Patent ID: 7197134
Filing Date: 2007-03-27
Classification: H04M

Abstract:
1. A device for automatically generating a predefined sequence of dual tone multi-frequency (DTMF) tones, comprising: an electronic memory having stored therein DTMF tone samples corresponding to a predefined sequence; a speaker operable to play said samples; a processor separate from the electronic memory and being in communication with the electronic memory over a data bus, the processor having stored therein instructions executable by said processor for performing the following steps: a battery for providing electrical power to said speaker and said processor; a switch for controlling the flow of electrical power from said battery to said processor and said speaker, wherein the power is administered to energize the processor and the speaker to play DTMF tone samples; and a key chain fob for enveloping said battery, said switch, said memory, said speaker, and said processor, wherein said key chain fob is in direct contact with said switch such that said switch is changed from a non-conducting state to a conducting state when pressure is applied to the key chain fob.