Claims for Patent: 9,268,909

Summary for Patent: 9,268,909

Title:	Apparatus, system, and method to adaptively optimize power dissipation and broadcast power in a power source for a communication device
Abstract:	Provided is an apparatus, system, and method for stabilizing battery voltage of a battery device while optimizing power delivered to a receiver during communication of a broadcast packet. A logic circuit is configured to receive a broadcast packet having a predetermined number of bits for communication by a controller to a receiver located remotely from the controller, determine a number of cycles in which a sampled battery voltage is either greater than or less than or equal to a nominal battery voltage over a first subset of the predetermined number of bits of the broadcast packet and performs either a tune-up or a tune-down procedure based on the number of cycles counted in which the sampled battery voltage is not equal to the nominal battery voltage for more than one half of a total number of cycles counted.
Inventor(s):	Jani; Nilay (San Jose, CA), Webb; Douglas (Los Altos, CA), Withrington; Jonathan (San Francisco, CA), Berkman; Jeffrey (Saratoga, CA), Li; Haifeng (Sunnyvale, CA)
Assignee:	Proteus Digital Health, Inc. (Redwood City, CA)
Application Number:	14/435,240
Patent Claims:	1. A method of stabilizing battery voltage of a battery device while optimizing power delivered to a receiver during communication of a broadcast packet, the method comprising: receiving, by a logic circuit, a broadcast packet having a predetermined number of bits for communication by a controller to a receiver located remotely from the controller; determining, by the logic circuit, a number of cycles in which a sampled battery voltage is either greater than or less than or equal to a nominal battery voltage over a first subset of the predetermined number of bits of the broadcast packet; and performing a either a tune-up or tune-down procedure based on the number of cycles counted in which the sampled battery voltage is not equal to the nominal battery voltage for more than one half of a total number of cycles counted. 2. The method of claim 1, comprising: performing a tune-up procedure when the sampled battery voltage is greater than the nominal battery voltage for more than one half of a total number of cycles counted; and performing a tune-down procedure when the sampled battery voltage is not greater than the nominal battery voltage for more than one half of a total number of cycles counted. 3. The method of claim 1, comprising determining, by the logic circuit, an operating mode, wherein the operating mode is either an X-bit multiple cycle operating mode or a Y-bit single cycle operating mode when the number of cycles in which the sampled battery voltage is not less than the nominal battery voltage for more than one half of a total number of cycles counted. 4. The method of claim 3, comprising determining, by the logic circuit, the number of cycles over a second subset of the predetermined number of bits of the broadcast packet in which the sampled battery voltage is greater than the nominal battery voltage. 5. The method of claim 4, comprising determining, by the logic circuit, whether the sampled battery voltage is greater than the nominal battery voltage for more than one half of the cycles over the second subset of the predetermined number of bits of the broadcast packet. 6. The method of claim 5, comprising: waiting, by the logic circuit, for a subsequent broadcast packet when the sampled battery voltage is not greater than the nominal battery voltage for more than one half of the cycles over the second subset of the predetermined number of bits of the broadcast packet; and performing the tune-up procedure when the number of cycles in which the sampled battery voltage is greater than the nominal battery voltage for more than one half of the cycles over the second subset of the predetermined number of bits of the broadcast packet. 7. The method of claim 3, comprising determining, by the logic circuit, the number of cycles over a third subset of the predetermined number of bits of the broadcast packet in which the sampled battery voltage is greater than the nominal battery voltage. 8. The method of claim 7, comprising determining, by the logic circuit, whether the sampled battery voltage is greater than the nominal battery voltage for more than one half of the cycles over the third subset of the predetermined number of bits of the broadcast packet. 9. The method of claim 8, comprising: waiting, by the logic circuit, for a subsequent broadcast packet when the sampled battery voltage is not greater than the nominal battery voltage for more than one half of the cycles over the third subset of the predetermined number of bits of the broadcast packet; and performing the tune-up procedure when the number of cycles in which the sampled battery voltage is greater than the nominal battery voltage for more than one half of the cycles over the third subset of the predetermined number of bits of the broadcast packet. 