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:
Feb. 17, 2004
Filed:
Mar. 05, 1999
Applicant:
Inventors:
Chris Zegelin, San Jose, CA (US);
Sarosh Vesuna, Los Altos, CA (US);
Assignee:
Symbol Technologies, Inc., Holtsville, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/130 ;
U.S. Cl.
CPC ...
G06F 1/130 ;
Abstract
An interface chip for a peripheral module connectable to and for use with a host computer is provided which utilizes an static Random access memory (SRAM) within the interface chip for both encryption of data packets and temporary storage of Card Information Structure (CIS) information. The CIS information is stored in the SRAM only during the power-up phase of operation, when encryption of data packets is not necessary and thus the memory is not being utilized for that purpose. This precludes the need for a separate SRAM IC, thus saving space on the card.