US 7,308,188 B2Granted

Audio reproducing apparatus

AssigneeD&M Holdings, Inc.

InventorKazushi Namatame

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Abstract

Even when both a digital audio signal and an analog audio signal are inputted, a type of inputted digital audio signal is identified, and an internal signal path is automatically switched based on the result of the identification operation and previously set content. A main storage of a host microcomputer 12 stores signal path information indicating a signal path to be selected for each type of digital audio signal inputted from each external AV apparatus. A DIR 3 identifies the type of digital audio signal inputted from a digital input terminal 1. The host microcomputer 12 switches an A/D switching selector 4 and an analog direct/DSP process switching selector 7 respectively so that a signal path corresponding to the type of signal shown in the result of an identification operation of the DIR 3 is selected, based on the signal path information.

Claims2

Dependent claims

An audio reproducing apparatus having an analog input terminal to which an analog audio signal outputted from an AV apparatus is inputted, and a digital input terminal to which a digital audio broadcasting signal outputted from the AV apparatus is inputted, comprising:

an identification means for identifying a type of the digital audio broadcasting signal inputted into the digital input terminal, based on additional information of the digital audio signal, and
a signal path switching means for switching an internal signal path to an analog path so as to reproduce and output the analog audio signal inputted from the analog input terminal, when a result of an identification in the identification means shows that the digital audio broadcasting signal inputted from the digital input terminal is a PCM (Pulse Code Modulation) silence signal, and the PCM silence signal is inputted for more than a predetermined period of time and otherwise keeping the internal signal path so as to reproduce and output the digital audio broadcasting signal inputted from the digital input terminal.

Dependencies are inferred from the claim text.

Facts

Application: 10/259,602Filed 30 Sep 2002
Priority: JP 2002-0586515 Mar 2002
Published: US 2003/0170007 A111 Sep 2003
Granted: 11 Dec 2007
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

H04N 5/60
Receiver circuitry for the reception of television signals according to analogue transmission standards: for the sound signals
G11B 19/02
Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of…:…
G11B 20/10527
Digital recording or reproducing: audio or video recording; Data buffering arrangements
H04N 5/46
Receiver circuitry for the reception of television signals according to analogue transmission standards: for receiving on more than one standard…