10. The method of claim 1, wherein the tune-up procedure, comprises: determining, by a logic circuit, whether a battery current as defined by a predetermined programmable value is at a maximum current limit; determining, by the logic circuit, whether the battery current is at a minimum current limit when the battery current is less than the maximum current limit; determining, by the logic circuit, whether a bit of the broadcast packet has a default pulse width when the battery current is at the minimum current limit; and increasing the pulse width when the pulse width is not at the default pulse width; and increasing the current limit when the pulse width is at the default pulse width. 11. The method of claim 10, comprising setting, by the logic circuit, the pulse width to the default pulse width when the battery current is not at the minimum current limit. 12. The method of claim 10, comprising: determining, by the logic circuit, whether the pulse width is at a maximum pulse width when the battery current is at the maximum current limit; and increasing, by the logic circuit, the pulse width when the pulse width is not at a maximum pulse width. 13. The method of claim 1, wherein the tune-down procedure, comprises: determining, by a logic circuit, whether a battery current is at a minimum current limit; determining, by the logic circuit, whether the battery current is at a maximum current limit when the battery current is less than the minimum current limit; determining, by the logic circuit, whether a bit of the broadcast packet has a default pulse width when the battery current is at the maximum current limit; and decreasing the pulse width when the pulse width is not at the default pulse width; and decreasing the current limit when the pulse width is at the default pulse width. 14. The method of claim 13, comprising setting, by the logic circuit, the pulse width to the default pulse width when the battery current is not at the maximum current limit. 15. The method of claim 13, comprising: determining, by the logic circuit, whether the pulse width is at a minimum pulse width when the battery current is at the minimum current limit; and reducing, by the logic circuit, the pulse width when the pulse width is not at a minimum pulse width. 16. A logic circuit configured to stabilize battery voltage of a battery device while optimizing power delivered to a receiver during communication of a broadcast packet, the logic circuit comprising: a processor configured to receive a broadcast packet having a predetermined number of bits for communication by a controller to a receiver located remotely from the controller; determine a number of cycles in which a sampled battery voltage is either greater than or less than or equal to a nominal battery voltage over a first subset of the predetermined number of bits of the broadcast packet; and perform a either a tune-up or tune-down procedure based on the number of cycles counted in which the sampled battery voltage is not equal to the nominal battery voltage for more than one half of a total number of cycles counted. 17. The logic circuit of claim 16, comprising: a sample-and-hold circuit; and an analog-to-digital converter, each coupled to the processor and the battery; wherein the analog-to-digital converter samples the battery voltage to determine the sampled battery voltage. 18. The logic circuit of claim 17, comprising a battery coupled to the processor. 19. A communication system, comprising: a processor configured to stabilize a voltage potential generated by an event indicator while optimizing power delivered to a receiver during communication of a broadcast packet by the event indicator to the receiver, the broadcast packet having a predetermined number of bits; and an event indicator system with dissimilar metals positioned on opposite ends, wherein the event indicator is configured to generate a voltage potential when the dissimilar metals positioned on opposite ends dissolve in a conducting fluid; wherein the processor is further configured to: determine a number of cycles in which a sampled voltage potential is either greater than or less than or equal to a nominal voltage potential over a first subset of the predetermined number of bits of the broadcast packet; perform a either a tune-up or tune-down procedure based on the number of cycles counted in which the sampled battery voltage is not equal to the nominal battery voltage for more than one half of a total number of cycles counted. 20. The communication system of claim 19, comprising: a sample-and-hold circuit; and an analog-to-digital converter, each coupled to the processor and the event indicator; wherein the analog-to-digital converter is to sample the voltage potential to determine the sampled battery potential.