Message protection radio display paging using confidential code and password
First Claim
Patent Images
1. A method for exclusively displaying a confidential message to an authorized user as an optional feature of a selective calling radio display pager, comprising the steps of:
- a) transmitting a paging signal which contains an optional confidential code and a message if the message is confidential and contains exclusively a message if the message is not confidential;
b) receiving the paging signal if the paging signal is addressed to the pager and storing the message contained in the received paging signal in a message memory;
c) determining whether or not the received paging signal contains the optional confidential code;
d) if the received paging signal contains the optional confidential code, scrambling the message in the message memory and displaying a prompt for urging a user to enter a password, and if the entered password is valid, descrambling the scrambled message and displaying the descrambled message; and
e) if the received paging signal does not contain the optional confidential code, displaying the message in said message memory.
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Accused Products
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.
26 Citations
6 Claims
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1. A method for exclusively displaying a confidential message to an authorized user as an optional feature of a selective calling radio display pager, comprising the steps of:
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a) transmitting a paging signal which contains an optional confidential code and a message if the message is confidential and contains exclusively a message if the message is not confidential; b) receiving the paging signal if the paging signal is addressed to the pager and storing the message contained in the received paging signal in a message memory; c) determining whether or not the received paging signal contains the optional confidential code; d) if the received paging signal contains the optional confidential code, scrambling the message in the message memory and displaying a prompt for urging a user to enter a password, and if the entered password is valid, descrambling the scrambled message and displaying the descrambled message; and e) if the received paging signal does not contain the optional confidential code, displaying the message in said message memory. - View Dependent Claims (2)
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3. A selective calling radio display pager for receiving a paging signal having a message field containing data which is an optional confidential code plus a message if the message is confidential and which is exclusively a message if the message is not confidential, comprising:
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display means; a message memory; password input means; control means for storing the data contained in the message field of the received paging signal into said message memory if the paging signal is addressed to the pager, displaying a prompt on the display means for urging a user to enter a password via the password input means if the optional confidential code is contained in the data in the message memory, and displaying the message in the message memory on the display means if one of the entered password is valid and the optional confidential code is not contained in the received paging signal; and a scrambler/descrambler; wherein the control means causes the scrambler/descrambler to scramble the message in the message memory if the optional confidential code is contained in the data in the message memory, and causes the scrambler/descrambler to descramble the scrambled message and display the descrambled message on the display means if the entered password is valid. - View Dependent Claims (4, 5, 6)
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Specification