EMITTER DRIVER FOR NONINVASIVE PATIENT MONITOR
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Accused Products
Abstract
Embodiments of the present disclosure include an emitter driver configured to be capable of addressing substantially 2N nodes with N cable conductors configured to carry activation instructions from a processor. In an embodiment, an address controller outputs an activation instruction to a latch decoder configured to supply switch controls to activate particular LEDs of a light source.
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Citations
35 Claims
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1-15. -15. (canceled)
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16. A patient monitor configured to communicate with an optical sensor, the patient monitor comprising:
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means for supplying a current to one or more optical radiation sources of an optical sensor; means for determining an address of 2N addresses to set a wavelength of optical radiation emitted by the one or more optical radiation sources to a desired wavelength, each of at least some of the 2N addresses uniquely corresponding to a different wavelength of the optical radiation emitted by the one or more optical radiation sources, N being a number greater than 2; and means for outputting the address as a set of N bits transmitted separately via N terminals. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A patient monitor configured to communicate with an optical sensor, the patient monitor comprising:
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a processor configured to select a desired wavelength of optical radiation emitted by one or more optical radiation sources of an optical sensor; a current control circuit configured to supply a current to the one or more optical radiation sources; and an address control circuit configured to set a wavelength of the optical radiation emitted by the one or more optical radiation sources to the desired wavelength by outputting an address as a set of N bits transmitted in parallel via N terminals, the address being selected from an address space comprising a plurality of addresses in which at least some of each of the plurality of addresses uniquely correspond to a different wavelength of the optical radiation emitted by the one or more optical radiation sources, N being a number greater than 2, wherein a total number of addresses in the plurality of addresses is greater than 2N and less than or equal to 2N. - View Dependent Claims (31, 32, 33, 34, 35)
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Specification