The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 27, 1995
Filed:
Jun. 01, 1994
Mark E Wanger, Fort Collins, CO (US);
Mark J Bianchi, Fort Collins, CO (US);
Kraig A Proehl, Loveland, CO (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
Disclosed is an optical disk handling system, called an autochanger, having two control systems to provide the six motions necessary to move optical disk cartridges from storage holding cells to an optical drive. The system uses shaft encoders on two motors of the two control systems, and current or voltage feedback from the motors, for all positioning, and for detecting the location of the mechanisms during, and at the end of, moves. An optical drive interface connects the electronics of the autochanger and the optical drive, and includes electrical signals to emulate an eject pushbutton on the optical drive and an indicator lamp on the optical drive. The autochanger monitors the on and off state of the lamp signal as well as the duration of the on and off cycles to determine which operation is being performed by the optical drive. The autochanger uses the lamp signal and the eject signal to control all operations with the optical drive.