Set-top-box with integrated encoder/decoder for audience measurement
View Patent ↗Systems and methods are disclosed for encoding audio in a set-top box that is invoked by a user when listening to a broadcast audio signal from a radio, TV, streaming or other audio device. A detection and identification system comprising an audio encoder is integrated in a set-top box, where detection and identification of media is realized. The encoding automatically identifies characteristics of the media (e.g., the source of a particular piece of material) by embedding an inaudible code within the content. This code contains information about the content that can be decoded by a machine, but is not detectable by human hearing. The embedded code may be used to provide programming information to the view or audience measurement date to the provider.
1. A method for encoding media in a set-top-box configured to receive media at a set-top box input and process the received media for reproduction, comprising the steps of:
storing a message in the set-top-box;
processing the received media in a frontend of the set-top box to demodulate the received media and produce an audio component; and
encoding the audio component in the set-top-box with the stored message comprising one or more symbols, each of said symbols comprising a plurality of substantially single-frequency code components, and wherein the message is masked within the audio component, said encoding being performed prior to the reproduction of the received media via the set-top box.
2. The method of claim 1 , wherein the audio component comprises one of pulse code modulated (PCM) digital code or decompressed audio.
3. The method of claim 1 , wherein the step of processing the received media comprises the steps of separating the audio component into frequency components.
4. The method of claim 3 , further comprising evaluating the frequency components to determine masking ability, and masking the message in the audio component based on the evaluation.
5. The method of claim 1 , wherein the media comprises a video component.
6. The method of claim 1 , further comprising the step of capturing the encoded audio in the set-top-box.
7. The method of claim 6 , wherein the encoded audio is captured via a transducer.
8. The method of claim 6 , wherein the captured encoded audio is decoded to determine a characteristic of the media.
9. A system for encoding media, comprising:
a set-top-box comprising an input coupled to a frontend, where the input is configured to receive media and the frontend is configured to demodulate the received media;
a processor, operatively coupled to the input, for processing the demodulated received media for reproduction via the set-top-box and to produce an audio component;
a storage, operatively coupled to the processor, for storing a message in the set-top box; and
an encoder, operatively coupled to the processor, for coding the audio component with the stored message comprising one or more symbols, each of said symbols comprising a plurality of substantially single-frequency code components, and wherein the message is masked within the audio component, said encoding being performed in the set-top-box prior to the reproduction of the received media.
10. The system of claim 9 , wherein the audio component comprises one of pulse code modulated (PCM) digital code or decompressed audio.
11. The system of claim 9 , wherein the processor separates the audio component into frequency components.
12. The system of claim 11 , wherein the encoder evaluates the frequency components to determine masking ability, and masking the message in the audio component based on the evaluation.
13. The system of claim 9 , wherein the media comprises a video component.
14. The system of claim 9 , further comprising a transducer for capturing the encoded audio in the set-top-box.
15. The system of claim 14 , further comprising a decoder that decodes the captured encoded audio to determine a characteristic of the media.
16. The system of claim 15 , wherein the decoder and transducer are housed within the set-top box.
17. The system of claim 15 , wherein the decoder and transducer are housed in a portable device having a data interface for communicating research data generated from the decoded audio.
18. The system of claim 17 , wherein the data interface is a universal serial bus (USB) interface.
19. A method for encoding media in a set-top-box configured to receive media at a set-top box input, comprising the steps of:
storing a message in the set-top-box, wherein the message comprises one or more symbols, each of said symbols comprising a plurality of substantially single-frequency code components, and wherein the message comprises information regarding at least one of (i) channel information, (ii) program information, (iii) demographic information and (iv) set-top box system information;
processing the received media in a frontend of the set-top box to demodulate the received media and to produce an audio component; and
encoding the audio component with the message prior to reproduction of the received media via the set-top-box, wherein the encoded message is masked within the audio component.
20. The method of claim 19 , further comprising the step of decoding the encoded message in the set-top-box.