Battery charger for cellular phone, having speaker
First Claim
1. A charger for a cellular phone, comprising:
- a digital-to-analog converter configured to receive an audio signal in digital format from the cellular phone and output an analog audio signal, wherein the digital format comprises MP3 encoding;
an amplifier configured to receive the analog audio signal from the digital-to-analog converter and amplify the analog audio signal received from a cellular phone; and
a speaker configured to receive the analog audio signal from the amplifier.
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Accused Products
Abstract
A battery charger for a cellular phone, having a speaker includes an ear jack connected to an ear jack of the cellular phone, for transmitting a voice signal of the cellular phone to the battery charger, a voice amplifier for amplifying the voice signal from the ear jack, and a speaker for converting the voice signal output from the voice amplifier into voice. The battery charger for a cellular phone, having a speaker further includes a communication port connected to a communication port of the cellular phone when the cellular phone is inserted(connected) to the battery charger, for mutually transmitting the voice signal, and a selector for connecting either the communication port or the ear jack with the voice amplifier.
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Citations
26 Claims
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1. A charger for a cellular phone, comprising:
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a digital-to-analog converter configured to receive an audio signal in digital format from the cellular phone and output an analog audio signal, wherein the digital format comprises MP3 encoding;
an amplifier configured to receive the analog audio signal from the digital-to-analog converter and amplify the analog audio signal received from a cellular phone; and
a speaker configured to receive the analog audio signal from the amplifier. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A cellular phone system for a communications network, comprising:
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a cellular phone;
a charger configured to receive and charge the cellular phone, wherein the charger comprises;
a digital-to-analog converter configured to receive a digital audio signal from the cellular phone and output an analog audio signal, wherein the digital audio signal is in a MP3 format;
an amplifier configured to receive and amplify the analog audio signal from the cellular phone system digital-to-analog converter; and
a speaker configured to convert the analog audio signal into audible sound. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A mobile phone battery charger, comprising:
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a charger ear jack configured to be connected to a mobile phone ear jack;
a charger communication port configured to be connected to a mobile phone communication port;
an audio signal amplifier configured to receive an audio signal from said charger ear jack and said charger communication port; and
a speaker configured to be driven by an audio signal from said audio signal amplifier. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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23. A mobile phone battery charger, comprising:
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a charger communication port configured to be connected to a mobile phone communication port, and further configured to convey an audio signal to or from the mobile phone communication port;
a memory coupled to the charger communication port configured to store an audio signal;
an audio amplifier configured to receive and amplify an audio signal from the mobile phone communication port or from the memory; and
a speaker configured to be driven by an audio signal from said audio signal amplifier. - View Dependent Claims (24, 25, 26)
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Specification