Trick play reproduction of MPEG encoded signals
OwnerMary Lafuze Comerinventor
Life of this patent
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Abstract
An apparatus for reproducing a digitally encoded signal. The apparatus comprises a decoding means for decoding the digitally encoded signal to form a specific picture. A memory means is coupled to the decoding means for storing the specific picture. A control means is controllably coupled to the memory means, wherein a first mode the control means controls the memory means for storing a frame of the specific picture and responsive to a second mode the control means controls the memory means for storing only one field of the specific picture.
Claims16
An apparatus for reproducing a digitally encoded signal from a medium, comprising:
- a decoder responsive to said digitally encoded signal for decoding a specific picture;
- a memory coupled to said decoder for storing said specific picture;
- and,
- a controller for said memory for storing in a first mode a top field and a bottom field comprising said specific picture and in a second mode for storing only one of said top and bottom fields comprising said specific picture.
A method for reverse reproduction of a digitally encoded signal recorded on a medium, said digitally encoded signal being representative of a plurality of groups of pictures, each group of said plurality of groups including at least one I type picture and at least one P type picture, said method comprising the steps of:
- a) storing a single field of said I type picture from a first group of pictures of said plurality of groups of pictures;
- b) storing a single field of an I type picture decoded from a second group of pictures preceding said first group of pictures of said plurality of groups of pictures;
- c) storing a single field of a first P type picture decoded from said second group of pictures preceding said first group of pictures;
- d) storing a single field of a second P type picture decoded from said second group of pictures preceding said first group of pictures;
- and,
- e) decoding a field of a third P type picture recovered from said second group of pictures preceding said first group of pictures.
Dependencies are inferred from the claim text.