Message protection radio display paging using confidential code

Details Message protection radio display paging using confidential code Message protection radio display paging using confidential code

1996-06-12

1998-08-25

Zimmerman, Brian

Communications: electrical

Continuously variable indicating

With meter reading

34082552, 34082551, 3403111, 370312, 370314, 380 23, 455 384, H04Q 718

Patent

active

057987084

ABSTRACT:
In a radio display paging system, a transmitted paging signal either contains an optional confidential code and a message if the message is confidential or exclusively a non-confidential message. When the paging signal is received by a destination pager, the message contained in it is stored in a message memory. If the received signal contains a confidential code, a prompt is displayed for urging a user to enter a password, and the message in memory is scrambled. If the entered password is valid, the message in memory is descrambled and displayed.

REFERENCES:
patent: 5146217 (1992-09-01), Holmes et al.
patent: 5247519 (1993-09-01), Snowden et al.
patent: 5283832 (1994-02-01), Lockhart, Jr. et al.
patent: 5285496 (1994-02-01), Frank et al.
patent: 5483595 (1996-01-01), Owen
patent: 5550535 (1996-08-01), Park
patent: 5638450 (1997-06-01), Robson
Patent Abstracts of Japan, vol. 12, No. 435 (E-683), Nov. 16, 1988.

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