Decoding issues in the ACTV system

Decoding issues in the ACTV system

The advanced compatible television (ACTV) system is a proposal for the single-channel transmission of widescreen enhanced-definition television (EDTV) images. A widescreen high-definition source is encoded into a signal that is NTSC-compatible. Existing NTSC receivers display a selected 4:3 portion...

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Veröffentlicht in:IEEE transactions on consumer electronics 1988-02, Vol.34 (1), p.111-120
Hauptverfasser: Isnardi, M.A., Smith, T.R., Roeder, B.J.
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Broadcasting. Videocommunications. Audiovisual
Decoding
Displays
Exact sciences and technology
HDTV
Image coding
Image resolution
Proposals
Radio frequency
Signal resolution
Spatial resolution
Telecommunications
Telecommunications and information theory
Television
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Beschreibung
Zusammenfassung:The advanced compatible television (ACTV) system is a proposal for the single-channel transmission of widescreen enhanced-definition television (EDTV) images. A widescreen high-definition source is encoded into a signal that is NTSC-compatible. Existing NTSC receivers display a selected 4:3 portion of the widescreen image with standard NTSC resolution. A new widescreen receiver is proposed, tuned to the same 6 MHz RF channel, that displays a widescreen image with a resolution in excess of 400 lines/picture height in both spatial dimensions. The encoding process is reviewed and the recovery of various signal components to produce the widescreen image in the ACTV receiver is discussed.< >
ISSN:0098-3063
1558-4127
DOI:10.1109/30.75367