会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明专利
    • CO-CHANNEL FEEDBACK SIGNAL CANCELLING REGENERATIVE REPEATER OF ADVANCED TELEVISION SYSTEM COMMITTEE
    • CA2721190C
    • 2014-12-02
    • CA2721190
    • 2009-04-17
    • DARBS CO LTDKOREAN BROADCASTING SYSTEM
    • KIM YONG-SOEKKANG SANG-GEESUH YOUNG-WOO
    • H04B7/15
    • Disclosed is a co-channel feedback signal cancelling regenerative repeater of the Advanced Television Systems Committee (ATSC) that extracts a predetermined reference value of feedback signal to be able to cancel the feedback signal among received signals, including: a signal receiving unit (10); a signal demodulating unit (20) that converts frequency of a received signal and demodulates it into a baseband signal; an interference equalizing unit (30) that corrects characteristics of the demodulated signal and cancels feedback signal; a channel equalizing unit (70) that compensates for channel distortion of an original signal from which the feedback signal is cancelled; a modulating unit (40) that modulates the channel distortion-compensated original signal and converts it into an analog signal; and a signal transmitting unit (50) that converts the frequency of the modulated signal, controls and amplifies its gain, and transmits a regenerative transmission signal, wherein the signal demodulating unit is configured to include a coupling that hands over the regenerative transmission signal of the signal transmitting unit separately from a system linked with the signal receiving unit (10), thereby making it possible to convert and demodulate the frequency of the regenerative transmission signal, and the interference equalizing unit (30) is configured to estimate a reference value of feedback signal from the demodulated regenerative transmission signal, thereby making it possible to remove the feedback signal among the received signals. The channel equalizing unit (70) corrects the distortion of the original signal due to a multipath and extracts the regenerative signal, thereby improving the quality of broadcasting repeating such as an image improvement of the repeated signal.
    • 4. 发明专利
    • CO-CHANNEL FEEDBACK SIGNAL CANCELLING REGENERATIVE REPEATER OF ADVANCED TELEVISION SYSTEM COMMITTEE
    • CA2721190A1
    • 2009-10-22
    • CA2721190
    • 2009-04-17
    • DARBS CO LTDKOREAN BROADCASTING SYSTEM
    • KIM YONG-SOEKKANG SANG-GEESUH YOUNG-WOO
    • H04B7/15
    • Disclosed is a co-channel feedback signal cancelling regenerative repeater of the Advanced Television Systems Committee (ATSC) that extracts a predetermined reference value of feedback signal to be able to cancel the feedback signal among received signals, including: a signal receiving unit; a signal demodulating unit that converts frequency of a received signal and demodulates it into a baseband signal; an interference equalizing unit that corrects characteristics of the demodulated signal and cancels feedback signal; a channel equalizing unit that compensates for channel distortion of an original signal from which the feedback signal is cancelled; a modulating unit that modulates the channel distortion-compensated original signal and converts it into an analog signal; and a signal transmitting unit that converts the frequency of the modulated signal, controls and amplifies its gain, and transmits a regenerative transmission signal, wherein the signal demodulating unit is configured to include a coupling that hands over the regenerative transmission signal of the signal transmitting unit separately from a system linked with the signal receiving unit, thereby making it possible to convert and demodulate the frequency of the regenerative transmission signal, and the interference equalizing unit is configured to estimate a reference value of feedback signal from the demodulated regenerative transmission signal, thereby making it possible to remove the feedback signal among the received signals. The channel equalizing unit corrects the distortion of the original signal due to a multipath and extracts the regenerative signal, thereby improving the quality of broadcasting repeating such as an image improvement of the repeated signal.