Telephone pillow

The utility model relates to a wire concentrating (distributing) device of a filtering limiting and descending channel, which is composed of a frequency band divider 1, a magnetic core coupler 2, a descending attenuator 3, a descending amplifier 4, a data demodulator 5, a CPU unit 6, a decoder 7, a...

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Bibliographic Details
Main Author SHUTIAN REN
Format Patent
LanguageEnglish
Published 24.09.2003
Edition7
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:The utility model relates to a wire concentrating (distributing) device of a filtering limiting and descending channel, which is composed of a frequency band divider 1, a magnetic core coupler 2, a descending attenuator 3, a descending amplifier 4, a data demodulator 5, a CPU unit 6, a decoder 7, a signal distributing control unit 8, a frequency band divider 9, an ascending attenuator 10, an ascending amplifier 11, an electronic detector 12, an alarm indicator 13 and a voltage-stabilizing power supply 15. The utility model is characterized in that a descending channel composed of the descending attenuator 3 and the descending amplifier 4 is connected with a filter 14 so that descending frequencies are carried out with selective reception. The utility model enhances the carrier-to-noise ratio and the broadband network speed, can carry out selective reception for the descending frequencies and can also enhance the safety of networks. The utility model is mainly used for transmitting network signal.
Bibliography:Application Number: CN2002276795U