US 8,554,133 B1Granted

Method and apparatus for wireless digital audio and video playback

AssigneeNeosonik Audio, Inc.

InventorsTheodore Philip Feldman, David Andrew Rice

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Abstract

The present invention discloses methods and systems for providing very high quality audio and video playback using all-digital wireless paths from the source to the speaker transducers, video displays and headphones located anywhere within a distance allowed by the FCC. Each speaker has a separate digital amplifier dedicated to each transducer within it (e.g. woofer, tweeter). The present invention also discloses a system that provides a data link capable of sending an all-digital, full-bandwidth, signal from the original digital source material to each separate transducer in the system without using sound degrading lossy data compression. This system is designed to read, broadcast, and reproduce with accurate audio loudspeaker time-alignment (<100 uS) and low overall latency (less than 7 milliseconds) all popular audio and video formats in full-bandwidth and without data compression in the effort to maintain the integrity of the entire audio and video signal.

Claims18

Dependent claims

A digital wireless audio and video playback apparatus, comprising:

a controller for receiving a digital or analog video input signal and a multichannel digital or analog audio signal comprising a plurality of audio input signals for plurality of audio channels and broadcasting a digital video signal and a plurality of digital audio signals for the plurality of audio channels to a plurality of receivers;
a video receiver configured to receive the digital video signal and play the digital video signal;
and
a plurality of wireless audio receivers wherein each audio receiver is configured to receive and play one of the channels of digital audio signals, wherein each audio receiver comprises:
a digital signal processor (DSP) configured to generate an audio signal from the received channel of digital audio signal, wherein the DSP is configured to apply digital crossover filtering to the audio signal and to correct a frequency response of the audio signals based upon frequency response correction information, prior to amplification by the amplifier;
an amplifier configured to receive the filtered audio signal from the DSP and generate an amplified analog audio signal;
and
a loudspeaker having at least one transducer coupled to the amplifier.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/646,875Filed 23 Dec 2009 · continuation
Priority: 9 Jan 2004
Granted: 8 Oct 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

H04H 20/61
Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers: for local area broadcast, e.g.…
H04H 40/27
Arrangements characterised by circuits or components specially adapted for receiving: specially adapted for broadcast systems covered by groups…
H04R 2420/07
Details of connection covered by H04R, not provided for in its groups: applications of wireless loudspeakers or wireless microphones
H04H
Broadcast communication

Family

Application60/535,457Us provisional application · filed 9 Jan 2004
Application60/535,251Us provisional application · filed 9 Jan 2004
Application11/030,694Parent of this continuation · filed 5 Jan 2005
US 7,653,344 B1Parent of this continuation
US 8,554,133 B1This patent

From the US filing history. Foreign family members aren’t listed.