Electronic device having an operating mode and an energy saving standby mode, and a method for switching between the two modes
First Claim
1. An electronic device, comprising:
- an antenna element for receiving a signal carrying information, the signal carrying the information including at least a first modulated frequency band for carrying basic information and a second modulated frequency band for carrying wake-up information;
a receiving unit for processing the basic information carried on the signal, said receiving unit having an operating mode and an energy saving standby mode;
a voltage supply unit for providing a supply voltage required for operation; and
a switching unit for switching between the operating mode and the standby mode, said switching unit being actuated by the wake-up information.
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Accused Products
Abstract
An electronic device has an operating mode and an energy saving standby mode. The electronic device includes an input-side antenna element for receiving a signal carrying information, a receiving unit for processing the basic information carried on the signal, a voltage supply unit for providing the supply voltage required for operation, and a switching unit for switching between the operating mode and the standby mode. First, to minimize the current being drawn in the standby mode, and second to ensure quick and reliable switching from the energy saving standby mode to the operating mode as required, it is proposed that the signal carrying the information includes a number of modulated frequency bands. At least one frequency band is intended for the basic information to be processed by the receiving unit. The other frequency band contains wake-up information for actuating the switching unit.
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Citations
15 Claims
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1. An electronic device, comprising:
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an antenna element for receiving a signal carrying information, the signal carrying the information including at least a first modulated frequency band for carrying basic information and a second modulated frequency band for carrying wake-up information;
a receiving unit for processing the basic information carried on the signal, said receiving unit having an operating mode and an energy saving standby mode;
a voltage supply unit for providing a supply voltage required for operation; and
a switching unit for switching between the operating mode and the standby mode, said switching unit being actuated by the wake-up information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15)
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14. A method for switching from an energy saving standby mode to an operating mode, which comprises:
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receiving a signal having a plurality of modulated frequency bands and carrying information;
filtering the signal to obtain a first frequency band for carrying basic information and a second frequency band for carrying wake-up information;
demodulating the second frequency band to obtain the wake-up information;
waking up from the standby mode to the operating mode when the second frequency band contains the wake-up information, and subsequently processing the basic information carried in the first frequency band; and
remaining in the standby mode for as long as no wake-up information is being carried by the second frequency band.
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Specification