Dual path acoustic data coupling system and method
First Claim
1. A data coupler, comprising:
- a first acoustic isolation transformer operable to develop a first isolated output signal in response to a first modulated input signal;
a second acoustic isolation transformer operable to develop a second isolated output signal in response to a second modulated input signal;
a first transmitter coupled to the first acoustic isolation transformer and adapted to receive a first data input signal, the first transmitter operable to generate the first modulated input signal in response to the first data input signal;
a second transmitter coupled to the second acoustic isolation transformer and adapted to receive a second data input signal that is the complement of the first data input signal, the second transmitter operable to generate the second modulated input signal in response to the second data input signal;
a first receiver coupled to the first acoustic isolation transformer to receive the first isolated output signal and operable to generate a first demodulated signal responsive to the first isolated output signal; and
a second receiver coupled to the second acoustic isolation transformer to receive the second isolated output signal and operable to generate a second demodulated signal responsive to the second isolated output signal; and
an output decision circuit coupled to the first and second receivers to receive the first and second data output signals, the output decision circuit operable to generate a data output signal responsive to the first and second demodulated signals.
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Accused Products
Abstract
A data coupler includes first and second acoustic isolation transformers that develop first and second isolated output signals in response to first and second modulated input signals. A first and a second transmitter is coupled to the first and second acoustic isolation transformers to receive a first and a second data input signal and generate the first and second modulated input signal in response to the first and second data input signals. A first and a second receiver is coupled to the first and second acoustic isolation transformers to receive the first and a second isolated output signals and generate first and second demodulated signals responsive to the first and second isolated output signals. An output decision circuit is coupled to the first and second receivers to receive the first and second data output signals and generates a data output signal responsive to the first and second demodulated signals.
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Citations
25 Claims
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1. A data coupler, comprising:
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a first acoustic isolation transformer operable to develop a first isolated output signal in response to a first modulated input signal;
a second acoustic isolation transformer operable to develop a second isolated output signal in response to a second modulated input signal;
a first transmitter coupled to the first acoustic isolation transformer and adapted to receive a first data input signal, the first transmitter operable to generate the first modulated input signal in response to the first data input signal;
a second transmitter coupled to the second acoustic isolation transformer and adapted to receive a second data input signal that is the complement of the first data input signal, the second transmitter operable to generate the second modulated input signal in response to the second data input signal;
a first receiver coupled to the first acoustic isolation transformer to receive the first isolated output signal and operable to generate a first demodulated signal responsive to the first isolated output signal; and
a second receiver coupled to the second acoustic isolation transformer to receive the second isolated output signal and operable to generate a second demodulated signal responsive to the second isolated output signal; and
an output decision circuit coupled to the first and second receivers to receive the first and second data output signals, the output decision circuit operable to generate a data output signal responsive to the first and second demodulated signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An electronic system, comprising:
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a first electronic subsystem;
a second electronic subsystem;
a substrate containing at least one data coupling device, each data coupling device being coupled to the first and second electronic subsystems and each data coupling device including, a first acoustic isolation transformer operable to develop a first isolated output signal in response to a first modulated input signal;
a second acoustic isolation transformer operable to develop a second isolated output signal in response to a second modulated input signal;
a first transmitter coupled to the first acoustic isolation transformer and adapted to receive a first data input signal, the first transmitter operable to generate the first modulated input signal in response to the first data input signal;
a second transmitter coupled to the second acoustic isolation transformer and adapted to receive a second data input signal that is the complement of the first data input signal, the second transmitter operable to generate the second modulated input signal in response to the second data input signal;
a first receiver coupled to the first acoustic isolation transformer to receive the first isolated output signal and operable to generate a first demodulated signal responsive to the first isolated output signal; and
a second receiver coupled to the second acoustic isolation transformer to receive the second isolated output signal and operable to generate a second demodulated signal responsive to the second isolated output signal; and
an output decision circuit coupled to the first and second receivers to receive the first and second data output signals, the output decision circuit operable to generate a data output signal responsive to the first and second demodulated signals. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. A method of generating a data output signal in response to a data input signal, the output signal being electrically isolated from the input signal and the method comprising:
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generating first and second control input signals responsive to the data input signal;
generating a first acoustic signal responsive to the first control input signal;
generating a second acoustic signal responsive to the second control input signal;
generating a first isolated output signal in response to the first acoustic signal;
generating a second isolated output signal in response to the second acoustic signal;
generating the data output signal in response to the first and second isolated output signals. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification