Data transmission apparatus and power supply control method for use in the same
First Claim
1. A data transmission apparatus comprising:
- a power supply unit;
a first receiving unit adapted to receive broadcast data, the first receiving unit being supplied a first power output by the power supply unit;
a second receiving unit adapted to receive broadcast data, the second receiving unit being supplied a second power output by the power supply unit;
a communication unit being supplied a third power output by the power supply unit, the communication unit supporting data transmissions with a plurality of terminals;
means for selectively assigning, in response to reception of a first request by the communication unit, one of the first receiving unit and the second receiving unit to one of the plurality of terminals having transmitted the first request, to enable the one of the first receiving unit and the second receiving unit to receive broadcast data that is designated by said one of the plurality of terminals having transmitted the first request; and
power supply control means for controlling the power supply unit based on states of use of the first receiving unit and the second receiving unit, to individually power on/off the first receiving unit and the second receiving unit while the communication unit is powered on.
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Accused Products
Abstract
According to one embodiment of the invention, a data transmission apparatus is adapted with a function for receiving broadcast data in response to a request from a terminal and for controlling a supply of power to different units of the data transmission apparatus. The data transmission apparatus comprises a power supply unit, a first receiving unit, a second receiving unit and a communication unit to support communications between an external network and a local network including a plurality of terminals. The data transmission apparatus further comprises a system control unit and optionally a power supply control unit for controlling the power supply unit based on states of use of the first receiving unit and the second receiving unit by individually powering on/off the first receiving unit and the second receiving unit while the communication unit is powered on.
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Citations
25 Claims
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1. A data transmission apparatus comprising:
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a power supply unit;
a first receiving unit adapted to receive broadcast data, the first receiving unit being supplied a first power output by the power supply unit;
a second receiving unit adapted to receive broadcast data, the second receiving unit being supplied a second power output by the power supply unit;
a communication unit being supplied a third power output by the power supply unit, the communication unit supporting data transmissions with a plurality of terminals;
means for selectively assigning, in response to reception of a first request by the communication unit, one of the first receiving unit and the second receiving unit to one of the plurality of terminals having transmitted the first request, to enable the one of the first receiving unit and the second receiving unit to receive broadcast data that is designated by said one of the plurality of terminals having transmitted the first request; and
power supply control means for controlling the power supply unit based on states of use of the first receiving unit and the second receiving unit, to individually power on/off the first receiving unit and the second receiving unit while the communication unit is powered on. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus comprising:
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a power supply unit adapted to provide a plurality of power outputs;
a first receiving unit adapted to receive broadcast data, the first receiving unit being supplied with a first power output of the plurality of power outputs;
a second receiving unit adapted to receive broadcast data, the first receiving unit being supplied with a second power output of the plurality of power outputs;
a communication unit to support communications between a first network and a second network including a plurality of terminals, the communication unit being supplied with a third power output of the plurality of power outputs; and
a system control unit to control the power supply unit, based on states of use of the first receiving unit and the second receiving unit, in supplying the third power output to the communication unit and to control a supply of the first power output to the first receiving unit independently of whether the second power output is supplied to the second receiving unit. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A method of controlling a power supply unit of a wireless audio-video station including a plurality of receiving units adapted to receive broadcast data, and a communication unit supporting communications between an external network and a local network including a plurality of terminals, the method comprising:
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supplying a third power output to drive the communication unit, while a first power output for driving the first receiving unit and a second power output for driving the second receiving unit are kept in a power-off state;
determining, in response to reception of a first request by the communication unit, whether one of the first receiving unit and the second receiving unit is in the power-off state;
assigning the first receiving unit in the power-off state to a first terminal of the plurality of terminals that transmitted the first request; and
supplying the first power output to the first receiving unit. - View Dependent Claims (13, 14, 15, 16)
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17. A method comprising:
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providing a plurality of audio-video (AV) paths including a first AV path and a second AV path; and
supplying power to each of the plurality of AV paths in response to (i) a request for broadcast data from a first terminal assigned to the first AV path and (ii) a request for broadcast data from a second terminal assigned to the second AV path. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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Specification