Communications: electrical – Systems – Nonselective paging
Patent
1988-01-11
1989-06-13
Orsino, Jr., Joseph A.
Communications: electrical
Systems
Nonselective paging
34082522, 34082544, 34082550, G08B 310
Patent
active
048396281
ABSTRACT:
A paging receiver includes a nonvolatile memory which is readable for controlling the operation of the paging device and is capable of being partitioned into a plurality of regions. A protect means is also included for allowing modification to a selected region of the nonvolatile memory in response to an unlock signal. In a first embodiment, the unlock signal is externally applied to the paging receiver. In a second embodiment, the unlock signal is generated when a predetermined coded signal stored in the paging receiver matches a received coded signal. In a third embodiment, the protect means further includes a switch means to permit the selected region of memory to be modified while preventing other regions of memory to be modified.
REFERENCES:
patent: 4211919 (1980-07-01), Ugon
Burch Kenneth R.
Davis Walter L.
Deems Vincent B.
Rivas Mario A.
Chau A. H.
Ingrassia Vincent B.
Macnak Philip P.
Motorola Inc.
Orsino Jr. Joseph A.
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