Browse Prior Art Database

INTEGRATION OF TACTILE ANNUNCIATOR AND EXTERNAL MICROPHONE

IP.com Disclosure Number: IPCOM000007338D
Original Publication Date: 1995-Mar-01
Included in the Prior Art Database: 2002-Mar-15
Document File: 2 page(s) / 118K

Publishing Venue

Motorola

Related People

Ellis A. Pinder: AUTHOR [+2]

Abstract

In many situations, an audible alert from a port- able device is undesirable. In high noise environ- ments the audible alert may go unnoticed, and in low noise environments the alert may be disruptive. Additionally, audible alerts afford little privacy to the user, who may wish to be alerted without the knowledge ofothers.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 50% of the total text.

Page 1 of 2

0 M

MOlVROLA Technical Developments Volume 24 March 1995

"INTEGRATION OF TACTILE ANNUNCIATOR AND EXTERNAL MICROPHONE"

by Ellis A. Pinder and Micheal M. Austin

  In many situations, an audible alert from a port- able device is undesirable. In high noise environ- ments the audible alert may go unnoticed, and in low noise environments the alert may be disruptive. Additionally, audible alerts afford little privacy to the user, who may wish to be alerted without the knowledge ofothers.

  One possible solution to this problem is to silently alert the user by using a specially-designed external speaker and/or microphone with a tactile annuncia- tor. A tactile annunciator is a triggerable transducer which produces appreciable physical movement felt by the user. A common example ofa tactile annun- ciator used in many pagers and cellular phones is a small motor with an attached cam. Since the exter- nal speaker/microphone is in direct physical contact with the user's body, such an assembly produces an appreciable motion when activated. An example of such an arrangement is shown in Figure 1.

  Integrating the annunciator with an external speaker/microphone is a more desirable approach than placing the annunciator in the portable host device itself. In the latter case, users not wanting the feature would suffer size, weight, cost penalties. Integrating the external speaker/microphone with the annunciator makes a useful accessory that may be added by the user at any time.

  The annunciator should be placed in the speaker/microphone housing so as to maximize the tactile effect, and the specific tactile annunciator should produce sufficiently strong motion. Dedicated control lines may be used by the host device to acti- vate the annunciator, or existing connections may be "overloaded" to serve a dual purpose.

  Typically, the host device is likely to have some other slert capability such as an LED or buzzer. The host device may allow the user to select which annun- ciator method (or combination of methods) is to be used, and the host device may be designed to switch

30

by itself to an alternate annunciation method as a result of some internal or external condition, Dur- ing a low battery condition, for example, the host device may select the most energy effecient means to alert the user. If the device is a communication device, the calling party may be given the option of selecting the type of alert to be activated, tactile or audible. It is also desirab...