Patent ID: 8760326

Claim:
A method for providing data transmission from a programming device to a control unit, in which the data to be transmitted are compressed by a Huffman coding in the programming device, and, after the compression, are transmitted together with a Huffman coding tree for decoding from the programming device to the control unit, are decompressed in the control unit and are stored there, the method comprising: performing, for a predetermined number of data words consisting in each case of N-bits of the data to be transmitted, a first Huffman coding with a first coding tree; performing, for the remaining data words consisting in each case of M-bits, a second Huffman coding with a second coding tree, N being greater than M, wherein the predetermined number of data words consist of N-bits and the remaining data words consist of M-bits consisting of in each case more than two data words; generating a coding tree for the N-bit data words to be coded, and generating a coding tree for the M-bit data words to be coded; transmitting both of the coding trees to the control unit; and providing all coded N-bit data words and N/M of successive M-bit data words in each case with a preceding code bit.