Logging individuals for TV measurement compliance

1. A computer-implemented method for determining the TV viewing activities of an individual using a master device adjacent a TV and a tag carried by the individual, the method comprising:

at the master device having memory and one or more processors:

detecting a plurality of audio signals from the TV;

in response to detecting the plurality of audio signals, generating a plurality of TV broadcast records, each TV broadcast record including an audio fingerprint derived from the plurality of audio signals;

detecting a plurality of heartbeat signals from the tag;

in response to detecting the plurality of heartbeat signals, generating a TV audience record for the individual, the TV audience record including a plurality of audience status update entries, wherein the plurality of audience status update entries keep track of the individual's locations relative to the master device;

sending the plurality of TV broadcast records and the TV audience record to a remote server, wherein the remote server is configured to correlate the plurality of TV broadcast records with the TV audience record to determine one or more TV programs watched by the individual;

generating an alert message indicating that the individual has not watched the TV if a time gap between two consecutive heartbeat signals is more than a predefined threshold;

inserting a new audience status update entry into the TV audience record indicating that the individual has been outside a predefined TV watching zone; and

notifying the individual of the alert message.

2. The computer-implemented method of claim 1 , further comprising:

detecting multiple consecutive audio signals from the TV;

converting each of the multiple consecutive audio signals into a respective audio fingerprint;

aggregating the respective audio fingerprints into one aggregated audio fingerprint; and

associating the aggregated audio fingerprint with the multiple consecutive audio signals, wherein the aggregated audio fingerprint is to be sent to the remote server to determine a TV program corresponding to the multiple consecutive audio signals.

3. The computer-implemented method of claim 1 , wherein the master device is configured to communicate with multiple tags, each tag being assigned to a unique individual and having a unique tag identifier included in the heartbeat signals transmitted from the tag, and insert the tag identifiers into TV audience records associated with respective individuals.

4. The computer-implemented method of claim 1 , wherein the TV audience record is generated by the master device in response to a login request from the individual.

5. The computer-implemented method of claim 4 , wherein the individual generates the login request by pressing a button on the tag.

6. The computer-implemented method of claim 4 , wherein the individual generates the login request by pressing a button on the master device.

7. The computer-implemented method of claim 1 , wherein the TV audience record includes a last heartbeat timestamp that is updated whenever the master device receives a new heartbeat signal from the tag.

8. The computer-implemented method of claim 1 , wherein each audience status update entry includes an update timestamp indicating when the individual starts watching the TV or stops watching the TV by moving into or out of a predefined TV watching zone.

9. The computer-implemented method of claim 8 , wherein the predefined TV watching zone is a region within a predefined distance from the master device.

10. The computer-implemented method of claim 1 , wherein the master device is configured to detect audio signals from the TV at a predefined constant time interval.

11. The computer-implemented method of claim 1 , wherein the tag is configured to transmit a heartbeat signal in response to a query signal from the master device.

12. The computer-implemented method of claim 1 , wherein the tag is one selected from the group consisting of a Bluetooth-enabled tag, a RFID tag, a tag that generates ultra-sound signals, and a tag that generates Wi-Fi signals.

13. The computer-implemented method of claim 1 , wherein the master device is a mobile phone that is configured to send the plurality of TV audience records and the plurality of TV broadcast records to the remote server via a wireless communication network.

14. The computer-implemented method of claim 1 , wherein the master device is configured to notify the individual by causing the tag to produce a beep or vibrate.

15. The computer-implemented method of claim 1 , wherein the master device is configured to notify the individual by generating a blinking signal through its display.

16. A computer-implemented method for determining the TV viewing activities of an individual using a master device adjacent a TV and a tag carried by the individual, the method comprising:

at the master device having memory and one or more processors:

detecting a plurality of audio signals from the TV;

in response to detecting the plurality of audio signals, generating a plurality of TV broadcast records, each TV broadcast record including an audio fingerprint derived from the plurality of audio signals;

detecting a plurality of heartbeat signals from the tag;

in response to detecting the plurality of heartbeat signals, generating a TV audience record for the individual, the TV audience record including a plurality of audience status update entries, wherein the plurality of audience status update entries keep track of the individual's locations relative to the master device;

sending the plurality of TV broadcast records and the TV audience record to a remote server, wherein the remote server is configured to correlate the plurality of TV broadcast records with the TV audience record to determine one or more TV programs watched by the individual;

generating an alert message indicating that the individual has been watching the TV without logging into the master device if a time gap between a first and a last of the plurality of heartbeat signals is more than a predefined threshold;

inserting a new audience status update entry into the TV audience record indicating that the individual has been within a predefined TV watching zone; and

notifying the individual of the alert message.

17. A TV audience survey system, comprising:

a tag, wherein the tag is carried by an individual; and

a master device including memory and one or more processors, wherein the master device is located adjacent a TV, wherein the memory of the master device stores one or more programs to be executed by the one or more processors of the master device, the one or more programs comprising instructions for:

detecting a plurality of audio signals from the TV;

in response to detecting the plurality of audio signals, generating a plurality of TV broadcast records, each TV broadcast record including an audio fingerprint derived from the plurality of audio signals;

detecting a plurality of heartbeat signals from the tag;

in response to detecting the plurality of heartbeat signals, generating a TV audience record for the individual, the TV audience record including a plurality of audience

status update entries, wherein the plurality of audience status update entries keep track of the individual's locations relative to the master device;

sending the plurality of TV broadcast records and the TV audience record to a remote server, wherein the remote server is configured to correlate the plurality of TV broadcast records with the TV audience record to determine one or more TV programs watched by the individual;

generating an alert message indicating that the individual has not watched the TV if a time gap between two consecutive heartbeat signals is more than a predefined threshold;

inserting a new audience status update entry into the TV audience record indicating that the individual has been outside a predefined TV watching zone; and

notifying the individual of the alert message.