Controller capable of detecting user's fingerprint

1. A controller comprising:

a memory part storing a plurality of fingerprint information and a plurality of preference information, wherein each of the plurality of fingerprint information is associated with one of a plurality of preference information;

a sensor part including a fingerprint detection module for detecting a fingerprint;

a control part determining fingerprint information that is associated with the fingerprint detected by the fingerprint detection module among the plurality of fingerprint information, and selecting preference information associated with the determined fingerprint information; and

a communication part transmitting the selected preference information to a first external device wherein when the first external device or a second external device communicating with the first external device displays an image,

the communication part receives, from the first external device or the second external device, at least one of information on a date when the image is displayed, information on a time when the image is displayed, information on a period while the image is displayed, channel information corresponding to the image, and program information corresponding to the image.

2. The controller of claim 1 , wherein the first external device is a display device, wherein the second external device is a set-top box.

3. The controller of claim 1 , wherein the control part updates the selected preference information using the at least one information received by the communication part.

4. The controller of claim 1 , wherein the control part calculates preference channel information using the selected preference information,

wherein the communication part transmits the calculated preference channel information to at least one of the first external device and the second external device, and

controls at least one of the first external device and the second external device to display a preference channel list image corresponding to the calculated preference channel information.

5. The controller of claim 1 , wherein the control part calculates preference program information using the selected preference information,

wherein the communication part transmits the calculated preference program information to at least one of the first external device and the second external device, and

controls at least one of the first external device and the second external device to display a preference program list image corresponding to the calculated preference program information.

6. The controller of claim 1 , wherein when a fingerprint detected by the sensor part corresponds to any one of the plurality of fingerprint information stored in the memory part,

the communication part transmits a control signal to at least one of the first external device and the second external device to display an image asking whether the first external device or the second external device uses a user preference mode.

7. The controller of claim 1 , wherein when the fingerprint detected by the sensor part does not correspond to the plurality of fingerprint information stored in the memory part,

the communication part transmits a control signal to at least one of the first external device or the second external device to display an image asking whether the first external device or the second external device proceeds with user registration.

8. The controller of claim 1 , further comprising a power button for turning on or off power of at least one of the first external device and the second external device,

wherein the fingerprint detection module is mounted on the power button.

9. The controller of claim 8 , wherein when first detection information corresponding to a fingerprint that is detected when the power of the first external device or the second external device is turned on using the power button and second detection information corresponding to a fingerprint detected when the first external device or the second external device is turned off using the power button are the same, the at least one information received from the first external device or the second external device is stored in the memory part.

10. The controller of claim 9 , wherein when the first detection information and the second detection information are different,

the at least one piece of information received from the first external device or the second external device is not stored in the memory part.

11. The controller of claim 1 , further comprising a channel selection button for changing the image displayed by the first external device or the second external device,

wherein the fingerprint detection module is mounted on the channel selection button.

12. The controller of claim 1 , wherein the sensor part further comprises at least one of a voice recognition sensor and a motion recognition sensor.

13. A controller comprising:

a memory part storing a plurality of fingerprint information and a plurality of preference information, wherein each of the plurality of fingerprint information is associated with one of the plurality of preference information;

an input part including a power button capable of turning on or off power of at least one of a display device and a set-top box;

a sensor part including a fingerprint detection module with a plurality of sensors for detecting a fingerprint, wherein the plurality of sensors are mounted on the power button;

a control part determining fingerprint information corresponding to the fingerprint detected by the fingerprint detection module from among the plurality of fingerprint information, and selecting preference information corresponding to the determined fingerprint information among the plurality of preference information; and

a communication part transmitting the selected preference information to at least one of the display device and the set-top box

wherein when the display device displays an image,

the communication part receives, from the display device or the set-top box, at least one of information on a date when the image is displayed, information on a time when the image is displayed, information on a period while the image is displayed, channel information corresponding to the image, and program information corresponding to the image.

14. The controller of claim 13 , further comprising a clock part for determining at least one of the date information, the time information, and the period information.

15. The controller of claim 13 , wherein the control part updates the selected preference information using the at least one information received by the communication part.

16. The controller of claim 13 , wherein the control part calculates preference channel information using the selected preference information,

wherein the communication part transmits the calculated preference channel information to at least one of the display device and the set-top box, and

controls the display device to display a preference channel list image corresponding to the calculated preference channel information.

17. The controller of claim 13 , wherein the control part calculates preference program information using the selected preference information,

wherein the communication part transmits the calculated preference program information to at least one of the display device and the set-top box, and

controls the display device to display a preference program list image corresponding to the calculated preference program information.

18. The controller of claim 13 , wherein when the fingerprint detected by the sensor part does not correspond to the plurality of fingerprint information stored in the memory part,

the communication part transmits a control signal to at least one of the display device and the set-top box to display an image requesting fingerprint registration.