Re: LZ: Compression program (and quest
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At 05:00 PM 9/11/96 -0400, you wrote:
>
>
>----------
>> From: SAM STAUFFER <sam.stauffer@aquila.com>
>> To: list-zshell@lists.ticalc.org
>> Subject: Re: LZ: Compression program (and quest
>> Date: Wednesday, September 11, 1996 4:49 PM
>>
>> -> >This method is known as the Lempel-Ziv algorithm.
>> ->
>> -> That is interesting, thanks. But how efficient is that with data
>> -> files that are more random?
>>
>> It's patended.
>
>I don't think it is patented anymore. It was invented in 1977 which was 19
>years ago. The patent therfore expired a couple years ago. It is now
>public domain. However, I am rethinking and I thought that for ZCompress
>or whatever the name will be, a arithmetic compression algorithm would work
>best. Although slow, it provides for excellent compression, which is the
>main reason for the compressor.
>
Remember, the compressor will be on the computer. Therefore I doubt it will
be too slow. Then again, the decompressor will be slow too. I don't know
about the rest of you, but I would take a slow and high compression over a
fast and low compression any day.
-- Scott Rein
srein@rain.org
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