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
    • 2. 发明申请
    • DATA BROADCASTING SYSTEM USING THE HUMAN EAR PROPERTIES
    • 数据广播系统使用人类的特性
    • WO1996038927A1
    • 1996-12-05
    • PCT/FR1996000833
    • 1996-06-03
    • TELEDIFFUSION DE FRANCEBOURCET, PatriceMASSE, DenisJAHAN, Bruno
    • TELEDIFFUSION DE FRANCE
    • H04B01/66
    • H04H20/31H04B1/665
    • The invention relates to a system for broadcasting data (D), said information being transmitted in the pass-band of a broadcast audio frequency signal (S), characterized in that it comprises means for determining in at least one frequency band (F'13, ..., F'24) of the amplitude (A'13, ..., A'24) of the audio frequency signal (S) and for comparing said amplitude with an audio mask level (Nm(13), ..., Nm(24)) associated to said frequency band, means for removing frequency components from the audio frequency signal in said frequency band if the amplitude of the signal is lower than the audio mask level of said band, and means for inserting said data in said frequency band at a level lower than or equal to the audio mask level of said frequency band.
    • 本发明涉及一种用于广播数据(D)的系统,所述信息在广播音频信号(S)的通带中发送,其特征在于,它包括用于在至少一个频带(F'13 ,...,F'24)和用于将所述幅度与音频屏蔽电平(Nm(13))进行比较的幅度(A'13,...,A'24)。 与所述频带相关联的装置,用于如果所述信号的振幅低于所述频带的音频屏蔽电平,则用于从所述频带中的音频信号中去除频率分量的装置,以及用于插入所述 所述频带中的数据处于低于或等于所述频带的音频屏蔽电平的电平。