Terminal and Operating Method Thereof

• US 20090258620A1
• Filed: 12/24/2007
• Published: 10/15/2009
• Est. Priority Date: 12/29/2006
• Status: Abandoned Application

• Current Assignee: LG Innotek Company Limited (LG Corporation)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Jung, Jae Kil
• Application Number:
  US12/305,586
• Publication Number:
  US 20090258620A1
• Time in Patent Office: Days
• US Class Current: 455/200.100
• CPC Class Codes: H04N 21/2383 Channel coding or modulation of digital bit-stream, e.g. QPSK modulation arrangements for detecting or preventing errors in the information received by adapting the channel coding H04L1/0009; analogue front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• CPC Class Codes: H04N 21/4382 Demodulation or channel decoding, e.g. QPSK demodulation analog front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• CPC Class Codes: H04N 5/46 for receiving on more than one standard at will deflecting circuits of multi-standard receivers H04N3/27

Abstract

A terminal is provided. The terminal comprises a tuner converting a received high-frequency signal, a VSB (vestigial side band) demodulator demodulating the output signal of the tuner into a VSB signal, a DMB (digital multimedia broadcasting) demodulator demodulating the output signal of the tuner into a DMB signal, a decoder decoding the demodulated VSB signal or the demodulated DMB signal into an image signal, and a controller controlling at least one of the tuner, the VSB demodulator, the DMB demodulator, and the decoder.

Claims

1. A terminal comprising;

a tuner converting a received high-frequency signal;

a vestigial side band demodulator demodulating the output signal of the tuner into a vestigial side band signal;

a digital multimedia broadcasting demodulator demodulating the output signal of the tuner into a digital multimedia broadcasting signal;

a decoder decoding the demodulated vestigial side band signal or the demodulated digital multimedia broadcasting signal into an image signal; and

a controller controlling at least one of the tuner, the vestigial side band demodulator, the digital multimedia broadcasting demodulator, and the decoder.

2. The terminal according to claim 1, comprising a user interface receiving a command from a user.

3. The terminal according to claim 2, wherein the user interface displays information on a channel through which a broadcasting is being currently received.

4. The terminal according to claim 2, wherein the tuner selects a vestigial side band channel or a digital multimedia broadcasting channel according to a user command from the user interface.

5. The terminal according to claim 2, wherein the user interface comprises a touch panel.

6. The terminal according to claim 1, wherein the tuner converts a signal received through a vestigial side band channel or a digital multimedia broadcasting channel under the control of the controller.

7. The terminal according to claim 1, wherein the controller determines a reception error rate of a vestigial side band channel demodulated by the vestigial side band demodulator, and controls the tuner to select a digital multimedia broadcasting channel when the reception error rate is greater than a preset error rate.

8. The terminal according to claim 7, wherein the digital multimedia broadcasting channel selected by the tuner provides the same content as received through the vestigial side band channel.

9. The terminal according to claim 7, wherein the vestigial side band channel provides a higher quality image signal than the digital multimedia broadcasting channel.

10. A method for operating a terminal, the method comprising:

receiving a high-frequency signal received through a vestigial side band channel or a digital multimedia broadcasting channel using one tuner;

demodulating an output signal of the tuner into a vestigial side band signal or a digital multimedia broadcasting signal according to characteristic of the output signal; and

decoding the demodulated vestigial side band signal or the demodulated digital multimedia broadcasting signal into an image signal.

11. The method according to claim 10, comprising displaying, at a user interface, information on a channel through which a broadcasting is being received.

12. The method according to claim 11, comprising receiving a channel selected by a user through a touch panel, the touch panel being provided in the user interface.

13. The method according to claim 10, comprising, at the tuner, selectively receiving a vestigial side band channel or a digital multimedia broadcasting channel according to a user command inputted through a user interface.

14. The method according to claim 10, comprising:

determining a reception error rate of the demodulated vestigial side band channel; and

selecting and receiving a digital multimedia broadcasting channel when the reception error rate is greater than a preset error rate.

15. The method according to claim 14, wherein the selected digital multimedia broadcasting channel provides the same content as received through the vestigial side band channel.

16. The method according to claim 14, wherein the vestigial side band channel provides a higher quality image signal than the digital multimedia broadcasting channel.

17. A method for operating a terminal, the method comprising:

receiving a high-frequency signal through a vestigial side band channel using one tuner;

demodulating the output signal of the tuner into a vestigial side band signal; and

determining a reception error rate on the demodulated vestigial side band channel, and controlling the tuner to select and receive a digital multimedia broadcasting channel when the reception error rate is larger than a preset error rate.

18. The method according to claim 17, wherein the selected digital multimedia broadcasting channel provides the same content as received through the vestigial side band channel.

19. The method according to claim 17, wherein the vestigial side band channel provides a higher quality image signal than the digital multimedia broadcasting channel.