Headset power supply and input voltage recognition

Patent metadata

Field	Value
Publication number	US-2016100248-A1
Application number	US-201414506537-A
Country	US
Kind code	A1
Filing date	Oct 3, 2014
Priority date	Oct 3, 2014
Publication date	Apr 7, 2016
Grant date	—

Abstract

A method and an apparatus for operating an electronic sensor and an electronic user input are provided. In one configuration, the apparatus includes a detection circuit configured to recognize a user input voltage generated by an electronic user input and a power supply configured to supply power to a detection circuit continuous without polling. In another configuration, the apparatus includes a port, a first power supply, a second power supply, and a control circuit configured to selectively couple the first power supply or the second power supply to the port based on a state of operation of an electronic sensor coupled to the port.

First claim

What is claimed is:

1 . An electronic apparatus, comprising:
a detection circuit configured to recognize a user input voltage generated by an electronic user input; and a power supply configured to supply power to the detection circuit.

2 . The electronic apparatus of claim 1 , wherein the power supply is configured to supply power to the detection circuit continuously without polling.

3 . The electronic apparatus of claim 1 , wherein the power supply is further configured to supply power to bias an electronic sensor.

4 . The electronic apparatus of claim 1 , wherein the detection circuit comprises a reference voltage generator configured to generate at least one reference voltage for comparing with the user input voltage generated by the electronic user input.

5 . The electronic apparatus of claim 4 , wherein the reference voltage generator is configured to generate a set of reference voltages in a sequence, including the at least one reference voltage, for comparing with the user input voltage generated by the electronic user input.

6 . The electronic apparatus of claim 5 , wherein the detection circuit further comprises a memory for storing results of the set of reference voltages being compared with the user input voltage generated by the electronic user input in the sequence the set of reference voltages is generated.

7 . The electronic apparatus of claim 6 , wherein the detection circuit is further configured to recognize the user input voltage based on the stored results and a predetermined period of time or cycles.

8 . The electronic apparatus of claim 4 , further comprising a plurality of reference voltage generators, including the reference voltage generator, configured to generate a plurality of reference voltages, including the at least one reference voltage, wherein the detection circuit is configured to compare the user input voltage generated by the electronic user input with the plurality of reference voltages in parallel.

9 . The electronic apparatus of claim 1 , further comprises the electronic user input, wherein the electronic user input comprises a set of buttons, and is configured to generate the user input voltage in response to a button of the set of buttons being pressed.

10 . The electronic apparatus of claim 1 , further comprises an electronic sensor, wherein the electronic sensor comprises a microphone.

11 . An electronic apparatus, comprising:
a first power supply; a second power supply; and a control circuit configured to selectively couple the first power supply or the second power supply to a detection circuit configured to recognize a user input voltage generated by an electronic user input, wherein the first power supply is configured to bias an electronic sensor for operation, and the second power supply is configured to supply a power lower than the bias for the electronic sensor for operation.

12 . The electronic apparatus of claim 11 , wherein the control circuit is configured to couple the first power supply to the electronic sensor and the electronic user input in response to the electronic sensor being in operation, and to couple the second power supply to the electronic user input in response to the electronic sensor being not in operation.

13 . The electronic apparatus of claim 12 , wherein the detection circuit comprises a reference voltage generator configured to generate at least one reference voltage for comparing with the user input voltage generated by the electronic user input, wherein the control circuit is configured to selectively couple the first power supply or the second power supply to the reference voltage generator.

14 . The electronic apparatus of claim 13 , wherein the reference voltage generator is configured to generate a set of reference voltages in a sequence, including the at least one reference voltage, for comparing with the user input voltage generated by the electronic user input.

15 . The electronic apparatus of claim 14 , wherein the set of reference voltages is programmable.

16 . The electronic apparatus of claim 14 , wherein the detection circuit further comprises a memory for storing results of the set of reference voltages being compared with the user input voltage generated by the electronic user input in the sequence the set of reference voltages is generated.

17 . The electronic apparatus of claim 16 , wherein the detection circuit is further configured to recognize the user input voltage based on the stored results and a predetermined period of time or cycles.

18 . The electronic apparatus of claim 11 , further comprising the electronic user input, wherein the electronic user input comprises a set of buttons, and is configured to generate the user input voltage in response to a button of the set of buttons being pressed.

19 . The electronic apparatus of claim 11 , further comprising the electronic sensor, wherein the electronic sensor comprises a microphone.

20 . A method for operating an electronic apparatus, comprising:
determining a state of operation of an electronic sensor coupled to a port; and coupling selectively a first power supply or a second power supply to the port based on the state of operation of the electronic sensor coupled to the port.

21 . The method of claim 20 , further comprising recognizing a user input voltage generated by an electronic user input coupled to the port.

22 . The method of claim 21 , further comprising selecting the first power supply or the second power supply for the recognizing the user input voltage.

23 . The method of claim 22 , wherein the recognizing the user input voltage further comprises:
generating a set of reference voltages in a sequence; comparing the set of reference voltages with the user input voltage in the sequence the set of reference voltages is generated.

24 . The method of claim 23 , wherein the recognizing the user input voltage further comprises storing results of the comparing the set of reference voltages with the user input voltage in the sequence the set of reference voltages is generated.

25 . The method of claim 24 , wherein the recognizing the user input voltage is further based on a predetermined period of time or cycles.

Assignees

• Qualcomm Inc

Inventors

• Mehrabi Arash
• Silva Pradeep Charles
• Hugunin Derick

Classifications

• G06F1/263 Primary

  Arrangements for using multiple switchable power supplies, e.g. battery and AC (G06F1/30 takes precedence) · CPC title

• H04R1/1025

  Accumulators specially adapted for earpieces; Arrangements specially adapted for charging thereof · CPC title

• H04M1/6058

  involving the use of a headset accessory device connected to the portable telephone · CPC title

• H04M1/0274

  for an electrical connector module · CPC title

• H04R2420/05

  Detection of connection of loudspeakers or headphones to amplifiers · CPC title