Coded data generation or conversion – Digital code to digital code converters – To or from differential codes
Patent
1993-09-10
1997-01-21
Hoff, Marc S.
Coded data generation or conversion
Digital code to digital code converters
To or from differential codes
348409, 348415, H04N 1102
Patent
active
055963218
ABSTRACT:
Known systems based on stereoscopic video coding and video decoding code with inadequate efficiency because the left-hand picture and the right-hand picture are coded and decoded independently of one another by means of the encoders present in the system. As a result of providing one encoder with switching means to which a signal representing the left-hand picture and a signal representing the right-hand picture are fed, said encoder is able to base the prediction either on the left-hand picture or the right-hand picture, and this improves the prediction and, consequently, the efficiency of the coding. As a result of designing the switching means, according to one embodiment, for the adjustment of the ratio of the signal representing the left-hand picture and the signal representing the right-hand picture and for the subsequent addition of the two adjusted signals, a still greater advantage is achieved in the prediction with the correct ratio, and this results in a further improvement in the efficiency of the (total) coding.
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Hekstra Andries P.
Koster Arian
Hoff Marc S.
Koninklijke PTT Nederland N.V.
Michaelson Peter L.
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