Title:
【発明の名称】デ-タ周波数を低減した信号分離装置
Document Type and Number:
Japanese Patent JPS59501529
Kind Code:
A
Abstract:
The signal separation arrangement separates frequency interleaved signal components of a video signal one of which is modulated as a double sideband modulated component of a subcarrier frequency. A video signal is sampled by a digital-to-analog converter (10). The resultant signal samples are applied to a bandpass filter (12). The bandpass filter produces a filtered signal restricted to a given passband of the original video band over which the double-sideband-modulated component is modulated. The filtered information in the passband is comb-filtered by a comb filter (20) operating on selected ones of the bandpass-filtered samples in response to a subsampling clock signal. The subsampling clock frequency is less than or equal to the subcarrier frequency. The comb filter comprises a shift register (22) and a signal combining circuit (24). Comb filtered samples, produced at the subsampling clock rate, correspond to one of the interleaved signal components.
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Inventors:
Balaban Alvin Lieu-Ben
Steckla Stay-Bung Alan
Steckla Stay-Bung Alan
Application Number:
JP50280283A
Publication Date:
August 23, 1984
Filing Date:
August 01, 1983
Export Citation:
Assignee:
Arushi-e-ko-pole-shiyon
International Classes:
H03H15/00; H04N9/00; H04N9/64; H04N9/78; H04N11/06; (IPC1-7): H04N9/38
Attorney, Agent or Firm:
Satoshi Shimizu