1. Team 3 Humphrey's Treasure Chest Patent Liability
Roy Scheck
Tony Leichty
Charles Lan
Steve Kingsley

2. MIDI-phone Functionality
Two Major Functions
Electronic Tuner
Finds the fundamental frequency of a signal using an altered Zero-Crossing algorithm
Matches the frequency with a “closest”
Determines how off pitch the note is from “closest” match
Analog to MIDI converter
Takes the closest match determined above and transforms it into a MIDI signal

3. Electronic Tuner Literal Infringement Doctrine of Equivalents
~250 patents that have “electronic tuner” in its title
Majority of patents researched were analog circuits
Doctrine of Equivalents
Existing patents would use digital logic to determine fundamental frequency through a zero-crossings algorithm

4. Analog to MIDI Literal Infringement Doctrine of Equivalents
Not many analog to MIDI converters
Many use FFT (multiple notes at once)
Doctrine of Equivalents
Existing patents would have to determine fundamental frequencies using a zero-crossings algorithm

5. Avoiding Infringement
Different algorithms
Can be programmed
Possible to change in later stages of design
Electronic Tuner
If considered for mass production, the “tuning” characteristics could be scrapped