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ALPHA NUMERIC ENTRY FOR PERSONAL ORGANIZER PAGERS USING A MEMBRANE SLIDER SWITCH

IP.com Disclosure Number: IPCOM000006877D
Original Publication Date: 1993-Jun-01
Included in the Prior Art Database: 2002-Feb-07
Document File: 3 page(s) / 103K

Publishing Venue

Motorola

Related People

Rob Sapashe, Jr.: AUTHOR [+2]

Abstract

Finger depression on the cursor pad shown in Fig- ure 1 couples the micro controller to the resistive strip which in torn is at a specific voltage level corresponding to the position that the voltage divider is contacted. A high voltage is present at the far let?, a low voltage is present at the far right, and a medium voltage is present in the middle. Characters A thru Z correspond with high to low voltages. When the A to D converter sees a medium voltage it translates this information to the con- troller which in tams outputs to the display a character in the mid range of the characters. (L, M, N, 0, or P) For example, if an "N" shows on the display when the cursor pad is depressed, then by sliding your finger slightly to either the left or right the display will change to an M or 0 corresponding to the order of the alpha- bet. Once the desired character is displayed the finger is removed from the cursor pad and the select switch is CHARACTERSCROLL depressed to save the character in the message being created.

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INC. Technical Developments Volume 19 June 1993

ALPHA NUMERIC ENTRY FOR PERSONAL ORGANIZER PAGERS USING A MEMBRANE SLIDER SWITCH

by Rob Sapashe, Jr. and Eric Eaton

  Finger depression on the cursor pad shown in Fig- ure 1 couples the micro controller to the resistive strip which in torn is at a specific voltage level corresponding to the position that the voltage divider is contacted. A high voltage is present at the far let?, a low voltage is present at the far right, and a medium voltage is present in the middle. Characters A thru Z correspond with high to low voltages. When the A to D converter sees a medium voltage it translates this information to the con- troller which in tams outputs to the display a character in the mid range of the characters. (L, M, N, 0, or P) For example, if an "N" shows on the display when the cursor pad is depressed, then by sliding your finger slightly to either the left or right the display will change to an M or 0 corresponding to the order of the alpha- bet. Once the desired character is displayed the finger is removed from the cursor pad and the select switch is

CHARACTERSCROLL

depressed to save the character in the message being created.

  An enhanced method (shown in Figure 2) is to depress and release the pad in the middle to select the mid range of the alphabet (for example an N shows) then by tapping either the far let? of the pad to move down the alphabet or tapping the far right to move up the alphabet the desired...