Keypad apparatus with integral display indicators

• US 6,011,961 A
• Filed: 06/20/1996
• Issued: 01/04/2000
• Est. Priority Date: 10/01/1990
• Status: Expired due to Fees

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Kaschke, Kevin D.
• Primary Examiner(s): Bost, Dwayne D.
• Assistant Examiner(s): MAUNG, NAY AUNG
• Application Number:
  US08/667,212
• Time in Patent Office: 1,293 Days
• Field of Search: 379/58, 379/59, 379/63, 379/164, 379/368, 379/369, 379/428, 379/429, 379/433, 379/451, 455/89, 455/90, 455/403, 455/550, 455/560, 455/575, 200/5 E, 200/341, 341/22, 341/28, 234/124, 345/168, 345/170, 364/189, 364/709.12, 434/228
• US Class Current: 455/575.1
• CPC Class Codes: H04M 1/0202 Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets constructional features of telephone transmitters or receivers, e.g. of speakers or microphones H04M1/03
• CPC Class Codes: H04M 1/22 Illumination; Arrangements for improving the visibility of characters on dials
• CPC Class Codes: H04M 1/23 Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof by improving visibility H04M1/22
• CPC Class Codes: H04M 1/724 User interfaces specially adapted for cordless or mobile telephones

Abstract

A keypad apparatus (100) with integral display indicator bars (102-104) provides input to a device while displaying the status of the device on the display indicator bars (102-104). The apparatus is comprised of a matrix of data input keys (101). The indicator bars (102-104) are coupled to the matrix of keys (101), the apparatus (100) being manufactured as a single unit. Both the data input keys (101) and the indicator bars (102-104) are comprised of substantially the same material; a flexible and translucent silicone material. This material enables the keypad apparatus, that is backlit by the device, to diffuse the light, thereby lighting the data keys. Each indicator bar (102-104) has an individual backlight (108) from the device, allowing a particular indicator bar to be lit individually.

Claims

1. In a radiotelephone having radiotelephone circuitry operative to receive manually-generated input signals generated by way of a plurality of keypad pushbuttons integrally molded with a keypad, the keypad further having a surface positioned in tandem with a surface of the circuit board, a combination with the radiotelephone circuitry and the keypad of an assembly for visually indicating selected signals generated by the radiotelephone circuitry, said combination comprising:

at least one light-generating device coupled to the radiotelephone circuitry and disposed upon the surface of the circuit board, wherein the at least one light-generating device is operative to emit light responsive to a signal generated by the radiotelephone circuitry;

a sheet of translucent material integrally molded with the keypad, extending beyond an edge surface thereof and positioned above the at least one light-generating device when the keypad is positioned upon the surface of the circuit board; and

at least one light-diffusing indicator integrally molded with the sheet of translucent material, the least one light-diffusing indicator extending beyond a top surface of the sheet of translucent material, wherein the least one light-diffusing indicator is positioned above corresponding ones of the least one light-generating device to diffuse light generated therefrom when the keypad is positioned upon the surface of the circuit board.

2. The combination of claim 1 wherein the keypad, the sheet of translucent material and the at least one light-diffusing indicator are comprised of a flexible, translucent, silicone material.

3. The combination of claim 1 further comprising:

a housing for housing the circuit board and for supporting the keypad and the sheet of translucent material in tandem with the surface of the circuit board.

4. The combination of claim 1:

wherein the keypad pushbuttons are flexibly coupled to the keypad by legs to permit each of the keypad pushbuttons to collapse against the surface of the circuit board upon actuation thereof; and

wherein the at least one light-diffusing indicator is fixably coupled to the sheet of translucent material to permit the at least one light-diffusing indicator to be relatively immovable relative to the yielding movement of the keypad pushbuttons upon actuation thereof.

5. A user interface apparatus for a radiotelephone having radiotelephone circuitry operative to receive manually-generated input signals, and light-generating devices disposed on a surface of the circuit board for indicating a status of output signals generated by the radiotelephone circuitry, the user interface apparatus comprising:

a keypad formed of a flexible material and having integrally molded therewith a plurality of keypad pushbuttons positioned at spaced locations to form an array of keypad pushbuttons, wherein individual ones of the plurality of keypad pushbuttons produce the manually-generated input signals upon actuation of the individual ones of the plurality of keypad pushbuttons;

a sheet of translucent material integrally molded with the keypad, extending beyond an edge surface thereof and positioned above the plurality of light-generating devices when the keypad is positioned upon the surface of the circuit board; and

a plurality of light-diffusing indicators integrally molded with the sheet of translucent material, each of the plurality of light-diffusing indicators extending beyond a top surface of the sheet of translucent material, wherein individual ones of the plurality of light-diffusing indicators are positioned above corresponding individual ones of the light-generating devices to diffuse light generated therefrom when the keypad is positioned upon the surface of the circuit board.

6. The user interface apparatus of claim 5:

wherein the keypad pushbuttons are flexibly coupled to the keypad by legs to permit each of the keypad pushbuttons to collapse against the surface of the circuit board upon actuation thereof; and

wherein the at least one light-diffusing indicator is fixably coupled to the sheet of translucent material to permit the at least one light-diffusing indicator to be relatively immovable relative to the yielding movement of the keypad pushbuttons upon actuation thereof.

7. A radiotelephone comprising:

a circuit board;

radiotelephone circuitry operative to receive manually-generated input signals and to generate output signals;

a keypad formed of a flexible material and having integrally molded therewith a plurality of keypad pushbuttons positioned at spaced locations to form an array of keypad pushbuttons, wherein individual ones of the plurality of keypad pushbuttons produce the manually-generated input signals upon actuation of the individual ones of the plurality of keypad pushbuttons;

a plurality of light-generating devices, disposed on the surface of the circuit board, for generating light to indicate a status of the output signals;

a sheet of translucent material integrally molded with the keypad, extending beyond an edge surface thereof and positioned above the plurality of light-generating devices when the keypad is positioned upon the surface of the circuit board; and

a plurality of light-diffusing indicators integrally molded with the sheet of translucent material, each of the plurality of light-diffusing indicators extending beyond a top surface of the sheet of translucent material, wherein individual ones of the plurality of light-diffusing indicators are positioned above corresponding ones of the light-generating devices to diffuse light generated therefrom when the keypad is positioned upon the surface of the circuit board.

8. The radiotelephone of claim 7:

wherein the keypad pushbuttons are flexibly coupled to the keypad by legs to permit each of the keypad pushbuttons to collapse against the surface of the circuit board upon actuation thereof; and

wherein the at least one light-diffusing indicator is fixably coupled to the sheet of translucent material to permit the at least one light-diffusing indicator to be relatively immovable relative to the yielding movement of the keypad pushbuttons upon actuation thereof.