发明名称 |
Method for sourcing current using an audio jack |
摘要 |
A peripheral device configured to be plugged into an audio jack of an electronic device includes an audio plug having an input terminal; a load electrically connected to the input terminal of the audio plug and configured to draw a first amount of current; a variable resistor electrically connected to the input terminal; a sensor configured to measure a voltage at the input terminal or an amount of current flowing into the load; and a controller that receives a signal from the sensor and is configured to control a resistance of the variable resistor such that a sum of the first amount of current and a second amount of current flowing through the variable resistor is substantially equal to a predetermined current value. |
申请公布号 |
US9164561(B2) |
申请公布日期 |
2015.10.20 |
申请号 |
US201213584710 |
申请日期 |
2012.08.13 |
申请人 |
SQUARE, INC. |
发明人 |
Lamba Kartik |
分类号 |
H04R1/10;G06F1/26;H04R5/04 |
主分类号 |
H04R1/10 |
代理机构 |
Novak Druce Connolly Bove + Quigg LLP |
代理人 |
Novak Druce Connolly Bove + Quigg LLP |
主权项 |
1. A peripheral device configured to be plugged into an audio jack of an electronic device, comprising:
an audio plug having an input terminal; a load electrically connected to the input terminal of the audio plug and configured to draw a first amount of current; a variable resistor electrically connected to the input terminal; a sensor configured to measure a voltage at the input terminal or an amount of current flowing into the load; and a controller that receives a signal from the sensor and is configured to control a resistance of the variable resistor such that a sum of the first amount of current and a second amount of current flowing through the variable resistor is substantially equal to a predetermined current value. |
地址 |
San Francisco CA US |