Tyrell Corporation

Jerry Fan

John Robert Berkheimer

Miles Martin Elmers, Ii

Jianchu Zheng

A renewable energy source is converted into a desired DC voltage that is delivered to a DC motor controller of a permanent magnet motor. A micro controller monitors the amount of supplied renewable DC having the desired DC voltage, which is delivered to each phase of the motor by turning on FET switches on demand. If the renewable DC available at a given instant is not adequate to power a particular phase of the motor, then the micro controller turns on backup FET switches that are part of an independent drive circuit that is in parallel with drive circuits of the renewable DC power circuit, to deliver to the motor line DC, which is produced from an AC supply that has gone through an AC to DC converter. Once charged, the renewable DC power will power the next available phase of the motor.

System and method for supplementing a generated DC power supply

The present invention is a method and apparatus that allows a menuof song titlesto be displayed on printed pagesrather than on small song cards, that are held by page framesthat are hingedly joined to a juke box unit. The printed pages can be changed by positioning a page frame under a hatch, which is an openingthat preferably includes a lidand slipping different pages in an out through a thin sloton the top of a page frame. The front of the juke box housinghas a hollowthat a user can fit their fingers into to manipulate flipping handlesthat are fixed to the page frames such that the user can turn and position the printed pages for either changing out the printed pages or for browsing the menu of song titles.

Method and apparatus for easily changing the menu of a juke box

The present invention is a folder indexing method that defines a format for storage and playback of digital audio files to support a specialized song selection access method. Access codes used to select media files for playback of music in a digital audio player, such as a juke box, are entered using track selection keys bearing the characters associated with the various access codes. At the software level, the track selection keys are assigned index values. Index values are used to locate a selected individual folder, but each individual folder uniquely stores only one media file. Preferably, folder names are only used for the purpose of alpha sorting folders so that index values can be used to count to a selected folder rather than searching for a term in a folder name. Multiple folder levels can be located using this method, but only the last folder level contains media files.

Folder indexing method for quickly accessing media files

The present invention integrates the power switch of a 'vintage' coin operated device, such as a juke box, into a highly visible replica coin return button. This otherwise useless coin return feature is replaced with a specially designed keycap that is part of a full travel pushbutton switch.

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Scottsdale, AZ, United States of America

John Robert Berkheimer