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专利名称：Encoding method and encoding apparatus,
and computer program and computerreadable stroage medium
发明人：Yoshinobu Umeda申请号：US10793848申请日：20040308
公开号：US200401733A1公开日：20040916
专利附图：
摘要：This invention re-encodes encoded data (e.g., PackBits encoded data), which isexpressed by a data format of a runlength code part indicating the runlength of the
same data and a data part indicating the data, and a runlength code part indicating therunlength of a different data stream and a data part indicating the different data stream,to the same data format without decoding that encoded data, thereby improving acompression ratio. To this end, upon reception of data encoded by a PackBits encodingprocess, a data division unit separates that data into information indicating the runlengthof data, and a data part, and outputs them as num and data. A data processing unit masksa predetermined bit in accordance with an instruction from a monitor unit, and outputsthat result to a data combining unit. The data combining unit and a data output unitreconstruct and output data in the PackBits format in accordance with the masked datapart and num data.
申请人：CANON KABUSHIKI KAISHA
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