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. 17, 2004
Filed:
Apr. 30, 1998
Bernard Van Steenbrugge, Eindhoven, NL;
Koninlijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A reproducing apparatus for reproducing an audio signal from a record carrier having a first digital audio signal (a PCM encoded audio signal) recorded on it in a first format and a second digital audio signal (an MPEG encoded multi channel audio signal) recorded on it in a second format. The apparatus includes a read unit for reading an information signal from the record carrier, a decoding unit for channel decoding the information signal read from the record carrier into a decoded information signal, a keyboard for receiving a selection signal and an output terminal for supplying an output signal which comprises either the first digital audio signal or the second digital audio signal in response to said selection signal. An output circuit is available to add an identification signal (bit b ) into the output signal, indicating that the output signal includes either the first digital audio signal or another audio signal. Further, a muting circuit mutes the first digital audio signal supplied by the output circuit in response to an occurrence of the selection signal for selecting the second audio signal. The muting circuit maintains the output circuit in a muted situation from the moment of occurrence of the selection signal until a certain time interval after the corresponding change in the identification signal.