Browse Prior Art Database

AUTOMATIC PRIVATE MODE OPERATION

IP.com Disclosure Number: IPCOM000009455D
Original Publication Date: 1999-Sep-01
Included in the Prior Art Database: 2002-Aug-26
Document File: 2 page(s) / 123K

Publishing Venue

Motorola

Related People

Klaus Pai: AUTHOR [+2]

Abstract

This solution provides the advantage of a small sized portable radio, combined with the possibility to use the radio in both, the private and conventional mode. The required ergonomic distance between speaker and microphone is fulfilled by the down foldable keypad, which also enables a whisper mode. The space under the keypad might be used for additional keys (as shown in the drawing on next page) intended to use during conversation (e.g. con- trol of voice storage), as well as for a display or other applications.

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MOTOROLA Technical Developments

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AUTOMATIC PRIVATE MODE OPERATION

by Klaus Pai and Volker Martschink

INTRODUCTION portable like a handheld telephone. In order to opti- mize the handling of the radio a hinged keypad with This paper deals with the enhancement of a integrated microphone is used (see Figure 2). While portable radio with a lid; this will help to improve removing the keypad from the front of the radio, the the convenience of the user and enables smaller sound pressure level of the speaker is reduced and housings and/or more features by providing more the (maybe additional) microphone in the back of space for additional control elements. the keypad activated.

PROBLEMS TO BE SOLVED

  Our customers demand small portable radios with optimized ergonomics for versatile applica- tions. Actually small devices are not available to enable conventional and private operation with the same device. The requirement for small housings makes it difftcult to design radios for both the con- ventional mode operation and the private mode operation.

  The described solution will help to cure this problem.

  This solution provides the advantage of a small sized portable radio, combined with the possibility to use the radio in both, the private and conventional mode. The required ergonomic distance between speaker and microphone is fulfilled by the down foldable keypad, which also enables a whisper mode. The space under the keypad might be used for additional keys (as shown in the...