发明者
Rade Petrovic, Joseph M Winograd, Kanaan Jemili, Eric Metois
发表日期
1999/8/17
专利局
US
专利号
5940135
专利申请号
08858562
简介
Apparatus and methods are provided for encoding, storing and decoding auxiliary information on an analog source signal in a way which has minimal impact on the human perception of the source information when the source signal is applied to an appropriate output device, such as a speaker or a display monitor. The autocorrelation function of a host signal is modulated according to the value of an auxiliary information signal by adding a host modifying signal to the host signal. The auxiliary signal is decoded by generating the autocorrelation function of the encoded signal and extracting the auxiliary signal according to well-known signal extraction techniques.
引用总数
学术搜索中的文章
R Petrovic, JM Winograd, K Jemili, E Metois - US Patent 5,940,135, 1999