Digital security system
First Claim
Patent Images
1. A system, comprising:
- a signal processor comprising;
an input to receive a digital audio signal, the digital audio signal having a first fidelity characteristic; and
a first output to provide a first digital output signal having a second fidelity characteristic, wherein the second fidelity characteristic is determined in response to security information extracted from the digital audio signal;
wherein the security information extracted from the digital audio signal is compared to a security profile to determine a level of security associated with the digital audio signal; and
wherein the first digital output signal is provided to a digital to analog converter.
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Abstract
A system and method for processing a digital audio signal is disclosed. The system includes an input to receive a digital audio signal and a first output to provide a first digital output signal. The digital audio signal has a first fidelity characteristic and the first digital output signal has a second fidelity characteristic. The second fidelity characteristic is determined in response to security information extracted from the digital audio signal. The first digital output signal is provided to a digital to analog converter.
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Citations
26 Claims
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1. A system, comprising:
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a signal processor comprising; an input to receive a digital audio signal, the digital audio signal having a first fidelity characteristic; and a first output to provide a first digital output signal having a second fidelity characteristic, wherein the second fidelity characteristic is determined in response to security information extracted from the digital audio signal; wherein the security information extracted from the digital audio signal is compared to a security profile to determine a level of security associated with the digital audio signal; and wherein the first digital output signal is provided to a digital to analog converter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system comprising:
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a digital to analog converter to receive a first digital signal, wherein a fidelity characteristic of the first digital signal is based on security information associated with a digital audio source of the first digital signal; and a comparator to compare the security information to a security profile to determine a level of security associated with the first digital signal; wherein the digital to analog converter converts the first digital signal to an analog output. - View Dependent Claims (13, 14)
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15. A method, comprising:
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receiving a digital audio input signal at a digital signal processor; extracting, at the digital signal processor, first security information at a first time from the digital audio input signal; comparing the extracted first security information to a security profile to determine a level of security associated with the digital audio input signal; setting a fidelity characteristic of a digital output signal to a first level based on the level of security associated with the digital audio input signal; and providing the digital output signal to a digital to analog converter. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A method, comprising:
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receiving, at a digital signal processor, a digital audio signal, wherein a fidelity characteristic of the digital audio signal is modified based on security information extracted from the digital audio signal; comparing the security information extracted from the digital audio signal to a security profile to determine a level of security associated with the digital audio signal; and converting the digital audio signal to an analog output signal. - View Dependent Claims (22, 23, 24)
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25. A non-transitory computer readable storage medium having a computer program embedded within the non-transitory computer readable medium storage, the computer program comprising:
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instructions to extract first security information at a first time from a digital audio input signal; instructions to compare the extracted first security information to a security profile to determine a level of security associated with the digital audio input signal; instructions to set a fidelity characteristic of a digital output signal to a first level based on the level of security associated with the digital audio input signal; and instructions to provide the digital output signal at an output. - View Dependent Claims (26)
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Specification