Cover plate for a mobile device having a push-through dial keypad
View Patent ↗A mobile electronic device having a keyboard has a cover plate acting as a dial keypad. The keypad has a push-through, hinge-spring design that activates only one of two keyboard keys underlying a dial key and allows backlighting transmissivity. A translucent material can be used to allow the keyboard key backlighting to be coupled through to a top dial key. The keypad creates an aesthetically balanced dial keypad arrangement over a QWERTY keyboard. A preferable mechanical implementation allows backlighting and has an offset contact and spring design to activate one of the two underlying keys. This activation simplifies the software implementation for executing the dial number since the signal is coming from one address rather than having to make a determination of whether it is coming from one or two addresses. Moreover, the resulting dial key press has a standard single click feel.
1. A cover plate for use with a mobile device, the mobile device having a keyboard including a plurality of keyboard keys, the cover plate comprising:
a keypad frame mounted on said mobile device and user-movable between a first position away from said keyboard and keyboard keys and a second position overlying said keyboard and keyboard keys; and
a plurality of dial keys depressably mounted on the keypad frame;
wherein each of the plurality of dial keys includes a hinged portion so that each of the dial keys can actuate one of said keyboard keys when said cover plate is in said second position.
2. The cover plate of claim 1 wherein each of the plurality of dial keys includes an actuating end and wherein the hinged portion is a non-actuating hinged end.
3. The cover plate of claim 2 wherein the hinged portion is a spring hinge.
4. The cover plate of claim 1 wherein the hinged portion is located at an angled key cut.
5. The cover plate of claim 1 wherein the hinged portion is a spring hinge.
6. The cover plate of claim 1 wherein the cover plate is handedly attached to a housing of the mobile device.
7. The cover plate of claim 1 wherein the cover plate is rotatably attached to a housing of the mobile device.
8. The cover plate of claim 1 wherein the cover plate is attached to a housing of the mobile device so as to permit translational movement with respect to the mobile device.
9. The cover plate of claim 1 wherein the cover plate is removably attached to a housing of the mobile device.
10. The cover plate of claim 1 , in combination with said mobile device, said mobile device having means for sensing whether or not said keypad frame is in said second position overlying said keyboard and keyboard keys.