Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1988-09-07
1990-03-27
Britton, Howard W.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358150, 358149, 358153, H04N 5073
Patent
active
049125494
ABSTRACT:
Apparatus and method of synchronizing the component signals of a multi-component augmented television signal between its generation reception are disclosed. The disclosed apparatus includes circuitry which generates a training signal that indicates the position of the first pixel in each horizontal line interval of the video signal. This training signal is inserted into one horizontal line interval of the active video signal for transmission. The receiver includes circuitry which separates the training signal and derives a timing signal from it. The timing signal is used to define the pixel positions of various decoded components of the received video signal to facilitate their combination. The timing signal is also used to align the color subcarrier signal and to generate other carrier and subcarrier signals used in the decoding process. Two training signals are disclosed: a pseudo-random noise sequence and a time-reversed, all-pass filtered, raised-cosine 2T pulse.
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Altman Ted N.
Chao Tzy-Hong
Dieterich Charles B.
Britton Howard W.
Hayes James B.
Herrmann Eric P.
Powell Mark R.
RCA Licensing Corporation
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