Programmable cellular telephone and system

Telecommunications – Radiotelephone system – Security or fraud prevention

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

455418, H04M 1100

Patent

active

058289569

ABSTRACT:
A module (P-code module) provides parameter information to a Number Assignment Module (NAM) in a cellular phone unit by processing a simple programming code (P-code) entered by the user through a telephone keypad. The P-code employs a flexible length telephone keypad coding that can be translated into programmable parameters of cellular phone products. Field identification numbers and look-up tables are used to shorten the P-code length for more frequently used information. To activate a cellular phone, the user provides product and serial number information to a dial-up access center which then generates a scrambled P-code for entry by the user. The P-code module within the processor unit of the cellular phone likewise descrambles, decompresses, and performs an integrity check on the sequence of digits being entered by the user. This P-code module reduces the technical requirements for programming a cellular phone purchased at the retail level such that a user can perform the necessary programming for activating the cellular telephone on a local telephone network. A security arrangement randomly generates two passwords when the cellular telephone is activated to prevent unauthorized reprogramming of the phones for use on other cellular telephone networks.

REFERENCES:
patent: 4864599 (1989-09-01), Saegusa et al.
patent: 4958368 (1990-09-01), Parker
patent: 4992783 (1991-02-01), Zdunek et al.
patent: 5046082 (1991-09-01), Zicker et al.
patent: 5091942 (1992-02-01), Dent
patent: 5237612 (1993-08-01), Raith
patent: 5241598 (1993-08-01), Raith
patent: 5257412 (1993-10-01), Tomioka et al.
patent: 5297191 (1994-03-01), Gerszberg
patent: 5297192 (1994-03-01), Gerszberg
patent: 5301223 (1994-04-01), Amadon et al.
patent: 5315638 (1994-05-01), Mukari
patent: 5386455 (1995-01-01), Cooper
patent: 5386468 (1995-01-01), Akiyama et al.
patent: 5414753 (1995-05-01), Ehara
patent: 5457737 (1995-10-01), Wen
patent: 5485505 (1996-01-01), Norman et al.
patent: 5513245 (1996-04-01), Mizikovsky et al.
patent: 5553311 (1996-09-01), McLaughlin et al.
patent: 5553314 (1996-09-01), Grube et al.
patent: 5572193 (1996-11-01), Flanders et al.
CM-H333, Sony, "Portable Cellular Telephone with Accessories, Operating Instructions".
CM-H333, Sony, "Portable Cellular Telephone, Instruction for Programming NAM Data".

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Programmable cellular telephone and system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Programmable cellular telephone and system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Programmable cellular telephone and system will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1622520

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.