Transfer of power and data
First Claim
1. A method for transmission of power and data during a plurality of consecutive time intervals, the method comprising:
- during a power-transmission portion of each of the plurality of consecutive time intervals, transmitting a power signal in which no data is encoded;
during a power-and-data-transmission portion of each of the plurality of consecutive time intervals, transmitting a power-and-data signal in which is encoded a single bit, the power-and-data signal including;
(a) a high-level power-and-data signal portion, and (b) a low-level power-and-data signal portion, the high-level power-and-data signal portion being higher than the low-level power-and-data signal portion; and
configuring a transmission duty cycle in each of the plurality of consecutive time intervals to be n/(n+1), n being an integer greater than one.
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Accused Products
Abstract
Apparatus and methods are described, including a method for transmission of power and data during a plurality of consecutive time intervals. During a power-transmission portion of each of the plurality of consecutive time intervals, a power signal, in which no data is encoded, is transmitted. During a power-and-data-transmission portion of each of the plurality of consecutive time intervals, a power-and-data signal, in which is encoded a single bit, is transmitted. The power-and-data signal includes: (a) a high-level power-and-data signal portion, and (b) a low-level power-and-data signal portion. Other applications are also described.
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Citations
16 Claims
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1. A method for transmission of power and data during a plurality of consecutive time intervals, the method comprising:
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during a power-transmission portion of each of the plurality of consecutive time intervals, transmitting a power signal in which no data is encoded; during a power-and-data-transmission portion of each of the plurality of consecutive time intervals, transmitting a power-and-data signal in which is encoded a single bit, the power-and-data signal including;
(a) a high-level power-and-data signal portion, and (b) a low-level power-and-data signal portion, the high-level power-and-data signal portion being higher than the low-level power-and-data signal portion; andconfiguring a transmission duty cycle in each of the plurality of consecutive time intervals to be n/(n+1), n being an integer greater than one. - View Dependent Claims (2, 3)
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4. A method for receiving power and data during a plurality of consecutive time intervals, the method comprising:
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during a power-receiving portion of each of the plurality of consecutive time intervals, receiving a power signal in which no data is encoded; during a power-and-data-receiving portion of each of the plurality of consecutive time intervals, receiving a power-and-data signal in which is encoded a single bit, the power-and-data signal including;
(a) a high-level power-and-data signal portion, and (b) a low-level power-and-data signal portion, the high-level power-and-data signal portion being higher than the low-level power-and-data signal portion; andwherein receiving the power-and-data signal comprises receiving the power-and-data signal by a receiver, and wherein the method further comprises synchronizing the receiver to a transmitter of the power-and-data signal by; detecting a transition during each of the time intervals, the transition selected from the group consisting of;
(i) a transition between the high-level power-and-data signal portion and the low-level power-and-data signal portion, and (ii) a transition between the low-level power-and-data signal portion and the high-level power-and-data signal portion, andverifying that a sequence of the transitions corresponds to a synchronization sequence.
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5. Apparatus for transmission of power and data during a plurality of consecutive time intervals, the apparatus comprising a transmitter comprising:
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a processing unit, configured to output a sequence of bits; a modulating unit, configured to convert the sequence to an analog signal; and a light source, configured to transmit a light signal in response to the analog signal, the light signal including; during a power-transmission portion of each of the plurality of consecutive time intervals, a power signal in which no data is encoded, and during a power-and-data-transmission portion of each of the plurality of consecutive time intervals, a power-and-data signal in which is encoded a single bit, the power-and-data signal including;
(a) a high-level power-and-data signal portion, and (b) a low-level power-and-data signal portion, the high-level power-and-data signal portion being higher than the low-level power-and-data signal portion; andwherein the modulating unit is configured to make a transmission duty cycle, in each of the plurality of consecutive time intervals, have a value n/(n+1), n being an integer greater than one. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification