Adaptive Lossless Data Compression (ALDC)
The ALDC (Adaptive Lossless Data Compression) algorithm is one variant of the LZ1 (Lempel-Ziv 1) class of data compression algorithms, first proposed by Abraham Lempel and Jacob Ziv in 1977. LZ1 algorithms achieve compression by building and maintaining a data structure called a history buffer. An LZ1 encode process and an LZ1 decode process both initialize this structure to the same known state and update it in an identical fashion. The encoder does this using the input data it receives for compression, while the decoder generates an identical data stream as its output, which it also uses for the update process. These two histories can remain identical and the history content information is not included with the compressed data stream. ALDC is a lossless algorithm, insuring that the decompressed data output is exactly the same as the uncompressed data input. QIC-154, ANSI and ECMA Development Standards describe this industry standard algorithm in detail.
ALDC compression dramatically improves data transmission speed in wireless communications
| Product |
Description |
|
AHA3520
| 20 MBytes/sec ALDC Data Compression Coprocessor IC |
