| US 7,551,237 B2 | ||
| Television receiver having dual power circuits | ||
| Takehiko Numata, Hidaka (Japan); Shigero Kamise, Fukaya (Japan); and Akihiko Ishibashi, Fukaya (Japan) | ||
| Assigned to Kabushiki Kaisha Toshiba, Tokyo (Japan) | ||
| Filed on Sep. 27, 2005, as Appl. No. 11/235,094. | ||
| Claims priority of application No. 2004-288454 (JP), filed on Sep. 30, 2004. | ||
| Prior Publication US 2006/0066757 A1, Mar. 30, 2006 | ||
| Int. Cl. H04N 5/63 (2006.01); H04N 5/44 (2006.01) | ||
| U.S. Cl. 348—730 [348/725; 348/706; 348/632] | 15 Claims |
| 15. A television receiver comprising:
a receiving unit configured to receive a television broadcast and output a video signal and an audio signal;
a video display unit configured to display an image based on the video signal output from the receiving unit;
a mute unit configured to mute the audio signal output from the receiving unit;
a power supply including a first power circuit configured to supply operation power to the video display unit, and a second
power circuit configured to supply operation power to the receiving unit;
an operation unit configured to supply the power supply with a command for setting the power supply in an on state for supplying
operation power, and a command for setting the power supply in an off state for stopping supply of the operation power; and
a control unit configured to turn off the first power supply circuit to stop supply of the operation power to the video display
unit and to cause the mute unit to mute the audio signal when the operation unit supplies the command for setting the power
supply in the off state, the control unit being also configured to keep the second power supply circuit in an on state to
continue supply of the operation power to the receiving unit, for a time after the operation unit supplies the command for
setting the power supply in the off state, and to turn off the second power supply circuit to stop the supply of the operation
power to the receiving unit, after the time elapses.
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