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BROADCASTING/COMMUNICATION INTEGRATING SYSTEM FOR EXPANDING A SUBSCRIBER SYSTEM BY USING LOW-PRICED OPTICAL MODULES, ESPECIALLY IN CONNECTION WITH CONFIGURING A LOW-PRICED OPTICAL CHANNEL BETWEEN A MAIN SET TOP BOX AND A SUB SET TOP BOX AND BETWEEN THE SUB SET TOP BOX AND OTHER SUB SET TOP BOX
BROADCASTING/COMMUNICATION INTEGRATING SYSTEM FOR EXPANDING A SUBSCRIBER SYSTEM BY USING LOW-PRICED OPTICAL MODULES, ESPECIALLY IN CONNECTION WITH CONFIGURING A LOW-PRICED OPTICAL CHANNEL BETWEEN A MAIN SET TOP BOX AND A SUB SET TOP BOX AND BETWEEN THE SUB SET TOP BOX AND OTHER SUB SET TOP BOX
PURPOSE: A broadcasting/communication integrating system for expanding a subscriber system by using low-priced optical modules is provided to configure an optical channel between a main set top box and a sub set top box and between the sub set top box and other set top box, thereby overcoming a large-scale connector and a large cable caused by parallel data lines. CONSTITUTION: A main set top box(300) receives a signal transmitted from an ONU through a main optical module for data inputting/outputting, applies the received signal to a CDR(Clock and Data Recovery) unit(306) to pass through a data recovery/timing extract process, and applies the signal to a sub optical module, then transmits the signal to sub a set top box(310) through the low-priced sub optical module. A sub set top box(320) is connected with the main set top box(300) and the sub set top box(310), receives the transmitted signal to apply the signal to a CDR unit(326), passes through a data recovery/timing extract process to apply the signal to a low-priced sub optical module, and transmits the signal to other sub set top box.
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