Audio system for vehicle with battery-backed storage
First Claim
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1. An audio system for use in a vehicle for the playback of audio data by a sound amplification system of the vehicle, the audio system comprising:
- (a) a dynamic random access memory (DRAM) that stores the audio data for playback;
(b) an audio playback device that reads the audio data from the DRAM and converts it to a form which can be output to the vehicle'"'"'s sound amplification system;
(c) an audio acquisition device that receives the audio data to be stored in the DRAM; and
(d) a power supply system between the vehicle'"'"'s electrical system and the audio system, the power supply system supplying power to the audio system consistently including when the vehicle is not in use.
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Abstract
An audio system is mounted in a vehicle and provides playback of digital audio content stored in semiconductor DRAM. Power from the vehicle'"'"'s battery is constantly applied to the DRAM to retain information even when the vehicle is not operating. The audio content may be acquired by the recording of broadcast radio programs, by streaming content from a wireless Internet connection, from a CD, and/or from a wireless link to a computer. An updated playlist may be provided to the DRAM on a periodic basis or manually under user control.
104 Citations
28 Claims
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1. An audio system for use in a vehicle for the playback of audio data by a sound amplification system of the vehicle, the audio system comprising:
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(a) a dynamic random access memory (DRAM) that stores the audio data for playback;
(b) an audio playback device that reads the audio data from the DRAM and converts it to a form which can be output to the vehicle'"'"'s sound amplification system;
(c) an audio acquisition device that receives the audio data to be stored in the DRAM; and
(d) a power supply system between the vehicle'"'"'s electrical system and the audio system, the power supply system supplying power to the audio system consistently including when the vehicle is not in use. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An audio system for use in a vehicle for the playback of audio data by a sound amplification system of the vehicle, the audio system comprising:
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(a) a nonvolatile digital storage device that stores the audio data for playback;
(b) an audio playback device that reads the audio data from the digital storage device and converts it to a form which can be output to the vehicle'"'"'s sound amplification system;
(c) a first audio acquisition device that receives the audio data to be stored in the digital storage device, said first audio acquisition device including a radio receiver/demodulator that receives broadcast audio signals and stores the received audio signals in said digital storage device; and
(d) a second audio acquisition device comprises a radio receiver that receives audio data transmitted wirelessly to said audio system from a nearby computer or media server and stores the received audio data in the digital storage device. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for providing audio playback of pre-recorded audio content in a vehicle over the vehicle'"'"'s sound amplification system, comprising:
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(a) a user selecting specific audio content that the user wants to listen to in the vehicle;
(b) establishing a wireless networking connection between an audio device that is mounted in the vehicle and a remote source of the specific audio content;
(c) transferring a copy of the specific audio content over the wireless connection from the remote source to the audio device;
(d) the audio device receiving the specific audio content and storing it in non-volatile memory; and
.(e) the user interacting with the audio device to cause it to play back said specific audio content. - View Dependent Claims (22, 23)
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24. An audio system for use in a vehicle for the playback of audio data by a sound amplification system of the vehicle, the audio system comprising:
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a non-volatile digital storage device that stores the audio data for playback;
an audio playback device that reads the audio data from the digital storage device and converts it to a form which can be output to the vehicle'"'"'s sound amplification system;
a first audio acquisition device that receives the audio data to be stored in the digital storage device, said first audio acquisition device including a radio receiver/demodulator that receives broadcast audio signals and stores the received audio signals in said digital storage device; and
a second audio acquisition device comprising a Compact Disc (CD) reader.
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25. An audio system for use in a vehicle for the playback of audio data by a sound amplification system of the vehicle, the audio system comprising:
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a non-volatile digital storage device that stores the audio data for playback;
an audio playback device that reads the audio data from the digital storage device and converts it to a form which can be output to the vehicle'"'"'s sound amplification system;
a first audio acquisition device comprising a Compact Disc (CD) reader; and
a second audio acquisition device comprising a radio receiver that receives audio data transmitted wirelessly to said audio system from a nearby computer or media server and stores the received audio data in the digital storage device.
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26. An audio system for the playback of audio data by a sound amplification system, comprising:
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(a) a dynamic random access memory (DRAM) that stores the audio data for playback;
(b) an audio playback device that reads the audio data from the DRAM and converts it to a form which can be output to the sound amplification system;
(c) an audio acquisition device that receives the audio data to be stored in the DRAM; and
(d) a power supply system supplying power to the DRAM consistently including when power is removed from the rest of the audio system. - View Dependent Claims (27, 28)
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Specification