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
    • 1. 发明公开
    • 디지털 방송 시스템에서 부가데이터 전송 및 수신을 위한 장치 및 방법
    • 数字广播系统中附加数据传输和接收的方法与装置
    • KR1020130061257A
    • 2013-06-11
    • KR1020110127471
    • 2011-12-01
    • 한국전자통신연구원한국방송공사(주)넥스윌
    • 박성익임형수음호민서재현김흥묵허남호서영우이재권목하균서원기김주병
    • H04N7/015H04N7/08
    • H04B1/707H04H20/30H04H60/07H04N21/2383H04N21/4382H04N21/8126
    • PURPOSE: A device for transmitting and receiving additional data in a digital broadcast system and a method thereof are provided to transmit and receive the additional data which guarantees excellent receiving performance in a low SNR(Signal-to-Noise Ratio) and multi-path environment. CONSTITUTION: An IF(Intermediate Frequency) broadcast signal generation unit(110) generates a broadcast signal of an IF band through FEC(Forward Error Correction) and modulation of input broadcast data. An IF additional signal generation unit(120) generates additional input data as an additional signal of the IF band by using DSSS(Direct Sequence Spread Spectrum). An RF(Radio Frequency) upward conversion unit(150) converts a combination signal of the additional signal and the broadcast signal, which is generated in a signal combination unit(140), into an RF band. A transmission unit(160) transmits the combination signal of the generated RF band. [Reference numerals] (110) IF broadcast signal generation unit; (120) IF additional signal generation unit; (130) Average power control unit; (150) RF upward conversion unit; (160) Transmission unit; (AA) Broadcast data; (BB) Additional data
    • 目的:提供一种用于在数字广播系统中发送和接收附加数据的装置及其方法,用于发送和接收保证在低SNR(信噪比)和多径环境中的良好接收性能的附加数据 。 构成:IF(中频)广播信号生成单元(110)通过FEC(前向纠错)生成IF频带的广播信号,并输入广播数据的调制。 IF附加信号生成单元(120)通过使用DSSS(直接序列扩频)生成作为IF频带的附加信号的附加输入数据。 RF(射频)向上转换单元(150)将在信号组合单元(140)中产生的附加信号和广播信号的组合信号转换成RF频带。 发送单元(160)发送所生成的RF频带的组合信号。 (附图标记)(110)IF广播信号生成单元; (120)IF附加信号发生单元; (130)平均功率控制单元; (150)RF向上转换单元; (160)传输单元; (AA)广播资料; (BB)附加数据