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Storage for Personalized Information

IP.com Disclosure Number: IPCOM000116616D
Original Publication Date: 1995-Oct-01
Included in the Prior Art Database: 2005-Mar-31
Document File: 2 page(s) / 37K

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Matsufusa, I: AUTHOR


Disclosed is a system that contains personalized information in its firmware storage.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Storage for Personalized Information

      Disclosed is a system that contains personalized information in
its firmware storage.

      The firmware is stored in flash memory which is programmable in
byte unit but erased whole chip.  Part of this flash memory is
reserved for the personalized information such as model number and
serial number.  This area remains blank at the initial firmware
programming.  Later, when the information is available, the
information is programmed without modifying the firmware area.

      Fig. 1 shows the example of this system.  CPU (1) follows the
instructions and data stored in both Flash Memory (2) and RAM (4).
CPU (1) controls operation of I/O (3) which communicate to the
external unit (5) which is detachable.  Fig. 2 shows the example of
contents of Flash Memory (2) in Fig. 1.  Program area (6) contains
the firmware or the instructions and data for CPU (1).  Personalized
Data area (7) is blank at initial, then programmed when instructed to
do so from external unit (4) through I/O (3).

      The personalized information is not limited to the model number
or serial number but any data which unique to unit, for example the
customer telephone number, the tuning parameter for the unit, the
network identification number, etc.