UNIQUE USER-SELECTABLE CADENCE FOR SILENT ALERT DEVICES
Original Publication Date: 1992-May-01
Included in the Prior Art Database: 2002-Jan-02
It has been determined that vibrational silent low the user to select particular on and off (tactile) alert devices are more effective if they are provide for a wide range turned on intermittently, or "pulsed? This has been proven repeatedly in subjective evaluations to determine silent alert device performance. An interesting result invention is to use the of the testing showed that most users had differing preferences for the cadence formats. For this reason, a user-selectable cadence format was required to maximize product appeal. "on" intervals and blank spaces ( - ) representing "ofp example, each interval could last l/l6 of a This invention makes possible the selection of more could set up to 16 intervals for a total than one tactile alert cadence format. The user selects pattern repeating each second for a the desired mode by following a simple keystroke pro- of, cycles. By turning intervals cedure. For example, the formats could include contin- &rt pulses and frequencies uous, slow pulsed or rapid pulsed alert operation, example of the screen might accomplished by a simple keystroke selection. It is also n n n n n n n n n n n n n n n n = lsed operation) n n n n n n n n = l/4 set "on", l/4 se' "off", IMsec "on", . . . .