Patent ID: 8659707

Claim:
A television receiver apparatus capable of operating with a battery, comprising: a receiver configured to receive first and second signals, the first signal specifying a state of a battery operation and the second signal specifying a state of a power-saving operation; a power supply controller configured to control power supply according to the first and the second signals; and a charger configured to charge the battery if the apparatus is in a standby state in a predetermined time period, wherein the power supply controller executes a first power control using a commercial power supply if the first signal specifies an off-state of the battery operation and the second signal specifies an off-state of the power-saving operation, a second power control using the commercial power supply if the first signal specifies an off-state of the battery operation and the second signal specifies an on-state of the power-saving operation, a third power control using the battery if the first signal specifies an on-state of the battery operation and the second signal specifies an off-state of the power-saving operation, and a fourth power control using the battery if the first signal specifies an on-state of the battery operation and the second signal specifies an on-state of the power-saving operation, the second power control consumes less power than the first power control, and the fourth power control consumes less power than the third power control.