Browse Prior Art Database

CYCLOPS A ONE BUTTON ALPHA-NUMERIC KEYPAD

IP.com Disclosure Number: IPCOM000006408D
Original Publication Date: 1992-May-01
Included in the Prior Art Database: 2002-Jan-01
Document File: 8 page(s) / 409K

Publishing Venue

Motorola

Related People

Brian Johnson: AUTHOR [+2]

Abstract

Personal communications devices such as pagers and personal communicators are getting smaller to meet the market need for portability and wearability. However, the range of features keeps increasing, and many of the more advanced devices in these categories are presently equipped with keypads for control and data entry. As the public's demand for delivery of personal ioforma- tion services increases, there will become a need for full ASCII character input to the device. This could be pro- vided by a "QWERTY" keypad, but its size will have to shrink smaller than a Bravo Pager. This presents a human engineering problem. Keypads need to be large enough to be digitally (tinger) activated. Stylus operation requires that the stylus be available, but a stylus is easily lost. The invention outlined here is one way to overcome the human engineering factors and yet use the minimum space for a finger pad and a display.

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MOTOROLA INC. Technical Developments Volume 15 May 1992

CYCLOPS A ONE BUTTON ALPHA-NUMERIC KEYPAD

by Brian Johnson and Gary Rapps

INTRODUCTION

  Personal communications devices such as pagers and personal communicators are getting smaller to meet the market need for portability and wearability. However, the range of features keeps increasing, and many of the more advanced devices in these categories are presently equipped with keypads for control and data entry. As the public's demand for delivery of personal ioforma- tion services increases, there will become a need for full ASCII character input to the device. This could be pro- vided by a "QWERTY" keypad, but its size will have to shrink smaller than a Bravo Pager. This presents a human engineering problem. Keypads need to be large enough to be digitally (tinger) activated. Stylus operation requires that the stylus be available, but a stylus is easily lost. The invention outlined here is one way to overcome the human engineering factors and yet use the minimum space for a finger pad and a display.

PRINCIPLE

  This concept is based on a single push button which can perform five separate switch functions, by a combiia- tion of rolling and pressing maneuvers. Such a button switch is shown in figure #l. A rolling movement of the button in one of four directions, about one of the two axes in the plane of the button, closes one of four switches A, B, C, or D. Straight downward pressure, somewhat greater than the rolling pressure ensures only intentional activation, and closes the ffih switch E exclusively. It is possible to fab- ricate this switch in a size just large enough for a tinger to roll and depress, some 0.4 inches on a side. The whole switch could have a thickness of perhaps 0.2 inches.

  A display of at least one alpha or numeric character is also required. In practice, the size of the display would depend on the cost and surface area of the personal device. In this explanation of operation it is assumed a multi line display is available, but this is not a require- ment. One such display is shown in figure #2. It consists of a message display area of one or more lines, and a character/function display area consisting of one or more

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characters. This specific one shows 9 characters, with the center one highlighted by having a darker cover over the other surrounding 8 characters.

  To select a character to enter into the message area the button is rolled up, down, left, or right, until the desired character is highlighted. If the desired character is not on the currently selected screen, the button is rolled until the " h " has been selcctcd. The button is then pressed vertically, executing the " A :' which functions as a Screen Select Character. Each successive button press, with the " h " selected, brings a different screen into the display. When the desired screen is displayed, the desired char- acter is selected, and entered into the message area by a vertic...