G - Physics – 06 – T
Patent
G - Physics
06
T
350/3
G06T 3/60 (2006.01) H04N 5/262 (2006.01) H04N 7/00 (2006.01)
Patent
CA 1235478
32 ABSTRACT: An arrangement for rotating television pictures comprises a frame store into which a rotated input picture is written under the control of a write address generator which is in turn controlled by a rotation control and timing generator. A video input signal is applied at input and fed to a splitting circuit which produces streams of even and odd numbered samples, both at the sampling rate. These streams of samples are fed to an interpolator where they are used to generate samples to be written into the store. The store is split into four areas which are arranged to hold respectively field 1 odd samples, field 1 even samples, field 2 odd samples, and field 2 even samples. The write address generator is con- trolled so that samples from field 1 of the input signal are fed only into the areas of the store read by the read address generator during field 1 of the output signal and samples from field 2 of the input signal are fed only into the areas of the store read by the read address generator durning field 2 of the output signal.
490538
Koninklijke Philips Electronics N.v.
Van Steinburg C.e.
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