<http://webisa.webdatacommons.org/prov/67177869>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/176868602> .
<http://webisa.webdatacommons.org/176868602>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/176868602>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/176868602>	<http://www.w3.org/ns/prov#value>	"In one embodiment, the modulation frequency of the projector can encode information, such as bit patterns to transmit a message that can be detected and extracted by the camera and the signal processing unit." .