Patent ID: 9124883
Filing Date: 2015-09-01
Classification: H04N

Abstract:
1. An apparatus for viewing three-dimensional (3D) objects on a display, comprising: a pair of active shutter lenses, each lens enabled to alternate opacity and transparency; means for positioning the pair of active shutter lenses in front of a viewer's eyes; an input port configured to receive one or more audio signals over one or more audio channels, the one or more audio signals having an embedded shutter synchronization signal, the embedded shutter synchronization signal indicating a shutter transition rate based on a display transition rate of stereoscopic images on the display, wherein the embedded shutter synchronization signal is received using a modulated signal created from a signal modulation process, wherein the one or more audio signals are phase shifted to embed the synchronization signals, and wherein the shutter synchronization signal is encoded at a frequency beyond human audible range; a circuit operatively connected to the input port and the pair of active shutter lenses, the circuit configured to extract the shutter synchronization signal from the one or more audio signals and to synchronize alternating opacity and transparency of the lenses using the extracted shutter synchronization signal as extracted, wherein extracting the shutter synchronization signal includes demodulating the modulated signal; and an audio device configured to receive the one or more audio signals over the one or more audio channels and output the audio signals as received, wherein the audio device is operatively connected to at least one of the means for positioning the pair of lenses, the pair of active shutter lenses, the circuit, and the input port, and wherein the embedded synchronization signal is included in the audio signal in a way that does not disrupt an audio experience of a user.