Data transmitting apparatus, data recording apparatus, data tran

Details Data transmitting apparatus, data recording apparatus, data tran Data transmitting apparatus, data recording apparatus, data tran

1997-08-04

1999-04-13

Lee, Thomas C.

Dynamic magnetic information storage or retrieval

Head

Core

360 8, G06F 3023

Patent

active

058945881

ABSTRACT:
A difference/compression ratio calculating means 76 in a data processing means 71 of a data transmitting apparatus according to the present invention calculates an actual difference and an actual compression ratio based on the data length of pre-compression data received from a data source 2 through pre-compression data receiving means 74 and the data length of compressed data outputted from a data compression circuit 67. If the actual difference is equal to or greater than a preset difference .alpha. and the actual compression ratio is equal to and greater than a preset compression ratio .beta., then the compressed data is transmitted to a data destination 3 through a transfer request data output means 79. Otherwise, the pre-compression data is transmitted to the data destination 3. With this arrangement, it is possible to prevent a phenomenon in which the size of compressed data which occupies a storage area in the data destination 3 is substantially the same as the size of uncompressed data which occupies the storage area, and also to avoid wasteful data expansion in the data destination 3.

REFERENCES:
patent: 4568983 (1986-02-01), Bobick
patent: 4758899 (1988-07-01), Tsukiyama
patent: 4937681 (1990-06-01), Fujinawa et al.
patent: 5194995 (1993-03-01), Severtson et al.
patent: 5210829 (1993-05-01), Bitner
patent: 5237460 (1993-08-01), Miller et al.
patent: 5278970 (1994-01-01), Pence
patent: 5357614 (1994-10-01), Pattisam et al.
patent: 5561824 (1996-10-01), Carreiro et al.

Affiliated with

Also associated with

Rating

Data transmitting apparatus, data recording apparatus, data tran does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Data transmitting apparatus, data recording apparatus, data tran, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data transmitting apparatus, data recording apparatus, data tran will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-228218