H - Electricity – 04 – N
Patent
H - Electricity
04
N
352/10.31
H04N 9/79 (2006.01) H04N 5/926 (2006.01) H04N 7/26 (2006.01) H04N 7/50 (2006.01) H04N 5/783 (2006.01)
Patent
CA 1320266
PHN.11.768 55 9.10.86 ABSTRACT: Method of and apparatus for recording and/or reproducing video information in/from a record carrier, and record carrier obtained by means of the method. In a method of recording video information in a record carrier (10), each picture (1) of NxM picture elements being divided into subpictures (2) of nxm picture elements, the video information of each subpicture is encoded in accordance with a transform coding (Ti) and recorded on the record carrier. Moreover, corresponding subpictures 11.1, 11.2, Fig. 4a) of two pictures (B1, B2) are compared with each other. To both subpictures a motion code (mci) is assigned, which motion codes are the same if the sub- pictures do not differ substantially from one another, but which are not the same (mc1, mc2, Fig.4c) if the subpictures (16.2, 16.3) differ substantially from each other. The motion is recorded on the record carrier (10) together with the coded information of the subpicture. Moreover, different transform codings (T1, T2, Fig.4a) may be applied to the subpictures. A higher-order transform coding yields a more accurate information of the subpicture which is encoded (Fig. 3). The associated trans- form code (T1) is also recorded on the record carrier (10). Further, a method of reproducing video information from the record carrier (10) is described (Figs, 5, 6) and apparatuses for carrying out the two methods are described (Figs. 7 to 11).
538896
Fetherstonhaugh & Co.
Heijnemans Werner A. L.
Philips Electronics N.v.
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