Method for sending bit mapped image by appending special code to

Details Method for sending bit mapped image by appending special code to Method for sending bit mapped image by appending special code to

1992-04-21

1997-06-17

Lee, Thomas C.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

3582611, 341 67, 382245, 395114, G06F 1500

Patent

active

056406070

ABSTRACT:
A method of transferring the digital representation of a bit-mapped image which includes the steps of: (1) identifying predefined patterns in the bit-mapped image data, and (2) transmitting pattern codes corresponding to those patterns to a receiving device. The identification of the patterns involves the partitioning of the bit-mapped image into a series of pattern cells and the scanning of those pattern cells to find preselected patterns. The preferred method of searching the pattern cells is based upon the use of a hashing function and hash tables. In response to the received pattern codes, the receiving device reconstructs the bit-mapped image associated with the pattern codes. After all patterns in the bit-mapped images are identified and sent to the receiving device, the non-recognized portions of the bit-mapped image are then sent. The overall bit-mapped image is recreated by combining the recognized patterns with the non-recognized portions in their original order.

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