission center. Each terminal is provided with a control unit for communication with the control center. The system utilizes an appropriate bridging amplifier or other suitable means to convert to a two-way link a portion of the transmission cable interconnecting the transmission center and the terminals. The system also contemplates the use of channel allocations between 0 and 300 MHz, it being practical to allocate in this range certain portions for return transmission channels for programs originating at the terminals and certain portions for extra forward transmission channels for special programs originating at the transmission center.,下面是Two-way community antenna television system专利的具体信息内容。
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