The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 19, 1999
Filed:
Jan. 07, 1998
Glen Alan Jaquette, Tucson, AZ (US);
Gordon Leon Washburn, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An input/output (I/O) data compression system operates two data compression modules in tandem. A 'master' module has an uncompressed data I/O, a data compressor/decompressor, a data flow manager, and a compressed data I/O. An identical 'dual' data compression module is also provided. Either module is capable of operating singly to provide compression/decompression between the data I/Os. A 'tandem' control causes the master data flow manager to control the compressed data I/O, and causes the dual data flow manager to relinquish control. A dual port 'active/slave' control responds to receipt of an input at one of the uncompressed data I/O's, idling the uncompressed data I/O of the module (slave) not receiving the input, and causing the module (active) receiving the input to conduct the input and output of uncompressed data. The input data compressed by the active state module may then be decompressed by the slave state module, and a data comparator, coupled to the decompressed data output, detects whether the data compression of the master is correct.