[comp.sys.ibm.pc.hardware] Data Compression Hardware

solomon@chaos.utexas.edu (Thomas Solomon) (04/03/91)

Another question related to disk drives and storage:

I just found out that a package called STACKER can compress data
on the fly, while an application program is writing to the hard disk
on a PC.  STACKER can be obtained as a _hardware_ data compression
device, so, apparently, it can go quite fast.  Unfortunately, STACKER
is made to be compatible all the way down to the XT level, which means
that it uses only 8-bit data transfers.  Presumably, a 16-bit board
would be faster (i.e., have a higher throughput), and a 32-bit board
(i.e., EISA or MCA) would be faster still.

My question:  is anyone aware of other data compression add-in boards
that may be able to outrun STACKER.  Does anyone have experiences with
this type of data compression technique (i.e., on the fly).  Speed is 
of the utmost importance for us, as we hope to be able to use this
technique to store (compressed) video images in real-time.

Thanks.  I'll post a summary if there is interest.

			Tom Solomon
			solomon@chaos.utexas.edu

edm@hpfcmdd.hp.com (Ed Moore) (04/06/91)

Be sure to look at 3/12/91 PC Magazine, page 38.