发明名称 INDOOR IMAGE MULTIPLEX TRANSMISSION SYSTEM
摘要 PROBLEM TO BE SOLVED: To provide many video services regardless of simple wiring form and to provide all broadcast services desired in all indoor rooms at a low cost by reducing the wiring cost and the terminal cost. SOLUTION: The system consists of a master device 1 and pluralities of terminals 2, which are wired according to the star topology using optical fibers for distribution of images. The system is provided with the master device 1 having pluralities of reception sections for a video signal each consisting of a tuner 5, an A/D converter 6, a demodulation circuit 7 and an error correction circuit 8 and having means 9, 12 that apply time base multiplexing to digital broadcast signals outputted from the reception sections and apply electrooptic conversion to the processed signals and with each terminal 2 that applies photoelectric conversion (13) to the signal distributed via the optical fiber 3, selects (16) a required digital broadcast signal from the signal that is time base multiplexed, decodes (18) video and audio signals from the broadcast signal and reproduces the video and audio signals.
申请公布号 JPH11308596(A) 申请公布日期 1999.11.05
申请号 JP19980111594 申请日期 1998.04.22
申请人 NIPPON TELEGR & TELEPH CORP <NTT> 发明人 KUBOTA MANABU;TSUBOKAWA MAKOTO;KASHIMA YOSHIO
分类号 H04N7/08;H04B10/00;H04B10/272;H04B10/556;H04N7/081;H04N7/16;H04N21/61;H04N21/647 主分类号 H04N7/08
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