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:
Feb. 18, 2003
Filed:
Dec. 27, 1999
Alan J. McPherson, Chatsworth, CA (US);
Charles Mecca, Jessup, PA (US);
Warner Music Group, Inc., Olyphant, PA (US);
Abstract
A dual format optical disc ( ) on which a musical selection is recorded in two different formats, such as CD and DVD. For example, standard 2-channel rendition of the selection can be stored CD format and a 5.1 channel rendition of the same selection can be recorded using a DVD format. The disc can be used in standard CD player with a provided spacer ( ) arranged and constructed to allow the player's head ( ) to read the CD information. The disc can also be played with a DVD player in which case the spacer ( ) may be removed. Alternatively the disc can be formed with an integral disc, in which case, a DVD player includes an adjusting member to adjust reading head ( ) of the player to read either a standard DVD disc or the inventive disc.