Back to results
US 6,584,200 B1Granted
Image scrambling method and apparatus therefor
AssigneeNEC Corporation
InventorKazuyoshi Tanaka
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeNEC Corporation
InventorKazuyoshi Tanaka
Estimating the term…
The present invention relates to an image scrambling method and apparatus. The apparatus comprises a first dividing decoder for dividing the MPEG encoded image data stream into a plurality of data segments (for example, macro blocks or slices); at least one arrangement table recording arrangement information to be used for arranging the data segments; an arrangement circuit for arranging the data segments output from the first dividing decoder in accordance with the information recorded in the arrangement table to output a scrambled image data stream; a second dividing decoder for dividing the scrambled image data stream into a plurality of data segments; at least one rearrangement table recording rearrangement information to be used for rearranging the data segments output from the second dividing decoder; and a rearrangement circuit for rearranging the data segments output from the second dividing decoder in accordance with the rearrangement information recorded in the rearrangement table.
An image scrambling apparatus for scrambling and unscrambling of an MPEG encoded image data stream, comprising:
An image scrambling method for scrambling an MPEG encoded image data stream, comprising the steps of:
A computer-readable medium containing computer-readable instructions, comprising:
A computer-readable medium containing computer-readable instructions, comprising:
Dependencies are inferred from the claim text.