PORTABLE SPEAKER OF PORTABLE MULTIMEDIA DEVICE
First Claim
Patent Images
1. A portable speaker of a portable multimedia device, comprising:
- a digital amplifier to receive a digital audio signal from the portable multimedia device and to digitally process and output the received digital audio signal to a speaker unit; and
a battery to supply electric power to at least one of the digital amplifier and the portable multimedia device.
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Abstract
A portable speaker of a portable multimedia device includes a digital amplifier to receive a digital audio signal from the portable multimedia device and to digitally process and output the received digital audio signal to a speaker unit, and a battery to supply electric power to at least one of the digital amplifier and the portable multimedia device.
64 Citations
27 Claims
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1. A portable speaker of a portable multimedia device, comprising:
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a digital amplifier to receive a digital audio signal from the portable multimedia device and to digitally process and output the received digital audio signal to a speaker unit; and
a battery to supply electric power to at least one of the digital amplifier and the portable multimedia device. - View Dependent Claims (2, 3, 4)
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5. A portable speaker unit useable with a multimedia device, comprising:
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a processing unit to process a digital audio signal received from the multimedia device and to output an audio analog signal corresponding to the received digital audio signal;
at least one speaker to receive the audio analog signal from the processing unit and to output sound corresponding to the audio analog signal; and
a battery unit to supply electric power to at least one of the processing unit and the multimedia device. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A portable multimedia apparatus, comprising:
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a multimedia unit, comprising;
a signal generating unit to decode audio data and to output a digital audio signal corresponding to the decoded audio data, and an internal battery to provide electric power to the signal generating unit; and
a removable portable speaker unit, comprising;
a processing unit to process the digital audio signal output from the signal generating unit and to output an audio analog signal corresponding to the digital audio signal, at least one speaker to receive the audio analog signal output from the processing unit and to output sound corresponding to the audio analog signal, and a battery unit to supply electric power to at least one of the processing unit and the signal generating unit. - View Dependent Claims (20)
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21. A portable multimedia apparatus, comprising:
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a multimedia device, comprising;
a signal generating unit to decode audio data and to output a digital audio signal corresponding to the decoded audio data, and an internal battery to supply electric power to the signal generating unit; and
an external battery pack to supply electric power to the portable multimedia device, comprising;
at least one speaker to output sound corresponding to the digital audio signal output from the signal generating unit, and a battery unit to supply electric power to the signal generating unit of the portable multimedia device. - View Dependent Claims (22, 23, 24)
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25. A method of providing electric power to a portable multimedia device, comprising:
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supplying the electric power to the portable multimedia device from an internal battery thereof while the internal battery contains a charge; and
supplying the electric power to the portable multimedia device from a portable external speaker based on the charge remaining in the internal battery. - View Dependent Claims (26, 27)
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Specification