发明名称 Transmodulator with dynamically selectable channels
摘要 A system for redistributing a broadband audio-visual-data signal to a multiplicity of receiver units within a multiple dwelling unit (MDU) includes a main receiving antenna that receives a broadband video/audio/data signal having a number of individual program multiplex signals therein and a transmodulator device that transmodulates a selected subset of the individual program multiplex signals associated with the broadband signal from a first modulation scheme to a second modulation scheme. The transmodulated signals are broadcast over a cable network, along with terrestrial signals, to individual receiver units at the MDU. The receiver units send requests for user-selected ones of the individual program multiplex signals to the transmodulator device, demodulate the transmodulated and/or terrestrial signals and provide user-specified channels to television sets for display.
申请公布号 US6493873(B1) 申请公布日期 2002.12.10
申请号 US19980008879 申请日期 1998.01.20
申请人 HUGHES ELECTRONICS CORPORATION 发明人 WILLIAMS JIM C.
分类号 H04N5/268;H04H20/63;H04H40/90;H04N7/08;H04N7/081;H04N7/173;H04N7/20;H04N7/24;(IPC1-7):H04N7/18 主分类号 H04N5/268
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