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VOICE AND DATA ENCRYPTION MODULE FOR ATTACHMENT TO PORTABLE CELLULAR TELEPHONE

IP.com Disclosure Number: IPCOM000009084D
Original Publication Date: 1999-Jun-01
Included in the Prior Art Database: 2002-Aug-07
Document File: 3 page(s) / 180K

Publishing Venue

Motorola

Related People

Matthew Petersen: AUTHOR

Abstract

This describes a mechanical apparatus, which provides a means of secure encrypted communica- tions through a standard MicroTAC Elite portable cellular telephone by interfacing through the acces- sory connector jack located on the bottom surface of the telephone case and/or the hands-free connector jack located on the top surface of the telephone case. The hands-free connector jack also provides audio connectivity when required. This mechanical appa- ratus also provides a means of transmitting secure encrypted data through a standard Motorola MicroTAC elite portable celhrlar telephone device.

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@ MOTOROLA

Technical Developments

VOICE AND DATA ENCRYPTION MODULE FOR ATTACHMENT TO PORTABLE CELLULAR TELEPHONE

by Matthew Petersen

  This describes a mechanical apparatus, which provides a means of secure encrypted communica- tions through a standard MicroTAC Elite portable cellular telephone by interfacing through the acces- sory connector jack located on the bottom surface of the telephone case and/or the hands-free connector jack located on the top surface of the telephone case. The hands-free connector jack also provides audio connectivity when required. This mechanical appa- ratus also provides a means of transmitting secure encrypted data through a standard Motorola MicroTAC elite portable celhrlar telephone device.

  This mechanical apparatus module has an inte- grated microphone within the case. This apparatus has an integral speaker earpiece that serves as a sec- ondary attachment feature. The primary attachment features are the mounting rails located on the front of the unit which interface with the battery mount- ing rails located on the rear surface of the telephone device. Once mounted on the battery rails of the telephone the speaker earpiece is rotated over the top of the telephone and snapped into place on the front surface of the telephone where the telephone speaker is located. An integral lug snaps into place in an indent located on the top rear surface of the telephone. A pin type connector is integral to the speaker earpiece when required and may be pmvid- ed to insert into the hands-free connector jack locat- ed on the top surface of the telephone case for proper audio connectivity.

  As the module is installed onto the telephone, two separate electrical interfaces are provided. First, power connection is provided on the module by a planar type connector that interfaces with the tele- phones spring type power connector contacts. Secondly, signal, audio and RF connectivity is pro- vided by a single connector plug that interfaces with the accessory connector jack located on the bottom surface of the telephone case. The battery is then installed on the rear of the module on mounting rails

of the same fashion provided by the telephone. Power connectivity is provided by spring type con- tacts on the module which interfaces with the planar type contacts located on the mounting surface of the battery. When completely installed the module pro- vides a fully physically integrated, compact portable secure communications system for the cellular tele- phone network. By entering a code on the keypad of the telephone the module is activated, begins a set- up routine and initiates encryption capabilities. A microphone housed internally within the module provides audio input. A speaker housed in the speaker earpiece provides audio output.

  When the secure transmission is to be terminat- ed, a second code is entered on the telephone key- pad which invokes a terminate routine. Whenever the module is installed on the telephone, the...