Multiple application chip card with decoupled programs

Details Multiple application chip card with decoupled programs Multiple application chip card with decoupled programs

1996-09-25

1999-06-15

Hajec, Donald

Registers

Records

Conductive

235379, 235380, 235382, 902 26, G06K 1900

Patent

active

059124539

ABSTRACT:
The integration of multiple application programs on one chip card is described, whereby the application programs stored on it do not have access to each other, which is achieved through a separation and de-coupling of the individual programs from one another. A first embodiment has several mutually-independent units, consisting respectively of a processor unit and a memory unit. Communication of these independent units with the external world and also with each other takes place through a control unit. A communication of the independent units with each other can only take place through the respective processor units, so that the linked memory units may not be accessed by circumvention of the processor unit. In a further embodiment, the separation of different applications on a chip card with only one processor takes place through the insertion of a separation of the application segments in the memory area of the chip card. The separation has as a result that each application may only access one predetermined area within the memory, and that access outside of the specified memory area is disabled for this application.

REFERENCES:
patent: 4709137 (1987-11-01), Yoshida
patent: 4734568 (1988-03-01), Watanabe
patent: 4797542 (1989-01-01), Hara
patent: 4802218 (1989-01-01), Wright et al.
patent: 4831245 (1989-05-01), Ogasawara
patent: 4930129 (1990-05-01), Takahira
patent: 4985921 (1991-01-01), Schwartz
patent: 5049728 (1991-09-01), Rovin
patent: 5229652 (1993-07-01), Hough
patent: 5569897 (1996-10-01), Masuda
patent: 5578808 (1996-11-01), Taylor
patent: 5644781 (1997-07-01), Hagimori
patent: 5679945 (1997-10-01), Renner et al.
patent: 5682027 (1997-10-01), Bertina et al.
SourceBook of Automatic Identification and Data Collection by Russ Adams, pp.158-159, Jan. 1990.

Affiliated with

Also associated with

Rating

Multiple application chip card with decoupled programs does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multiple application chip card with decoupled programs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiple application chip card with decoupled programs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-404017