Power adapter having a speaker for an electronic device
First Claim
1. A power adapter, comprising:
- a first speaker coupled to an audio inlet; and
means for converting energy from a mains receptacle to a power outlet.
0 Assignments
0 Petitions
Accused Products
Abstract
A power adapter for an electronic device, such as a notebook computer, includes a speaker to generate low audio frequencies, such as below 150 Hz. The speaker can be mounted in a variety of arrangements, i.e. closed-box, bass-reflex, or a more intricate shape which adds resonance (poles and zeros) to the acoustic filtering properties of the enclosure. An exemplary bass-reflex mounting includes a driver with resonance at 140 Hz, a chamber size of 7.74 in3 and a port determined by Thiele-Small equations. This gives a low frequency response beginning at 70 Hz. This low frequency component is combined in free space with the higher frequency components emanating from the portable electronic device'"'"'s internal speaker(s). The audio signal connection can be made when the AC adapter is connected to the notebook computer by using two additional wires in the power cord. Since users generally carry their AC adapters with them, they can enjoy full harmonic sound without taking anything extra along. Alternatively, the AC adapter and electronic device can contain additional circuitry to provide wireless paths for either the power distribution path or audio interface or both.
60 Citations
22 Claims
-
1. A power adapter, comprising:
-
a first speaker coupled to an audio inlet; and
means for converting energy from a mains receptacle to a power outlet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. An electronic system with enhanced audio, comprising:
-
an electronic device, comprising;
an audio outlet;
a power inlet;
a power adapter external to said electronic device, comprising;
a mains receptacle;
a power outlet;
an audio inlet;
a speaker connected to said audio inlet;
means for converting energy from said mains receptacle to said power outlet;
means for coupling said power outlet to said power inlet; and
means for interfacing said audio outlet to said audio inlet. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. An electronic system with enhanced audio, comprising:
-
an electronic device, comprising;
a power inlet;
a power signal coupled with said power inlet;
an audio signal;
a delta-sigma modulator having said audio signal as an input and a modulated signal as an output;
means for superimposing said modulated signal onto said power signal;
a power adapter external to said electronic device, comprising;
a mains receptacle;
a power outlet;
means for converting energy from said mains receptacle to said power outlet;
a superimposed signal received from said power outlet;
a high pass filter having said superimposed signal as an input and a filtered digital signal as an output;
a discriminator having said filtered digital signal as an input and a recovered modulated signal as an output;
a low pass filter having said recovered modulated signal as an input and a recovered audio signal as an output;
a speaker driven by said recovered audio signal; and
means for coupling said power outlet to said power inlet. - View Dependent Claims (19, 20, 21, 22)
-
Specification