Intelligent adapter
First Claim
1. An AC/DC or DC/DC adapter for providing DC power via at least one power line to a portable electronic device, said adapter comprising circuitry capable of generating an identification signal proportional to a maximum adapter current available from said adapter, said circuitry is further capable of changing said identification signal in response to changes in available adapter current.
1 Assignment
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Accused Products
Abstract
In one aspect the present invention provides an AC/DC or DC/DC adapter, comprising circuitry to generate a signal proportional to the maximum adapter current. In another aspect, the present invention provides a portable electronic device, comprising circuitry to receive a signal proportional to the maximum current supplied to the portable electronic device and a charger controller. Still another aspect of the present invention provides an adapter topology system, comprising an AC/DC or DC/DC adapter comprising circuitry to generate a signal proportional to the maximum adapter current; and a portable electronic device adapted to receive power from said adapter and to receive said signal proportional to the maximum adapter current.
26 Citations
19 Claims
- 1. An AC/DC or DC/DC adapter for providing DC power via at least one power line to a portable electronic device, said adapter comprising circuitry capable of generating an identification signal proportional to a maximum adapter current available from said adapter, said circuitry is further capable of changing said identification signal in response to changes in available adapter current.
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6. A system, oomprising;
- an AC/DC or DC/DC adapter comprising circuitry capable of generating an identification signal proportional to a maximum adapter current available from said adapter, said circuitry is further capable of changing said identification signal in response to changes in available adapter current; and
a portable electronic device adapted to receive power from said adapter via at least one power line and to receive said identification signal from said adapter. - View Dependent Claims (7, 8, 9, 10, 11, 12)
- an AC/DC or DC/DC adapter comprising circuitry capable of generating an identification signal proportional to a maximum adapter current available from said adapter, said circuitry is further capable of changing said identification signal in response to changes in available adapter current; and
- 13. A portable electronic device, comprising circuitry coupled to an AC/DC or DC/DC adapter, said circuitry is configured to receive an identification signal proportional to a maximum adapter current supplied to said portable electronic device a said circuitry is further configured to generate a voltage signal proportional to said identification signal, said circuitry is further configured to change said voltage signal in response to changes in available current provided by said AC/DC or DC/DC adapter.
Specification