发明名称 DIGITALMOTTAGARE
摘要 An analog carrier signal and its sidebands contain modulated information which is to be digitally encoded and processed. Demodulation and digital encoding is accomplished in a single process by an analog-to-digital converter, which samples the analog signals in response to a sampling signal of a frequency which is at least twice the bandwidth of the band of frequencies containing the carrier signal and its information-bearing sidebands. The analog signal samples are digitally encoded, producing a band of digital information signals corresponding to baseband signal components. When used in a television receiver to produce digital signal samples, the band of analog signals may include both sound and picture carriers and their audio and video information. By controlling the phase and frequency of the analog carrier signal in relation to the color subcarrier signal, and deriving the sampling signal from the analog carrier, an ease in video signal demodulation is provided.
申请公布号 FI830512(L) 申请公布日期 1983.08.23
申请号 FI19830000512 申请日期 1983.02.15
申请人 RCA CORPORATION 发明人 STECKLER, STEVEN ALAN;BALABAN, ALVIN REUBEN
分类号 H04N5/44;H04N5/455;H04N9/00;H04N9/64 主分类号 H04N5/44
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