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US 7,742,522 B2Granted
Signal compressing system
AssigneeSamsung Electronics Co., Ltd.
InventorsJe-Chang Jeong, Hen-Hee Mun
Life of this patent
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Abstract
A multi-scanner scans a signal according to several different patterns. A scanning pattern selector determines which scanning pattern produced the most efficient coding result, for example, for runlength coding, and outputs a coded signal, coded most efficiently, and a selection signal which identifies the scanning pattern found to be most efficient.
Claims1
A scanning pattern selecting method in a video signal decompression system, the method comprising the steps of:
- receiving a scanning mode signal from a demultiplexer which extracts variable length coded data and the scanning mode signal from a received signal in a video signal decompression system, the received signal comprising the variable length coded data and the scanning mode signal, the scanning mode signal not being variable length coded;
- and
- selecting a scanning pattern from a plurality of scanning patterns by the scanning mode signal,
- wherein the selected scanning pattern reorders a set of video spatial frequency coefficients of an individual sub-block to an original order, and wherein the video signal decompression system decodes a coded data signal which includes the variable length coded data representing the set of video spatial frequency coefficients of the individual sub-block, the set of video spatial frequency coefficients having been reordered from the original order according to the selected scanning pattern, and the scanning mode signal indicating the selected scanning pattern.
1 more element
Dependencies are inferred from the claim text.